/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 16:00:19,960 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 16:00:19,964 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 16:00:20,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-08 16:00:20,019 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-08 16:00:20,021 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-08 16:00:20,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-08 16:00:20,025 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-08 16:00:20,027 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-08 16:00:20,029 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-08 16:00:20,031 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-08 16:00:20,033 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-08 16:00:20,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-08 16:00:20,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-08 16:00:20,047 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-08 16:00:20,050 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-08 16:00:20,051 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-08 16:00:20,053 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-08 16:00:20,055 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-08 16:00:20,058 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-08 16:00:20,060 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-08 16:00:20,062 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-08 16:00:20,064 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-08 16:00:20,065 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-08 16:00:20,069 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-08 16:00:20,074 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-08 16:00:20,075 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-08 16:00:20,076 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-08 16:00:20,077 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-08 16:00:20,079 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-08 16:00:20,079 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-08 16:00:20,080 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-08 16:00:20,080 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-08 16:00:20,081 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-08 16:00:20,082 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-08 16:00:20,083 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-08 16:00:20,084 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-08 16:00:20,116 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 16:00:20,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 16:00:20,117 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 16:00:20,117 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 16:00:20,119 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 16:00:20,119 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 16:00:20,119 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 16:00:20,119 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 16:00:20,120 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 16:00:20,120 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-08 16:00:20,120 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 16:00:20,120 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 16:00:20,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 16:00:20,121 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-08 16:00:20,121 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 16:00:20,121 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-08 16:00:20,121 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-08 16:00:20,122 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 16:00:20,122 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-08 16:00:20,122 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 16:00:20,122 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-08 16:00:20,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 16:00:20,123 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 16:00:20,123 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 16:00:20,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 16:00:20,124 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 16:00:20,124 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 16:00:20,124 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-08 16:00:20,124 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-08 16:00:20,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-08 16:00:20,125 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-08 16:00:20,125 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 16:00:20,125 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-08 16:00:20,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 16:00:20,598 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 16:00:20,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 16:00:20,603 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 16:00:20,604 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 16:00:20,605 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2021-10-08 16:00:20,687 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2198c5769/b6d8a98513ef42b9af9f39903e2ef99c/FLAG77d860177 [2021-10-08 16:00:21,373 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 16:00:21,374 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2021-10-08 16:00:21,392 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2198c5769/b6d8a98513ef42b9af9f39903e2ef99c/FLAG77d860177 [2021-10-08 16:00:21,722 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2198c5769/b6d8a98513ef42b9af9f39903e2ef99c [2021-10-08 16:00:21,728 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 16:00:21,745 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-08 16:00:21,748 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 16:00:21,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 16:00:21,754 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 16:00:21,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 04:00:21" (1/1) ... [2021-10-08 16:00:21,759 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@774ec125 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:00:21, skipping insertion in model container [2021-10-08 16:00:21,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 04:00:21" (1/1) ... [2021-10-08 16:00:21,769 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 16:00:21,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 16:00:22,021 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c[3991,4004] [2021-10-08 16:00:22,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 16:00:22,044 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 16:00:22,099 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c[3991,4004] [2021-10-08 16:00:22,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 16:00:22,129 INFO L208 MainTranslator]: Completed translation [2021-10-08 16:00:22,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:00:22 WrapperNode [2021-10-08 16:00:22,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 16:00:22,132 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 16:00:22,132 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 16:00:22,132 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 16:00:22,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:00:22" (1/1) ... [2021-10-08 16:00:22,165 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:00:22" (1/1) ... [2021-10-08 16:00:22,218 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 16:00:22,219 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 16:00:22,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 16:00:22,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 16:00:22,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:00:22" (1/1) ... [2021-10-08 16:00:22,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:00:22" (1/1) ... [2021-10-08 16:00:22,257 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:00:22" (1/1) ... [2021-10-08 16:00:22,258 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:00:22" (1/1) ... [2021-10-08 16:00:22,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:00:22" (1/1) ... [2021-10-08 16:00:22,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:00:22" (1/1) ... [2021-10-08 16:00:22,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:00:22" (1/1) ... [2021-10-08 16:00:22,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 16:00:22,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 16:00:22,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 16:00:22,324 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 16:00:22,325 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:00:22" (1/1) ... [2021-10-08 16:00:22,338 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 16:00:22,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:22,377 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-08 16:00:22,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-08 16:00:22,453 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 16:00:22,453 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 16:00:22,453 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 16:00:22,454 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 16:00:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-08 16:00:22,454 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-08 16:00:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-08 16:00:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 16:00:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-08 16:00:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-08 16:00:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-08 16:00:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-08 16:00:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 16:00:22,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 16:00:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-08 16:00:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 16:00:22,458 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-08 16:00:24,043 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 16:00:24,043 INFO L299 CfgBuilder]: Removed 46 assume(true) statements. [2021-10-08 16:00:24,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 04:00:24 BoogieIcfgContainer [2021-10-08 16:00:24,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 16:00:24,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 16:00:24,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 16:00:24,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 16:00:24,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 04:00:21" (1/3) ... [2021-10-08 16:00:24,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a4560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 04:00:24, skipping insertion in model container [2021-10-08 16:00:24,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:00:22" (2/3) ... [2021-10-08 16:00:24,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a4560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 04:00:24, skipping insertion in model container [2021-10-08 16:00:24,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 04:00:24" (3/3) ... [2021-10-08 16:00:24,058 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring-nondet.wvr.c [2021-10-08 16:00:24,066 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-08 16:00:24,066 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 16:00:24,067 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2021-10-08 16:00:24,067 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 16:00:24,119 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,120 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,120 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,120 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,121 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,121 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,121 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,122 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,122 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,122 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,122 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,123 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,123 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,123 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,124 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,124 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,124 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,125 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,125 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,125 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,126 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,126 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,127 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,127 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,127 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,127 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,128 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,128 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,128 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,128 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,129 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,129 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,129 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,130 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,130 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,130 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,131 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,131 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,132 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,132 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,132 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,132 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,133 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,133 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,134 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,134 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,134 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,134 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,135 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,135 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,135 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,135 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,136 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,136 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,136 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,136 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,137 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,137 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,137 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,138 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,138 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,138 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,138 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,139 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,139 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,139 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,139 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,140 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,140 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,140 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,140 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,141 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,141 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,141 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,141 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,142 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,142 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,142 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,142 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,143 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,143 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,143 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,143 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,143 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,144 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,144 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,144 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,144 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,145 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,145 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,145 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,145 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,146 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,146 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,146 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,146 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,147 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,147 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,147 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,148 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,148 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,148 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,148 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,149 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,149 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,149 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,149 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,149 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,150 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,150 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,150 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,150 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,150 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,151 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,151 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,151 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,151 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,151 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,152 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,152 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,152 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,152 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,153 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,153 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,153 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,153 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,154 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,154 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,154 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,154 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,155 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,155 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,155 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,156 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,156 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,156 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,156 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,157 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,157 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,157 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,157 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,157 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,159 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~s~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,159 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~s~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,159 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,159 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,160 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,160 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,160 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,160 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,161 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,161 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,161 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,161 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,161 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,162 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,162 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,162 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,162 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,163 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,163 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,163 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,163 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,164 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,164 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,164 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,164 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,164 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,165 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,165 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,165 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,165 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,166 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,166 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,166 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,166 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,166 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,167 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,167 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,167 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,167 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,168 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,168 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,169 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,169 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,169 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,169 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,170 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,170 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,170 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,170 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,171 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,171 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,171 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,171 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,172 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,172 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,172 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,173 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,173 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,173 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,173 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,173 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,174 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,174 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,174 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,175 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,175 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,175 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,175 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,176 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,176 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,176 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,176 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,176 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,177 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,177 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,177 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,177 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,177 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,178 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,178 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,179 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,179 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,179 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,179 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,180 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,180 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~s~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,180 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,181 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~s~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,181 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,181 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~s~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,181 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,182 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~s~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,182 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,182 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~s~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,182 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,182 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~s~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,183 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,183 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~s~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,183 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,183 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~s~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,184 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,184 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~s~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,184 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~s~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,184 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,184 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~s~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,185 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~s~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,185 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,185 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,185 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,186 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,187 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,187 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,187 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,187 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,188 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,188 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,188 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,188 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,189 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,189 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,189 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,189 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,189 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,190 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,190 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,190 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,190 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,190 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,191 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,191 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,191 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,191 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,191 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,192 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,192 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,192 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,192 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,192 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,192 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,193 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,193 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,193 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,193 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,194 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,194 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,194 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,194 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,194 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,195 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,195 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,195 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~short19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,195 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,196 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,196 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~short19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,196 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,196 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,196 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~short19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,197 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,197 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,197 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~short19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,197 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,198 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,198 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,198 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,198 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,198 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~short19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,199 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,199 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,199 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,199 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,200 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,200 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~short19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,200 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,200 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,201 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~short19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,201 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,201 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,201 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,201 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,201 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~short19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,202 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,202 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,202 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,202 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,202 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,203 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,203 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,203 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~short19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,204 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,204 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,204 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,204 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,204 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,205 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~short19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,205 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,206 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,206 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,206 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,206 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,206 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,207 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,207 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,207 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,207 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,208 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,208 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,208 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,208 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,208 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,209 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,209 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,209 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,209 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,209 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,210 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,210 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,210 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,210 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,210 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,211 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,215 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,215 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,216 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~s~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,216 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,216 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,216 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,216 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,217 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,217 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,217 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,217 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,220 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,220 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,220 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,221 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,221 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,221 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,221 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,221 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,222 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,222 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,222 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~short19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,224 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,224 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,224 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,224 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,225 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,225 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,225 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,225 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,226 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,226 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,226 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,226 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,226 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,227 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:00:24,233 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-08 16:00:24,294 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 16:00:24,305 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-08 16:00:24,306 INFO L340 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2021-10-08 16:00:24,331 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 16:00:24,345 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 276 places, 291 transitions, 606 flow [2021-10-08 16:00:24,349 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 276 places, 291 transitions, 606 flow [2021-10-08 16:00:24,352 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 276 places, 291 transitions, 606 flow [2021-10-08 16:00:24,511 INFO L129 PetriNetUnfolder]: 25/288 cut-off events. [2021-10-08 16:00:24,511 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-08 16:00:24,519 INFO L84 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 288 events. 25/288 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 383 event pairs, 0 based on Foata normal form. 0/231 useless extension candidates. Maximal degree in co-relation 242. Up to 4 conditions per place. [2021-10-08 16:00:24,528 INFO L116 LiptonReduction]: Number of co-enabled transitions 5904 [2021-10-08 16:00:41,505 INFO L131 LiptonReduction]: Checked pairs total: 12018 [2021-10-08 16:00:41,506 INFO L133 LiptonReduction]: Total number of compositions: 335 [2021-10-08 16:00:41,525 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 69 places, 66 transitions, 156 flow [2021-10-08 16:00:41,758 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 4351 states, 3455 states have (on average 4.395658465991317) internal successors, (15187), 4350 states have internal predecessors, (15187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:41,781 INFO L276 IsEmpty]: Start isEmpty. Operand has 4351 states, 3455 states have (on average 4.395658465991317) internal successors, (15187), 4350 states have internal predecessors, (15187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:41,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-08 16:00:41,788 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:41,789 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-08 16:00:41,790 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:00:41,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:41,801 INFO L82 PathProgramCache]: Analyzing trace with hash 45667, now seen corresponding path program 1 times [2021-10-08 16:00:41,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:41,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728261597] [2021-10-08 16:00:41,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:41,828 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:42,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:42,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:42,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:42,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728261597] [2021-10-08 16:00:42,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728261597] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:42,153 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:00:42,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 16:00:42,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851497379] [2021-10-08 16:00:42,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:00:42,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:42,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:00:42,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:00:42,203 INFO L87 Difference]: Start difference. First operand has 4351 states, 3455 states have (on average 4.395658465991317) internal successors, (15187), 4350 states have internal predecessors, (15187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:42,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:42,405 INFO L93 Difference]: Finished difference Result 4843 states and 16407 transitions. [2021-10-08 16:00:42,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:00:42,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-08 16:00:42,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:42,488 INFO L225 Difference]: With dead ends: 4843 [2021-10-08 16:00:42,488 INFO L226 Difference]: Without dead ends: 4843 [2021-10-08 16:00:42,489 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:00:42,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4843 states. [2021-10-08 16:00:42,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4843 to 2428. [2021-10-08 16:00:42,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2428 states, 2031 states have (on average 4.0438207779419) internal successors, (8213), 2427 states have internal predecessors, (8213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:42,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2428 states to 2428 states and 8213 transitions. [2021-10-08 16:00:42,912 INFO L78 Accepts]: Start accepts. Automaton has 2428 states and 8213 transitions. Word has length 2 [2021-10-08 16:00:42,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:42,913 INFO L470 AbstractCegarLoop]: Abstraction has 2428 states and 8213 transitions. [2021-10-08 16:00:42,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:42,913 INFO L276 IsEmpty]: Start isEmpty. Operand 2428 states and 8213 transitions. [2021-10-08 16:00:42,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 16:00:42,914 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:42,914 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 16:00:42,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-08 16:00:42,915 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:00:42,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:42,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1417975, now seen corresponding path program 1 times [2021-10-08 16:00:42,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:42,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704450081] [2021-10-08 16:00:42,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:42,917 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:42,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:43,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:43,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:43,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704450081] [2021-10-08 16:00:43,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704450081] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:43,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388122539] [2021-10-08 16:00:43,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:43,025 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:43,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:43,028 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:43,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-08 16:00:43,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:43,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:00:43,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:43,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:43,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388122539] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:43,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:00:43,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2021-10-08 16:00:43,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846988474] [2021-10-08 16:00:43,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:00:43,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:43,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:00:43,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:00:43,275 INFO L87 Difference]: Start difference. First operand 2428 states and 8213 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:43,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:43,451 INFO L93 Difference]: Finished difference Result 4840 states and 16404 transitions. [2021-10-08 16:00:43,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:00:43,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-08 16:00:43,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:43,520 INFO L225 Difference]: With dead ends: 4840 [2021-10-08 16:00:43,520 INFO L226 Difference]: Without dead ends: 4840 [2021-10-08 16:00:43,521 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:00:43,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4840 states. [2021-10-08 16:00:43,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4840 to 2425. [2021-10-08 16:00:43,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2425 states, 2031 states have (on average 4.042343673067454) internal successors, (8210), 2424 states have internal predecessors, (8210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:43,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2425 states to 2425 states and 8210 transitions. [2021-10-08 16:00:43,766 INFO L78 Accepts]: Start accepts. Automaton has 2425 states and 8210 transitions. Word has length 3 [2021-10-08 16:00:43,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:43,768 INFO L470 AbstractCegarLoop]: Abstraction has 2425 states and 8210 transitions. [2021-10-08 16:00:43,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:43,769 INFO L276 IsEmpty]: Start isEmpty. Operand 2425 states and 8210 transitions. [2021-10-08 16:00:43,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 16:00:43,770 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:43,770 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 16:00:43,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-08 16:00:43,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:43,985 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:00:43,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:43,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1417976, now seen corresponding path program 1 times [2021-10-08 16:00:43,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:43,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822142449] [2021-10-08 16:00:43,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:43,987 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:44,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:44,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:44,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:44,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822142449] [2021-10-08 16:00:44,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822142449] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:44,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996775752] [2021-10-08 16:00:44,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:44,036 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:44,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:44,037 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:44,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-08 16:00:44,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:44,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:00:44,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:44,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:44,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996775752] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:44,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:00:44,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 3 [2021-10-08 16:00:44,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643476489] [2021-10-08 16:00:44,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 16:00:44,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:44,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 16:00:44,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:00:44,167 INFO L87 Difference]: Start difference. First operand 2425 states and 8210 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:44,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:44,311 INFO L93 Difference]: Finished difference Result 7258 states and 24604 transitions. [2021-10-08 16:00:44,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:00:44,312 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-08 16:00:44,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:44,384 INFO L225 Difference]: With dead ends: 7258 [2021-10-08 16:00:44,384 INFO L226 Difference]: Without dead ends: 7258 [2021-10-08 16:00:44,384 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.4ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:00:44,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7258 states. [2021-10-08 16:00:44,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7258 to 2428. [2021-10-08 16:00:44,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2428 states, 2034 states have (on average 4.039331366764995) internal successors, (8216), 2427 states have internal predecessors, (8216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:44,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2428 states to 2428 states and 8216 transitions. [2021-10-08 16:00:44,646 INFO L78 Accepts]: Start accepts. Automaton has 2428 states and 8216 transitions. Word has length 3 [2021-10-08 16:00:44,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:44,647 INFO L470 AbstractCegarLoop]: Abstraction has 2428 states and 8216 transitions. [2021-10-08 16:00:44,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:44,648 INFO L276 IsEmpty]: Start isEmpty. Operand 2428 states and 8216 transitions. [2021-10-08 16:00:44,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-08 16:00:44,648 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:44,649 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-08 16:00:44,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-08 16:00:44,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:44,864 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:00:44,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:44,865 INFO L82 PathProgramCache]: Analyzing trace with hash 43959524, now seen corresponding path program 2 times [2021-10-08 16:00:44,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:44,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721587922] [2021-10-08 16:00:44,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:44,866 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:44,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:44,954 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:44,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:44,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721587922] [2021-10-08 16:00:44,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721587922] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:44,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101871455] [2021-10-08 16:00:44,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:00:44,956 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:44,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:44,959 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:44,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-08 16:00:45,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:00:45,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:00:45,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 16:00:45,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:45,061 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:00:45,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101871455] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:45,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:00:45,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-08 16:00:45,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208814105] [2021-10-08 16:00:45,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:00:45,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:45,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:00:45,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:00:45,065 INFO L87 Difference]: Start difference. First operand 2428 states and 8216 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:45,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:45,111 INFO L93 Difference]: Finished difference Result 2427 states and 8215 transitions. [2021-10-08 16:00:45,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:00:45,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-08 16:00:45,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:45,129 INFO L225 Difference]: With dead ends: 2427 [2021-10-08 16:00:45,129 INFO L226 Difference]: Without dead ends: 2427 [2021-10-08 16:00:45,130 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 15.8ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:00:45,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2427 states. [2021-10-08 16:00:45,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2427 to 2425. [2021-10-08 16:00:45,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2425 states, 2032 states have (on average 4.040846456692913) internal successors, (8211), 2424 states have internal predecessors, (8211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:45,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2425 states to 2425 states and 8211 transitions. [2021-10-08 16:00:45,232 INFO L78 Accepts]: Start accepts. Automaton has 2425 states and 8211 transitions. Word has length 4 [2021-10-08 16:00:45,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:45,233 INFO L470 AbstractCegarLoop]: Abstraction has 2425 states and 8211 transitions. [2021-10-08 16:00:45,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:45,233 INFO L276 IsEmpty]: Start isEmpty. Operand 2425 states and 8211 transitions. [2021-10-08 16:00:45,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 16:00:45,234 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:45,234 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2021-10-08 16:00:45,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-08 16:00:45,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:45,448 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:00:45,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:45,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1363728626, now seen corresponding path program 1 times [2021-10-08 16:00:45,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:45,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121312461] [2021-10-08 16:00:45,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:45,451 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:45,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:45,548 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:45,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:45,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121312461] [2021-10-08 16:00:45,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121312461] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:45,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65637322] [2021-10-08 16:00:45,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:45,549 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:45,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:45,554 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:45,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-08 16:00:45,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:45,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 16:00:45,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:45,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:45,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65637322] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:45,680 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:00:45,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-10-08 16:00:45,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914309675] [2021-10-08 16:00:45,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 16:00:45,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:45,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 16:00:45,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:00:45,682 INFO L87 Difference]: Start difference. First operand 2425 states and 8211 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:45,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:45,992 INFO L93 Difference]: Finished difference Result 9675 states and 32803 transitions. [2021-10-08 16:00:45,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 16:00:45,993 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-08 16:00:45,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:46,062 INFO L225 Difference]: With dead ends: 9675 [2021-10-08 16:00:46,062 INFO L226 Difference]: Without dead ends: 9675 [2021-10-08 16:00:46,063 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 10.0ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:00:46,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9675 states. [2021-10-08 16:00:46,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9675 to 2427. [2021-10-08 16:00:46,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2427 states, 2034 states have (on average 4.038839724680432) internal successors, (8215), 2426 states have internal predecessors, (8215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:46,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2427 states to 2427 states and 8215 transitions. [2021-10-08 16:00:46,251 INFO L78 Accepts]: Start accepts. Automaton has 2427 states and 8215 transitions. Word has length 5 [2021-10-08 16:00:46,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:46,251 INFO L470 AbstractCegarLoop]: Abstraction has 2427 states and 8215 transitions. [2021-10-08 16:00:46,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:46,252 INFO L276 IsEmpty]: Start isEmpty. Operand 2427 states and 8215 transitions. [2021-10-08 16:00:46,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-08 16:00:46,252 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:46,252 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2021-10-08 16:00:46,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-08 16:00:46,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:46,466 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:00:46,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:46,467 INFO L82 PathProgramCache]: Analyzing trace with hash -674083198, now seen corresponding path program 2 times [2021-10-08 16:00:46,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:46,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621135631] [2021-10-08 16:00:46,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:46,468 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:46,545 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:46,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:46,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621135631] [2021-10-08 16:00:46,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621135631] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:46,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282277949] [2021-10-08 16:00:46,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:00:46,546 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:46,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:46,547 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:46,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-08 16:00:46,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:00:46,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:00:46,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 16:00:46,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:46,673 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:00:46,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282277949] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:46,674 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:00:46,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2021-10-08 16:00:46,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246611619] [2021-10-08 16:00:46,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:00:46,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:46,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:00:46,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:00:46,678 INFO L87 Difference]: Start difference. First operand 2427 states and 8215 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:46,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:46,775 INFO L93 Difference]: Finished difference Result 1970 states and 6650 transitions. [2021-10-08 16:00:46,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:00:46,775 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-08 16:00:46,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:46,791 INFO L225 Difference]: With dead ends: 1970 [2021-10-08 16:00:46,791 INFO L226 Difference]: Without dead ends: 1970 [2021-10-08 16:00:46,792 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 29.6ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-08 16:00:46,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1970 states. [2021-10-08 16:00:46,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1970 to 1967. [2021-10-08 16:00:46,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1967 states, 1679 states have (on average 3.9571173317450863) internal successors, (6644), 1966 states have internal predecessors, (6644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:46,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1967 states to 1967 states and 6644 transitions. [2021-10-08 16:00:46,901 INFO L78 Accepts]: Start accepts. Automaton has 1967 states and 6644 transitions. Word has length 6 [2021-10-08 16:00:46,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:46,907 INFO L470 AbstractCegarLoop]: Abstraction has 1967 states and 6644 transitions. [2021-10-08 16:00:46,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:46,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1967 states and 6644 transitions. [2021-10-08 16:00:46,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 16:00:46,909 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:46,909 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:46,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-08 16:00:47,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:47,125 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:00:47,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:47,126 INFO L82 PathProgramCache]: Analyzing trace with hash 608352248, now seen corresponding path program 1 times [2021-10-08 16:00:47,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:47,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063744009] [2021-10-08 16:00:47,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:47,128 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:47,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:47,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:47,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:47,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063744009] [2021-10-08 16:00:47,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063744009] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:47,195 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:00:47,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 16:00:47,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899195080] [2021-10-08 16:00:47,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:00:47,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:47,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:00:47,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:00:47,197 INFO L87 Difference]: Start difference. First operand 1967 states and 6644 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:47,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:47,304 INFO L93 Difference]: Finished difference Result 2129 states and 7025 transitions. [2021-10-08 16:00:47,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 16:00:47,305 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-08 16:00:47,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:47,321 INFO L225 Difference]: With dead ends: 2129 [2021-10-08 16:00:47,321 INFO L226 Difference]: Without dead ends: 2113 [2021-10-08 16:00:47,322 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:00:47,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2113 states. [2021-10-08 16:00:47,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2113 to 2042. [2021-10-08 16:00:47,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2042 states, 1749 states have (on average 3.89937106918239) internal successors, (6820), 2041 states have internal predecessors, (6820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:47,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2042 states to 2042 states and 6820 transitions. [2021-10-08 16:00:47,409 INFO L78 Accepts]: Start accepts. Automaton has 2042 states and 6820 transitions. Word has length 7 [2021-10-08 16:00:47,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:47,410 INFO L470 AbstractCegarLoop]: Abstraction has 2042 states and 6820 transitions. [2021-10-08 16:00:47,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:47,410 INFO L276 IsEmpty]: Start isEmpty. Operand 2042 states and 6820 transitions. [2021-10-08 16:00:47,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 16:00:47,411 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:47,411 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1] [2021-10-08 16:00:47,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-08 16:00:47,411 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:00:47,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:47,412 INFO L82 PathProgramCache]: Analyzing trace with hash 607442940, now seen corresponding path program 1 times [2021-10-08 16:00:47,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:47,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473773404] [2021-10-08 16:00:47,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:47,413 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:47,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:47,473 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:47,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:47,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473773404] [2021-10-08 16:00:47,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473773404] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:47,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074488196] [2021-10-08 16:00:47,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:47,474 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:47,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:47,475 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:47,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-08 16:00:47,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:47,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 16:00:47,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:47,600 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:47,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074488196] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:47,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:00:47,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-10-08 16:00:47,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525987911] [2021-10-08 16:00:47,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 16:00:47,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:47,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 16:00:47,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-08 16:00:47,603 INFO L87 Difference]: Start difference. First operand 2042 states and 6820 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:47,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:47,865 INFO L93 Difference]: Finished difference Result 10167 states and 34018 transitions. [2021-10-08 16:00:47,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:00:47,866 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-08 16:00:47,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:47,948 INFO L225 Difference]: With dead ends: 10167 [2021-10-08 16:00:47,948 INFO L226 Difference]: Without dead ends: 10167 [2021-10-08 16:00:47,948 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 15.5ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-08 16:00:47,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10167 states. [2021-10-08 16:00:48,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10167 to 2044. [2021-10-08 16:00:48,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2044 states, 1751 states have (on average 3.8972015990862365) internal successors, (6824), 2043 states have internal predecessors, (6824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:48,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2044 states to 2044 states and 6824 transitions. [2021-10-08 16:00:48,133 INFO L78 Accepts]: Start accepts. Automaton has 2044 states and 6824 transitions. Word has length 7 [2021-10-08 16:00:48,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:48,133 INFO L470 AbstractCegarLoop]: Abstraction has 2044 states and 6824 transitions. [2021-10-08 16:00:48,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:48,134 INFO L276 IsEmpty]: Start isEmpty. Operand 2044 states and 6824 transitions. [2021-10-08 16:00:48,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-08 16:00:48,134 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:48,135 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:48,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-08 16:00:48,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:48,350 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:00:48,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:48,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1739521052, now seen corresponding path program 1 times [2021-10-08 16:00:48,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:48,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251327392] [2021-10-08 16:00:48,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:48,353 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:48,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:48,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:48,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:48,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251327392] [2021-10-08 16:00:48,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251327392] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:48,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420465384] [2021-10-08 16:00:48,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:48,490 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:48,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:48,492 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:48,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-08 16:00:48,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:48,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 16:00:48,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:48,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:00:48,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420465384] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:48,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:00:48,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2021-10-08 16:00:48,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016182958] [2021-10-08 16:00:48,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:00:48,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:48,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:00:48,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-08 16:00:48,624 INFO L87 Difference]: Start difference. First operand 2044 states and 6824 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:48,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:48,652 INFO L93 Difference]: Finished difference Result 1538 states and 5094 transitions. [2021-10-08 16:00:48,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:00:48,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-08 16:00:48,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:48,663 INFO L225 Difference]: With dead ends: 1538 [2021-10-08 16:00:48,663 INFO L226 Difference]: Without dead ends: 1538 [2021-10-08 16:00:48,664 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 20.2ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-08 16:00:48,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1538 states. [2021-10-08 16:00:48,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1538 to 1538. [2021-10-08 16:00:48,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1538 states, 1353 states have (on average 3.764966740576497) internal successors, (5094), 1537 states have internal predecessors, (5094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:48,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 5094 transitions. [2021-10-08 16:00:48,720 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 5094 transitions. Word has length 8 [2021-10-08 16:00:48,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:48,722 INFO L470 AbstractCegarLoop]: Abstraction has 1538 states and 5094 transitions. [2021-10-08 16:00:48,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:48,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 5094 transitions. [2021-10-08 16:00:48,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-08 16:00:48,723 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:48,723 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:48,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-08 16:00:48,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:48,938 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:00:48,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:48,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1739521051, now seen corresponding path program 1 times [2021-10-08 16:00:48,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:48,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527827625] [2021-10-08 16:00:48,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:48,941 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:48,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:00:48,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:48,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527827625] [2021-10-08 16:00:48,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527827625] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:48,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:00:48,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 16:00:48,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768436980] [2021-10-08 16:00:48,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:00:48,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:48,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:00:48,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:00:48,975 INFO L87 Difference]: Start difference. First operand 1538 states and 5094 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:49,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:49,011 INFO L93 Difference]: Finished difference Result 2552 states and 8493 transitions. [2021-10-08 16:00:49,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:00:49,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-08 16:00:49,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:49,027 INFO L225 Difference]: With dead ends: 2552 [2021-10-08 16:00:49,028 INFO L226 Difference]: Without dead ends: 2552 [2021-10-08 16:00:49,028 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:00:49,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2552 states. [2021-10-08 16:00:49,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2552 to 1684. [2021-10-08 16:00:49,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 1499 states have (on average 3.827885256837892) internal successors, (5738), 1683 states have internal predecessors, (5738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:49,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 5738 transitions. [2021-10-08 16:00:49,118 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 5738 transitions. Word has length 8 [2021-10-08 16:00:49,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:49,118 INFO L470 AbstractCegarLoop]: Abstraction has 1684 states and 5738 transitions. [2021-10-08 16:00:49,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:49,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 5738 transitions. [2021-10-08 16:00:49,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-08 16:00:49,120 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:49,120 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2021-10-08 16:00:49,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-08 16:00:49,122 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:00:49,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:49,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1650864960, now seen corresponding path program 2 times [2021-10-08 16:00:49,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:49,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280122420] [2021-10-08 16:00:49,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:49,124 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:49,206 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:49,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:49,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280122420] [2021-10-08 16:00:49,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280122420] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:49,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354003153] [2021-10-08 16:00:49,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:00:49,212 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:49,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:49,213 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:49,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-08 16:00:49,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:00:49,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:00:49,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 16:00:49,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:49,352 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-08 16:00:49,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354003153] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:49,353 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:00:49,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2021-10-08 16:00:49,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773791522] [2021-10-08 16:00:49,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:00:49,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:49,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:00:49,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-10-08 16:00:49,356 INFO L87 Difference]: Start difference. First operand 1684 states and 5738 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:49,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:49,412 INFO L93 Difference]: Finished difference Result 1367 states and 4644 transitions. [2021-10-08 16:00:49,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:00:49,413 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-08 16:00:49,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:49,423 INFO L225 Difference]: With dead ends: 1367 [2021-10-08 16:00:49,423 INFO L226 Difference]: Without dead ends: 1367 [2021-10-08 16:00:49,424 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 27.4ms TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:00:49,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1367 states. [2021-10-08 16:00:49,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1367 to 1359. [2021-10-08 16:00:49,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1359 states, 1231 states have (on average 3.759545085296507) internal successors, (4628), 1358 states have internal predecessors, (4628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:49,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 4628 transitions. [2021-10-08 16:00:49,472 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 4628 transitions. Word has length 8 [2021-10-08 16:00:49,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:49,473 INFO L470 AbstractCegarLoop]: Abstraction has 1359 states and 4628 transitions. [2021-10-08 16:00:49,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:49,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 4628 transitions. [2021-10-08 16:00:49,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-08 16:00:49,474 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:49,474 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:49,515 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-10-08 16:00:49,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-08 16:00:49,689 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:00:49,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:49,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1909423617, now seen corresponding path program 1 times [2021-10-08 16:00:49,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:49,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157238247] [2021-10-08 16:00:49,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:49,691 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:49,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:49,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:00:49,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:49,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157238247] [2021-10-08 16:00:49,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157238247] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:49,726 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:00:49,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 16:00:49,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825938852] [2021-10-08 16:00:49,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:00:49,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:49,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:00:49,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:00:49,728 INFO L87 Difference]: Start difference. First operand 1359 states and 4628 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:49,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:49,779 INFO L93 Difference]: Finished difference Result 1705 states and 6252 transitions. [2021-10-08 16:00:49,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:00:49,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-08 16:00:49,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:49,790 INFO L225 Difference]: With dead ends: 1705 [2021-10-08 16:00:49,791 INFO L226 Difference]: Without dead ends: 1705 [2021-10-08 16:00:49,791 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:00:49,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2021-10-08 16:00:49,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1483. [2021-10-08 16:00:49,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1483 states, 1355 states have (on average 4.035424354243543) internal successors, (5468), 1482 states have internal predecessors, (5468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:49,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1483 states to 1483 states and 5468 transitions. [2021-10-08 16:00:49,849 INFO L78 Accepts]: Start accepts. Automaton has 1483 states and 5468 transitions. Word has length 9 [2021-10-08 16:00:49,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:49,850 INFO L470 AbstractCegarLoop]: Abstraction has 1483 states and 5468 transitions. [2021-10-08 16:00:49,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:49,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1483 states and 5468 transitions. [2021-10-08 16:00:49,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 16:00:49,851 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:49,851 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:49,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-08 16:00:49,852 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:00:49,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:49,852 INFO L82 PathProgramCache]: Analyzing trace with hash -937407926, now seen corresponding path program 1 times [2021-10-08 16:00:49,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:49,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362742672] [2021-10-08 16:00:49,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:49,853 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:49,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:00:49,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:49,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362742672] [2021-10-08 16:00:49,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362742672] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:49,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386948492] [2021-10-08 16:00:49,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:49,915 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:49,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:49,916 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:49,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-08 16:00:50,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:50,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 16:00:50,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:50,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:00:50,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386948492] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:50,158 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:00:50,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-08 16:00:50,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098078010] [2021-10-08 16:00:50,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:00:50,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:50,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:00:50,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:00:50,160 INFO L87 Difference]: Start difference. First operand 1483 states and 5468 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:50,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:50,287 INFO L93 Difference]: Finished difference Result 1763 states and 6414 transitions. [2021-10-08 16:00:50,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:00:50,288 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-08 16:00:50,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:50,298 INFO L225 Difference]: With dead ends: 1763 [2021-10-08 16:00:50,299 INFO L226 Difference]: Without dead ends: 1763 [2021-10-08 16:00:50,299 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 30.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-10-08 16:00:50,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2021-10-08 16:00:50,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 1353. [2021-10-08 16:00:50,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1353 states, 1250 states have (on average 3.9808) internal successors, (4976), 1352 states have internal predecessors, (4976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:50,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1353 states to 1353 states and 4976 transitions. [2021-10-08 16:00:50,349 INFO L78 Accepts]: Start accepts. Automaton has 1353 states and 4976 transitions. Word has length 10 [2021-10-08 16:00:50,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:50,350 INFO L470 AbstractCegarLoop]: Abstraction has 1353 states and 4976 transitions. [2021-10-08 16:00:50,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:50,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1353 states and 4976 transitions. [2021-10-08 16:00:50,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 16:00:50,351 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:50,351 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:50,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-08 16:00:50,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:50,565 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:00:50,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:50,565 INFO L82 PathProgramCache]: Analyzing trace with hash -937407930, now seen corresponding path program 1 times [2021-10-08 16:00:50,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:50,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733114764] [2021-10-08 16:00:50,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:50,566 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:50,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:50,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:00:50,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:50,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733114764] [2021-10-08 16:00:50,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733114764] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:50,637 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:00:50,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 16:00:50,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60159276] [2021-10-08 16:00:50,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:00:50,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:50,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:00:50,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:00:50,638 INFO L87 Difference]: Start difference. First operand 1353 states and 4976 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:50,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:50,652 INFO L93 Difference]: Finished difference Result 1223 states and 4484 transitions. [2021-10-08 16:00:50,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:00:50,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-08 16:00:50,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:50,660 INFO L225 Difference]: With dead ends: 1223 [2021-10-08 16:00:50,660 INFO L226 Difference]: Without dead ends: 1223 [2021-10-08 16:00:50,661 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:00:50,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2021-10-08 16:00:50,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1045. [2021-10-08 16:00:50,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1045 states, 967 states have (on average 3.7724922440537747) internal successors, (3648), 1044 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:50,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 3648 transitions. [2021-10-08 16:00:50,697 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 3648 transitions. Word has length 10 [2021-10-08 16:00:50,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:50,697 INFO L470 AbstractCegarLoop]: Abstraction has 1045 states and 3648 transitions. [2021-10-08 16:00:50,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:50,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 3648 transitions. [2021-10-08 16:00:50,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 16:00:50,698 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:50,698 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:50,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-08 16:00:50,699 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:00:50,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:50,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1043442514, now seen corresponding path program 1 times [2021-10-08 16:00:50,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:50,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776346228] [2021-10-08 16:00:50,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:50,700 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:50,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:50,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:00:50,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:50,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776346228] [2021-10-08 16:00:50,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776346228] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:50,744 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:00:50,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-08 16:00:50,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776336336] [2021-10-08 16:00:50,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:00:50,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:50,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:00:50,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:00:50,746 INFO L87 Difference]: Start difference. First operand 1045 states and 3648 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:50,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:50,855 INFO L93 Difference]: Finished difference Result 1295 states and 4240 transitions. [2021-10-08 16:00:50,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 16:00:50,855 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-08 16:00:50,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:50,862 INFO L225 Difference]: With dead ends: 1295 [2021-10-08 16:00:50,862 INFO L226 Difference]: Without dead ends: 1047 [2021-10-08 16:00:50,862 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:00:50,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2021-10-08 16:00:50,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 1047. [2021-10-08 16:00:50,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 969 states have (on average 3.766769865841073) internal successors, (3650), 1046 states have internal predecessors, (3650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:50,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 3650 transitions. [2021-10-08 16:00:50,895 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 3650 transitions. Word has length 11 [2021-10-08 16:00:50,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:50,895 INFO L470 AbstractCegarLoop]: Abstraction has 1047 states and 3650 transitions. [2021-10-08 16:00:50,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:50,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 3650 transitions. [2021-10-08 16:00:50,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-08 16:00:50,896 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:50,896 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:50,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-08 16:00:50,897 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:00:50,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:50,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1631357210, now seen corresponding path program 1 times [2021-10-08 16:00:50,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:50,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586257902] [2021-10-08 16:00:50,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:50,898 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:50,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:00:50,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:50,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586257902] [2021-10-08 16:00:50,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586257902] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:50,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:00:50,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-08 16:00:50,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903045239] [2021-10-08 16:00:50,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:00:50,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:50,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:00:50,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:00:50,961 INFO L87 Difference]: Start difference. First operand 1047 states and 3650 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:50,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:50,986 INFO L93 Difference]: Finished difference Result 1055 states and 3618 transitions. [2021-10-08 16:00:50,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:00:50,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-08 16:00:50,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:50,993 INFO L225 Difference]: With dead ends: 1055 [2021-10-08 16:00:50,993 INFO L226 Difference]: Without dead ends: 1055 [2021-10-08 16:00:50,994 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:00:50,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2021-10-08 16:00:51,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 1055. [2021-10-08 16:00:51,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1055 states, 967 states have (on average 3.7414684591520166) internal successors, (3618), 1054 states have internal predecessors, (3618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:51,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 3618 transitions. [2021-10-08 16:00:51,026 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 3618 transitions. Word has length 12 [2021-10-08 16:00:51,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:51,026 INFO L470 AbstractCegarLoop]: Abstraction has 1055 states and 3618 transitions. [2021-10-08 16:00:51,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:51,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 3618 transitions. [2021-10-08 16:00:51,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-08 16:00:51,027 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:51,027 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:51,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-08 16:00:51,027 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:00:51,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:51,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1404269665, now seen corresponding path program 1 times [2021-10-08 16:00:51,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:51,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074996309] [2021-10-08 16:00:51,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:51,029 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:51,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:51,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:00:51,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:51,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074996309] [2021-10-08 16:00:51,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074996309] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:51,071 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:00:51,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-08 16:00:51,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280161937] [2021-10-08 16:00:51,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:00:51,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:51,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:00:51,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:00:51,073 INFO L87 Difference]: Start difference. First operand 1055 states and 3618 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:51,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:51,143 INFO L93 Difference]: Finished difference Result 1315 states and 4324 transitions. [2021-10-08 16:00:51,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:00:51,144 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-08 16:00:51,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:51,152 INFO L225 Difference]: With dead ends: 1315 [2021-10-08 16:00:51,153 INFO L226 Difference]: Without dead ends: 1260 [2021-10-08 16:00:51,153 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:00:51,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2021-10-08 16:00:51,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1260. [2021-10-08 16:00:51,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1260 states, 1168 states have (on average 3.594178082191781) internal successors, (4198), 1259 states have internal predecessors, (4198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:51,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 4198 transitions. [2021-10-08 16:00:51,193 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 4198 transitions. Word has length 12 [2021-10-08 16:00:51,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:51,193 INFO L470 AbstractCegarLoop]: Abstraction has 1260 states and 4198 transitions. [2021-10-08 16:00:51,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:51,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 4198 transitions. [2021-10-08 16:00:51,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-08 16:00:51,194 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:51,194 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:51,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-08 16:00:51,195 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:00:51,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:51,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1990241413, now seen corresponding path program 1 times [2021-10-08 16:00:51,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:51,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941730039] [2021-10-08 16:00:51,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:51,196 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:51,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:51,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:00:51,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:51,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941730039] [2021-10-08 16:00:51,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941730039] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:51,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:00:51,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 16:00:51,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312034282] [2021-10-08 16:00:51,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:00:51,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:51,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:00:51,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:00:51,247 INFO L87 Difference]: Start difference. First operand 1260 states and 4198 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:51,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:51,298 INFO L93 Difference]: Finished difference Result 1184 states and 3933 transitions. [2021-10-08 16:00:51,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:00:51,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-08 16:00:51,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:51,306 INFO L225 Difference]: With dead ends: 1184 [2021-10-08 16:00:51,306 INFO L226 Difference]: Without dead ends: 1151 [2021-10-08 16:00:51,306 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:00:51,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2021-10-08 16:00:51,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 1019. [2021-10-08 16:00:51,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 941 states have (on average 3.7056323060573857) internal successors, (3487), 1018 states have internal predecessors, (3487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:51,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 3487 transitions. [2021-10-08 16:00:51,343 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 3487 transitions. Word has length 13 [2021-10-08 16:00:51,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:51,343 INFO L470 AbstractCegarLoop]: Abstraction has 1019 states and 3487 transitions. [2021-10-08 16:00:51,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:51,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 3487 transitions. [2021-10-08 16:00:51,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 16:00:51,344 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:51,344 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:51,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-08 16:00:51,345 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:00:51,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:51,345 INFO L82 PathProgramCache]: Analyzing trace with hash -138129797, now seen corresponding path program 1 times [2021-10-08 16:00:51,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:51,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412978314] [2021-10-08 16:00:51,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:51,346 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:51,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:51,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:51,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:51,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412978314] [2021-10-08 16:00:51,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412978314] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:51,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799940505] [2021-10-08 16:00:51,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:51,814 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:51,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:51,816 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:51,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-08 16:00:51,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:51,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:00:51,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:52,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-08 16:00:52,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:00:52,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799940505] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:52,051 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:00:52,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 12 [2021-10-08 16:00:52,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764968129] [2021-10-08 16:00:52,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 16:00:52,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:52,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 16:00:52,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-10-08 16:00:52,053 INFO L87 Difference]: Start difference. First operand 1019 states and 3487 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:52,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:52,165 INFO L93 Difference]: Finished difference Result 1163 states and 3799 transitions. [2021-10-08 16:00:52,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 16:00:52,165 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-08 16:00:52,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:52,171 INFO L225 Difference]: With dead ends: 1163 [2021-10-08 16:00:52,172 INFO L226 Difference]: Without dead ends: 1163 [2021-10-08 16:00:52,172 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 189.9ms TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-10-08 16:00:52,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2021-10-08 16:00:52,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1081. [2021-10-08 16:00:52,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 1003 states have (on average 3.6600199401794615) internal successors, (3671), 1080 states have internal predecessors, (3671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:52,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 3671 transitions. [2021-10-08 16:00:52,205 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 3671 transitions. Word has length 14 [2021-10-08 16:00:52,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:52,206 INFO L470 AbstractCegarLoop]: Abstraction has 1081 states and 3671 transitions. [2021-10-08 16:00:52,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:52,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 3671 transitions. [2021-10-08 16:00:52,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 16:00:52,207 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:52,207 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:52,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-08 16:00:52,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:52,421 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:00:52,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:52,422 INFO L82 PathProgramCache]: Analyzing trace with hash -138129796, now seen corresponding path program 1 times [2021-10-08 16:00:52,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:52,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491113893] [2021-10-08 16:00:52,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:52,423 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:52,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:00:52,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:52,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491113893] [2021-10-08 16:00:52,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491113893] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:52,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691660813] [2021-10-08 16:00:52,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:52,597 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:52,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:52,599 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:52,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-08 16:00:52,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:52,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:00:52,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:52,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-08 16:00:52,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:00:52,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691660813] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:52,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:00:52,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2021-10-08 16:00:52,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353059440] [2021-10-08 16:00:52,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 16:00:52,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:52,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 16:00:52,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:00:52,795 INFO L87 Difference]: Start difference. First operand 1081 states and 3671 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:52,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:52,915 INFO L93 Difference]: Finished difference Result 1223 states and 3911 transitions. [2021-10-08 16:00:52,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 16:00:52,916 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-08 16:00:52,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:52,923 INFO L225 Difference]: With dead ends: 1223 [2021-10-08 16:00:52,923 INFO L226 Difference]: Without dead ends: 1223 [2021-10-08 16:00:52,924 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 78.6ms TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:00:52,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2021-10-08 16:00:52,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1081. [2021-10-08 16:00:52,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 1003 states have (on average 3.6400797607178466) internal successors, (3651), 1080 states have internal predecessors, (3651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:52,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 3651 transitions. [2021-10-08 16:00:52,956 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 3651 transitions. Word has length 14 [2021-10-08 16:00:52,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:52,957 INFO L470 AbstractCegarLoop]: Abstraction has 1081 states and 3651 transitions. [2021-10-08 16:00:52,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:52,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 3651 transitions. [2021-10-08 16:00:52,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 16:00:52,958 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:52,958 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:52,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-08 16:00:53,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:53,171 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:00:53,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:53,172 INFO L82 PathProgramCache]: Analyzing trace with hash -138129598, now seen corresponding path program 1 times [2021-10-08 16:00:53,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:53,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485046851] [2021-10-08 16:00:53,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:53,173 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:53,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:53,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:00:53,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:53,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485046851] [2021-10-08 16:00:53,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485046851] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:53,221 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:00:53,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 16:00:53,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058854551] [2021-10-08 16:00:53,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:00:53,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:53,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:00:53,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:00:53,226 INFO L87 Difference]: Start difference. First operand 1081 states and 3651 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:53,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:53,247 INFO L93 Difference]: Finished difference Result 1289 states and 4182 transitions. [2021-10-08 16:00:53,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:00:53,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-08 16:00:53,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:53,254 INFO L225 Difference]: With dead ends: 1289 [2021-10-08 16:00:53,255 INFO L226 Difference]: Without dead ends: 1289 [2021-10-08 16:00:53,255 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:00:53,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2021-10-08 16:00:53,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 1125. [2021-10-08 16:00:53,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1125 states, 1047 states have (on average 3.632282712511939) internal successors, (3803), 1124 states have internal predecessors, (3803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:53,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 3803 transitions. [2021-10-08 16:00:53,299 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 3803 transitions. Word has length 14 [2021-10-08 16:00:53,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:53,299 INFO L470 AbstractCegarLoop]: Abstraction has 1125 states and 3803 transitions. [2021-10-08 16:00:53,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:53,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 3803 transitions. [2021-10-08 16:00:53,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 16:00:53,301 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:53,301 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:53,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-08 16:00:53,301 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:00:53,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:53,302 INFO L82 PathProgramCache]: Analyzing trace with hash -138129657, now seen corresponding path program 1 times [2021-10-08 16:00:53,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:53,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87670530] [2021-10-08 16:00:53,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:53,303 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:53,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:53,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:53,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:53,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87670530] [2021-10-08 16:00:53,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87670530] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:53,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825934714] [2021-10-08 16:00:53,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:53,741 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:53,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:53,742 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:53,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-08 16:00:53,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:53,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-08 16:00:53,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:54,046 INFO L354 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2021-10-08 16:00:54,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 111 treesize of output 137 [2021-10-08 16:00:55,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-08 16:00:55,844 INFO L354 Elim1Store]: treesize reduction 136, result has 34.9 percent of original size [2021-10-08 16:00:55,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 26 case distinctions, treesize of input 72 treesize of output 128 [2021-10-08 16:00:56,030 INFO L354 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2021-10-08 16:00:56,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 46 [2021-10-08 16:00:56,131 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:00:56,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2021-10-08 16:00:56,248 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:00:56,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2021-10-08 16:00:56,464 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-08 16:00:56,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 21 [2021-10-08 16:00:56,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:56,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825934714] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:56,499 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:00:56,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 16:00:56,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625038084] [2021-10-08 16:00:56,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 16:00:56,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:56,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 16:00:56,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2021-10-08 16:00:56,501 INFO L87 Difference]: Start difference. First operand 1125 states and 3803 transitions. Second operand has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:58,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:58,812 INFO L93 Difference]: Finished difference Result 1631 states and 5243 transitions. [2021-10-08 16:00:58,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 16:00:58,812 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-08 16:00:58,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:58,819 INFO L225 Difference]: With dead ends: 1631 [2021-10-08 16:00:58,819 INFO L226 Difference]: Without dead ends: 1621 [2021-10-08 16:00:58,820 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1538.5ms TimeCoverageRelationStatistics Valid=214, Invalid=976, Unknown=0, NotChecked=0, Total=1190 [2021-10-08 16:00:58,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1621 states. [2021-10-08 16:00:58,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1621 to 1274. [2021-10-08 16:00:58,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 1196 states have (on average 3.6346153846153846) internal successors, (4347), 1273 states have internal predecessors, (4347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:58,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 4347 transitions. [2021-10-08 16:00:58,862 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 4347 transitions. Word has length 14 [2021-10-08 16:00:58,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:58,863 INFO L470 AbstractCegarLoop]: Abstraction has 1274 states and 4347 transitions. [2021-10-08 16:00:58,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:58,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 4347 transitions. [2021-10-08 16:00:58,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 16:00:58,864 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:58,864 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:58,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-08 16:00:59,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-10-08 16:00:59,080 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:00:59,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:59,080 INFO L82 PathProgramCache]: Analyzing trace with hash 583398614, now seen corresponding path program 2 times [2021-10-08 16:00:59,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:59,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875245212] [2021-10-08 16:00:59,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:59,081 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:59,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:59,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:00:59,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:59,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875245212] [2021-10-08 16:00:59,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875245212] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:59,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891011766] [2021-10-08 16:00:59,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:00:59,349 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:59,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:59,350 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:59,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-08 16:00:59,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:00:59,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:00:59,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:00:59,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:59,635 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:00:59,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:00:59,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-08 16:00:59,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:00:59,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891011766] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:59,681 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:00:59,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 13 [2021-10-08 16:00:59,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961945734] [2021-10-08 16:00:59,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:00:59,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:59,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:00:59,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:00:59,683 INFO L87 Difference]: Start difference. First operand 1274 states and 4347 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:59,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:59,851 INFO L93 Difference]: Finished difference Result 1402 states and 4642 transitions. [2021-10-08 16:00:59,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 16:00:59,852 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-08 16:00:59,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:59,856 INFO L225 Difference]: With dead ends: 1402 [2021-10-08 16:00:59,856 INFO L226 Difference]: Without dead ends: 1402 [2021-10-08 16:00:59,857 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 183.4ms TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2021-10-08 16:00:59,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2021-10-08 16:00:59,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 1324. [2021-10-08 16:00:59,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1324 states, 1246 states have (on average 3.620385232744783) internal successors, (4511), 1323 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:59,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 4511 transitions. [2021-10-08 16:00:59,897 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 4511 transitions. Word has length 14 [2021-10-08 16:00:59,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:59,898 INFO L470 AbstractCegarLoop]: Abstraction has 1324 states and 4511 transitions. [2021-10-08 16:00:59,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:59,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 4511 transitions. [2021-10-08 16:00:59,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 16:00:59,899 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:59,899 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:59,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-08 16:01:00,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-10-08 16:01:00,113 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:01:00,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:01:00,114 INFO L82 PathProgramCache]: Analyzing trace with hash 867238299, now seen corresponding path program 2 times [2021-10-08 16:01:00,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:01:00,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862619957] [2021-10-08 16:01:00,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:00,115 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:01:00,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:00,900 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:01:00,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:01:00,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862619957] [2021-10-08 16:01:00,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862619957] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:00,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962171793] [2021-10-08 16:01:00,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:01:00,901 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:00,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:01:00,902 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:01:00,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-08 16:01:01,106 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:01:01,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:01:01,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 16:01:01,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:01:01,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-08 16:01:01,241 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 16:01:01,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962171793] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:01:01,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:01:01,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 15 [2021-10-08 16:01:01,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491016660] [2021-10-08 16:01:01,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 16:01:01,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:01:01,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 16:01:01,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:01:01,243 INFO L87 Difference]: Start difference. First operand 1324 states and 4511 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:01,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:01:01,363 INFO L93 Difference]: Finished difference Result 1414 states and 4682 transitions. [2021-10-08 16:01:01,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:01:01,363 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 16:01:01,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:01:01,369 INFO L225 Difference]: With dead ends: 1414 [2021-10-08 16:01:01,369 INFO L226 Difference]: Without dead ends: 1395 [2021-10-08 16:01:01,370 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 309.7ms TimeCoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:01:01,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2021-10-08 16:01:01,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 1333. [2021-10-08 16:01:01,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1333 states, 1255 states have (on average 3.6063745019920317) internal successors, (4526), 1332 states have internal predecessors, (4526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:01,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 4526 transitions. [2021-10-08 16:01:01,426 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 4526 transitions. Word has length 15 [2021-10-08 16:01:01,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:01:01,426 INFO L470 AbstractCegarLoop]: Abstraction has 1333 states and 4526 transitions. [2021-10-08 16:01:01,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:01,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 4526 transitions. [2021-10-08 16:01:01,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 16:01:01,428 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:01:01,428 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:01:01,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-08 16:01:01,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:01,644 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:01:01,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:01:01,645 INFO L82 PathProgramCache]: Analyzing trace with hash 871995249, now seen corresponding path program 3 times [2021-10-08 16:01:01,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:01:01,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410856651] [2021-10-08 16:01:01,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:01,646 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:01:01,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:02,258 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:01:02,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:01:02,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410856651] [2021-10-08 16:01:02,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410856651] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:02,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53482264] [2021-10-08 16:01:02,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:01:02,259 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:02,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:01:02,261 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:01:02,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-08 16:01:02,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-08 16:01:02,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:01:02,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 16:01:02,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:01:02,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-08 16:01:02,589 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 16:01:02,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53482264] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:01:02,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:01:02,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 15 [2021-10-08 16:01:02,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942284818] [2021-10-08 16:01:02,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 16:01:02,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:01:02,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 16:01:02,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:01:02,592 INFO L87 Difference]: Start difference. First operand 1333 states and 4526 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:02,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:01:02,751 INFO L93 Difference]: Finished difference Result 1383 states and 4599 transitions. [2021-10-08 16:01:02,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:01:02,751 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 16:01:02,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:01:02,758 INFO L225 Difference]: With dead ends: 1383 [2021-10-08 16:01:02,758 INFO L226 Difference]: Without dead ends: 1355 [2021-10-08 16:01:02,759 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 290.7ms TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:01:02,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1355 states. [2021-10-08 16:01:02,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1355 to 1280. [2021-10-08 16:01:02,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 1202 states have (on average 3.658069883527454) internal successors, (4397), 1279 states have internal predecessors, (4397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:02,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 4397 transitions. [2021-10-08 16:01:02,795 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 4397 transitions. Word has length 15 [2021-10-08 16:01:02,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:01:02,795 INFO L470 AbstractCegarLoop]: Abstraction has 1280 states and 4397 transitions. [2021-10-08 16:01:02,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:02,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 4397 transitions. [2021-10-08 16:01:02,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 16:01:02,797 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:01:02,797 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:01:02,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-08 16:01:03,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:03,012 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:01:03,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:01:03,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1588766569, now seen corresponding path program 2 times [2021-10-08 16:01:03,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:01:03,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419065300] [2021-10-08 16:01:03,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:03,013 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:01:03,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:03,648 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:01:03,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:01:03,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419065300] [2021-10-08 16:01:03,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419065300] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:03,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491834178] [2021-10-08 16:01:03,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:01:03,649 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:03,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:01:03,650 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:01:03,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-08 16:01:03,837 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:01:03,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:01:03,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:01:03,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:01:03,994 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:01:03,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:01:04,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-08 16:01:04,051 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 16:01:04,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491834178] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:01:04,052 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:01:04,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 15 [2021-10-08 16:01:04,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041737266] [2021-10-08 16:01:04,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:01:04,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:01:04,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:01:04,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2021-10-08 16:01:04,055 INFO L87 Difference]: Start difference. First operand 1280 states and 4397 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:04,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:01:04,250 INFO L93 Difference]: Finished difference Result 1320 states and 4400 transitions. [2021-10-08 16:01:04,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 16:01:04,250 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 16:01:04,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:01:04,253 INFO L225 Difference]: With dead ends: 1320 [2021-10-08 16:01:04,253 INFO L226 Difference]: Without dead ends: 1310 [2021-10-08 16:01:04,254 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 360.4ms TimeCoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-10-08 16:01:04,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2021-10-08 16:01:04,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1254. [2021-10-08 16:01:04,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1254 states, 1176 states have (on average 3.6505102040816326) internal successors, (4293), 1253 states have internal predecessors, (4293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:04,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 4293 transitions. [2021-10-08 16:01:04,292 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 4293 transitions. Word has length 15 [2021-10-08 16:01:04,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:01:04,292 INFO L470 AbstractCegarLoop]: Abstraction has 1254 states and 4293 transitions. [2021-10-08 16:01:04,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:04,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 4293 transitions. [2021-10-08 16:01:04,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 16:01:04,293 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:01:04,293 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:01:04,334 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-10-08 16:01:04,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-10-08 16:01:04,507 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:01:04,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:01:04,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1588766709, now seen corresponding path program 4 times [2021-10-08 16:01:04,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:01:04,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287850626] [2021-10-08 16:01:04,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:04,508 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:01:04,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:05,163 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:01:05,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:01:05,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287850626] [2021-10-08 16:01:05,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287850626] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:05,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768441863] [2021-10-08 16:01:05,164 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:01:05,164 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:05,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:01:05,165 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:01:05,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-08 16:01:05,356 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:01:05,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:01:05,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 16:01:05,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:01:05,527 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:01:05,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:01:05,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-08 16:01:05,616 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:01:05,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768441863] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:05,617 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:01:05,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 18 [2021-10-08 16:01:05,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432179529] [2021-10-08 16:01:05,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 16:01:05,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:01:05,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 16:01:05,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2021-10-08 16:01:05,619 INFO L87 Difference]: Start difference. First operand 1254 states and 4293 transitions. Second operand has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:07,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:01:07,643 INFO L93 Difference]: Finished difference Result 1521 states and 4951 transitions. [2021-10-08 16:01:07,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 16:01:07,644 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 16:01:07,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:01:07,651 INFO L225 Difference]: With dead ends: 1521 [2021-10-08 16:01:07,651 INFO L226 Difference]: Without dead ends: 1501 [2021-10-08 16:01:07,652 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1361.5ms TimeCoverageRelationStatistics Valid=172, Invalid=1088, Unknown=0, NotChecked=0, Total=1260 [2021-10-08 16:01:07,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1501 states. [2021-10-08 16:01:07,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1501 to 1226. [2021-10-08 16:01:07,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 1148 states have (on average 3.68205574912892) internal successors, (4227), 1225 states have internal predecessors, (4227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:07,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 4227 transitions. [2021-10-08 16:01:07,752 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 4227 transitions. Word has length 15 [2021-10-08 16:01:07,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:01:07,752 INFO L470 AbstractCegarLoop]: Abstraction has 1226 states and 4227 transitions. [2021-10-08 16:01:07,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:07,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 4227 transitions. [2021-10-08 16:01:07,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 16:01:07,754 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:01:07,754 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:01:07,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-08 16:01:07,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-08 16:01:07,963 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:01:07,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:01:07,965 INFO L82 PathProgramCache]: Analyzing trace with hash -2106314244, now seen corresponding path program 1 times [2021-10-08 16:01:07,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:01:07,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078884388] [2021-10-08 16:01:07,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:07,965 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:01:08,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:08,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:01:08,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:01:08,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078884388] [2021-10-08 16:01:08,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078884388] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:08,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603349335] [2021-10-08 16:01:08,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:08,432 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:08,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:01:08,433 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:01:08,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-08 16:01:08,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:08,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 16:01:08,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:01:08,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2021-10-08 16:01:08,799 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:01:08,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:01:08,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2021-10-08 16:01:08,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:01:08,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603349335] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:01:08,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:01:08,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 15 [2021-10-08 16:01:08,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644766546] [2021-10-08 16:01:08,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 16:01:08,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:01:08,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 16:01:08,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-10-08 16:01:08,999 INFO L87 Difference]: Start difference. First operand 1226 states and 4227 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:09,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:01:09,349 INFO L93 Difference]: Finished difference Result 2477 states and 9138 transitions. [2021-10-08 16:01:09,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 16:01:09,350 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 16:01:09,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:01:09,358 INFO L225 Difference]: With dead ends: 2477 [2021-10-08 16:01:09,358 INFO L226 Difference]: Without dead ends: 2477 [2021-10-08 16:01:09,359 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 349.7ms TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2021-10-08 16:01:09,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2477 states. [2021-10-08 16:01:09,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2477 to 1700. [2021-10-08 16:01:09,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1700 states, 1622 states have (on average 4.247842170160296) internal successors, (6890), 1699 states have internal predecessors, (6890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:09,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1700 states to 1700 states and 6890 transitions. [2021-10-08 16:01:09,430 INFO L78 Accepts]: Start accepts. Automaton has 1700 states and 6890 transitions. Word has length 15 [2021-10-08 16:01:09,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:01:09,430 INFO L470 AbstractCegarLoop]: Abstraction has 1700 states and 6890 transitions. [2021-10-08 16:01:09,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:09,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1700 states and 6890 transitions. [2021-10-08 16:01:09,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 16:01:09,432 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:01:09,432 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:01:09,460 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-10-08 16:01:09,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-08 16:01:09,633 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:01:09,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:01:09,634 INFO L82 PathProgramCache]: Analyzing trace with hash -2106314243, now seen corresponding path program 1 times [2021-10-08 16:01:09,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:01:09,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361136797] [2021-10-08 16:01:09,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:09,636 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:01:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:10,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:01:10,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:01:10,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361136797] [2021-10-08 16:01:10,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361136797] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:10,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857027600] [2021-10-08 16:01:10,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:10,045 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:10,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:01:10,047 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:01:10,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-08 16:01:10,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:10,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-08 16:01:10,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:01:10,527 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:01:10,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:01:10,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-10-08 16:01:10,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:01:10,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857027600] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:10,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:01:10,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2021-10-08 16:01:10,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981640421] [2021-10-08 16:01:10,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 16:01:10,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:01:10,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 16:01:10,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2021-10-08 16:01:10,842 INFO L87 Difference]: Start difference. First operand 1700 states and 6890 transitions. Second operand has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:12,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:01:12,568 INFO L93 Difference]: Finished difference Result 5518 states and 20296 transitions. [2021-10-08 16:01:12,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 16:01:12,569 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 16:01:12,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:01:12,592 INFO L225 Difference]: With dead ends: 5518 [2021-10-08 16:01:12,593 INFO L226 Difference]: Without dead ends: 5518 [2021-10-08 16:01:12,593 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1062.4ms TimeCoverageRelationStatistics Valid=219, Invalid=837, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 16:01:12,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5518 states. [2021-10-08 16:01:12,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5518 to 3164. [2021-10-08 16:01:12,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3164 states, 3076 states have (on average 4.485695708712614) internal successors, (13798), 3163 states have internal predecessors, (13798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:12,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3164 states to 3164 states and 13798 transitions. [2021-10-08 16:01:12,748 INFO L78 Accepts]: Start accepts. Automaton has 3164 states and 13798 transitions. Word has length 15 [2021-10-08 16:01:12,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:01:12,748 INFO L470 AbstractCegarLoop]: Abstraction has 3164 states and 13798 transitions. [2021-10-08 16:01:12,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:12,748 INFO L276 IsEmpty]: Start isEmpty. Operand 3164 states and 13798 transitions. [2021-10-08 16:01:12,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 16:01:12,750 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:01:12,750 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:01:12,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-08 16:01:12,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-08 16:01:12,964 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:01:12,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:01:12,964 INFO L82 PathProgramCache]: Analyzing trace with hash -2106314104, now seen corresponding path program 1 times [2021-10-08 16:01:12,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:01:12,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723750967] [2021-10-08 16:01:12,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:12,965 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:01:13,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:13,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:01:13,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:01:13,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723750967] [2021-10-08 16:01:13,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723750967] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:01:13,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:01:13,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-08 16:01:13,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850319668] [2021-10-08 16:01:13,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 16:01:13,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:01:13,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 16:01:13,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:01:13,184 INFO L87 Difference]: Start difference. First operand 3164 states and 13798 transitions. Second operand has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:13,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:01:13,460 INFO L93 Difference]: Finished difference Result 3420 states and 14605 transitions. [2021-10-08 16:01:13,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 16:01:13,461 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 16:01:13,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:01:13,481 INFO L225 Difference]: With dead ends: 3420 [2021-10-08 16:01:13,481 INFO L226 Difference]: Without dead ends: 3420 [2021-10-08 16:01:13,483 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 114.1ms TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:01:13,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3420 states. [2021-10-08 16:01:13,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3420 to 3320. [2021-10-08 16:01:13,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3320 states, 3232 states have (on average 4.419863861386139) internal successors, (14285), 3319 states have internal predecessors, (14285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:13,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3320 states to 3320 states and 14285 transitions. [2021-10-08 16:01:13,725 INFO L78 Accepts]: Start accepts. Automaton has 3320 states and 14285 transitions. Word has length 15 [2021-10-08 16:01:13,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:01:13,726 INFO L470 AbstractCegarLoop]: Abstraction has 3320 states and 14285 transitions. [2021-10-08 16:01:13,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:13,726 INFO L276 IsEmpty]: Start isEmpty. Operand 3320 states and 14285 transitions. [2021-10-08 16:01:13,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 16:01:13,728 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:01:13,728 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:01:13,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-10-08 16:01:13,729 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:01:13,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:01:13,730 INFO L82 PathProgramCache]: Analyzing trace with hash -2101326514, now seen corresponding path program 2 times [2021-10-08 16:01:13,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:01:13,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338544928] [2021-10-08 16:01:13,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:13,731 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:01:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:13,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:01:13,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:01:13,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338544928] [2021-10-08 16:01:13,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338544928] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:01:13,930 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:01:13,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-08 16:01:13,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275821353] [2021-10-08 16:01:13,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 16:01:13,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:01:13,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 16:01:13,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:01:13,932 INFO L87 Difference]: Start difference. First operand 3320 states and 14285 transitions. Second operand has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:14,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:01:14,263 INFO L93 Difference]: Finished difference Result 3518 states and 14889 transitions. [2021-10-08 16:01:14,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 16:01:14,263 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 16:01:14,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:01:14,289 INFO L225 Difference]: With dead ends: 3518 [2021-10-08 16:01:14,289 INFO L226 Difference]: Without dead ends: 3518 [2021-10-08 16:01:14,291 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 112.0ms TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:01:14,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3518 states. [2021-10-08 16:01:14,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3518 to 3282. [2021-10-08 16:01:14,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3282 states, 3194 states have (on average 4.4214151534126485) internal successors, (14122), 3281 states have internal predecessors, (14122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:14,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3282 states to 3282 states and 14122 transitions. [2021-10-08 16:01:14,422 INFO L78 Accepts]: Start accepts. Automaton has 3282 states and 14122 transitions. Word has length 15 [2021-10-08 16:01:14,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:01:14,423 INFO L470 AbstractCegarLoop]: Abstraction has 3282 states and 14122 transitions. [2021-10-08 16:01:14,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:14,423 INFO L276 IsEmpty]: Start isEmpty. Operand 3282 states and 14122 transitions. [2021-10-08 16:01:14,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 16:01:14,424 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:01:14,424 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:01:14,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-10-08 16:01:14,425 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:01:14,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:01:14,426 INFO L82 PathProgramCache]: Analyzing trace with hash 13118089, now seen corresponding path program 1 times [2021-10-08 16:01:14,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:01:14,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995704571] [2021-10-08 16:01:14,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:14,426 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:01:14,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:14,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:01:14,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:01:14,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995704571] [2021-10-08 16:01:14,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995704571] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:14,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631843017] [2021-10-08 16:01:14,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:14,679 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:14,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:01:14,680 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:01:14,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-08 16:01:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:14,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-08 16:01:14,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:01:14,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:01:14,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:01:14,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:01:14,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:01:15,075 INFO L354 Elim1Store]: treesize reduction 330, result has 13.2 percent of original size [2021-10-08 16:01:15,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 92 [2021-10-08 16:01:15,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-08 16:01:16,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:01:16,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:01:16,525 INFO L354 Elim1Store]: treesize reduction 128, result has 36.3 percent of original size [2021-10-08 16:01:16,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 25 case distinctions, treesize of input 68 treesize of output 124 [2021-10-08 16:01:16,723 INFO L354 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2021-10-08 16:01:16,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 50 [2021-10-08 16:01:16,834 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:01:16,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-10-08 16:01:16,964 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:01:16,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-10-08 16:01:17,131 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:01:17,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2021-10-08 16:01:17,200 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-08 16:01:17,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 21 [2021-10-08 16:01:17,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:01:17,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631843017] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:17,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:01:17,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 16 [2021-10-08 16:01:17,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526883880] [2021-10-08 16:01:17,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 16:01:17,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:01:17,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 16:01:17,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2021-10-08 16:01:17,233 INFO L87 Difference]: Start difference. First operand 3282 states and 14122 transitions. Second operand has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:19,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:01:19,542 INFO L93 Difference]: Finished difference Result 4102 states and 15952 transitions. [2021-10-08 16:01:19,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 16:01:19,542 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 16:01:19,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:01:19,556 INFO L225 Difference]: With dead ends: 4102 [2021-10-08 16:01:19,556 INFO L226 Difference]: Without dead ends: 4092 [2021-10-08 16:01:19,556 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1579.9ms TimeCoverageRelationStatistics Valid=163, Invalid=767, Unknown=0, NotChecked=0, Total=930 [2021-10-08 16:01:19,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4092 states. [2021-10-08 16:01:19,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4092 to 2750. [2021-10-08 16:01:19,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2750 states, 2662 states have (on average 4.291134485349361) internal successors, (11423), 2749 states have internal predecessors, (11423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:19,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2750 states to 2750 states and 11423 transitions. [2021-10-08 16:01:19,668 INFO L78 Accepts]: Start accepts. Automaton has 2750 states and 11423 transitions. Word has length 15 [2021-10-08 16:01:19,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:01:19,669 INFO L470 AbstractCegarLoop]: Abstraction has 2750 states and 11423 transitions. [2021-10-08 16:01:19,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:19,669 INFO L276 IsEmpty]: Start isEmpty. Operand 2750 states and 11423 transitions. [2021-10-08 16:01:19,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 16:01:19,672 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:01:19,672 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:01:19,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-08 16:01:19,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:19,887 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:01:19,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:01:19,888 INFO L82 PathProgramCache]: Analyzing trace with hash 13118229, now seen corresponding path program 1 times [2021-10-08 16:01:19,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:01:19,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213316326] [2021-10-08 16:01:19,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:19,889 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:01:19,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:20,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:01:20,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:01:20,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213316326] [2021-10-08 16:01:20,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213316326] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:20,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175646310] [2021-10-08 16:01:20,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:20,295 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:20,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:01:20,297 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:01:20,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-08 16:01:20,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:20,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-08 16:01:20,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:01:20,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 678 treesize of output 646 [2021-10-08 16:01:20,876 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:01:20,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:01:20,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-10-08 16:01:20,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:01:20,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175646310] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:20,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:01:20,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-08 16:01:20,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540510543] [2021-10-08 16:01:20,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 16:01:20,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:01:20,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 16:01:20,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:01:20,938 INFO L87 Difference]: Start difference. First operand 2750 states and 11423 transitions. Second operand has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:22,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:01:22,196 INFO L93 Difference]: Finished difference Result 4969 states and 17909 transitions. [2021-10-08 16:01:22,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 16:01:22,197 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 16:01:22,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:01:22,212 INFO L225 Difference]: With dead ends: 4969 [2021-10-08 16:01:22,213 INFO L226 Difference]: Without dead ends: 4950 [2021-10-08 16:01:22,213 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 844.2ms TimeCoverageRelationStatistics Valid=148, Invalid=608, Unknown=0, NotChecked=0, Total=756 [2021-10-08 16:01:22,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4950 states. [2021-10-08 16:01:22,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4950 to 2876. [2021-10-08 16:01:22,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2876 states, 2788 states have (on average 4.366571018651363) internal successors, (12174), 2875 states have internal predecessors, (12174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:22,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2876 states to 2876 states and 12174 transitions. [2021-10-08 16:01:22,351 INFO L78 Accepts]: Start accepts. Automaton has 2876 states and 12174 transitions. Word has length 15 [2021-10-08 16:01:22,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:01:22,352 INFO L470 AbstractCegarLoop]: Abstraction has 2876 states and 12174 transitions. [2021-10-08 16:01:22,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:22,352 INFO L276 IsEmpty]: Start isEmpty. Operand 2876 states and 12174 transitions. [2021-10-08 16:01:22,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 16:01:22,354 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:01:22,354 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:01:22,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-08 16:01:22,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-10-08 16:01:22,569 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:01:22,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:01:22,570 INFO L82 PathProgramCache]: Analyzing trace with hash 160583679, now seen corresponding path program 2 times [2021-10-08 16:01:22,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:01:22,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476407936] [2021-10-08 16:01:22,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:22,571 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:01:22,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:22,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:01:22,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:01:22,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476407936] [2021-10-08 16:01:22,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476407936] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:22,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893352804] [2021-10-08 16:01:22,856 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:01:22,856 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:22,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:01:22,857 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:01:22,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-08 16:01:23,152 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:01:23,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:01:23,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 16:01:23,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:01:23,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2021-10-08 16:01:23,320 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:01:23,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:01:23,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-08 16:01:23,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:01:23,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893352804] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:01:23,406 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:01:23,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 16 [2021-10-08 16:01:23,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973389695] [2021-10-08 16:01:23,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 16:01:23,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:01:23,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 16:01:23,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2021-10-08 16:01:23,409 INFO L87 Difference]: Start difference. First operand 2876 states and 12174 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:23,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:01:23,625 INFO L93 Difference]: Finished difference Result 3102 states and 12646 transitions. [2021-10-08 16:01:23,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 16:01:23,626 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 16:01:23,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:01:23,635 INFO L225 Difference]: With dead ends: 3102 [2021-10-08 16:01:23,635 INFO L226 Difference]: Without dead ends: 3072 [2021-10-08 16:01:23,635 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 260.2ms TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-10-08 16:01:23,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3072 states. [2021-10-08 16:01:23,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3072 to 2938. [2021-10-08 16:01:23,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2938 states, 2850 states have (on average 4.320350877192983) internal successors, (12313), 2937 states have internal predecessors, (12313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:23,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2938 states to 2938 states and 12313 transitions. [2021-10-08 16:01:23,722 INFO L78 Accepts]: Start accepts. Automaton has 2938 states and 12313 transitions. Word has length 15 [2021-10-08 16:01:23,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:01:23,722 INFO L470 AbstractCegarLoop]: Abstraction has 2938 states and 12313 transitions. [2021-10-08 16:01:23,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:23,722 INFO L276 IsEmpty]: Start isEmpty. Operand 2938 states and 12313 transitions. [2021-10-08 16:01:23,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 16:01:23,724 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:01:23,724 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:01:23,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-08 16:01:23,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-10-08 16:01:23,938 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:01:23,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:01:23,938 INFO L82 PathProgramCache]: Analyzing trace with hash 905662459, now seen corresponding path program 3 times [2021-10-08 16:01:23,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:01:23,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534592169] [2021-10-08 16:01:23,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:23,939 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:01:23,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:24,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:01:24,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:01:24,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534592169] [2021-10-08 16:01:24,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534592169] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:24,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499844707] [2021-10-08 16:01:24,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:01:24,275 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:24,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:01:24,276 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:01:24,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-08 16:01:24,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-08 16:01:24,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:01:24,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 16:01:24,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:01:24,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 83 [2021-10-08 16:01:24,755 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:01:24,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:01:24,822 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:01:24,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:01:24,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-08 16:01:24,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:01:24,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499844707] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:01:24,871 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:01:24,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 17 [2021-10-08 16:01:24,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423882415] [2021-10-08 16:01:24,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 16:01:24,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:01:24,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 16:01:24,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-10-08 16:01:24,874 INFO L87 Difference]: Start difference. First operand 2938 states and 12313 transitions. Second operand has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:25,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:01:25,178 INFO L93 Difference]: Finished difference Result 3155 states and 12772 transitions. [2021-10-08 16:01:25,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 16:01:25,179 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 16:01:25,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:01:25,188 INFO L225 Difference]: With dead ends: 3155 [2021-10-08 16:01:25,188 INFO L226 Difference]: Without dead ends: 3124 [2021-10-08 16:01:25,189 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 300.3ms TimeCoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2021-10-08 16:01:25,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3124 states. [2021-10-08 16:01:25,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3124 to 2929. [2021-10-08 16:01:25,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2929 states, 2841 states have (on average 4.329109468497008) internal successors, (12299), 2928 states have internal predecessors, (12299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:25,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2929 states to 2929 states and 12299 transitions. [2021-10-08 16:01:25,260 INFO L78 Accepts]: Start accepts. Automaton has 2929 states and 12299 transitions. Word has length 15 [2021-10-08 16:01:25,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:01:25,260 INFO L470 AbstractCegarLoop]: Abstraction has 2929 states and 12299 transitions. [2021-10-08 16:01:25,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:25,261 INFO L276 IsEmpty]: Start isEmpty. Operand 2929 states and 12299 transitions. [2021-10-08 16:01:25,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 16:01:25,262 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:01:25,262 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:01:25,289 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-10-08 16:01:25,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:25,468 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:01:25,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:01:25,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1116125001, now seen corresponding path program 2 times [2021-10-08 16:01:25,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:01:25,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726450718] [2021-10-08 16:01:25,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:25,469 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:01:25,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:25,824 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:01:25,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:01:25,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726450718] [2021-10-08 16:01:25,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726450718] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:25,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626456825] [2021-10-08 16:01:25,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:01:25,825 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:25,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:01:25,826 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:01:25,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-08 16:01:26,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:01:26,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:01:26,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 16:01:26,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:01:26,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2021-10-08 16:01:26,426 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 16:01:26,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626456825] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:01:26,426 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:01:26,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 13 [2021-10-08 16:01:26,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885941648] [2021-10-08 16:01:26,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 16:01:26,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:01:26,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 16:01:26,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:01:26,429 INFO L87 Difference]: Start difference. First operand 2929 states and 12299 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:26,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:01:26,667 INFO L93 Difference]: Finished difference Result 4180 states and 16328 transitions. [2021-10-08 16:01:26,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 16:01:26,668 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 16:01:26,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:01:26,686 INFO L225 Difference]: With dead ends: 4180 [2021-10-08 16:01:26,687 INFO L226 Difference]: Without dead ends: 4180 [2021-10-08 16:01:26,687 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 183.1ms TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:01:26,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4180 states. [2021-10-08 16:01:26,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4180 to 3079. [2021-10-08 16:01:26,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3079 states, 2991 states have (on average 4.283517218321632) internal successors, (12812), 3078 states have internal predecessors, (12812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:26,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3079 states to 3079 states and 12812 transitions. [2021-10-08 16:01:26,798 INFO L78 Accepts]: Start accepts. Automaton has 3079 states and 12812 transitions. Word has length 16 [2021-10-08 16:01:26,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:01:26,799 INFO L470 AbstractCegarLoop]: Abstraction has 3079 states and 12812 transitions. [2021-10-08 16:01:26,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:26,800 INFO L276 IsEmpty]: Start isEmpty. Operand 3079 states and 12812 transitions. [2021-10-08 16:01:26,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 16:01:26,801 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:01:26,801 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:01:26,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-08 16:01:27,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-10-08 16:01:27,012 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:01:27,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:01:27,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1116125140, now seen corresponding path program 3 times [2021-10-08 16:01:27,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:01:27,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601434625] [2021-10-08 16:01:27,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:27,013 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:01:27,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:27,618 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:01:27,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:01:27,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601434625] [2021-10-08 16:01:27,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601434625] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:27,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925969982] [2021-10-08 16:01:27,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:01:27,619 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:27,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:01:27,620 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:01:27,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-08 16:01:27,981 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-08 16:01:27,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:01:27,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 16:01:27,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:01:28,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2021-10-08 16:01:28,300 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 16:01:28,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925969982] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:01:28,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:01:28,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 15 [2021-10-08 16:01:28,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131437581] [2021-10-08 16:01:28,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 16:01:28,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:01:28,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 16:01:28,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:01:28,303 INFO L87 Difference]: Start difference. First operand 3079 states and 12812 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:28,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:01:28,523 INFO L93 Difference]: Finished difference Result 3304 states and 13238 transitions. [2021-10-08 16:01:28,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 16:01:28,524 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 16:01:28,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:01:28,538 INFO L225 Difference]: With dead ends: 3304 [2021-10-08 16:01:28,538 INFO L226 Difference]: Without dead ends: 3304 [2021-10-08 16:01:28,538 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 311.7ms TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2021-10-08 16:01:28,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3304 states. [2021-10-08 16:01:28,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3304 to 2896. [2021-10-08 16:01:28,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2896 states, 2808 states have (on average 4.310897435897436) internal successors, (12105), 2895 states have internal predecessors, (12105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:28,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2896 states to 2896 states and 12105 transitions. [2021-10-08 16:01:28,624 INFO L78 Accepts]: Start accepts. Automaton has 2896 states and 12105 transitions. Word has length 16 [2021-10-08 16:01:28,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:01:28,625 INFO L470 AbstractCegarLoop]: Abstraction has 2896 states and 12105 transitions. [2021-10-08 16:01:28,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:28,626 INFO L276 IsEmpty]: Start isEmpty. Operand 2896 states and 12105 transitions. [2021-10-08 16:01:28,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 16:01:28,628 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:01:28,628 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:01:28,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-08 16:01:28,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:28,842 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:01:28,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:01:28,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1114753653, now seen corresponding path program 2 times [2021-10-08 16:01:28,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:01:28,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428128556] [2021-10-08 16:01:28,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:28,843 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:01:28,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:29,555 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:01:29,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:01:29,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428128556] [2021-10-08 16:01:29,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428128556] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:29,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214218165] [2021-10-08 16:01:29,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:01:29,556 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:29,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:01:29,558 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:01:29,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-08 16:01:29,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:01:29,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:01:29,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 16:01:29,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:01:29,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 954 treesize of output 938 [2021-10-08 16:01:30,106 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:01:30,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:01:30,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-08 16:01:30,148 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 16:01:30,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214218165] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:01:30,149 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:01:30,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 16 [2021-10-08 16:01:30,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273064826] [2021-10-08 16:01:30,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:01:30,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:01:30,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:01:30,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-10-08 16:01:30,152 INFO L87 Difference]: Start difference. First operand 2896 states and 12105 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:30,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:01:30,356 INFO L93 Difference]: Finished difference Result 3081 states and 12528 transitions. [2021-10-08 16:01:30,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 16:01:30,356 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 16:01:30,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:01:30,366 INFO L225 Difference]: With dead ends: 3081 [2021-10-08 16:01:30,366 INFO L226 Difference]: Without dead ends: 3081 [2021-10-08 16:01:30,366 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 373.1ms TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2021-10-08 16:01:30,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3081 states. [2021-10-08 16:01:30,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3081 to 2932. [2021-10-08 16:01:30,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2932 states, 2844 states have (on average 4.293952180028129) internal successors, (12212), 2931 states have internal predecessors, (12212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:30,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2932 states to 2932 states and 12212 transitions. [2021-10-08 16:01:30,428 INFO L78 Accepts]: Start accepts. Automaton has 2932 states and 12212 transitions. Word has length 16 [2021-10-08 16:01:30,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:01:30,428 INFO L470 AbstractCegarLoop]: Abstraction has 2932 states and 12212 transitions. [2021-10-08 16:01:30,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:30,429 INFO L276 IsEmpty]: Start isEmpty. Operand 2932 states and 12212 transitions. [2021-10-08 16:01:30,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 16:01:30,430 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:01:30,430 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:01:30,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-10-08 16:01:30,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-10-08 16:01:30,631 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:01:30,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:01:30,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1114753654, now seen corresponding path program 1 times [2021-10-08 16:01:30,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:01:30,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726632061] [2021-10-08 16:01:30,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:30,633 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:01:30,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:31,060 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:01:31,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:01:31,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726632061] [2021-10-08 16:01:31,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726632061] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:31,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575874960] [2021-10-08 16:01:31,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:31,061 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:31,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:01:31,062 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:01:31,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-08 16:01:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:31,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 16:01:31,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:01:31,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 133 [2021-10-08 16:01:31,588 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:01:31,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:01:31,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-08 16:01:31,629 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:01:31,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575874960] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:31,630 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:01:31,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 15 [2021-10-08 16:01:31,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195897421] [2021-10-08 16:01:31,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-08 16:01:31,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:01:31,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-08 16:01:31,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-10-08 16:01:31,631 INFO L87 Difference]: Start difference. First operand 2932 states and 12212 transitions. Second operand has 17 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:32,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:01:32,794 INFO L93 Difference]: Finished difference Result 7556 states and 29680 transitions. [2021-10-08 16:01:32,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 16:01:32,794 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 16:01:32,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:01:32,821 INFO L225 Difference]: With dead ends: 7556 [2021-10-08 16:01:32,821 INFO L226 Difference]: Without dead ends: 7496 [2021-10-08 16:01:32,821 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 773.7ms TimeCoverageRelationStatistics Valid=168, Invalid=762, Unknown=0, NotChecked=0, Total=930 [2021-10-08 16:01:32,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7496 states. [2021-10-08 16:01:32,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7496 to 3909. [2021-10-08 16:01:32,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3909 states, 3821 states have (on average 4.660560062810783) internal successors, (17808), 3908 states have internal predecessors, (17808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:32,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3909 states to 3909 states and 17808 transitions. [2021-10-08 16:01:32,985 INFO L78 Accepts]: Start accepts. Automaton has 3909 states and 17808 transitions. Word has length 16 [2021-10-08 16:01:32,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:01:32,985 INFO L470 AbstractCegarLoop]: Abstraction has 3909 states and 17808 transitions. [2021-10-08 16:01:32,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:32,986 INFO L276 IsEmpty]: Start isEmpty. Operand 3909 states and 17808 transitions. [2021-10-08 16:01:32,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 16:01:32,988 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:01:32,988 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:01:33,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-08 16:01:33,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-10-08 16:01:33,202 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:01:33,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:01:33,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1114753793, now seen corresponding path program 4 times [2021-10-08 16:01:33,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:01:33,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241065256] [2021-10-08 16:01:33,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:33,203 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:01:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:33,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:01:33,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:01:33,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241065256] [2021-10-08 16:01:33,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241065256] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:33,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916652166] [2021-10-08 16:01:33,768 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:01:33,768 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:33,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:01:33,769 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:01:33,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-08 16:01:34,113 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:01:34,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:01:34,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 16:01:34,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:01:34,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2021-10-08 16:01:34,313 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:01:34,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:01:34,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-08 16:01:34,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:01:34,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916652166] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:34,365 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:01:34,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 17 [2021-10-08 16:01:34,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555166895] [2021-10-08 16:01:34,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 16:01:34,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:01:34,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 16:01:34,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2021-10-08 16:01:34,366 INFO L87 Difference]: Start difference. First operand 3909 states and 17808 transitions. Second operand has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:35,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:01:35,438 INFO L93 Difference]: Finished difference Result 6669 states and 27064 transitions. [2021-10-08 16:01:35,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-08 16:01:35,439 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 16:01:35,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:01:35,466 INFO L225 Difference]: With dead ends: 6669 [2021-10-08 16:01:35,466 INFO L226 Difference]: Without dead ends: 6631 [2021-10-08 16:01:35,467 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 841.0ms TimeCoverageRelationStatistics Valid=149, Invalid=721, Unknown=0, NotChecked=0, Total=870 [2021-10-08 16:01:35,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6631 states. [2021-10-08 16:01:35,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6631 to 3909. [2021-10-08 16:01:35,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3909 states, 3821 states have (on average 4.660036639623136) internal successors, (17806), 3908 states have internal predecessors, (17806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:35,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3909 states to 3909 states and 17806 transitions. [2021-10-08 16:01:35,609 INFO L78 Accepts]: Start accepts. Automaton has 3909 states and 17806 transitions. Word has length 16 [2021-10-08 16:01:35,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:01:35,609 INFO L470 AbstractCegarLoop]: Abstraction has 3909 states and 17806 transitions. [2021-10-08 16:01:35,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:35,609 INFO L276 IsEmpty]: Start isEmpty. Operand 3909 states and 17806 transitions. [2021-10-08 16:01:35,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 16:01:35,611 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:01:35,611 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:01:35,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2021-10-08 16:01:35,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-10-08 16:01:35,812 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:01:35,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:01:35,813 INFO L82 PathProgramCache]: Analyzing trace with hash 2007297884, now seen corresponding path program 2 times [2021-10-08 16:01:35,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:01:35,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283437094] [2021-10-08 16:01:35,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:35,814 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:01:35,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:36,216 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:01:36,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:01:36,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283437094] [2021-10-08 16:01:36,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283437094] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:36,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280809489] [2021-10-08 16:01:36,217 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:01:36,217 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:36,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:01:36,218 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:01:36,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-08 16:01:36,558 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:01:36,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:01:36,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 16:01:36,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:01:36,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2021-10-08 16:01:36,755 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:01:36,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:01:36,808 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:01:36,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:01:36,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-08 16:01:36,846 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 16:01:36,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280809489] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:01:36,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:01:36,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 16 [2021-10-08 16:01:36,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497864467] [2021-10-08 16:01:36,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 16:01:36,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:01:36,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 16:01:36,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2021-10-08 16:01:36,848 INFO L87 Difference]: Start difference. First operand 3909 states and 17806 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:37,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:01:37,076 INFO L93 Difference]: Finished difference Result 3977 states and 17928 transitions. [2021-10-08 16:01:37,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 16:01:37,077 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 16:01:37,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:01:37,100 INFO L225 Difference]: With dead ends: 3977 [2021-10-08 16:01:37,101 INFO L226 Difference]: Without dead ends: 3946 [2021-10-08 16:01:37,101 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 274.7ms TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2021-10-08 16:01:37,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3946 states. [2021-10-08 16:01:37,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3946 to 3847. [2021-10-08 16:01:37,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3847 states, 3759 states have (on average 4.699122106943336) internal successors, (17664), 3846 states have internal predecessors, (17664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:37,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3847 states to 3847 states and 17664 transitions. [2021-10-08 16:01:37,249 INFO L78 Accepts]: Start accepts. Automaton has 3847 states and 17664 transitions. Word has length 16 [2021-10-08 16:01:37,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:01:37,250 INFO L470 AbstractCegarLoop]: Abstraction has 3847 states and 17664 transitions. [2021-10-08 16:01:37,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:37,250 INFO L276 IsEmpty]: Start isEmpty. Operand 3847 states and 17664 transitions. [2021-10-08 16:01:37,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 16:01:37,253 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:01:37,253 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:01:37,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-10-08 16:01:37,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:37,463 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:01:37,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:01:37,463 INFO L82 PathProgramCache]: Analyzing trace with hash -871980183, now seen corresponding path program 1 times [2021-10-08 16:01:37,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:01:37,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706716084] [2021-10-08 16:01:37,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:37,464 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:01:37,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:37,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:01:37,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:01:37,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706716084] [2021-10-08 16:01:37,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706716084] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:01:37,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:01:37,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-08 16:01:37,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277774282] [2021-10-08 16:01:37,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 16:01:37,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:01:37,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 16:01:37,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:01:37,653 INFO L87 Difference]: Start difference. First operand 3847 states and 17664 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:37,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:01:37,941 INFO L93 Difference]: Finished difference Result 4789 states and 21033 transitions. [2021-10-08 16:01:37,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 16:01:37,942 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 16:01:37,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:01:38,058 INFO L225 Difference]: With dead ends: 4789 [2021-10-08 16:01:38,058 INFO L226 Difference]: Without dead ends: 4789 [2021-10-08 16:01:38,058 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 101.9ms TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-08 16:01:38,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4789 states. [2021-10-08 16:01:38,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4789 to 4084. [2021-10-08 16:01:38,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4084 states, 3996 states have (on average 4.647397397397397) internal successors, (18571), 4083 states have internal predecessors, (18571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:38,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4084 states to 4084 states and 18571 transitions. [2021-10-08 16:01:38,205 INFO L78 Accepts]: Start accepts. Automaton has 4084 states and 18571 transitions. Word has length 16 [2021-10-08 16:01:38,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:01:38,206 INFO L470 AbstractCegarLoop]: Abstraction has 4084 states and 18571 transitions. [2021-10-08 16:01:38,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:38,206 INFO L276 IsEmpty]: Start isEmpty. Operand 4084 states and 18571 transitions. [2021-10-08 16:01:38,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 16:01:38,209 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:01:38,209 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:01:38,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-10-08 16:01:38,210 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:01:38,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:01:38,211 INFO L82 PathProgramCache]: Analyzing trace with hash -871980044, now seen corresponding path program 1 times [2021-10-08 16:01:38,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:01:38,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210633680] [2021-10-08 16:01:38,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:38,212 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:01:38,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:38,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:01:38,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:01:38,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210633680] [2021-10-08 16:01:38,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210633680] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:38,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144501330] [2021-10-08 16:01:38,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:38,916 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:38,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:01:38,918 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:01:38,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-10-08 16:01:39,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:39,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-08 16:01:39,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:01:39,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:01:39,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 45 [2021-10-08 16:01:39,489 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:01:39,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:01:39,611 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:01:39,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:01:39,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2021-10-08 16:01:39,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:01:39,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144501330] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:01:39,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:01:39,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 19 [2021-10-08 16:01:39,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300571124] [2021-10-08 16:01:39,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 16:01:39,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:01:39,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 16:01:39,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2021-10-08 16:01:39,831 INFO L87 Difference]: Start difference. First operand 4084 states and 18571 transitions. Second operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:40,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:01:40,347 INFO L93 Difference]: Finished difference Result 4711 states and 20559 transitions. [2021-10-08 16:01:40,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:01:40,348 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 16:01:40,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:01:40,363 INFO L225 Difference]: With dead ends: 4711 [2021-10-08 16:01:40,363 INFO L226 Difference]: Without dead ends: 4711 [2021-10-08 16:01:40,363 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 606.5ms TimeCoverageRelationStatistics Valid=92, Invalid=610, Unknown=0, NotChecked=0, Total=702 [2021-10-08 16:01:40,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4711 states. [2021-10-08 16:01:40,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4711 to 4152. [2021-10-08 16:01:40,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4152 states, 4064 states have (on average 4.6296751968503935) internal successors, (18815), 4151 states have internal predecessors, (18815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:40,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4152 states to 4152 states and 18815 transitions. [2021-10-08 16:01:40,466 INFO L78 Accepts]: Start accepts. Automaton has 4152 states and 18815 transitions. Word has length 16 [2021-10-08 16:01:40,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:01:40,466 INFO L470 AbstractCegarLoop]: Abstraction has 4152 states and 18815 transitions. [2021-10-08 16:01:40,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:40,467 INFO L276 IsEmpty]: Start isEmpty. Operand 4152 states and 18815 transitions. [2021-10-08 16:01:40,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 16:01:40,469 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:01:40,470 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:01:40,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-10-08 16:01:40,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-10-08 16:01:40,685 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:01:40,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:01:40,685 INFO L82 PathProgramCache]: Analyzing trace with hash -871034420, now seen corresponding path program 1 times [2021-10-08 16:01:40,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:01:40,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835919111] [2021-10-08 16:01:40,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:40,686 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:01:40,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:40,820 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:01:40,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:01:40,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835919111] [2021-10-08 16:01:40,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835919111] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:40,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976494440] [2021-10-08 16:01:40,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:40,821 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:40,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:01:40,826 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:01:40,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-10-08 16:01:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:41,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 16:01:41,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:01:41,608 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:01:41,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976494440] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:41,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:01:41,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2021-10-08 16:01:41,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634807370] [2021-10-08 16:01:41,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 16:01:41,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:01:41,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 16:01:41,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:01:41,610 INFO L87 Difference]: Start difference. First operand 4152 states and 18815 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:42,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:01:42,574 INFO L93 Difference]: Finished difference Result 5980 states and 24735 transitions. [2021-10-08 16:01:42,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 16:01:42,575 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 16:01:42,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:01:42,597 INFO L225 Difference]: With dead ends: 5980 [2021-10-08 16:01:42,598 INFO L226 Difference]: Without dead ends: 5864 [2021-10-08 16:01:42,598 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 682.2ms TimeCoverageRelationStatistics Valid=180, Invalid=576, Unknown=0, NotChecked=0, Total=756 [2021-10-08 16:01:42,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5864 states. [2021-10-08 16:01:42,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5864 to 4351. [2021-10-08 16:01:42,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4351 states, 4259 states have (on average 4.635360413242545) internal successors, (19742), 4350 states have internal predecessors, (19742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:42,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4351 states to 4351 states and 19742 transitions. [2021-10-08 16:01:42,717 INFO L78 Accepts]: Start accepts. Automaton has 4351 states and 19742 transitions. Word has length 16 [2021-10-08 16:01:42,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:01:42,718 INFO L470 AbstractCegarLoop]: Abstraction has 4351 states and 19742 transitions. [2021-10-08 16:01:42,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:42,718 INFO L276 IsEmpty]: Start isEmpty. Operand 4351 states and 19742 transitions. [2021-10-08 16:01:42,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 16:01:42,720 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:01:42,720 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:01:42,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-10-08 16:01:42,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:42,934 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:01:42,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:01:42,935 INFO L82 PathProgramCache]: Analyzing trace with hash -740976524, now seen corresponding path program 2 times [2021-10-08 16:01:42,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:01:42,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988587307] [2021-10-08 16:01:42,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:42,936 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:01:42,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:43,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:01:43,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:01:43,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988587307] [2021-10-08 16:01:43,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988587307] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:01:43,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:01:43,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 16:01:43,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773424003] [2021-10-08 16:01:43,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 16:01:43,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:01:43,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 16:01:43,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:01:43,143 INFO L87 Difference]: Start difference. First operand 4351 states and 19742 transitions. Second operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:43,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:01:43,516 INFO L93 Difference]: Finished difference Result 4390 states and 19699 transitions. [2021-10-08 16:01:43,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:01:43,517 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 16:01:43,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:01:43,533 INFO L225 Difference]: With dead ends: 4390 [2021-10-08 16:01:43,534 INFO L226 Difference]: Without dead ends: 4381 [2021-10-08 16:01:43,534 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 173.4ms TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-10-08 16:01:43,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4381 states. [2021-10-08 16:01:43,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4381 to 4148. [2021-10-08 16:01:43,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4148 states, 4056 states have (on average 4.675542406311637) internal successors, (18964), 4147 states have internal predecessors, (18964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:43,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4148 states to 4148 states and 18964 transitions. [2021-10-08 16:01:43,665 INFO L78 Accepts]: Start accepts. Automaton has 4148 states and 18964 transitions. Word has length 16 [2021-10-08 16:01:43,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:01:43,665 INFO L470 AbstractCegarLoop]: Abstraction has 4148 states and 18964 transitions. [2021-10-08 16:01:43,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:43,665 INFO L276 IsEmpty]: Start isEmpty. Operand 4148 states and 18964 transitions. [2021-10-08 16:01:43,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 16:01:43,668 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:01:43,668 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:01:43,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-10-08 16:01:43,669 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:01:43,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:01:43,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1080070444, now seen corresponding path program 1 times [2021-10-08 16:01:43,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:01:43,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268155244] [2021-10-08 16:01:43,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:43,670 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:01:43,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:43,912 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 16:01:43,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:01:43,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268155244] [2021-10-08 16:01:43,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268155244] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:43,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420869102] [2021-10-08 16:01:43,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:43,913 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:43,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:01:43,915 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:01:43,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-10-08 16:01:44,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:44,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-08 16:01:44,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:01:44,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1458 treesize of output 1394 [2021-10-08 16:01:44,703 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:01:44,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:01:45,093 INFO L354 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2021-10-08 16:01:45,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 29 [2021-10-08 16:01:45,110 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:01:45,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420869102] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:45,110 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:01:45,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 19 [2021-10-08 16:01:45,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176448619] [2021-10-08 16:01:45,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 16:01:45,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:01:45,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 16:01:45,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2021-10-08 16:01:45,113 INFO L87 Difference]: Start difference. First operand 4148 states and 18964 transitions. Second operand has 21 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:47,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:01:47,651 INFO L93 Difference]: Finished difference Result 8124 states and 34578 transitions. [2021-10-08 16:01:47,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-08 16:01:47,651 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 16:01:47,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:01:47,686 INFO L225 Difference]: With dead ends: 8124 [2021-10-08 16:01:47,686 INFO L226 Difference]: Without dead ends: 8124 [2021-10-08 16:01:47,688 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 685 ImplicationChecksByTransitivity, 1438.4ms TimeCoverageRelationStatistics Valid=351, Invalid=2099, Unknown=0, NotChecked=0, Total=2450 [2021-10-08 16:01:47,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8124 states. [2021-10-08 16:01:47,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8124 to 4812. [2021-10-08 16:01:47,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4812 states, 4720 states have (on average 4.711652542372882) internal successors, (22239), 4811 states have internal predecessors, (22239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:47,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4812 states to 4812 states and 22239 transitions. [2021-10-08 16:01:47,934 INFO L78 Accepts]: Start accepts. Automaton has 4812 states and 22239 transitions. Word has length 17 [2021-10-08 16:01:47,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:01:47,934 INFO L470 AbstractCegarLoop]: Abstraction has 4812 states and 22239 transitions. [2021-10-08 16:01:47,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:47,934 INFO L276 IsEmpty]: Start isEmpty. Operand 4812 states and 22239 transitions. [2021-10-08 16:01:47,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 16:01:47,936 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:01:47,936 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:01:47,963 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2021-10-08 16:01:48,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:48,138 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:01:48,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:01:48,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1080070304, now seen corresponding path program 2 times [2021-10-08 16:01:48,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:01:48,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144981208] [2021-10-08 16:01:48,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:48,140 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:01:48,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:48,396 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 16:01:48,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:01:48,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144981208] [2021-10-08 16:01:48,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144981208] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:48,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692480083] [2021-10-08 16:01:48,397 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:01:48,398 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:48,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:01:48,400 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:01:48,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-10-08 16:01:48,861 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:01:48,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:01:48,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-08 16:01:48,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:01:48,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:01:48,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:01:49,033 INFO L354 Elim1Store]: treesize reduction 330, result has 13.2 percent of original size [2021-10-08 16:01:49,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 55 [2021-10-08 16:01:49,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-08 16:01:49,902 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-10-08 16:01:49,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 47 [2021-10-08 16:01:50,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:01:50,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:01:50,571 INFO L354 Elim1Store]: treesize reduction 136, result has 34.9 percent of original size [2021-10-08 16:01:50,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 26 case distinctions, treesize of input 60 treesize of output 116 [2021-10-08 16:01:50,866 INFO L354 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2021-10-08 16:01:50,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 53 [2021-10-08 16:01:51,009 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:01:51,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 42 [2021-10-08 16:01:51,307 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:01:51,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 42 [2021-10-08 16:01:51,857 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-08 16:01:51,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 38 [2021-10-08 16:01:51,899 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:01:51,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692480083] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:51,900 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:01:51,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 22 [2021-10-08 16:01:51,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424016371] [2021-10-08 16:01:51,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-08 16:01:51,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:01:51,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-08 16:01:51,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2021-10-08 16:01:51,903 INFO L87 Difference]: Start difference. First operand 4812 states and 22239 transitions. Second operand has 24 states, 23 states have (on average 1.434782608695652) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:54,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:01:54,988 INFO L93 Difference]: Finished difference Result 5243 states and 23352 transitions. [2021-10-08 16:01:54,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-08 16:01:54,989 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.434782608695652) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 16:01:54,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:01:55,009 INFO L225 Difference]: With dead ends: 5243 [2021-10-08 16:01:55,010 INFO L226 Difference]: Without dead ends: 5243 [2021-10-08 16:01:55,011 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 2107.6ms TimeCoverageRelationStatistics Valid=351, Invalid=2301, Unknown=0, NotChecked=0, Total=2652 [2021-10-08 16:01:55,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5243 states. [2021-10-08 16:01:55,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5243 to 4914. [2021-10-08 16:01:55,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4914 states, 4822 states have (on average 4.675860638739112) internal successors, (22547), 4913 states have internal predecessors, (22547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:55,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4914 states to 4914 states and 22547 transitions. [2021-10-08 16:01:55,152 INFO L78 Accepts]: Start accepts. Automaton has 4914 states and 22547 transitions. Word has length 17 [2021-10-08 16:01:55,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:01:55,153 INFO L470 AbstractCegarLoop]: Abstraction has 4914 states and 22547 transitions. [2021-10-08 16:01:55,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.434782608695652) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:55,153 INFO L276 IsEmpty]: Start isEmpty. Operand 4914 states and 22547 transitions. [2021-10-08 16:01:55,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 16:01:55,156 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:01:55,156 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:01:55,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-10-08 16:01:55,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-10-08 16:01:55,371 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:01:55,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:01:55,372 INFO L82 PathProgramCache]: Analyzing trace with hash -925455014, now seen corresponding path program 3 times [2021-10-08 16:01:55,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:01:55,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817740631] [2021-10-08 16:01:55,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:55,373 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:01:55,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:55,622 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 16:01:55,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:01:55,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817740631] [2021-10-08 16:01:55,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817740631] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:55,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465923000] [2021-10-08 16:01:55,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:01:55,624 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:55,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:01:55,626 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:01:55,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-08 16:01:56,104 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 16:01:56,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:01:56,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-08 16:01:56,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:01:56,366 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:01:56,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:01:56,861 INFO L354 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2021-10-08 16:01:56,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 29 [2021-10-08 16:01:56,882 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:01:56,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465923000] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:56,882 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:01:56,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2021-10-08 16:01:56,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832026275] [2021-10-08 16:01:56,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-08 16:01:56,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:01:56,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-08 16:01:56,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2021-10-08 16:01:56,885 INFO L87 Difference]: Start difference. First operand 4914 states and 22547 transitions. Second operand has 23 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:00,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:00,957 INFO L93 Difference]: Finished difference Result 9057 states and 37070 transitions. [2021-10-08 16:02:00,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-08 16:02:00,958 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 16:02:00,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:01,007 INFO L225 Difference]: With dead ends: 9057 [2021-10-08 16:02:01,007 INFO L226 Difference]: Without dead ends: 9057 [2021-10-08 16:02:01,008 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1074 ImplicationChecksByTransitivity, 2527.4ms TimeCoverageRelationStatistics Valid=556, Invalid=3104, Unknown=0, NotChecked=0, Total=3660 [2021-10-08 16:02:01,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9057 states. [2021-10-08 16:02:01,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9057 to 4966. [2021-10-08 16:02:01,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4966 states, 4874 states have (on average 4.656339762002462) internal successors, (22695), 4965 states have internal predecessors, (22695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:01,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4966 states to 4966 states and 22695 transitions. [2021-10-08 16:02:01,178 INFO L78 Accepts]: Start accepts. Automaton has 4966 states and 22695 transitions. Word has length 17 [2021-10-08 16:02:01,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:01,178 INFO L470 AbstractCegarLoop]: Abstraction has 4966 states and 22695 transitions. [2021-10-08 16:02:01,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:01,178 INFO L276 IsEmpty]: Start isEmpty. Operand 4966 states and 22695 transitions. [2021-10-08 16:02:01,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 16:02:01,181 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:01,181 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:02:01,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-10-08 16:02:01,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-10-08 16:02:01,396 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:02:01,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:01,396 INFO L82 PathProgramCache]: Analyzing trace with hash -920698064, now seen corresponding path program 4 times [2021-10-08 16:02:01,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:01,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835777962] [2021-10-08 16:02:01,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:01,397 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:01,596 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 16:02:01,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:01,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835777962] [2021-10-08 16:02:01,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835777962] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:01,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693163091] [2021-10-08 16:02:01,597 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:02:01,597 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:01,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:02:01,598 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:02:01,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-10-08 16:02:02,119 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:02:02,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:02:02,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 16:02:02,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:02:02,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2021-10-08 16:02:02,270 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:02:02,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:02:02,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-10-08 16:02:02,580 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 16:02:02,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693163091] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:02,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:02:02,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2021-10-08 16:02:02,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091254119] [2021-10-08 16:02:02,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 16:02:02,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:02:02,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 16:02:02,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2021-10-08 16:02:02,582 INFO L87 Difference]: Start difference. First operand 4966 states and 22695 transitions. Second operand has 19 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:03,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:03,728 INFO L93 Difference]: Finished difference Result 6128 states and 27906 transitions. [2021-10-08 16:02:03,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 16:02:03,729 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 16:02:03,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:03,752 INFO L225 Difference]: With dead ends: 6128 [2021-10-08 16:02:03,753 INFO L226 Difference]: Without dead ends: 6128 [2021-10-08 16:02:03,753 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 566.3ms TimeCoverageRelationStatistics Valid=137, Invalid=675, Unknown=0, NotChecked=0, Total=812 [2021-10-08 16:02:03,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6128 states. [2021-10-08 16:02:03,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6128 to 4966. [2021-10-08 16:02:03,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4966 states, 4874 states have (on average 4.656339762002462) internal successors, (22695), 4965 states have internal predecessors, (22695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:03,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4966 states to 4966 states and 22695 transitions. [2021-10-08 16:02:03,879 INFO L78 Accepts]: Start accepts. Automaton has 4966 states and 22695 transitions. Word has length 17 [2021-10-08 16:02:03,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:03,880 INFO L470 AbstractCegarLoop]: Abstraction has 4966 states and 22695 transitions. [2021-10-08 16:02:03,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:03,880 INFO L276 IsEmpty]: Start isEmpty. Operand 4966 states and 22695 transitions. [2021-10-08 16:02:03,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 16:02:03,882 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:03,882 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:02:03,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-10-08 16:02:04,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-10-08 16:02:04,083 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:02:04,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:04,084 INFO L82 PathProgramCache]: Analyzing trace with hash 240334336, now seen corresponding path program 5 times [2021-10-08 16:02:04,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:04,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117969308] [2021-10-08 16:02:04,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:04,084 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:04,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:04,679 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:02:04,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:04,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117969308] [2021-10-08 16:02:04,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117969308] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:04,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466340495] [2021-10-08 16:02:04,680 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:02:04,680 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:04,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:02:04,681 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:02:04,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-10-08 16:02:05,212 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:02:05,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:02:05,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-08 16:02:05,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:02:05,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-10-08 16:02:05,832 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:02:05,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466340495] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:05,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:02:05,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 21 [2021-10-08 16:02:05,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033924962] [2021-10-08 16:02:05,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-08 16:02:05,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:02:05,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-08 16:02:05,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2021-10-08 16:02:05,834 INFO L87 Difference]: Start difference. First operand 4966 states and 22695 transitions. Second operand has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:09,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:09,093 INFO L93 Difference]: Finished difference Result 8183 states and 34182 transitions. [2021-10-08 16:02:09,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-08 16:02:09,094 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 16:02:09,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:09,136 INFO L225 Difference]: With dead ends: 8183 [2021-10-08 16:02:09,137 INFO L226 Difference]: Without dead ends: 8183 [2021-10-08 16:02:09,138 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 2691.6ms TimeCoverageRelationStatistics Valid=477, Invalid=2279, Unknown=0, NotChecked=0, Total=2756 [2021-10-08 16:02:09,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8183 states. [2021-10-08 16:02:09,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8183 to 5026. [2021-10-08 16:02:09,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5026 states, 4934 states have (on average 4.646736927442237) internal successors, (22927), 5025 states have internal predecessors, (22927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:09,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5026 states to 5026 states and 22927 transitions. [2021-10-08 16:02:09,301 INFO L78 Accepts]: Start accepts. Automaton has 5026 states and 22927 transitions. Word has length 17 [2021-10-08 16:02:09,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:09,302 INFO L470 AbstractCegarLoop]: Abstraction has 5026 states and 22927 transitions. [2021-10-08 16:02:09,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:09,302 INFO L276 IsEmpty]: Start isEmpty. Operand 5026 states and 22927 transitions. [2021-10-08 16:02:09,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 16:02:09,305 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:09,305 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:02:09,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-10-08 16:02:09,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:09,514 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:02:09,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:09,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1230721736, now seen corresponding path program 3 times [2021-10-08 16:02:09,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:09,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124219022] [2021-10-08 16:02:09,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:09,515 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:09,930 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:02:09,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:09,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124219022] [2021-10-08 16:02:09,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124219022] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:09,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488890942] [2021-10-08 16:02:09,931 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:02:09,931 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:09,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:02:09,933 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:02:09,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-10-08 16:02:10,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 16:02:10,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:02:10,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-08 16:02:10,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:02:11,223 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-10-08 16:02:11,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 47 [2021-10-08 16:02:11,260 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:02:11,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488890942] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:11,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:02:11,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 18 [2021-10-08 16:02:11,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800872622] [2021-10-08 16:02:11,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 16:02:11,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:02:11,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 16:02:11,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2021-10-08 16:02:11,263 INFO L87 Difference]: Start difference. First operand 5026 states and 22927 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:16,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:16,487 INFO L93 Difference]: Finished difference Result 7636 states and 30946 transitions. [2021-10-08 16:02:16,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-08 16:02:16,487 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 16:02:16,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:16,517 INFO L225 Difference]: With dead ends: 7636 [2021-10-08 16:02:16,517 INFO L226 Difference]: Without dead ends: 7436 [2021-10-08 16:02:16,518 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 925 ImplicationChecksByTransitivity, 3819.4ms TimeCoverageRelationStatistics Valid=757, Invalid=2903, Unknown=0, NotChecked=0, Total=3660 [2021-10-08 16:02:16,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7436 states. [2021-10-08 16:02:16,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7436 to 4923. [2021-10-08 16:02:16,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4923 states, 4831 states have (on average 4.495756572138274) internal successors, (21719), 4922 states have internal predecessors, (21719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:16,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4923 states to 4923 states and 21719 transitions. [2021-10-08 16:02:16,667 INFO L78 Accepts]: Start accepts. Automaton has 4923 states and 21719 transitions. Word has length 17 [2021-10-08 16:02:16,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:16,667 INFO L470 AbstractCegarLoop]: Abstraction has 4923 states and 21719 transitions. [2021-10-08 16:02:16,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:16,668 INFO L276 IsEmpty]: Start isEmpty. Operand 4923 states and 21719 transitions. [2021-10-08 16:02:16,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 16:02:16,671 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:16,671 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:02:16,703 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2021-10-08 16:02:16,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:16,885 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:02:16,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:16,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1944810772, now seen corresponding path program 6 times [2021-10-08 16:02:16,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:16,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645165961] [2021-10-08 16:02:16,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:16,886 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:16,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:17,052 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-08 16:02:17,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:17,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645165961] [2021-10-08 16:02:17,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645165961] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:17,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126665303] [2021-10-08 16:02:17,053 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:02:17,053 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:17,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:02:17,055 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:02:17,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-10-08 16:02:17,651 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 16:02:17,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:02:17,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 16:02:17,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:02:18,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-10-08 16:02:18,038 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:02:18,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126665303] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:18,038 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:02:18,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-10-08 16:02:18,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379817597] [2021-10-08 16:02:18,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-08 16:02:18,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:02:18,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-08 16:02:18,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-10-08 16:02:18,041 INFO L87 Difference]: Start difference. First operand 4923 states and 21719 transitions. Second operand has 17 states, 16 states have (on average 1.875) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:20,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:20,441 INFO L93 Difference]: Finished difference Result 9119 states and 39803 transitions. [2021-10-08 16:02:20,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-08 16:02:20,442 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.875) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 16:02:20,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:20,477 INFO L225 Difference]: With dead ends: 9119 [2021-10-08 16:02:20,478 INFO L226 Difference]: Without dead ends: 9119 [2021-10-08 16:02:20,478 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 1624.0ms TimeCoverageRelationStatistics Valid=473, Invalid=2607, Unknown=0, NotChecked=0, Total=3080 [2021-10-08 16:02:20,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9119 states. [2021-10-08 16:02:20,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9119 to 4859. [2021-10-08 16:02:20,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4859 states, 4767 states have (on average 4.518355359765051) internal successors, (21539), 4858 states have internal predecessors, (21539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:20,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4859 states to 4859 states and 21539 transitions. [2021-10-08 16:02:20,637 INFO L78 Accepts]: Start accepts. Automaton has 4859 states and 21539 transitions. Word has length 18 [2021-10-08 16:02:20,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:20,638 INFO L470 AbstractCegarLoop]: Abstraction has 4859 states and 21539 transitions. [2021-10-08 16:02:20,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.875) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:20,638 INFO L276 IsEmpty]: Start isEmpty. Operand 4859 states and 21539 transitions. [2021-10-08 16:02:20,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 16:02:20,641 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:20,641 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:02:20,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-10-08 16:02:20,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:20,856 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:02:20,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:20,857 INFO L82 PathProgramCache]: Analyzing trace with hash 848437824, now seen corresponding path program 1 times [2021-10-08 16:02:20,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:20,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821788951] [2021-10-08 16:02:20,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:20,858 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:20,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:21,960 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:21,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:21,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821788951] [2021-10-08 16:02:21,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821788951] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:21,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735473651] [2021-10-08 16:02:21,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:21,962 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:21,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:02:21,963 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:02:21,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-10-08 16:02:22,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:22,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-08 16:02:22,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:02:22,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 79 [2021-10-08 16:02:23,005 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:02:23,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:02:23,154 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:02:23,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:02:23,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-10-08 16:02:23,566 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:02:23,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735473651] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:23,567 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:02:23,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 25 [2021-10-08 16:02:23,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270315517] [2021-10-08 16:02:23,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-08 16:02:23,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:02:23,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-08 16:02:23,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=621, Unknown=0, NotChecked=0, Total=702 [2021-10-08 16:02:23,569 INFO L87 Difference]: Start difference. First operand 4859 states and 21539 transitions. Second operand has 27 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:27,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:27,240 INFO L93 Difference]: Finished difference Result 7192 states and 28898 transitions. [2021-10-08 16:02:27,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-08 16:02:27,240 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 16:02:27,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:27,264 INFO L225 Difference]: With dead ends: 7192 [2021-10-08 16:02:27,265 INFO L226 Difference]: Without dead ends: 7192 [2021-10-08 16:02:27,265 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 2997.1ms TimeCoverageRelationStatistics Valid=349, Invalid=2407, Unknown=0, NotChecked=0, Total=2756 [2021-10-08 16:02:27,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7192 states. [2021-10-08 16:02:27,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7192 to 4882. [2021-10-08 16:02:27,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4882 states, 4790 states have (on average 4.508768267223382) internal successors, (21597), 4881 states have internal predecessors, (21597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:27,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4882 states to 4882 states and 21597 transitions. [2021-10-08 16:02:27,408 INFO L78 Accepts]: Start accepts. Automaton has 4882 states and 21597 transitions. Word has length 18 [2021-10-08 16:02:27,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:27,408 INFO L470 AbstractCegarLoop]: Abstraction has 4882 states and 21597 transitions. [2021-10-08 16:02:27,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:27,408 INFO L276 IsEmpty]: Start isEmpty. Operand 4882 states and 21597 transitions. [2021-10-08 16:02:27,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 16:02:27,411 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:27,411 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:02:27,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-10-08 16:02:27,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:27,617 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:02:27,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:27,618 INFO L82 PathProgramCache]: Analyzing trace with hash 848437825, now seen corresponding path program 1 times [2021-10-08 16:02:27,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:27,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629820230] [2021-10-08 16:02:27,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:27,619 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:27,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:27,863 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 16:02:27,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:27,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629820230] [2021-10-08 16:02:27,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629820230] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:27,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405641974] [2021-10-08 16:02:27,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:27,864 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:27,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:02:27,866 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:02:27,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-10-08 16:02:28,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:28,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-08 16:02:28,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:02:28,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 502 treesize of output 486 [2021-10-08 16:02:28,859 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:02:28,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:02:28,969 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:02:28,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:02:29,373 INFO L354 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2021-10-08 16:02:29,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 29 [2021-10-08 16:02:29,394 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:02:29,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405641974] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:29,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:02:29,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2021-10-08 16:02:29,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076264408] [2021-10-08 16:02:29,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-08 16:02:29,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:02:29,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-08 16:02:29,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2021-10-08 16:02:29,397 INFO L87 Difference]: Start difference. First operand 4882 states and 21597 transitions. Second operand has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:32,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:32,070 INFO L93 Difference]: Finished difference Result 7969 states and 32814 transitions. [2021-10-08 16:02:32,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-08 16:02:32,071 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 16:02:32,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:32,103 INFO L225 Difference]: With dead ends: 7969 [2021-10-08 16:02:32,103 INFO L226 Difference]: Without dead ends: 7969 [2021-10-08 16:02:32,104 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 1305.5ms TimeCoverageRelationStatistics Valid=322, Invalid=2128, Unknown=0, NotChecked=0, Total=2450 [2021-10-08 16:02:32,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7969 states. [2021-10-08 16:02:32,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7969 to 5163. [2021-10-08 16:02:32,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5163 states, 5071 states have (on average 4.552750936698876) internal successors, (23087), 5162 states have internal predecessors, (23087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:32,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5163 states to 5163 states and 23087 transitions. [2021-10-08 16:02:32,259 INFO L78 Accepts]: Start accepts. Automaton has 5163 states and 23087 transitions. Word has length 18 [2021-10-08 16:02:32,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:32,259 INFO L470 AbstractCegarLoop]: Abstraction has 5163 states and 23087 transitions. [2021-10-08 16:02:32,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:32,259 INFO L276 IsEmpty]: Start isEmpty. Operand 5163 states and 23087 transitions. [2021-10-08 16:02:32,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 16:02:32,262 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:32,262 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:02:32,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2021-10-08 16:02:32,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:32,463 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:02:32,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:32,463 INFO L82 PathProgramCache]: Analyzing trace with hash 848437964, now seen corresponding path program 1 times [2021-10-08 16:02:32,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:32,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754483364] [2021-10-08 16:02:32,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:32,464 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:32,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:33,788 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:02:33,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:33,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754483364] [2021-10-08 16:02:33,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754483364] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:33,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916293972] [2021-10-08 16:02:33,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:33,790 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:33,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:02:33,791 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:02:33,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-10-08 16:02:34,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:34,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 16:02:34,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:02:34,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 660 treesize of output 596 [2021-10-08 16:02:34,729 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:02:34,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:02:34,885 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:02:34,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:02:35,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-10-08 16:02:35,196 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 16:02:35,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916293972] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:35,196 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:02:35,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 24 [2021-10-08 16:02:35,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79354304] [2021-10-08 16:02:35,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-08 16:02:35,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:02:35,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-08 16:02:35,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2021-10-08 16:02:35,198 INFO L87 Difference]: Start difference. First operand 5163 states and 23087 transitions. Second operand has 26 states, 25 states have (on average 1.4) internal successors, (35), 25 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:37,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:37,467 INFO L93 Difference]: Finished difference Result 6876 states and 28147 transitions. [2021-10-08 16:02:37,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-08 16:02:37,468 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.4) internal successors, (35), 25 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 16:02:37,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:37,494 INFO L225 Difference]: With dead ends: 6876 [2021-10-08 16:02:37,494 INFO L226 Difference]: Without dead ends: 6876 [2021-10-08 16:02:37,495 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 2067.2ms TimeCoverageRelationStatistics Valid=309, Invalid=2043, Unknown=0, NotChecked=0, Total=2352 [2021-10-08 16:02:37,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6876 states. [2021-10-08 16:02:37,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6876 to 5215. [2021-10-08 16:02:37,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5215 states, 5123 states have (on average 4.537770837399961) internal successors, (23247), 5214 states have internal predecessors, (23247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:37,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5215 states to 5215 states and 23247 transitions. [2021-10-08 16:02:37,672 INFO L78 Accepts]: Start accepts. Automaton has 5215 states and 23247 transitions. Word has length 18 [2021-10-08 16:02:37,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:37,672 INFO L470 AbstractCegarLoop]: Abstraction has 5215 states and 23247 transitions. [2021-10-08 16:02:37,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.4) internal successors, (35), 25 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:37,673 INFO L276 IsEmpty]: Start isEmpty. Operand 5215 states and 23247 transitions. [2021-10-08 16:02:37,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 16:02:37,675 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:37,675 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:02:37,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2021-10-08 16:02:37,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-10-08 16:02:37,879 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:02:37,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:37,880 INFO L82 PathProgramCache]: Analyzing trace with hash 879100451, now seen corresponding path program 2 times [2021-10-08 16:02:37,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:37,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434787688] [2021-10-08 16:02:37,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:37,881 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:37,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:38,137 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 16:02:38,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:38,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434787688] [2021-10-08 16:02:38,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434787688] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:38,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982989421] [2021-10-08 16:02:38,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:02:38,139 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:38,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:02:38,140 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:02:38,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-10-08 16:02:38,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:02:38,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:02:38,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-08 16:02:38,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:02:38,938 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:02:38,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:02:39,367 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-10-08 16:02:39,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 39 [2021-10-08 16:02:39,384 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 16:02:39,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982989421] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:39,385 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:02:39,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 16:02:39,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507867289] [2021-10-08 16:02:39,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 16:02:39,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:02:39,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 16:02:39,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2021-10-08 16:02:39,387 INFO L87 Difference]: Start difference. First operand 5215 states and 23247 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:41,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:41,451 INFO L93 Difference]: Finished difference Result 9333 states and 38570 transitions. [2021-10-08 16:02:41,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 16:02:41,451 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 16:02:41,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:41,487 INFO L225 Difference]: With dead ends: 9333 [2021-10-08 16:02:41,488 INFO L226 Difference]: Without dead ends: 9333 [2021-10-08 16:02:41,488 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 1113.2ms TimeCoverageRelationStatistics Valid=337, Invalid=1303, Unknown=0, NotChecked=0, Total=1640 [2021-10-08 16:02:41,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9333 states. [2021-10-08 16:02:41,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9333 to 6162. [2021-10-08 16:02:41,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6162 states, 6070 states have (on average 4.355189456342669) internal successors, (26436), 6161 states have internal predecessors, (26436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:41,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6162 states to 6162 states and 26436 transitions. [2021-10-08 16:02:41,694 INFO L78 Accepts]: Start accepts. Automaton has 6162 states and 26436 transitions. Word has length 18 [2021-10-08 16:02:41,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:41,695 INFO L470 AbstractCegarLoop]: Abstraction has 6162 states and 26436 transitions. [2021-10-08 16:02:41,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:41,695 INFO L276 IsEmpty]: Start isEmpty. Operand 6162 states and 26436 transitions. [2021-10-08 16:02:41,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 16:02:41,697 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:41,697 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:02:41,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-10-08 16:02:41,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-10-08 16:02:41,898 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:02:41,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:41,899 INFO L82 PathProgramCache]: Analyzing trace with hash 879100591, now seen corresponding path program 4 times [2021-10-08 16:02:41,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:41,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142329165] [2021-10-08 16:02:41,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:41,900 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:41,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:42,733 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:42,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:42,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142329165] [2021-10-08 16:02:42,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142329165] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:42,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141643217] [2021-10-08 16:02:42,734 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:02:42,734 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:42,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:02:42,735 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:02:42,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-10-08 16:02:43,446 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:02:43,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:02:43,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-08 16:02:43,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:02:43,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:02:43,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:02:43,598 INFO L354 Elim1Store]: treesize reduction 346, result has 12.6 percent of original size [2021-10-08 16:02:43,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 100 [2021-10-08 16:02:45,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-10-08 16:02:45,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:02:45,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-10-08 16:02:46,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:02:46,187 INFO L354 Elim1Store]: treesize reduction 136, result has 34.9 percent of original size [2021-10-08 16:02:46,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 26 case distinctions, treesize of input 72 treesize of output 128 [2021-10-08 16:02:46,441 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-10-08 16:02:46,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2021-10-08 16:02:46,530 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-08 16:02:46,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2021-10-08 16:02:46,811 INFO L354 Elim1Store]: treesize reduction 72, result has 20.9 percent of original size [2021-10-08 16:02:46,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 36 [2021-10-08 16:02:47,856 INFO L354 Elim1Store]: treesize reduction 34, result has 8.1 percent of original size [2021-10-08 16:02:47,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 42 [2021-10-08 16:02:47,899 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:47,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141643217] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:47,899 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:02:47,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 26 [2021-10-08 16:02:47,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541032901] [2021-10-08 16:02:47,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-08 16:02:47,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:02:47,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-08 16:02:47,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=687, Unknown=0, NotChecked=0, Total=756 [2021-10-08 16:02:47,901 INFO L87 Difference]: Start difference. First operand 6162 states and 26436 transitions. Second operand has 28 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 27 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:54,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:54,610 INFO L93 Difference]: Finished difference Result 7058 states and 28877 transitions. [2021-10-08 16:02:54,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-08 16:02:54,611 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 27 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 16:02:54,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:54,630 INFO L225 Difference]: With dead ends: 7058 [2021-10-08 16:02:54,631 INFO L226 Difference]: Without dead ends: 7058 [2021-10-08 16:02:54,631 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1281 ImplicationChecksByTransitivity, 5004.7ms TimeCoverageRelationStatistics Valid=611, Invalid=4645, Unknown=0, NotChecked=0, Total=5256 [2021-10-08 16:02:54,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7058 states. [2021-10-08 16:02:54,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7058 to 6174. [2021-10-08 16:02:54,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6174 states, 6082 states have (on average 4.353502137454784) internal successors, (26478), 6173 states have internal predecessors, (26478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:54,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6174 states to 6174 states and 26478 transitions. [2021-10-08 16:02:54,755 INFO L78 Accepts]: Start accepts. Automaton has 6174 states and 26478 transitions. Word has length 18 [2021-10-08 16:02:54,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:54,755 INFO L470 AbstractCegarLoop]: Abstraction has 6174 states and 26478 transitions. [2021-10-08 16:02:54,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 27 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:54,755 INFO L276 IsEmpty]: Start isEmpty. Operand 6174 states and 26478 transitions. [2021-10-08 16:02:54,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 16:02:54,757 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:54,757 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:02:54,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-10-08 16:02:54,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:54,958 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:02:54,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:54,960 INFO L82 PathProgramCache]: Analyzing trace with hash 614579788, now seen corresponding path program 2 times [2021-10-08 16:02:54,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:54,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921659133] [2021-10-08 16:02:54,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:54,961 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:55,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:55,661 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:02:55,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:55,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921659133] [2021-10-08 16:02:55,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921659133] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:55,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131595026] [2021-10-08 16:02:55,662 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:02:55,663 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:55,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:02:55,664 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:02:55,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-10-08 16:02:56,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:02:56,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:02:56,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 16:02:56,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:02:56,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:02:56,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 209 treesize of output 205 [2021-10-08 16:02:56,690 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:02:56,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:02:56,780 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:02:56,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:02:57,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-10-08 16:02:57,139 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:02:57,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131595026] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:57,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:02:57,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 24 [2021-10-08 16:02:57,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439487054] [2021-10-08 16:02:57,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-08 16:02:57,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:02:57,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-08 16:02:57,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2021-10-08 16:02:57,142 INFO L87 Difference]: Start difference. First operand 6174 states and 26478 transitions. Second operand has 26 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:00,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:00,982 INFO L93 Difference]: Finished difference Result 10275 states and 40190 transitions. [2021-10-08 16:03:00,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-08 16:03:00,987 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 16:03:00,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:01,026 INFO L225 Difference]: With dead ends: 10275 [2021-10-08 16:03:01,026 INFO L226 Difference]: Without dead ends: 10275 [2021-10-08 16:03:01,026 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 647 ImplicationChecksByTransitivity, 2870.2ms TimeCoverageRelationStatistics Valid=427, Invalid=2543, Unknown=0, NotChecked=0, Total=2970 [2021-10-08 16:03:01,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10275 states. [2021-10-08 16:03:01,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10275 to 6174. [2021-10-08 16:03:01,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6174 states, 6082 states have (on average 4.353502137454784) internal successors, (26478), 6173 states have internal predecessors, (26478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:01,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6174 states to 6174 states and 26478 transitions. [2021-10-08 16:03:01,214 INFO L78 Accepts]: Start accepts. Automaton has 6174 states and 26478 transitions. Word has length 18 [2021-10-08 16:03:01,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:01,214 INFO L470 AbstractCegarLoop]: Abstraction has 6174 states and 26478 transitions. [2021-10-08 16:03:01,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:01,214 INFO L276 IsEmpty]: Start isEmpty. Operand 6174 states and 26478 transitions. [2021-10-08 16:03:01,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 16:03:01,216 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:01,216 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:03:01,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2021-10-08 16:03:01,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-10-08 16:03:01,417 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:03:01,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:01,418 INFO L82 PathProgramCache]: Analyzing trace with hash 619336738, now seen corresponding path program 3 times [2021-10-08 16:03:01,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:01,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096162130] [2021-10-08 16:03:01,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:01,419 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:01,663 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 16:03:01,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:01,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096162130] [2021-10-08 16:03:01,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096162130] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:01,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627839060] [2021-10-08 16:03:01,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:03:01,665 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:01,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:01,666 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:01,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-10-08 16:03:02,460 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 16:03:02,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:02,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-08 16:03:02,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:02,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:03:02,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 316 treesize of output 284 [2021-10-08 16:03:02,805 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:03:02,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:03:02,892 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:03:02,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:03:03,281 INFO L354 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2021-10-08 16:03:03,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 29 [2021-10-08 16:03:03,307 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:03:03,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627839060] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:03,307 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:03,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 23 [2021-10-08 16:03:03,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47292931] [2021-10-08 16:03:03,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-08 16:03:03,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:03,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-08 16:03:03,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2021-10-08 16:03:03,310 INFO L87 Difference]: Start difference. First operand 6174 states and 26478 transitions. Second operand has 25 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 24 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:05,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:05,651 INFO L93 Difference]: Finished difference Result 8818 states and 35128 transitions. [2021-10-08 16:03:05,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-08 16:03:05,652 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 24 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 16:03:05,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:05,685 INFO L225 Difference]: With dead ends: 8818 [2021-10-08 16:03:05,685 INFO L226 Difference]: Without dead ends: 8818 [2021-10-08 16:03:05,686 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 1556.5ms TimeCoverageRelationStatistics Valid=304, Invalid=1952, Unknown=0, NotChecked=0, Total=2256 [2021-10-08 16:03:05,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8818 states. [2021-10-08 16:03:05,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8818 to 6126. [2021-10-08 16:03:05,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6126 states, 6034 states have (on average 4.3718926085515415) internal successors, (26380), 6125 states have internal predecessors, (26380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:05,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6126 states to 6126 states and 26380 transitions. [2021-10-08 16:03:05,872 INFO L78 Accepts]: Start accepts. Automaton has 6126 states and 26380 transitions. Word has length 18 [2021-10-08 16:03:05,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:05,872 INFO L470 AbstractCegarLoop]: Abstraction has 6126 states and 26380 transitions. [2021-10-08 16:03:05,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 24 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:05,872 INFO L276 IsEmpty]: Start isEmpty. Operand 6126 states and 26380 transitions. [2021-10-08 16:03:05,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 16:03:05,875 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:05,875 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:03:05,903 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2021-10-08 16:03:06,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:06,076 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:03:06,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:06,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1377207285, now seen corresponding path program 5 times [2021-10-08 16:03:06,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:06,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826879795] [2021-10-08 16:03:06,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:06,077 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:06,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:06,774 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:06,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:06,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826879795] [2021-10-08 16:03:06,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826879795] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:06,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256075260] [2021-10-08 16:03:06,775 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:03:06,775 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:06,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:06,781 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:06,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-10-08 16:03:07,534 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:03:07,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:07,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-08 16:03:07,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:07,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 954 treesize of output 938 [2021-10-08 16:03:08,073 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:03:08,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:03:08,901 INFO L354 Elim1Store]: treesize reduction 38, result has 7.3 percent of original size [2021-10-08 16:03:08,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 53 [2021-10-08 16:03:08,977 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:03:08,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256075260] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:08,977 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:08,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 23 [2021-10-08 16:03:08,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115414295] [2021-10-08 16:03:08,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-08 16:03:08,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:08,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-08 16:03:08,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2021-10-08 16:03:08,979 INFO L87 Difference]: Start difference. First operand 6126 states and 26380 transitions. Second operand has 25 states, 24 states have (on average 1.5) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:16,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:16,270 INFO L93 Difference]: Finished difference Result 9814 states and 37791 transitions. [2021-10-08 16:03:16,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-10-08 16:03:16,271 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.5) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 16:03:16,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:16,307 INFO L225 Difference]: With dead ends: 9814 [2021-10-08 16:03:16,307 INFO L226 Difference]: Without dead ends: 9814 [2021-10-08 16:03:16,308 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1437 ImplicationChecksByTransitivity, 4694.6ms TimeCoverageRelationStatistics Valid=727, Invalid=4973, Unknown=0, NotChecked=0, Total=5700 [2021-10-08 16:03:16,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9814 states. [2021-10-08 16:03:16,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9814 to 6110. [2021-10-08 16:03:16,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6110 states, 6018 states have (on average 4.36922565636424) internal successors, (26294), 6109 states have internal predecessors, (26294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:16,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6110 states to 6110 states and 26294 transitions. [2021-10-08 16:03:16,495 INFO L78 Accepts]: Start accepts. Automaton has 6110 states and 26294 transitions. Word has length 18 [2021-10-08 16:03:16,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:16,495 INFO L470 AbstractCegarLoop]: Abstraction has 6110 states and 26294 transitions. [2021-10-08 16:03:16,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.5) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:16,495 INFO L276 IsEmpty]: Start isEmpty. Operand 6110 states and 26294 transitions. [2021-10-08 16:03:16,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 16:03:16,497 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:16,497 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:03:16,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2021-10-08 16:03:16,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-10-08 16:03:16,698 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:03:16,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:16,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1168691156, now seen corresponding path program 4 times [2021-10-08 16:03:16,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:16,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867760069] [2021-10-08 16:03:16,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:16,700 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:16,916 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 16:03:16,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:16,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867760069] [2021-10-08 16:03:16,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867760069] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:16,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129036888] [2021-10-08 16:03:16,916 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:03:16,917 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:16,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:16,919 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:16,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-10-08 16:03:17,746 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:03:17,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:17,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 16:03:17,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:17,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 204 treesize of output 196 [2021-10-08 16:03:17,971 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:03:17,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:03:18,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-10-08 16:03:18,225 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 16:03:18,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129036888] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:18,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:18,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 18 [2021-10-08 16:03:18,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977131535] [2021-10-08 16:03:18,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 16:03:18,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:18,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 16:03:18,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-10-08 16:03:18,227 INFO L87 Difference]: Start difference. First operand 6110 states and 26294 transitions. Second operand has 20 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:19,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:19,256 INFO L93 Difference]: Finished difference Result 6771 states and 27928 transitions. [2021-10-08 16:03:19,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 16:03:19,257 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 16:03:19,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:19,277 INFO L225 Difference]: With dead ends: 6771 [2021-10-08 16:03:19,277 INFO L226 Difference]: Without dead ends: 6771 [2021-10-08 16:03:19,278 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 766.3ms TimeCoverageRelationStatistics Valid=181, Invalid=875, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 16:03:19,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6771 states. [2021-10-08 16:03:19,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6771 to 6061. [2021-10-08 16:03:19,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6061 states, 5969 states have (on average 4.380633271904841) internal successors, (26148), 6060 states have internal predecessors, (26148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:19,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6061 states to 6061 states and 26148 transitions. [2021-10-08 16:03:19,404 INFO L78 Accepts]: Start accepts. Automaton has 6061 states and 26148 transitions. Word has length 18 [2021-10-08 16:03:19,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:19,405 INFO L470 AbstractCegarLoop]: Abstraction has 6061 states and 26148 transitions. [2021-10-08 16:03:19,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:19,405 INFO L276 IsEmpty]: Start isEmpty. Operand 6061 states and 26148 transitions. [2021-10-08 16:03:19,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 16:03:19,407 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:19,407 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:03:19,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2021-10-08 16:03:19,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2021-10-08 16:03:19,608 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:03:19,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:19,609 INFO L82 PathProgramCache]: Analyzing trace with hash -446663633, now seen corresponding path program 3 times [2021-10-08 16:03:19,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:19,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148432612] [2021-10-08 16:03:19,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:19,609 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:19,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:20,055 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:03:20,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:20,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148432612] [2021-10-08 16:03:20,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148432612] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:20,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179766092] [2021-10-08 16:03:20,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:03:20,056 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:20,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:20,058 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:20,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-10-08 16:03:20,897 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 16:03:20,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:20,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-08 16:03:20,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:20,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:03:20,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:03:20,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:03:20,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:03:21,050 INFO L354 Elim1Store]: treesize reduction 330, result has 13.2 percent of original size [2021-10-08 16:03:21,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 92 [2021-10-08 16:03:21,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-08 16:03:22,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:03:22,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:03:22,278 INFO L354 Elim1Store]: treesize reduction 128, result has 36.3 percent of original size [2021-10-08 16:03:22,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 25 case distinctions, treesize of input 68 treesize of output 124 [2021-10-08 16:03:22,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-10-08 16:03:22,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:03:22,676 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:03:22,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:03:22,775 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:03:22,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:03:23,181 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-10-08 16:03:23,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 76 [2021-10-08 16:03:23,347 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:23,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179766092] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:23,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:23,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2021-10-08 16:03:23,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623464559] [2021-10-08 16:03:23,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-08 16:03:23,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:23,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-08 16:03:23,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2021-10-08 16:03:23,349 INFO L87 Difference]: Start difference. First operand 6061 states and 26148 transitions. Second operand has 23 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:25,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:25,478 INFO L93 Difference]: Finished difference Result 6553 states and 26893 transitions. [2021-10-08 16:03:25,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 16:03:25,479 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 16:03:25,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:25,498 INFO L225 Difference]: With dead ends: 6553 [2021-10-08 16:03:25,499 INFO L226 Difference]: Without dead ends: 6351 [2021-10-08 16:03:25,499 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 1754.5ms TimeCoverageRelationStatistics Valid=209, Invalid=1051, Unknown=0, NotChecked=0, Total=1260 [2021-10-08 16:03:25,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6351 states. [2021-10-08 16:03:25,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6351 to 5543. [2021-10-08 16:03:25,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5543 states, 5451 states have (on average 4.430930104567969) internal successors, (24153), 5542 states have internal predecessors, (24153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:25,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5543 states to 5543 states and 24153 transitions. [2021-10-08 16:03:25,748 INFO L78 Accepts]: Start accepts. Automaton has 5543 states and 24153 transitions. Word has length 18 [2021-10-08 16:03:25,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:25,748 INFO L470 AbstractCegarLoop]: Abstraction has 5543 states and 24153 transitions. [2021-10-08 16:03:25,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:25,748 INFO L276 IsEmpty]: Start isEmpty. Operand 5543 states and 24153 transitions. [2021-10-08 16:03:25,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 16:03:25,750 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:25,750 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:03:25,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2021-10-08 16:03:25,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:25,951 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:03:25,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:25,953 INFO L82 PathProgramCache]: Analyzing trace with hash 275109891, now seen corresponding path program 1 times [2021-10-08 16:03:25,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:25,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74199498] [2021-10-08 16:03:25,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:25,954 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:25,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:26,012 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:03:26,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:26,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74199498] [2021-10-08 16:03:26,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74199498] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:26,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936967860] [2021-10-08 16:03:26,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:26,013 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:26,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:26,014 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:26,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-10-08 16:03:26,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:26,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 16:03:26,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:26,956 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:03:26,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936967860] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:26,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:26,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-08 16:03:26,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196342952] [2021-10-08 16:03:26,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 16:03:26,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:26,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 16:03:26,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-08 16:03:26,958 INFO L87 Difference]: Start difference. First operand 5543 states and 24153 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:27,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:27,141 INFO L93 Difference]: Finished difference Result 10727 states and 40722 transitions. [2021-10-08 16:03:27,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:03:27,141 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 16:03:27,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:27,175 INFO L225 Difference]: With dead ends: 10727 [2021-10-08 16:03:27,175 INFO L226 Difference]: Without dead ends: 9828 [2021-10-08 16:03:27,175 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 52.9ms TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:03:27,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9828 states. [2021-10-08 16:03:27,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9828 to 6983. [2021-10-08 16:03:27,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6983 states, 6877 states have (on average 4.174203867965683) internal successors, (28706), 6982 states have internal predecessors, (28706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:27,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6983 states to 6983 states and 28706 transitions. [2021-10-08 16:03:27,364 INFO L78 Accepts]: Start accepts. Automaton has 6983 states and 28706 transitions. Word has length 18 [2021-10-08 16:03:27,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:27,364 INFO L470 AbstractCegarLoop]: Abstraction has 6983 states and 28706 transitions. [2021-10-08 16:03:27,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:27,364 INFO L276 IsEmpty]: Start isEmpty. Operand 6983 states and 28706 transitions. [2021-10-08 16:03:27,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 16:03:27,368 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:27,368 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:03:27,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2021-10-08 16:03:27,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,50 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:27,569 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:03:27,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:27,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1859078979, now seen corresponding path program 6 times [2021-10-08 16:03:27,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:27,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115983636] [2021-10-08 16:03:27,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:27,570 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:29,099 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:29,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:29,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115983636] [2021-10-08 16:03:29,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115983636] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:29,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517572457] [2021-10-08 16:03:29,100 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:03:29,100 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:29,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:29,101 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:29,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-10-08 16:03:30,028 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 16:03:30,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:30,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-08 16:03:30,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:30,273 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:03:30,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:03:30,853 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-10-08 16:03:30,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 39 [2021-10-08 16:03:30,895 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:03:30,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517572457] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:30,896 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:30,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 25 [2021-10-08 16:03:30,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509001627] [2021-10-08 16:03:30,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-08 16:03:30,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:30,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-08 16:03:30,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2021-10-08 16:03:30,898 INFO L87 Difference]: Start difference. First operand 6983 states and 28706 transitions. Second operand has 27 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 26 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:36,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:36,964 INFO L93 Difference]: Finished difference Result 8572 states and 33542 transitions. [2021-10-08 16:03:36,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-08 16:03:36,964 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 26 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 16:03:36,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:36,988 INFO L225 Difference]: With dead ends: 8572 [2021-10-08 16:03:36,988 INFO L226 Difference]: Without dead ends: 8506 [2021-10-08 16:03:36,989 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1111 ImplicationChecksByTransitivity, 4717.1ms TimeCoverageRelationStatistics Valid=458, Invalid=4234, Unknown=0, NotChecked=0, Total=4692 [2021-10-08 16:03:36,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8506 states. [2021-10-08 16:03:37,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8506 to 7146. [2021-10-08 16:03:37,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7146 states, 7040 states have (on average 4.142329545454546) internal successors, (29162), 7145 states have internal predecessors, (29162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:37,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7146 states to 7146 states and 29162 transitions. [2021-10-08 16:03:37,167 INFO L78 Accepts]: Start accepts. Automaton has 7146 states and 29162 transitions. Word has length 19 [2021-10-08 16:03:37,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:37,168 INFO L470 AbstractCegarLoop]: Abstraction has 7146 states and 29162 transitions. [2021-10-08 16:03:37,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 26 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:37,168 INFO L276 IsEmpty]: Start isEmpty. Operand 7146 states and 29162 transitions. [2021-10-08 16:03:37,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 16:03:37,171 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:37,172 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:03:37,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2021-10-08 16:03:37,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:37,372 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:03:37,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:37,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1937781623, now seen corresponding path program 7 times [2021-10-08 16:03:37,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:37,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029702640] [2021-10-08 16:03:37,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:37,375 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:37,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:38,378 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:38,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:38,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029702640] [2021-10-08 16:03:38,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029702640] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:38,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878226168] [2021-10-08 16:03:38,383 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:03:38,383 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:38,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:38,384 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:38,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-10-08 16:03:39,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:39,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-08 16:03:39,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:39,587 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:03:39,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:03:40,276 INFO L354 Elim1Store]: treesize reduction 48, result has 5.9 percent of original size [2021-10-08 16:03:40,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 45 [2021-10-08 16:03:40,340 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:03:40,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878226168] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:40,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:40,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 26 [2021-10-08 16:03:40,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96941316] [2021-10-08 16:03:40,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-08 16:03:40,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:40,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-08 16:03:40,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=678, Unknown=0, NotChecked=0, Total=756 [2021-10-08 16:03:40,343 INFO L87 Difference]: Start difference. First operand 7146 states and 29162 transitions. Second operand has 28 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 27 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:48,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:48,650 INFO L93 Difference]: Finished difference Result 11449 states and 42713 transitions. [2021-10-08 16:03:48,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-10-08 16:03:48,651 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 27 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 16:03:48,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:48,687 INFO L225 Difference]: With dead ends: 11449 [2021-10-08 16:03:48,687 INFO L226 Difference]: Without dead ends: 11352 [2021-10-08 16:03:48,688 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2199 ImplicationChecksByTransitivity, 6342.7ms TimeCoverageRelationStatistics Valid=899, Invalid=6933, Unknown=0, NotChecked=0, Total=7832 [2021-10-08 16:03:48,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11352 states. [2021-10-08 16:03:48,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11352 to 7535. [2021-10-08 16:03:48,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7535 states, 7429 states have (on average 4.071745860815722) internal successors, (30249), 7534 states have internal predecessors, (30249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:48,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7535 states to 7535 states and 30249 transitions. [2021-10-08 16:03:48,921 INFO L78 Accepts]: Start accepts. Automaton has 7535 states and 30249 transitions. Word has length 19 [2021-10-08 16:03:48,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:48,921 INFO L470 AbstractCegarLoop]: Abstraction has 7535 states and 30249 transitions. [2021-10-08 16:03:48,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 27 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:48,922 INFO L276 IsEmpty]: Start isEmpty. Operand 7535 states and 30249 transitions. [2021-10-08 16:03:48,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 16:03:48,926 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:48,927 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:03:48,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2021-10-08 16:03:49,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,52 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:49,135 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:03:49,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:49,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1750098323, now seen corresponding path program 8 times [2021-10-08 16:03:49,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:49,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888590135] [2021-10-08 16:03:49,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:49,138 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:49,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:50,663 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:50,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:50,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888590135] [2021-10-08 16:03:50,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888590135] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:50,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831706114] [2021-10-08 16:03:50,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:03:50,665 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:50,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:50,666 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:50,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-10-08 16:03:51,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:03:51,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:51,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-08 16:03:51,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:51,863 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:03:51,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:03:52,590 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-10-08 16:03:52,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 38 [2021-10-08 16:03:52,652 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-08 16:03:52,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831706114] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:52,653 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:52,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10] total 25 [2021-10-08 16:03:52,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327010374] [2021-10-08 16:03:52,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-08 16:03:52,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:52,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-08 16:03:52,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2021-10-08 16:03:52,655 INFO L87 Difference]: Start difference. First operand 7535 states and 30249 transitions. Second operand has 27 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:03,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:04:03,321 INFO L93 Difference]: Finished difference Result 9808 states and 36943 transitions. [2021-10-08 16:04:03,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-10-08 16:04:03,321 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 16:04:03,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:04:03,350 INFO L225 Difference]: With dead ends: 9808 [2021-10-08 16:04:03,350 INFO L226 Difference]: Without dead ends: 9728 [2021-10-08 16:04:03,351 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3935 ImplicationChecksByTransitivity, 9325.6ms TimeCoverageRelationStatistics Valid=1722, Invalid=10710, Unknown=0, NotChecked=0, Total=12432 [2021-10-08 16:04:03,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9728 states. [2021-10-08 16:04:03,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9728 to 7515. [2021-10-08 16:04:03,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7515 states, 7409 states have (on average 4.073424213794034) internal successors, (30180), 7514 states have internal predecessors, (30180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:03,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7515 states to 7515 states and 30180 transitions. [2021-10-08 16:04:03,523 INFO L78 Accepts]: Start accepts. Automaton has 7515 states and 30180 transitions. Word has length 19 [2021-10-08 16:04:03,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:04:03,523 INFO L470 AbstractCegarLoop]: Abstraction has 7515 states and 30180 transitions. [2021-10-08 16:04:03,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:03,523 INFO L276 IsEmpty]: Start isEmpty. Operand 7515 states and 30180 transitions. [2021-10-08 16:04:03,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 16:04:03,527 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:04:03,527 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:04:03,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2021-10-08 16:04:03,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,53 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:03,728 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:04:03,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:04:03,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1745110733, now seen corresponding path program 9 times [2021-10-08 16:04:03,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:04:03,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523806006] [2021-10-08 16:04:03,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:04:03,730 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:04:03,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:04:03,947 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-08 16:04:03,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:04:03,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523806006] [2021-10-08 16:04:03,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523806006] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:03,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990403619] [2021-10-08 16:04:03,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:04:03,948 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:03,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:04:03,952 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:04:03,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-10-08 16:04:04,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 16:04:04,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:04:04,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-08 16:04:04,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:04:05,125 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:04:05,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:04:05,642 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-10-08 16:04:05,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 39 [2021-10-08 16:04:05,664 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-08 16:04:05,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990403619] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:05,665 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:04:05,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 16:04:05,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801078079] [2021-10-08 16:04:05,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 16:04:05,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:04:05,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 16:04:05,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2021-10-08 16:04:05,667 INFO L87 Difference]: Start difference. First operand 7515 states and 30180 transitions. Second operand has 22 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:09,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:04:09,061 INFO L93 Difference]: Finished difference Result 9745 states and 37404 transitions. [2021-10-08 16:04:09,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-08 16:04:09,061 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 16:04:09,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:04:09,093 INFO L225 Difference]: With dead ends: 9745 [2021-10-08 16:04:09,093 INFO L226 Difference]: Without dead ends: 9631 [2021-10-08 16:04:09,094 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 801 ImplicationChecksByTransitivity, 2004.4ms TimeCoverageRelationStatistics Valid=549, Invalid=2313, Unknown=0, NotChecked=0, Total=2862 [2021-10-08 16:04:09,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9631 states. [2021-10-08 16:04:09,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9631 to 7101. [2021-10-08 16:04:09,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7101 states, 6995 states have (on average 4.107648320228734) internal successors, (28733), 7100 states have internal predecessors, (28733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:09,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7101 states to 7101 states and 28733 transitions. [2021-10-08 16:04:09,291 INFO L78 Accepts]: Start accepts. Automaton has 7101 states and 28733 transitions. Word has length 19 [2021-10-08 16:04:09,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:04:09,291 INFO L470 AbstractCegarLoop]: Abstraction has 7101 states and 28733 transitions. [2021-10-08 16:04:09,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:09,292 INFO L276 IsEmpty]: Start isEmpty. Operand 7101 states and 28733 transitions. [2021-10-08 16:04:09,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 16:04:09,295 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:04:09,295 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:04:09,323 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2021-10-08 16:04:09,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-10-08 16:04:09,496 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:04:09,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:04:09,497 INFO L82 PathProgramCache]: Analyzing trace with hash 533314615, now seen corresponding path program 1 times [2021-10-08 16:04:09,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:04:09,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091450088] [2021-10-08 16:04:09,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:04:09,498 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:04:09,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:04:10,466 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:10,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:04:10,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091450088] [2021-10-08 16:04:10,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091450088] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:10,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156445573] [2021-10-08 16:04:10,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:04:10,467 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:10,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:04:10,468 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:04:10,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-10-08 16:04:11,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:04:11,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-08 16:04:11,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:04:11,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 442 treesize of output 410 [2021-10-08 16:04:11,788 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:04:11,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:04:11,866 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:04:11,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:04:12,299 INFO L354 Elim1Store]: treesize reduction 48, result has 5.9 percent of original size [2021-10-08 16:04:12,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 45 [2021-10-08 16:04:12,365 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 16:04:12,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156445573] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:12,365 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:04:12,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 23 [2021-10-08 16:04:12,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480703923] [2021-10-08 16:04:12,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-08 16:04:12,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:04:12,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-08 16:04:12,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2021-10-08 16:04:12,367 INFO L87 Difference]: Start difference. First operand 7101 states and 28733 transitions. Second operand has 25 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:19,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:04:19,564 INFO L93 Difference]: Finished difference Result 19040 states and 76721 transitions. [2021-10-08 16:04:19,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-08 16:04:19,564 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 16:04:19,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:04:19,630 INFO L225 Difference]: With dead ends: 19040 [2021-10-08 16:04:19,631 INFO L226 Difference]: Without dead ends: 19040 [2021-10-08 16:04:19,631 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1064 ImplicationChecksByTransitivity, 4282.8ms TimeCoverageRelationStatistics Valid=663, Invalid=4029, Unknown=0, NotChecked=0, Total=4692 [2021-10-08 16:04:19,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19040 states. [2021-10-08 16:04:19,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19040 to 9403. [2021-10-08 16:04:19,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9403 states, 9297 states have (on average 4.434441217597074) internal successors, (41227), 9402 states have internal predecessors, (41227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:19,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9403 states to 9403 states and 41227 transitions. [2021-10-08 16:04:19,965 INFO L78 Accepts]: Start accepts. Automaton has 9403 states and 41227 transitions. Word has length 19 [2021-10-08 16:04:19,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:04:19,966 INFO L470 AbstractCegarLoop]: Abstraction has 9403 states and 41227 transitions. [2021-10-08 16:04:19,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:19,966 INFO L276 IsEmpty]: Start isEmpty. Operand 9403 states and 41227 transitions. [2021-10-08 16:04:19,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 16:04:19,969 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:04:19,969 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:04:19,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2021-10-08 16:04:20,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-10-08 16:04:20,170 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:04:20,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:04:20,171 INFO L82 PathProgramCache]: Analyzing trace with hash 533314616, now seen corresponding path program 2 times [2021-10-08 16:04:20,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:04:20,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329841279] [2021-10-08 16:04:20,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:04:20,172 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:04:20,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:04:20,384 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 16:04:20,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:04:20,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329841279] [2021-10-08 16:04:20,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329841279] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:20,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356118537] [2021-10-08 16:04:20,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:04:20,385 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:20,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:04:20,386 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:04:20,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-10-08 16:04:21,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:04:21,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:04:21,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-08 16:04:21,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:04:21,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 567 treesize of output 551 [2021-10-08 16:04:21,641 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:04:21,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:04:21,704 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:04:21,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:04:22,078 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-10-08 16:04:22,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 39 [2021-10-08 16:04:22,094 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 16:04:22,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356118537] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:22,094 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:04:22,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-08 16:04:22,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753269454] [2021-10-08 16:04:22,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 16:04:22,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:04:22,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 16:04:22,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2021-10-08 16:04:22,096 INFO L87 Difference]: Start difference. First operand 9403 states and 41227 transitions. Second operand has 20 states, 19 states have (on average 1.631578947368421) internal successors, (31), 19 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:23,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:04:23,997 INFO L93 Difference]: Finished difference Result 13991 states and 58449 transitions. [2021-10-08 16:04:23,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 16:04:23,998 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.631578947368421) internal successors, (31), 19 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 16:04:23,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:04:24,053 INFO L225 Difference]: With dead ends: 13991 [2021-10-08 16:04:24,053 INFO L226 Difference]: Without dead ends: 13991 [2021-10-08 16:04:24,054 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 888.7ms TimeCoverageRelationStatistics Valid=280, Invalid=1052, Unknown=0, NotChecked=0, Total=1332 [2021-10-08 16:04:24,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13991 states. [2021-10-08 16:04:24,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13991 to 7714. [2021-10-08 16:04:24,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7714 states, 7608 states have (on average 4.075315457413249) internal successors, (31005), 7713 states have internal predecessors, (31005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:24,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7714 states to 7714 states and 31005 transitions. [2021-10-08 16:04:24,294 INFO L78 Accepts]: Start accepts. Automaton has 7714 states and 31005 transitions. Word has length 19 [2021-10-08 16:04:24,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:04:24,294 INFO L470 AbstractCegarLoop]: Abstraction has 7714 states and 31005 transitions. [2021-10-08 16:04:24,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.631578947368421) internal successors, (31), 19 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:24,295 INFO L276 IsEmpty]: Start isEmpty. Operand 7714 states and 31005 transitions. [2021-10-08 16:04:24,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 16:04:24,298 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:04:24,299 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:04:24,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2021-10-08 16:04:24,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-10-08 16:04:24,499 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:04:24,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:04:24,501 INFO L82 PathProgramCache]: Analyzing trace with hash 533314755, now seen corresponding path program 4 times [2021-10-08 16:04:24,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:04:24,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073547791] [2021-10-08 16:04:24,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:04:24,502 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:04:24,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:04:26,316 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:04:26,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:04:26,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073547791] [2021-10-08 16:04:26,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073547791] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:26,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405198684] [2021-10-08 16:04:26,317 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:04:26,317 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:26,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:04:26,318 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:04:26,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-10-08 16:04:27,374 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:04:27,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:04:27,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 51 conjunts are in the unsatisfiable core [2021-10-08 16:04:27,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:04:27,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:04:27,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:04:27,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:04:27,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:04:27,528 INFO L354 Elim1Store]: treesize reduction 330, result has 13.2 percent of original size [2021-10-08 16:04:27,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 125 treesize of output 147 [2021-10-08 16:04:28,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-08 16:04:28,656 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-10-08 16:04:28,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 47 [2021-10-08 16:04:29,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:04:29,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:04:29,349 INFO L354 Elim1Store]: treesize reduction 128, result has 36.3 percent of original size [2021-10-08 16:04:29,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 25 case distinctions, treesize of input 68 treesize of output 124 [2021-10-08 16:04:29,585 INFO L354 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2021-10-08 16:04:29,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 57 [2021-10-08 16:04:29,739 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:04:29,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 42 [2021-10-08 16:04:30,131 INFO L354 Elim1Store]: treesize reduction 88, result has 20.7 percent of original size [2021-10-08 16:04:30,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 56 [2021-10-08 16:04:30,493 INFO L354 Elim1Store]: treesize reduction 88, result has 20.7 percent of original size [2021-10-08 16:04:30,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 55 [2021-10-08 16:04:31,475 INFO L354 Elim1Store]: treesize reduction 48, result has 5.9 percent of original size [2021-10-08 16:04:31,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 98 treesize of output 59 [2021-10-08 16:04:31,531 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:31,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405198684] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:31,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:04:31,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2021-10-08 16:04:31,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327018320] [2021-10-08 16:04:31,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-08 16:04:31,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:04:31,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-08 16:04:31,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=793, Unknown=0, NotChecked=0, Total=870 [2021-10-08 16:04:31,533 INFO L87 Difference]: Start difference. First operand 7714 states and 31005 transitions. Second operand has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:39,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:04:39,964 INFO L93 Difference]: Finished difference Result 10218 states and 38767 transitions. [2021-10-08 16:04:39,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-08 16:04:39,964 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 16:04:39,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:04:39,999 INFO L225 Difference]: With dead ends: 10218 [2021-10-08 16:04:39,999 INFO L226 Difference]: Without dead ends: 10179 [2021-10-08 16:04:39,999 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1118 ImplicationChecksByTransitivity, 7026.9ms TimeCoverageRelationStatistics Valid=551, Invalid=4419, Unknown=0, NotChecked=0, Total=4970 [2021-10-08 16:04:40,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10179 states. [2021-10-08 16:04:40,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10179 to 7796. [2021-10-08 16:04:40,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7796 states, 7690 states have (on average 4.068270481144343) internal successors, (31285), 7795 states have internal predecessors, (31285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:40,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7796 states to 7796 states and 31285 transitions. [2021-10-08 16:04:40,220 INFO L78 Accepts]: Start accepts. Automaton has 7796 states and 31285 transitions. Word has length 19 [2021-10-08 16:04:40,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:04:40,220 INFO L470 AbstractCegarLoop]: Abstraction has 7796 states and 31285 transitions. [2021-10-08 16:04:40,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:40,220 INFO L276 IsEmpty]: Start isEmpty. Operand 7796 states and 31285 transitions. [2021-10-08 16:04:40,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 16:04:40,224 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:04:40,224 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:04:40,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2021-10-08 16:04:40,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,57 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:40,425 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:04:40,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:04:40,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1873645891, now seen corresponding path program 5 times [2021-10-08 16:04:40,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:04:40,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641158140] [2021-10-08 16:04:40,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:04:40,427 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:04:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:04:40,701 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 16:04:40,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:04:40,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641158140] [2021-10-08 16:04:40,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641158140] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:40,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020003126] [2021-10-08 16:04:40,702 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:04:40,702 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:40,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:04:40,703 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:04:40,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-10-08 16:04:41,777 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:04:41,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:04:41,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-08 16:04:41,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:04:41,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 822 treesize of output 806 [2021-10-08 16:04:41,988 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:04:41,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:04:42,047 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:04:42,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:04:42,673 INFO L354 Elim1Store]: treesize reduction 48, result has 5.9 percent of original size [2021-10-08 16:04:42,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 45 [2021-10-08 16:04:42,722 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:04:42,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020003126] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:42,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:04:42,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 21 [2021-10-08 16:04:42,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424097179] [2021-10-08 16:04:42,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-08 16:04:42,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:04:42,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-08 16:04:42,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2021-10-08 16:04:42,724 INFO L87 Difference]: Start difference. First operand 7796 states and 31285 transitions. Second operand has 23 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:45,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:04:45,560 INFO L93 Difference]: Finished difference Result 10359 states and 40185 transitions. [2021-10-08 16:04:45,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-08 16:04:45,561 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 16:04:45,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:04:45,592 INFO L225 Difference]: With dead ends: 10359 [2021-10-08 16:04:45,592 INFO L226 Difference]: Without dead ends: 10330 [2021-10-08 16:04:45,592 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 1996.6ms TimeCoverageRelationStatistics Valid=398, Invalid=1954, Unknown=0, NotChecked=0, Total=2352 [2021-10-08 16:04:45,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10330 states. [2021-10-08 16:04:45,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10330 to 7752. [2021-10-08 16:04:45,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7752 states, 7646 states have (on average 4.075333507716453) internal successors, (31160), 7751 states have internal predecessors, (31160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:45,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7752 states to 7752 states and 31160 transitions. [2021-10-08 16:04:45,787 INFO L78 Accepts]: Start accepts. Automaton has 7752 states and 31160 transitions. Word has length 19 [2021-10-08 16:04:45,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:04:45,787 INFO L470 AbstractCegarLoop]: Abstraction has 7752 states and 31160 transitions. [2021-10-08 16:04:45,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:45,787 INFO L276 IsEmpty]: Start isEmpty. Operand 7752 states and 31160 transitions. [2021-10-08 16:04:45,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 16:04:45,791 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:04:45,791 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:04:45,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2021-10-08 16:04:45,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,58 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:45,992 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:04:45,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:04:45,993 INFO L82 PathProgramCache]: Analyzing trace with hash 2061329191, now seen corresponding path program 6 times [2021-10-08 16:04:45,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:04:45,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858682421] [2021-10-08 16:04:45,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:04:45,994 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:04:46,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:04:46,251 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 16:04:46,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:04:46,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858682421] [2021-10-08 16:04:46,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858682421] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:46,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311067100] [2021-10-08 16:04:46,252 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:04:46,252 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:46,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:04:46,253 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:04:46,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-10-08 16:04:47,438 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 16:04:47,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:04:47,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 49 conjunts are in the unsatisfiable core [2021-10-08 16:04:47,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:04:47,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:04:47,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:04:47,587 INFO L354 Elim1Store]: treesize reduction 346, result has 12.6 percent of original size [2021-10-08 16:04:47,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 100 [2021-10-08 16:04:48,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-08 16:04:48,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:04:48,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-10-08 16:04:49,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:04:49,309 INFO L354 Elim1Store]: treesize reduction 128, result has 36.3 percent of original size [2021-10-08 16:04:49,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 25 case distinctions, treesize of input 68 treesize of output 124 [2021-10-08 16:04:49,504 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-10-08 16:04:49,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 38 [2021-10-08 16:04:49,576 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-08 16:04:49,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2021-10-08 16:04:49,765 INFO L354 Elim1Store]: treesize reduction 72, result has 20.9 percent of original size [2021-10-08 16:04:49,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 36 [2021-10-08 16:04:49,859 INFO L354 Elim1Store]: treesize reduction 72, result has 20.9 percent of original size [2021-10-08 16:04:49,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 36 [2021-10-08 16:04:50,659 INFO L354 Elim1Store]: treesize reduction 55, result has 24.7 percent of original size [2021-10-08 16:04:50,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 92 treesize of output 73 [2021-10-08 16:04:50,744 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:50,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311067100] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:50,744 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:04:50,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14] total 25 [2021-10-08 16:04:50,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275222983] [2021-10-08 16:04:50,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-08 16:04:50,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:04:50,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-08 16:04:50,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=604, Unknown=0, NotChecked=0, Total=702 [2021-10-08 16:04:50,746 INFO L87 Difference]: Start difference. First operand 7752 states and 31160 transitions. Second operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:55,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:04:55,318 INFO L93 Difference]: Finished difference Result 10155 states and 38560 transitions. [2021-10-08 16:04:55,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-08 16:04:55,319 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 16:04:55,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:04:55,351 INFO L225 Difference]: With dead ends: 10155 [2021-10-08 16:04:55,351 INFO L226 Difference]: Without dead ends: 10067 [2021-10-08 16:04:55,351 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1410 ImplicationChecksByTransitivity, 3474.6ms TimeCoverageRelationStatistics Valid=682, Invalid=4010, Unknown=0, NotChecked=0, Total=4692 [2021-10-08 16:04:55,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10067 states. [2021-10-08 16:04:55,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10067 to 6985. [2021-10-08 16:04:55,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6985 states, 6879 states have (on average 4.1277802006105535) internal successors, (28395), 6984 states have internal predecessors, (28395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:55,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6985 states to 6985 states and 28395 transitions. [2021-10-08 16:04:55,512 INFO L78 Accepts]: Start accepts. Automaton has 6985 states and 28395 transitions. Word has length 19 [2021-10-08 16:04:55,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:04:55,512 INFO L470 AbstractCegarLoop]: Abstraction has 6985 states and 28395 transitions. [2021-10-08 16:04:55,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:55,513 INFO L276 IsEmpty]: Start isEmpty. Operand 6985 states and 28395 transitions. [2021-10-08 16:04:55,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 16:04:55,516 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:04:55,516 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:04:55,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2021-10-08 16:04:55,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,59 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:55,717 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:04:55,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:04:55,717 INFO L82 PathProgramCache]: Analyzing trace with hash -641504965, now seen corresponding path program 2 times [2021-10-08 16:04:55,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:04:55,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023064559] [2021-10-08 16:04:55,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:04:55,718 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:04:55,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:04:55,757 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 16:04:55,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:04:55,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023064559] [2021-10-08 16:04:55,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023064559] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:55,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114991755] [2021-10-08 16:04:55,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:04:55,758 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:55,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:04:55,759 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:04:55,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-10-08 16:04:57,009 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:04:57,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:04:57,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 16:04:57,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:04:57,049 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 16:04:57,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114991755] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:04:57,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:04:57,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2021-10-08 16:04:57,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810571784] [2021-10-08 16:04:57,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:04:57,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:04:57,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:04:57,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:04:57,051 INFO L87 Difference]: Start difference. First operand 6985 states and 28395 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:57,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:04:57,101 INFO L93 Difference]: Finished difference Result 6925 states and 26373 transitions. [2021-10-08 16:04:57,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:04:57,102 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 16:04:57,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:04:57,123 INFO L225 Difference]: With dead ends: 6925 [2021-10-08 16:04:57,124 INFO L226 Difference]: Without dead ends: 6925 [2021-10-08 16:04:57,124 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:04:57,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6925 states. [2021-10-08 16:04:57,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6925 to 6731. [2021-10-08 16:04:57,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6731 states, 6641 states have (on average 3.881192591477187) internal successors, (25775), 6730 states have internal predecessors, (25775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:57,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6731 states to 6731 states and 25775 transitions. [2021-10-08 16:04:57,272 INFO L78 Accepts]: Start accepts. Automaton has 6731 states and 25775 transitions. Word has length 19 [2021-10-08 16:04:57,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:04:57,273 INFO L470 AbstractCegarLoop]: Abstraction has 6731 states and 25775 transitions. [2021-10-08 16:04:57,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:57,273 INFO L276 IsEmpty]: Start isEmpty. Operand 6731 states and 25775 transitions. [2021-10-08 16:04:57,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 16:04:57,276 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:04:57,276 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:04:57,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2021-10-08 16:04:57,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,60 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:57,477 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:04:57,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:04:57,478 INFO L82 PathProgramCache]: Analyzing trace with hash -641505024, now seen corresponding path program 1 times [2021-10-08 16:04:57,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:04:57,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136483151] [2021-10-08 16:04:57,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:04:57,480 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:04:57,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:04:57,542 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 16:04:57,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:04:57,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136483151] [2021-10-08 16:04:57,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136483151] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:57,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090239810] [2021-10-08 16:04:57,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:04:57,543 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:57,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:04:57,551 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:04:57,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-10-08 16:04:58,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:04:58,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 16:04:58,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:04:58,934 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 16:04:58,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090239810] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:58,935 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:04:58,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-08 16:04:58,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313513655] [2021-10-08 16:04:58,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 16:04:58,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:04:58,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 16:04:58,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-08 16:04:58,937 INFO L87 Difference]: Start difference. First operand 6731 states and 25775 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:59,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:04:59,076 INFO L93 Difference]: Finished difference Result 6433 states and 23967 transitions. [2021-10-08 16:04:59,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 16:04:59,076 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 16:04:59,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:04:59,101 INFO L225 Difference]: With dead ends: 6433 [2021-10-08 16:04:59,102 INFO L226 Difference]: Without dead ends: 6358 [2021-10-08 16:04:59,103 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 62.9ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:04:59,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6358 states. [2021-10-08 16:04:59,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6358 to 6156. [2021-10-08 16:04:59,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6156 states, 6066 states have (on average 3.8537751401252884) internal successors, (23377), 6155 states have internal predecessors, (23377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:59,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6156 states to 6156 states and 23377 transitions. [2021-10-08 16:04:59,282 INFO L78 Accepts]: Start accepts. Automaton has 6156 states and 23377 transitions. Word has length 19 [2021-10-08 16:04:59,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:04:59,283 INFO L470 AbstractCegarLoop]: Abstraction has 6156 states and 23377 transitions. [2021-10-08 16:04:59,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:59,283 INFO L276 IsEmpty]: Start isEmpty. Operand 6156 states and 23377 transitions. [2021-10-08 16:04:59,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 16:04:59,287 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:04:59,287 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:04:59,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2021-10-08 16:04:59,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,61 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:59,494 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:04:59,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:04:59,495 INFO L82 PathProgramCache]: Analyzing trace with hash 237465350, now seen corresponding path program 1 times [2021-10-08 16:04:59,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:04:59,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799849175] [2021-10-08 16:04:59,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:04:59,496 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:04:59,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:05:00,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:05:00,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:05:00,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799849175] [2021-10-08 16:05:00,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799849175] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:00,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133480510] [2021-10-08 16:05:00,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:05:00,144 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:05:00,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:05:00,147 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:05:00,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-10-08 16:05:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:05:01,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-08 16:05:01,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:05:02,086 INFO L354 Elim1Store]: treesize reduction 80, result has 30.4 percent of original size [2021-10-08 16:05:02,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 61 [2021-10-08 16:05:02,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:05:02,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133480510] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:02,155 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:05:02,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 21 [2021-10-08 16:05:02,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182430222] [2021-10-08 16:05:02,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-08 16:05:02,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:05:02,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-08 16:05:02,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2021-10-08 16:05:02,156 INFO L87 Difference]: Start difference. First operand 6156 states and 23377 transitions. Second operand has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:24,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:05:24,224 INFO L93 Difference]: Finished difference Result 6406 states and 23969 transitions. [2021-10-08 16:05:24,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 16:05:24,224 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 16:05:24,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:05:24,241 INFO L225 Difference]: With dead ends: 6406 [2021-10-08 16:05:24,241 INFO L226 Difference]: Without dead ends: 6406 [2021-10-08 16:05:24,242 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 5107.6ms TimeCoverageRelationStatistics Valid=241, Invalid=1163, Unknown=2, NotChecked=0, Total=1406 [2021-10-08 16:05:24,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6406 states. [2021-10-08 16:05:24,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6406 to 6233. [2021-10-08 16:05:24,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6233 states, 6143 states have (on average 3.837538661891584) internal successors, (23574), 6232 states have internal predecessors, (23574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:24,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6233 states to 6233 states and 23574 transitions. [2021-10-08 16:05:24,361 INFO L78 Accepts]: Start accepts. Automaton has 6233 states and 23574 transitions. Word has length 19 [2021-10-08 16:05:24,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:05:24,361 INFO L470 AbstractCegarLoop]: Abstraction has 6233 states and 23574 transitions. [2021-10-08 16:05:24,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:24,362 INFO L276 IsEmpty]: Start isEmpty. Operand 6233 states and 23574 transitions. [2021-10-08 16:05:24,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 16:05:24,365 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:05:24,365 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:05:24,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2021-10-08 16:05:24,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2021-10-08 16:05:24,566 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:05:24,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:05:24,566 INFO L82 PathProgramCache]: Analyzing trace with hash 237465351, now seen corresponding path program 1 times [2021-10-08 16:05:24,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:05:24,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684766597] [2021-10-08 16:05:24,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:05:24,568 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:05:24,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:05:24,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:05:24,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:05:24,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684766597] [2021-10-08 16:05:24,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684766597] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:24,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989735673] [2021-10-08 16:05:24,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:05:24,735 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:05:24,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:05:24,740 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:05:24,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-10-08 16:05:25,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:05:25,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 16:05:25,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:05:26,119 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:05:26,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2021-10-08 16:05:26,139 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:05:26,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989735673] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:05:26,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:05:26,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2021-10-08 16:05:26,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919088893] [2021-10-08 16:05:26,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:05:26,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:05:26,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:05:26,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:05:26,141 INFO L87 Difference]: Start difference. First operand 6233 states and 23574 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:26,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:05:26,314 INFO L93 Difference]: Finished difference Result 6341 states and 23843 transitions. [2021-10-08 16:05:26,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 16:05:26,314 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 16:05:26,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:05:26,331 INFO L225 Difference]: With dead ends: 6341 [2021-10-08 16:05:26,332 INFO L226 Difference]: Without dead ends: 6341 [2021-10-08 16:05:26,332 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 166.3ms TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-10-08 16:05:26,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6341 states. [2021-10-08 16:05:26,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6341 to 6247. [2021-10-08 16:05:26,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6247 states, 6157 states have (on average 3.8327107357479293) internal successors, (23598), 6246 states have internal predecessors, (23598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:26,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6247 states to 6247 states and 23598 transitions. [2021-10-08 16:05:26,463 INFO L78 Accepts]: Start accepts. Automaton has 6247 states and 23598 transitions. Word has length 19 [2021-10-08 16:05:26,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:05:26,463 INFO L470 AbstractCegarLoop]: Abstraction has 6247 states and 23598 transitions. [2021-10-08 16:05:26,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:26,464 INFO L276 IsEmpty]: Start isEmpty. Operand 6247 states and 23598 transitions. [2021-10-08 16:05:26,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 16:05:26,467 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:05:26,467 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:05:26,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2021-10-08 16:05:26,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2021-10-08 16:05:26,668 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:05:26,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:05:26,668 INFO L82 PathProgramCache]: Analyzing trace with hash 237465352, now seen corresponding path program 1 times [2021-10-08 16:05:26,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:05:26,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487375343] [2021-10-08 16:05:26,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:05:26,669 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:05:26,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:05:27,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:05:27,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:05:27,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487375343] [2021-10-08 16:05:27,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487375343] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:27,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575620727] [2021-10-08 16:05:27,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:05:27,123 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:05:27,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:05:27,125 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:05:27,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-10-08 16:05:28,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:05:28,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 16:05:28,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:05:28,667 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:05:28,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2021-10-08 16:05:28,755 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:05:28,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575620727] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:28,756 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:05:28,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 18 [2021-10-08 16:05:28,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037222811] [2021-10-08 16:05:28,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 16:05:28,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:05:28,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 16:05:28,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2021-10-08 16:05:28,757 INFO L87 Difference]: Start difference. First operand 6247 states and 23598 transitions. Second operand has 20 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:29,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:05:29,697 INFO L93 Difference]: Finished difference Result 6473 states and 23988 transitions. [2021-10-08 16:05:29,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 16:05:29,697 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 16:05:29,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:05:29,715 INFO L225 Difference]: With dead ends: 6473 [2021-10-08 16:05:29,715 INFO L226 Difference]: Without dead ends: 6459 [2021-10-08 16:05:29,715 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 893.8ms TimeCoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2021-10-08 16:05:29,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6459 states. [2021-10-08 16:05:29,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6459 to 6273. [2021-10-08 16:05:29,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6273 states, 6183 states have (on average 3.825004043344655) internal successors, (23650), 6272 states have internal predecessors, (23650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:29,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6273 states to 6273 states and 23650 transitions. [2021-10-08 16:05:29,840 INFO L78 Accepts]: Start accepts. Automaton has 6273 states and 23650 transitions. Word has length 19 [2021-10-08 16:05:29,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:05:29,840 INFO L470 AbstractCegarLoop]: Abstraction has 6273 states and 23650 transitions. [2021-10-08 16:05:29,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:29,841 INFO L276 IsEmpty]: Start isEmpty. Operand 6273 states and 23650 transitions. [2021-10-08 16:05:29,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 16:05:29,844 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:05:29,844 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:05:29,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2021-10-08 16:05:30,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,64 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:05:30,045 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:05:30,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:05:30,046 INFO L82 PathProgramCache]: Analyzing trace with hash 202461082, now seen corresponding path program 2 times [2021-10-08 16:05:30,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:05:30,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502047579] [2021-10-08 16:05:30,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:05:30,047 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:05:30,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:05:30,420 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:05:30,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:05:30,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502047579] [2021-10-08 16:05:30,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502047579] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:30,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711210585] [2021-10-08 16:05:30,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:05:30,421 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:05:30,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:05:30,423 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:05:30,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-10-08 16:05:31,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:05:31,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:05:31,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:05:31,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:05:31,840 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:05:31,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711210585] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:05:31,841 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:05:31,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 14 [2021-10-08 16:05:31,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449044225] [2021-10-08 16:05:31,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 16:05:31,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:05:31,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 16:05:31,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:05:31,842 INFO L87 Difference]: Start difference. First operand 6273 states and 23650 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:31,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:05:31,983 INFO L93 Difference]: Finished difference Result 6373 states and 23906 transitions. [2021-10-08 16:05:31,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 16:05:31,984 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 16:05:31,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:05:32,003 INFO L225 Difference]: With dead ends: 6373 [2021-10-08 16:05:32,003 INFO L226 Difference]: Without dead ends: 6373 [2021-10-08 16:05:32,003 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 247.5ms TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:05:32,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6373 states. [2021-10-08 16:05:32,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6373 to 6279. [2021-10-08 16:05:32,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6279 states, 6189 states have (on average 3.8230731943771206) internal successors, (23661), 6278 states have internal predecessors, (23661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:32,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6279 states to 6279 states and 23661 transitions. [2021-10-08 16:05:32,211 INFO L78 Accepts]: Start accepts. Automaton has 6279 states and 23661 transitions. Word has length 19 [2021-10-08 16:05:32,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:05:32,211 INFO L470 AbstractCegarLoop]: Abstraction has 6279 states and 23661 transitions. [2021-10-08 16:05:32,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:32,211 INFO L276 IsEmpty]: Start isEmpty. Operand 6279 states and 23661 transitions. [2021-10-08 16:05:32,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 16:05:32,214 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:05:32,214 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:05:32,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2021-10-08 16:05:32,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2021-10-08 16:05:32,423 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:05:32,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:05:32,424 INFO L82 PathProgramCache]: Analyzing trace with hash 202461135, now seen corresponding path program 1 times [2021-10-08 16:05:32,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:05:32,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363707470] [2021-10-08 16:05:32,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:05:32,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:05:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:05:32,457 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:05:32,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:05:32,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363707470] [2021-10-08 16:05:32,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363707470] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:05:32,458 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:05:32,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 16:05:32,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158212779] [2021-10-08 16:05:32,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:05:32,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:05:32,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:05:32,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:05:32,459 INFO L87 Difference]: Start difference. First operand 6279 states and 23661 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:32,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:05:32,530 INFO L93 Difference]: Finished difference Result 6843 states and 25551 transitions. [2021-10-08 16:05:32,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:05:32,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 16:05:32,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:05:32,559 INFO L225 Difference]: With dead ends: 6843 [2021-10-08 16:05:32,559 INFO L226 Difference]: Without dead ends: 6809 [2021-10-08 16:05:32,560 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:05:32,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6809 states. [2021-10-08 16:05:32,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6809 to 6323. [2021-10-08 16:05:32,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6323 states, 6233 states have (on average 3.847104123215145) internal successors, (23979), 6322 states have internal predecessors, (23979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:32,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6323 states to 6323 states and 23979 transitions. [2021-10-08 16:05:32,757 INFO L78 Accepts]: Start accepts. Automaton has 6323 states and 23979 transitions. Word has length 19 [2021-10-08 16:05:32,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:05:32,758 INFO L470 AbstractCegarLoop]: Abstraction has 6323 states and 23979 transitions. [2021-10-08 16:05:32,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:32,758 INFO L276 IsEmpty]: Start isEmpty. Operand 6323 states and 23979 transitions. [2021-10-08 16:05:32,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 16:05:32,762 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:05:32,763 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:05:32,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-10-08 16:05:32,763 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:05:32,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:05:32,763 INFO L82 PathProgramCache]: Analyzing trace with hash 748396744, now seen corresponding path program 2 times [2021-10-08 16:05:32,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:05:32,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483469518] [2021-10-08 16:05:32,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:05:32,764 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:05:32,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:05:33,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:05:33,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:05:33,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483469518] [2021-10-08 16:05:33,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483469518] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:33,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079863272] [2021-10-08 16:05:33,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:05:33,305 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:05:33,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:05:33,306 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:05:33,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-10-08 16:05:34,639 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:05:34,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:05:34,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 16:05:34,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:05:34,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 323 treesize of output 315 [2021-10-08 16:05:34,840 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:05:34,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:05:35,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:05:35,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079863272] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:05:35,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:05:35,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 17 [2021-10-08 16:05:35,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390584207] [2021-10-08 16:05:35,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 16:05:35,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:05:35,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 16:05:35,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-10-08 16:05:35,006 INFO L87 Difference]: Start difference. First operand 6323 states and 23979 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:35,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:05:35,898 INFO L93 Difference]: Finished difference Result 6411 states and 24154 transitions. [2021-10-08 16:05:35,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 16:05:35,898 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 16:05:35,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:05:35,924 INFO L225 Difference]: With dead ends: 6411 [2021-10-08 16:05:35,924 INFO L226 Difference]: Without dead ends: 6368 [2021-10-08 16:05:35,924 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 472.5ms TimeCoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2021-10-08 16:05:35,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6368 states. [2021-10-08 16:05:36,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6368 to 6346. [2021-10-08 16:05:36,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6346 states, 6256 states have (on average 3.8312020460358056) internal successors, (23968), 6345 states have internal predecessors, (23968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:36,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6346 states to 6346 states and 23968 transitions. [2021-10-08 16:05:36,178 INFO L78 Accepts]: Start accepts. Automaton has 6346 states and 23968 transitions. Word has length 19 [2021-10-08 16:05:36,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:05:36,179 INFO L470 AbstractCegarLoop]: Abstraction has 6346 states and 23968 transitions. [2021-10-08 16:05:36,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:36,179 INFO L276 IsEmpty]: Start isEmpty. Operand 6346 states and 23968 transitions. [2021-10-08 16:05:36,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 16:05:36,182 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:05:36,182 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:05:36,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2021-10-08 16:05:36,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-10-08 16:05:36,383 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:05:36,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:05:36,384 INFO L82 PathProgramCache]: Analyzing trace with hash -119908256, now seen corresponding path program 3 times [2021-10-08 16:05:36,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:05:36,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318036413] [2021-10-08 16:05:36,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:05:36,386 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:05:36,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:05:36,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:05:36,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:05:36,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318036413] [2021-10-08 16:05:36,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318036413] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:36,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126363591] [2021-10-08 16:05:36,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:05:36,973 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:05:36,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:05:36,974 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:05:36,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-10-08 16:05:38,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-08 16:05:38,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:05:38,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 16:05:38,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:05:38,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2021-10-08 16:05:38,699 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:05:38,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:05:38,924 INFO L354 Elim1Store]: treesize reduction 92, result has 20.0 percent of original size [2021-10-08 16:05:38,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 47 [2021-10-08 16:05:38,989 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:05:38,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126363591] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:05:38,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:05:38,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 20 [2021-10-08 16:05:38,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049451479] [2021-10-08 16:05:38,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 16:05:38,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:05:38,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 16:05:38,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2021-10-08 16:05:38,992 INFO L87 Difference]: Start difference. First operand 6346 states and 23968 transitions. Second operand has 11 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:42,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:05:42,157 INFO L93 Difference]: Finished difference Result 6384 states and 24030 transitions. [2021-10-08 16:05:42,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 16:05:42,158 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 16:05:42,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:05:42,177 INFO L225 Difference]: With dead ends: 6384 [2021-10-08 16:05:42,178 INFO L226 Difference]: Without dead ends: 6335 [2021-10-08 16:05:42,178 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 676.6ms TimeCoverageRelationStatistics Valid=70, Invalid=580, Unknown=0, NotChecked=0, Total=650 [2021-10-08 16:05:42,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6335 states. [2021-10-08 16:05:42,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6335 to 6294. [2021-10-08 16:05:42,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6294 states, 6204 states have (on average 3.84284332688588) internal successors, (23841), 6293 states have internal predecessors, (23841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:42,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6294 states to 6294 states and 23841 transitions. [2021-10-08 16:05:42,321 INFO L78 Accepts]: Start accepts. Automaton has 6294 states and 23841 transitions. Word has length 19 [2021-10-08 16:05:42,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:05:42,321 INFO L470 AbstractCegarLoop]: Abstraction has 6294 states and 23841 transitions. [2021-10-08 16:05:42,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:42,322 INFO L276 IsEmpty]: Start isEmpty. Operand 6294 states and 23841 transitions. [2021-10-08 16:05:42,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 16:05:42,325 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:05:42,325 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:05:42,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2021-10-08 16:05:42,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,67 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:05:42,526 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:05:42,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:05:42,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1797066726, now seen corresponding path program 1 times [2021-10-08 16:05:42,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:05:42,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196561746] [2021-10-08 16:05:42,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:05:42,528 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:05:42,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:05:43,189 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:05:43,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:05:43,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196561746] [2021-10-08 16:05:43,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196561746] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:43,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327853263] [2021-10-08 16:05:43,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:05:43,191 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:05:43,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:05:43,192 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:05:43,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2021-10-08 16:05:44,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:05:44,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 16:05:44,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:05:44,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2021-10-08 16:05:44,730 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:05:44,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:05:45,244 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-10-08 16:05:45,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 18 [2021-10-08 16:05:45,267 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-08 16:05:45,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327853263] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:45,268 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:05:45,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 24 [2021-10-08 16:05:45,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22586382] [2021-10-08 16:05:45,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-08 16:05:45,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:05:45,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-08 16:05:45,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2021-10-08 16:05:45,270 INFO L87 Difference]: Start difference. First operand 6294 states and 23841 transitions. Second operand has 26 states, 25 states have (on average 1.52) internal successors, (38), 25 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:49,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:05:49,984 INFO L93 Difference]: Finished difference Result 16418 states and 58393 transitions. [2021-10-08 16:05:49,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-08 16:05:49,984 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.52) internal successors, (38), 25 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 16:05:49,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:05:50,030 INFO L225 Difference]: With dead ends: 16418 [2021-10-08 16:05:50,030 INFO L226 Difference]: Without dead ends: 16389 [2021-10-08 16:05:50,031 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1199 ImplicationChecksByTransitivity, 2992.7ms TimeCoverageRelationStatistics Valid=537, Invalid=3753, Unknown=0, NotChecked=0, Total=4290 [2021-10-08 16:05:50,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16389 states. [2021-10-08 16:05:50,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16389 to 7460. [2021-10-08 16:05:50,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7460 states, 7370 states have (on average 3.786024423337856) internal successors, (27903), 7459 states have internal predecessors, (27903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:50,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7460 states to 7460 states and 27903 transitions. [2021-10-08 16:05:50,268 INFO L78 Accepts]: Start accepts. Automaton has 7460 states and 27903 transitions. Word has length 20 [2021-10-08 16:05:50,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:05:50,268 INFO L470 AbstractCegarLoop]: Abstraction has 7460 states and 27903 transitions. [2021-10-08 16:05:50,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.52) internal successors, (38), 25 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:50,268 INFO L276 IsEmpty]: Start isEmpty. Operand 7460 states and 27903 transitions. [2021-10-08 16:05:50,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 16:05:50,272 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:05:50,272 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:05:50,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2021-10-08 16:05:50,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,68 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:05:50,473 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:05:50,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:05:50,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1581720199, now seen corresponding path program 7 times [2021-10-08 16:05:50,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:05:50,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514359281] [2021-10-08 16:05:50,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:05:50,475 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:05:50,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:05:51,267 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:05:51,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:05:51,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514359281] [2021-10-08 16:05:51,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514359281] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:51,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271416281] [2021-10-08 16:05:51,268 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:05:51,268 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:05:51,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:05:51,269 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:05:51,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2021-10-08 16:05:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:05:52,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 16:05:52,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:05:52,786 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:05:52,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:05:53,468 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-10-08 16:05:53,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 18 [2021-10-08 16:05:53,500 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-08 16:05:53,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271416281] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:53,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:05:53,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 25 [2021-10-08 16:05:53,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86389992] [2021-10-08 16:05:53,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-08 16:05:53,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:05:53,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-08 16:05:53,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=623, Unknown=0, NotChecked=0, Total=702 [2021-10-08 16:05:53,502 INFO L87 Difference]: Start difference. First operand 7460 states and 27903 transitions. Second operand has 27 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 26 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:00,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:06:00,504 INFO L93 Difference]: Finished difference Result 16408 states and 59512 transitions. [2021-10-08 16:06:00,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-08 16:06:00,504 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 26 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 16:06:00,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:06:00,554 INFO L225 Difference]: With dead ends: 16408 [2021-10-08 16:06:00,554 INFO L226 Difference]: Without dead ends: 16333 [2021-10-08 16:06:00,554 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1669 ImplicationChecksByTransitivity, 4930.9ms TimeCoverageRelationStatistics Valid=758, Invalid=5248, Unknown=0, NotChecked=0, Total=6006 [2021-10-08 16:06:00,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16333 states. [2021-10-08 16:06:00,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16333 to 7596. [2021-10-08 16:06:00,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7596 states, 7506 states have (on average 3.7748467892352786) internal successors, (28334), 7595 states have internal predecessors, (28334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:00,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7596 states to 7596 states and 28334 transitions. [2021-10-08 16:06:00,779 INFO L78 Accepts]: Start accepts. Automaton has 7596 states and 28334 transitions. Word has length 20 [2021-10-08 16:06:00,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:06:00,779 INFO L470 AbstractCegarLoop]: Abstraction has 7596 states and 28334 transitions. [2021-10-08 16:06:00,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 26 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:00,780 INFO L276 IsEmpty]: Start isEmpty. Operand 7596 states and 28334 transitions. [2021-10-08 16:06:00,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 16:06:00,784 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:06:00,784 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:06:00,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2021-10-08 16:06:00,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,69 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:06:00,985 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:06:00,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:06:00,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1736335489, now seen corresponding path program 8 times [2021-10-08 16:06:00,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:06:00,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157002251] [2021-10-08 16:06:00,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:06:00,987 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:06:01,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:06:01,937 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:06:01,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:06:01,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157002251] [2021-10-08 16:06:01,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157002251] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:06:01,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856221052] [2021-10-08 16:06:01,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:06:01,938 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:06:01,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:06:01,939 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:06:01,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2021-10-08 16:06:03,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:06:03,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:06:03,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-08 16:06:03,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:06:03,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:06:03,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:06:03,488 INFO L354 Elim1Store]: treesize reduction 346, result has 12.6 percent of original size [2021-10-08 16:06:03,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 100 [2021-10-08 16:06:04,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-08 16:06:05,526 INFO L354 Elim1Store]: treesize reduction 19, result has 40.6 percent of original size [2021-10-08 16:06:05,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 36 [2021-10-08 16:06:06,187 INFO L354 Elim1Store]: treesize reduction 19, result has 40.6 percent of original size [2021-10-08 16:06:06,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 41 [2021-10-08 16:06:06,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:06:06,480 INFO L354 Elim1Store]: treesize reduction 136, result has 34.9 percent of original size [2021-10-08 16:06:06,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 26 case distinctions, treesize of input 72 treesize of output 128 [2021-10-08 16:06:06,700 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-10-08 16:06:06,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 42 [2021-10-08 16:06:06,807 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-08 16:06:06,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 31 [2021-10-08 16:06:07,049 INFO L354 Elim1Store]: treesize reduction 72, result has 20.9 percent of original size [2021-10-08 16:06:07,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 44 [2021-10-08 16:06:08,205 INFO L354 Elim1Store]: treesize reduction 34, result has 8.1 percent of original size [2021-10-08 16:06:08,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 32 [2021-10-08 16:06:08,251 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:06:08,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856221052] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:06:08,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:06:08,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2021-10-08 16:06:08,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950946547] [2021-10-08 16:06:08,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-08 16:06:08,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:06:08,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-08 16:06:08,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2021-10-08 16:06:08,254 INFO L87 Difference]: Start difference. First operand 7596 states and 28334 transitions. Second operand has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:15,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:06:15,129 INFO L93 Difference]: Finished difference Result 8830 states and 31801 transitions. [2021-10-08 16:06:15,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-08 16:06:15,130 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 16:06:15,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:06:15,153 INFO L225 Difference]: With dead ends: 8830 [2021-10-08 16:06:15,153 INFO L226 Difference]: Without dead ends: 8810 [2021-10-08 16:06:15,153 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1250 ImplicationChecksByTransitivity, 5934.6ms TimeCoverageRelationStatistics Valid=548, Invalid=4708, Unknown=0, NotChecked=0, Total=5256 [2021-10-08 16:06:15,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8810 states. [2021-10-08 16:06:15,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8810 to 7596. [2021-10-08 16:06:15,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7596 states, 7506 states have (on average 3.7741806554756194) internal successors, (28329), 7595 states have internal predecessors, (28329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:15,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7596 states to 7596 states and 28329 transitions. [2021-10-08 16:06:15,305 INFO L78 Accepts]: Start accepts. Automaton has 7596 states and 28329 transitions. Word has length 20 [2021-10-08 16:06:15,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:06:15,305 INFO L470 AbstractCegarLoop]: Abstraction has 7596 states and 28329 transitions. [2021-10-08 16:06:15,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:15,305 INFO L276 IsEmpty]: Start isEmpty. Operand 7596 states and 28329 transitions. [2021-10-08 16:06:15,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 16:06:15,309 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:06:15,309 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:06:15,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2021-10-08 16:06:15,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,70 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:06:15,510 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:06:15,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:06:15,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1741092439, now seen corresponding path program 9 times [2021-10-08 16:06:15,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:06:15,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362537264] [2021-10-08 16:06:15,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:06:15,512 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:06:15,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:06:16,332 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:06:16,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:06:16,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362537264] [2021-10-08 16:06:16,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362537264] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:06:16,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750803895] [2021-10-08 16:06:16,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:06:16,334 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:06:16,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:06:16,335 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:06:16,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2021-10-08 16:06:17,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 16:06:17,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:06:17,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 16:06:17,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:06:17,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:06:17,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2021-10-08 16:06:18,081 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:06:18,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 30 [2021-10-08 16:06:18,684 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-10-08 16:06:18,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 18 [2021-10-08 16:06:18,718 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-08 16:06:18,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750803895] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:06:18,718 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:06:18,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 26 [2021-10-08 16:06:18,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497331426] [2021-10-08 16:06:18,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-08 16:06:18,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:06:18,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-08 16:06:18,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=666, Unknown=0, NotChecked=0, Total=756 [2021-10-08 16:06:18,720 INFO L87 Difference]: Start difference. First operand 7596 states and 28329 transitions. Second operand has 28 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 27 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:23,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:06:23,900 INFO L93 Difference]: Finished difference Result 13771 states and 48090 transitions. [2021-10-08 16:06:23,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-08 16:06:23,900 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 27 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 16:06:23,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:06:23,948 INFO L225 Difference]: With dead ends: 13771 [2021-10-08 16:06:23,948 INFO L226 Difference]: Without dead ends: 13678 [2021-10-08 16:06:23,949 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1083 ImplicationChecksByTransitivity, 3604.1ms TimeCoverageRelationStatistics Valid=492, Invalid=3668, Unknown=0, NotChecked=0, Total=4160 [2021-10-08 16:06:23,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13678 states. [2021-10-08 16:06:24,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13678 to 7540. [2021-10-08 16:06:24,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7540 states, 7450 states have (on average 3.784429530201342) internal successors, (28194), 7539 states have internal predecessors, (28194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:24,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7540 states to 7540 states and 28194 transitions. [2021-10-08 16:06:24,242 INFO L78 Accepts]: Start accepts. Automaton has 7540 states and 28194 transitions. Word has length 20 [2021-10-08 16:06:24,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:06:24,242 INFO L470 AbstractCegarLoop]: Abstraction has 7540 states and 28194 transitions. [2021-10-08 16:06:24,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 27 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:24,243 INFO L276 IsEmpty]: Start isEmpty. Operand 7540 states and 28194 transitions. [2021-10-08 16:06:24,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 16:06:24,253 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:06:24,253 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:06:24,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2021-10-08 16:06:24,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,71 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:06:24,466 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:06:24,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:06:24,470 INFO L82 PathProgramCache]: Analyzing trace with hash -147306478, now seen corresponding path program 1 times [2021-10-08 16:06:24,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:06:24,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005802251] [2021-10-08 16:06:24,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:06:24,470 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:06:24,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:06:24,898 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:06:24,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:06:24,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005802251] [2021-10-08 16:06:24,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005802251] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:06:24,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575244076] [2021-10-08 16:06:24,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:06:24,899 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:06:24,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:06:24,902 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:06:24,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2021-10-08 16:06:26,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:06:26,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-08 16:06:26,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:06:26,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:06:26,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:06:26,550 INFO L354 Elim1Store]: treesize reduction 346, result has 12.6 percent of original size [2021-10-08 16:06:26,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 443 treesize of output 465 [2021-10-08 16:06:28,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-08 16:06:28,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:06:28,735 INFO L354 Elim1Store]: treesize reduction 136, result has 34.9 percent of original size [2021-10-08 16:06:28,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 26 case distinctions, treesize of input 72 treesize of output 128 [2021-10-08 16:06:28,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 34 [2021-10-08 16:06:28,959 INFO L354 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2021-10-08 16:06:28,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 46 [2021-10-08 16:06:29,043 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:06:29,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-10-08 16:06:29,144 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:06:29,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2021-10-08 16:06:29,406 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-08 16:06:29,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2021-10-08 16:06:29,436 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:06:29,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575244076] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:06:29,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:06:29,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 22 [2021-10-08 16:06:29,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99951177] [2021-10-08 16:06:29,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-08 16:06:29,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:06:29,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-08 16:06:29,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2021-10-08 16:06:29,438 INFO L87 Difference]: Start difference. First operand 7540 states and 28194 transitions. Second operand has 24 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 23 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:35,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:06:35,965 INFO L93 Difference]: Finished difference Result 11873 states and 42843 transitions. [2021-10-08 16:06:35,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-10-08 16:06:35,966 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 23 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 16:06:35,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:06:36,000 INFO L225 Difference]: With dead ends: 11873 [2021-10-08 16:06:36,000 INFO L226 Difference]: Without dead ends: 11873 [2021-10-08 16:06:36,001 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1525 ImplicationChecksByTransitivity, 4707.5ms TimeCoverageRelationStatistics Valid=916, Invalid=5090, Unknown=0, NotChecked=0, Total=6006 [2021-10-08 16:06:36,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11873 states. [2021-10-08 16:06:36,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11873 to 8121. [2021-10-08 16:06:36,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8121 states, 8031 states have (on average 3.8893039472045823) internal successors, (31235), 8120 states have internal predecessors, (31235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:36,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8121 states to 8121 states and 31235 transitions. [2021-10-08 16:06:36,199 INFO L78 Accepts]: Start accepts. Automaton has 8121 states and 31235 transitions. Word has length 20 [2021-10-08 16:06:36,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:06:36,199 INFO L470 AbstractCegarLoop]: Abstraction has 8121 states and 31235 transitions. [2021-10-08 16:06:36,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 23 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:36,199 INFO L276 IsEmpty]: Start isEmpty. Operand 8121 states and 31235 transitions. [2021-10-08 16:06:36,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 16:06:36,204 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:06:36,204 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:06:36,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2021-10-08 16:06:36,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,72 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:06:36,405 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:06:36,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:06:36,406 INFO L82 PathProgramCache]: Analyzing trace with hash -147306338, now seen corresponding path program 2 times [2021-10-08 16:06:36,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:06:36,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289460922] [2021-10-08 16:06:36,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:06:36,407 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:06:36,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:06:36,985 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:06:36,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:06:36,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289460922] [2021-10-08 16:06:36,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289460922] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:06:36,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905912313] [2021-10-08 16:06:36,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:06:36,987 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:06:36,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:06:36,988 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:06:36,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2021-10-08 16:06:38,530 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:06:38,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:06:38,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 16:06:38,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:06:38,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-10-08 16:06:38,885 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:06:38,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905912313] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:06:38,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:06:38,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7] total 20 [2021-10-08 16:06:38,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202026390] [2021-10-08 16:06:38,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 16:06:38,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:06:38,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 16:06:38,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2021-10-08 16:06:38,887 INFO L87 Difference]: Start difference. First operand 8121 states and 31235 transitions. Second operand has 21 states, 20 states have (on average 1.85) internal successors, (37), 21 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:44,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:06:44,139 INFO L93 Difference]: Finished difference Result 13624 states and 47561 transitions. [2021-10-08 16:06:44,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-10-08 16:06:44,140 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.85) internal successors, (37), 21 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 16:06:44,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:06:44,178 INFO L225 Difference]: With dead ends: 13624 [2021-10-08 16:06:44,179 INFO L226 Difference]: Without dead ends: 13523 [2021-10-08 16:06:44,179 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1363 ImplicationChecksByTransitivity, 3633.0ms TimeCoverageRelationStatistics Valid=737, Invalid=4093, Unknown=0, NotChecked=0, Total=4830 [2021-10-08 16:06:44,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13523 states. [2021-10-08 16:06:44,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13523 to 8554. [2021-10-08 16:06:44,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8554 states, 8464 states have (on average 3.8819706994328924) internal successors, (32857), 8553 states have internal predecessors, (32857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:44,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8554 states to 8554 states and 32857 transitions. [2021-10-08 16:06:44,406 INFO L78 Accepts]: Start accepts. Automaton has 8554 states and 32857 transitions. Word has length 20 [2021-10-08 16:06:44,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:06:44,406 INFO L470 AbstractCegarLoop]: Abstraction has 8554 states and 32857 transitions. [2021-10-08 16:06:44,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.85) internal successors, (37), 21 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:44,406 INFO L276 IsEmpty]: Start isEmpty. Operand 8554 states and 32857 transitions. [2021-10-08 16:06:44,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 16:06:44,410 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:06:44,410 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:06:44,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2021-10-08 16:06:44,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2021-10-08 16:06:44,619 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:06:44,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:06:44,619 INFO L82 PathProgramCache]: Analyzing trace with hash -326801918, now seen corresponding path program 3 times [2021-10-08 16:06:44,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:06:44,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39964358] [2021-10-08 16:06:44,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:06:44,620 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:06:44,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:06:45,788 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:06:45,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:06:45,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39964358] [2021-10-08 16:06:45,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39964358] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:06:45,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275829445] [2021-10-08 16:06:45,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:06:45,789 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:06:45,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:06:45,791 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:06:45,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2021-10-08 16:06:47,507 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 16:06:47,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:06:47,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-08 16:06:47,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:06:48,295 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-08 16:06:48,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 30 [2021-10-08 16:06:48,327 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:06:48,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275829445] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:06:48,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:06:48,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 26 [2021-10-08 16:06:48,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267344819] [2021-10-08 16:06:48,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-08 16:06:48,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:06:48,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-08 16:06:48,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=662, Unknown=0, NotChecked=0, Total=756 [2021-10-08 16:06:48,329 INFO L87 Difference]: Start difference. First operand 8554 states and 32857 transitions. Second operand has 28 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 27 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:57,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:06:57,011 INFO L93 Difference]: Finished difference Result 12892 states and 45382 transitions. [2021-10-08 16:06:57,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-10-08 16:06:57,012 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 27 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 16:06:57,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:06:57,049 INFO L225 Difference]: With dead ends: 12892 [2021-10-08 16:06:57,049 INFO L226 Difference]: Without dead ends: 12712 [2021-10-08 16:06:57,050 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1795 ImplicationChecksByTransitivity, 7240.7ms TimeCoverageRelationStatistics Valid=1256, Invalid=5884, Unknown=0, NotChecked=0, Total=7140 [2021-10-08 16:06:57,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12712 states. [2021-10-08 16:06:57,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12712 to 8985. [2021-10-08 16:06:57,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8985 states, 8895 states have (on average 3.8263069139966275) internal successors, (34035), 8984 states have internal predecessors, (34035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:57,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8985 states to 8985 states and 34035 transitions. [2021-10-08 16:06:57,278 INFO L78 Accepts]: Start accepts. Automaton has 8985 states and 34035 transitions. Word has length 20 [2021-10-08 16:06:57,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:06:57,278 INFO L470 AbstractCegarLoop]: Abstraction has 8985 states and 34035 transitions. [2021-10-08 16:06:57,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 27 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:57,279 INFO L276 IsEmpty]: Start isEmpty. Operand 8985 states and 34035 transitions. [2021-10-08 16:06:57,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 16:06:57,283 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:06:57,283 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:06:57,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2021-10-08 16:06:57,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2021-10-08 16:06:57,490 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:06:57,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:06:57,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1310460178, now seen corresponding path program 4 times [2021-10-08 16:06:57,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:06:57,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404791465] [2021-10-08 16:06:57,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:06:57,491 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:06:57,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:06:58,012 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:06:58,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:06:58,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404791465] [2021-10-08 16:06:58,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404791465] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:06:58,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559121037] [2021-10-08 16:06:58,013 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:06:58,013 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:06:58,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:06:58,014 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:06:58,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2021-10-08 16:06:59,724 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:06:59,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:06:59,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-08 16:06:59,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:06:59,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 158 [2021-10-08 16:07:00,156 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:07:00,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2021-10-08 16:07:00,428 INFO L354 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2021-10-08 16:07:00,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2021-10-08 16:07:00,452 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:07:00,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559121037] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:07:00,453 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:07:00,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2021-10-08 16:07:00,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104576564] [2021-10-08 16:07:00,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-08 16:07:00,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:07:00,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-08 16:07:00,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=525, Unknown=0, NotChecked=0, Total=600 [2021-10-08 16:07:00,454 INFO L87 Difference]: Start difference. First operand 8985 states and 34035 transitions. Second operand has 25 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 24 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:03,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:07:03,045 INFO L93 Difference]: Finished difference Result 12315 states and 43325 transitions. [2021-10-08 16:07:03,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-08 16:07:03,046 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 24 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 16:07:03,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:07:03,134 INFO L225 Difference]: With dead ends: 12315 [2021-10-08 16:07:03,134 INFO L226 Difference]: Without dead ends: 12238 [2021-10-08 16:07:03,134 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 1363.3ms TimeCoverageRelationStatistics Valid=242, Invalid=1564, Unknown=0, NotChecked=0, Total=1806 [2021-10-08 16:07:03,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12238 states. [2021-10-08 16:07:03,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12238 to 9028. [2021-10-08 16:07:03,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9028 states, 8938 states have (on average 3.822555381517118) internal successors, (34166), 9027 states have internal predecessors, (34166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:03,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9028 states to 9028 states and 34166 transitions. [2021-10-08 16:07:03,358 INFO L78 Accepts]: Start accepts. Automaton has 9028 states and 34166 transitions. Word has length 20 [2021-10-08 16:07:03,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:07:03,358 INFO L470 AbstractCegarLoop]: Abstraction has 9028 states and 34166 transitions. [2021-10-08 16:07:03,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 24 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:03,358 INFO L276 IsEmpty]: Start isEmpty. Operand 9028 states and 34166 transitions. [2021-10-08 16:07:03,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 16:07:03,363 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:07:03,363 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:07:03,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2021-10-08 16:07:03,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,75 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:07:03,564 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:07:03,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:07:03,565 INFO L82 PathProgramCache]: Analyzing trace with hash -646918415, now seen corresponding path program 5 times [2021-10-08 16:07:03,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:07:03,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470882445] [2021-10-08 16:07:03,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:07:03,566 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:07:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:07:04,365 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:07:04,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:07:04,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470882445] [2021-10-08 16:07:04,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470882445] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:07:04,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586247996] [2021-10-08 16:07:04,366 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:07:04,366 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:07:04,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:07:04,368 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:07:04,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2021-10-08 16:07:06,021 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 16:07:06,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:07:06,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-08 16:07:06,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:07:06,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2021-10-08 16:07:06,394 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:07:06,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:07:06,525 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:07:06,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:07:06,904 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-10-08 16:07:06,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 117 treesize of output 84 [2021-10-08 16:07:07,107 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:07:07,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586247996] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:07:07,108 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:07:07,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 25 [2021-10-08 16:07:07,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258777040] [2021-10-08 16:07:07,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-08 16:07:07,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:07:07,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-08 16:07:07,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=576, Unknown=0, NotChecked=0, Total=650 [2021-10-08 16:07:07,110 INFO L87 Difference]: Start difference. First operand 9028 states and 34166 transitions. Second operand has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 25 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:13,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:07:13,314 INFO L93 Difference]: Finished difference Result 11512 states and 39946 transitions. [2021-10-08 16:07:13,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-08 16:07:13,315 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 25 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 16:07:13,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:07:13,348 INFO L225 Difference]: With dead ends: 11512 [2021-10-08 16:07:13,348 INFO L226 Difference]: Without dead ends: 11317 [2021-10-08 16:07:13,349 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 849 ImplicationChecksByTransitivity, 4405.4ms TimeCoverageRelationStatistics Valid=665, Invalid=3117, Unknown=0, NotChecked=0, Total=3782 [2021-10-08 16:07:13,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11317 states. [2021-10-08 16:07:13,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11317 to 6763. [2021-10-08 16:07:13,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6763 states, 6673 states have (on average 3.6628203206953396) internal successors, (24442), 6762 states have internal predecessors, (24442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:13,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6763 states to 6763 states and 24442 transitions. [2021-10-08 16:07:13,520 INFO L78 Accepts]: Start accepts. Automaton has 6763 states and 24442 transitions. Word has length 20 [2021-10-08 16:07:13,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:07:13,520 INFO L470 AbstractCegarLoop]: Abstraction has 6763 states and 24442 transitions. [2021-10-08 16:07:13,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 25 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:13,521 INFO L276 IsEmpty]: Start isEmpty. Operand 6763 states and 24442 transitions. [2021-10-08 16:07:13,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 16:07:13,524 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:07:13,524 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:07:13,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2021-10-08 16:07:13,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2021-10-08 16:07:13,725 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:07:13,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:07:13,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1887175888, now seen corresponding path program 3 times [2021-10-08 16:07:13,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:07:13,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339472749] [2021-10-08 16:07:13,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:07:13,728 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:07:13,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:07:14,423 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:07:14,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:07:14,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339472749] [2021-10-08 16:07:14,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339472749] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:07:14,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408013870] [2021-10-08 16:07:14,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:07:14,425 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:07:14,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:07:14,426 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:07:14,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2021-10-08 16:07:16,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-08 16:07:16,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:07:16,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 16:07:16,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:07:16,280 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:07:16,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2021-10-08 16:07:16,339 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-08 16:07:16,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408013870] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:07:16,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:07:16,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 18 [2021-10-08 16:07:16,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103298907] [2021-10-08 16:07:16,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 16:07:16,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:07:16,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 16:07:16,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2021-10-08 16:07:16,341 INFO L87 Difference]: Start difference. First operand 6763 states and 24442 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:16,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:07:16,591 INFO L93 Difference]: Finished difference Result 6894 states and 24763 transitions. [2021-10-08 16:07:16,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:07:16,591 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 16:07:16,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:07:16,616 INFO L225 Difference]: With dead ends: 6894 [2021-10-08 16:07:16,616 INFO L226 Difference]: Without dead ends: 6860 [2021-10-08 16:07:16,617 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 510.8ms TimeCoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2021-10-08 16:07:16,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6860 states. [2021-10-08 16:07:16,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6860 to 6691. [2021-10-08 16:07:16,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6691 states, 6601 states have (on average 3.673988789577337) internal successors, (24252), 6690 states have internal predecessors, (24252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:16,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6691 states to 6691 states and 24252 transitions. [2021-10-08 16:07:16,747 INFO L78 Accepts]: Start accepts. Automaton has 6691 states and 24252 transitions. Word has length 20 [2021-10-08 16:07:16,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:07:16,747 INFO L470 AbstractCegarLoop]: Abstraction has 6691 states and 24252 transitions. [2021-10-08 16:07:16,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:16,747 INFO L276 IsEmpty]: Start isEmpty. Operand 6691 states and 24252 transitions. [2021-10-08 16:07:16,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 16:07:16,750 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:07:16,750 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:07:16,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2021-10-08 16:07:16,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,77 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:07:16,951 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:07:16,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:07:16,952 INFO L82 PathProgramCache]: Analyzing trace with hash -15585680, now seen corresponding path program 1 times [2021-10-08 16:07:16,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:07:16,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877980735] [2021-10-08 16:07:16,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:07:16,953 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:07:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:07:17,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:07:17,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:07:17,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877980735] [2021-10-08 16:07:17,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877980735] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:07:17,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097564430] [2021-10-08 16:07:17,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:07:17,149 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:07:17,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:07:17,151 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:07:17,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2021-10-08 16:07:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:07:18,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:07:18,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:07:18,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:07:18,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097564430] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:07:18,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:07:18,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2021-10-08 16:07:18,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791768214] [2021-10-08 16:07:18,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:07:18,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:07:18,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:07:18,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-08 16:07:18,902 INFO L87 Difference]: Start difference. First operand 6691 states and 24252 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:19,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:07:19,032 INFO L93 Difference]: Finished difference Result 8086 states and 29851 transitions. [2021-10-08 16:07:19,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:07:19,032 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 16:07:19,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:07:19,055 INFO L225 Difference]: With dead ends: 8086 [2021-10-08 16:07:19,055 INFO L226 Difference]: Without dead ends: 8086 [2021-10-08 16:07:19,055 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 53.2ms TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-08 16:07:19,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8086 states. [2021-10-08 16:07:19,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8086 to 7392. [2021-10-08 16:07:19,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7392 states, 7302 states have (on average 3.7845795672418516) internal successors, (27635), 7391 states have internal predecessors, (27635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:19,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7392 states to 7392 states and 27635 transitions. [2021-10-08 16:07:19,209 INFO L78 Accepts]: Start accepts. Automaton has 7392 states and 27635 transitions. Word has length 20 [2021-10-08 16:07:19,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:07:19,210 INFO L470 AbstractCegarLoop]: Abstraction has 7392 states and 27635 transitions. [2021-10-08 16:07:19,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:19,210 INFO L276 IsEmpty]: Start isEmpty. Operand 7392 states and 27635 transitions. [2021-10-08 16:07:19,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 16:07:19,213 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:07:19,213 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:07:19,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2021-10-08 16:07:19,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,78 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:07:19,414 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:07:19,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:07:19,415 INFO L82 PathProgramCache]: Analyzing trace with hash -15585679, now seen corresponding path program 1 times [2021-10-08 16:07:19,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:07:19,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134638856] [2021-10-08 16:07:19,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:07:19,415 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:07:19,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:07:19,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:07:19,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:07:19,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134638856] [2021-10-08 16:07:19,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134638856] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:07:19,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696970578] [2021-10-08 16:07:19,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:07:19,593 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:07:19,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:07:19,596 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:07:19,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2021-10-08 16:07:21,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:07:21,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:07:21,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:07:21,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:07:21,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696970578] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:07:21,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:07:21,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2021-10-08 16:07:21,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898869883] [2021-10-08 16:07:21,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:07:21,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:07:21,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:07:21,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:07:21,487 INFO L87 Difference]: Start difference. First operand 7392 states and 27635 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:21,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:07:21,612 INFO L93 Difference]: Finished difference Result 8104 states and 29598 transitions. [2021-10-08 16:07:21,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:07:21,612 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 16:07:21,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:07:21,634 INFO L225 Difference]: With dead ends: 8104 [2021-10-08 16:07:21,634 INFO L226 Difference]: Without dead ends: 8104 [2021-10-08 16:07:21,634 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 72.0ms TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:07:21,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8104 states. [2021-10-08 16:07:21,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8104 to 7399. [2021-10-08 16:07:21,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7399 states, 7309 states have (on average 3.7434669585442606) internal successors, (27361), 7398 states have internal predecessors, (27361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:21,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7399 states to 7399 states and 27361 transitions. [2021-10-08 16:07:21,776 INFO L78 Accepts]: Start accepts. Automaton has 7399 states and 27361 transitions. Word has length 20 [2021-10-08 16:07:21,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:07:21,776 INFO L470 AbstractCegarLoop]: Abstraction has 7399 states and 27361 transitions. [2021-10-08 16:07:21,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:21,776 INFO L276 IsEmpty]: Start isEmpty. Operand 7399 states and 27361 transitions. [2021-10-08 16:07:21,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 16:07:21,779 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:07:21,779 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:07:21,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2021-10-08 16:07:21,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,79 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:07:21,980 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:07:21,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:07:21,981 INFO L82 PathProgramCache]: Analyzing trace with hash -15585678, now seen corresponding path program 1 times [2021-10-08 16:07:21,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:07:21,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041142173] [2021-10-08 16:07:21,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:07:21,982 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:07:22,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:07:22,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:07:22,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:07:22,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041142173] [2021-10-08 16:07:22,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041142173] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:07:22,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747491669] [2021-10-08 16:07:22,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:07:22,210 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:07:22,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:07:22,211 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:07:22,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2021-10-08 16:07:23,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:07:23,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-08 16:07:23,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:07:23,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-08 16:07:23,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-08 16:07:24,050 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-08 16:07:24,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-10-08 16:07:24,121 INFO L354 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2021-10-08 16:07:24,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 38 [2021-10-08 16:07:24,187 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:07:24,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-10-08 16:07:24,320 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:07:24,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-10-08 16:07:24,427 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:07:24,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-10-08 16:07:24,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:07:24,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747491669] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:07:24,721 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:07:24,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 18 [2021-10-08 16:07:24,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321458800] [2021-10-08 16:07:24,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 16:07:24,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:07:24,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 16:07:24,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-10-08 16:07:24,723 INFO L87 Difference]: Start difference. First operand 7399 states and 27361 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:27,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:07:27,314 INFO L93 Difference]: Finished difference Result 7784 states and 28049 transitions. [2021-10-08 16:07:27,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 16:07:27,314 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 16:07:27,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:07:27,335 INFO L225 Difference]: With dead ends: 7784 [2021-10-08 16:07:27,335 INFO L226 Difference]: Without dead ends: 7784 [2021-10-08 16:07:27,335 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1927.1ms TimeCoverageRelationStatistics Valid=337, Invalid=995, Unknown=0, NotChecked=0, Total=1332 [2021-10-08 16:07:27,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7784 states. [2021-10-08 16:07:27,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7784 to 7354. [2021-10-08 16:07:27,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7354 states, 7273 states have (on average 3.720885466794995) internal successors, (27062), 7353 states have internal predecessors, (27062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:27,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7354 states to 7354 states and 27062 transitions. [2021-10-08 16:07:27,477 INFO L78 Accepts]: Start accepts. Automaton has 7354 states and 27062 transitions. Word has length 20 [2021-10-08 16:07:27,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:07:27,477 INFO L470 AbstractCegarLoop]: Abstraction has 7354 states and 27062 transitions. [2021-10-08 16:07:27,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:27,477 INFO L276 IsEmpty]: Start isEmpty. Operand 7354 states and 27062 transitions. [2021-10-08 16:07:27,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 16:07:27,481 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:07:27,481 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:07:27,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2021-10-08 16:07:27,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,80 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:07:27,681 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:07:27,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:07:27,682 INFO L82 PathProgramCache]: Analyzing trace with hash 526872318, now seen corresponding path program 2 times [2021-10-08 16:07:27,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:07:27,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121060865] [2021-10-08 16:07:27,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:07:27,683 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:07:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:07:27,898 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:07:27,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:07:27,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121060865] [2021-10-08 16:07:27,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121060865] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:07:27,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115894577] [2021-10-08 16:07:27,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:07:27,899 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:07:27,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:07:27,902 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:07:27,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2021-10-08 16:07:29,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:07:29,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:07:29,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 16:07:29,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:07:29,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 41 [2021-10-08 16:07:30,050 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:07:30,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 32 [2021-10-08 16:07:30,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:07:30,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115894577] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:07:30,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:07:30,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 13 [2021-10-08 16:07:30,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597286954] [2021-10-08 16:07:30,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:07:30,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:07:30,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:07:30,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:07:30,076 INFO L87 Difference]: Start difference. First operand 7354 states and 27062 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:30,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:07:30,307 INFO L93 Difference]: Finished difference Result 7307 states and 26550 transitions. [2021-10-08 16:07:30,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 16:07:30,307 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 16:07:30,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:07:30,326 INFO L225 Difference]: With dead ends: 7307 [2021-10-08 16:07:30,326 INFO L226 Difference]: Without dead ends: 7307 [2021-10-08 16:07:30,327 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 244.3ms TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2021-10-08 16:07:30,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7307 states. [2021-10-08 16:07:30,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7307 to 7084. [2021-10-08 16:07:30,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7084 states, 7003 states have (on average 3.704555190632586) internal successors, (25943), 7083 states have internal predecessors, (25943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:30,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7084 states to 7084 states and 25943 transitions. [2021-10-08 16:07:30,462 INFO L78 Accepts]: Start accepts. Automaton has 7084 states and 25943 transitions. Word has length 20 [2021-10-08 16:07:30,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:07:30,462 INFO L470 AbstractCegarLoop]: Abstraction has 7084 states and 25943 transitions. [2021-10-08 16:07:30,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:30,462 INFO L276 IsEmpty]: Start isEmpty. Operand 7084 states and 25943 transitions. [2021-10-08 16:07:30,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 16:07:30,466 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:07:30,466 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:07:30,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2021-10-08 16:07:30,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,81 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:07:30,666 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:07:30,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:07:30,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1336507387, now seen corresponding path program 10 times [2021-10-08 16:07:30,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:07:30,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816446409] [2021-10-08 16:07:30,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:07:30,668 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:07:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:07:31,846 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:07:31,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:07:31,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816446409] [2021-10-08 16:07:31,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816446409] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:07:31,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884907516] [2021-10-08 16:07:31,847 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:07:31,847 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:07:31,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:07:31,849 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:07:31,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2021-10-08 16:07:33,638 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:07:33,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:07:33,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-08 16:07:33,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:07:33,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2021-10-08 16:07:33,936 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:07:33,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:07:34,634 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-10-08 16:07:34,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 18 [2021-10-08 16:07:34,667 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:07:34,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884907516] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:07:34,667 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:07:34,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 31 [2021-10-08 16:07:34,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806049176] [2021-10-08 16:07:34,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-10-08 16:07:34,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:07:34,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-10-08 16:07:34,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=942, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 16:07:34,669 INFO L87 Difference]: Start difference. First operand 7084 states and 25943 transitions. Second operand has 33 states, 32 states have (on average 1.3125) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:41,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:07:41,190 INFO L93 Difference]: Finished difference Result 9334 states and 32236 transitions. [2021-10-08 16:07:41,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-10-08 16:07:41,190 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.3125) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 16:07:41,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:07:41,213 INFO L225 Difference]: With dead ends: 9334 [2021-10-08 16:07:41,213 INFO L226 Difference]: Without dead ends: 9305 [2021-10-08 16:07:41,214 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2038 ImplicationChecksByTransitivity, 5486.9ms TimeCoverageRelationStatistics Valid=703, Invalid=6607, Unknown=0, NotChecked=0, Total=7310 [2021-10-08 16:07:41,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9305 states. [2021-10-08 16:07:41,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9305 to 7227. [2021-10-08 16:07:41,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7227 states, 7146 states have (on average 3.687937307584663) internal successors, (26354), 7226 states have internal predecessors, (26354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:41,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7227 states to 7227 states and 26354 transitions. [2021-10-08 16:07:41,370 INFO L78 Accepts]: Start accepts. Automaton has 7227 states and 26354 transitions. Word has length 21 [2021-10-08 16:07:41,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:07:41,370 INFO L470 AbstractCegarLoop]: Abstraction has 7227 states and 26354 transitions. [2021-10-08 16:07:41,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.3125) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:41,370 INFO L276 IsEmpty]: Start isEmpty. Operand 7227 states and 26354 transitions. [2021-10-08 16:07:41,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 16:07:41,373 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:07:41,374 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:07:41,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2021-10-08 16:07:41,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2021-10-08 16:07:41,574 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:07:41,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:07:41,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1219898239, now seen corresponding path program 11 times [2021-10-08 16:07:41,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:07:41,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675697763] [2021-10-08 16:07:41,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:07:41,576 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:07:41,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:07:42,633 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:07:42,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:07:42,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675697763] [2021-10-08 16:07:42,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675697763] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:07:42,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002177646] [2021-10-08 16:07:42,634 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:07:42,634 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:07:42,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:07:42,636 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:07:42,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2021-10-08 16:07:44,424 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 16:07:44,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:07:44,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-08 16:07:44,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:07:44,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2021-10-08 16:07:44,663 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:07:44,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:07:45,381 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-10-08 16:07:45,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 18 [2021-10-08 16:07:45,420 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-08 16:07:45,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002177646] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:07:45,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:07:45,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 28 [2021-10-08 16:07:45,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332389047] [2021-10-08 16:07:45,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-08 16:07:45,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:07:45,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-08 16:07:45,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=771, Unknown=0, NotChecked=0, Total=870 [2021-10-08 16:07:45,423 INFO L87 Difference]: Start difference. First operand 7227 states and 26354 transitions. Second operand has 30 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 29 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:54,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:07:54,002 INFO L93 Difference]: Finished difference Result 10484 states and 36279 transitions. [2021-10-08 16:07:54,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-10-08 16:07:54,002 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 29 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 16:07:54,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:07:54,032 INFO L225 Difference]: With dead ends: 10484 [2021-10-08 16:07:54,033 INFO L226 Difference]: Without dead ends: 10455 [2021-10-08 16:07:54,033 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2334 ImplicationChecksByTransitivity, 6827.4ms TimeCoverageRelationStatistics Valid=941, Invalid=7431, Unknown=0, NotChecked=0, Total=8372 [2021-10-08 16:07:54,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10455 states. [2021-10-08 16:07:54,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10455 to 7247. [2021-10-08 16:07:54,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7247 states, 7166 states have (on average 3.685040468880826) internal successors, (26407), 7246 states have internal predecessors, (26407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:54,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7247 states to 7247 states and 26407 transitions. [2021-10-08 16:07:54,307 INFO L78 Accepts]: Start accepts. Automaton has 7247 states and 26407 transitions. Word has length 21 [2021-10-08 16:07:54,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:07:54,307 INFO L470 AbstractCegarLoop]: Abstraction has 7247 states and 26407 transitions. [2021-10-08 16:07:54,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 29 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:54,307 INFO L276 IsEmpty]: Start isEmpty. Operand 7247 states and 26407 transitions. [2021-10-08 16:07:54,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 16:07:54,312 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:07:54,312 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:07:54,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2021-10-08 16:07:54,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,83 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:07:54,525 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:07:54,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:07:54,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1397238763, now seen corresponding path program 12 times [2021-10-08 16:07:54,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:07:54,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587490801] [2021-10-08 16:07:54,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:07:54,530 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:07:54,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:07:54,826 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-08 16:07:54,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:07:54,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587490801] [2021-10-08 16:07:54,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587490801] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:07:54,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029173835] [2021-10-08 16:07:54,827 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:07:54,827 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:07:54,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:07:54,828 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:07:54,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2021-10-08 16:07:56,705 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 16:07:56,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:07:56,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-08 16:07:56,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:07:56,870 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:07:56,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:07:57,489 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-10-08 16:07:57,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 18 [2021-10-08 16:07:57,513 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-08 16:07:57,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029173835] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:07:57,513 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:07:57,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 23 [2021-10-08 16:07:57,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572713886] [2021-10-08 16:07:57,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-08 16:07:57,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:07:57,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-08 16:07:57,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2021-10-08 16:07:57,515 INFO L87 Difference]: Start difference. First operand 7247 states and 26407 transitions. Second operand has 25 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:01,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:08:01,893 INFO L93 Difference]: Finished difference Result 14188 states and 49536 transitions. [2021-10-08 16:08:01,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-08 16:08:01,893 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 16:08:01,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:08:01,933 INFO L225 Difference]: With dead ends: 14188 [2021-10-08 16:08:01,933 INFO L226 Difference]: Without dead ends: 13939 [2021-10-08 16:08:01,933 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1139 ImplicationChecksByTransitivity, 2358.7ms TimeCoverageRelationStatistics Valid=685, Invalid=3347, Unknown=0, NotChecked=0, Total=4032 [2021-10-08 16:08:01,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13939 states. [2021-10-08 16:08:02,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13939 to 6972. [2021-10-08 16:08:02,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6972 states, 6891 states have (on average 3.714410100130605) internal successors, (25596), 6971 states have internal predecessors, (25596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:02,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6972 states to 6972 states and 25596 transitions. [2021-10-08 16:08:02,142 INFO L78 Accepts]: Start accepts. Automaton has 6972 states and 25596 transitions. Word has length 21 [2021-10-08 16:08:02,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:08:02,142 INFO L470 AbstractCegarLoop]: Abstraction has 6972 states and 25596 transitions. [2021-10-08 16:08:02,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:02,143 INFO L276 IsEmpty]: Start isEmpty. Operand 6972 states and 25596 transitions. [2021-10-08 16:08:02,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 16:08:02,146 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:08:02,146 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:08:02,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2021-10-08 16:08:02,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2021-10-08 16:08:02,347 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:08:02,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:08:02,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1014086567, now seen corresponding path program 1 times [2021-10-08 16:08:02,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:08:02,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135409799] [2021-10-08 16:08:02,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:08:02,348 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:08:02,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:08:02,742 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:08:02,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:08:02,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135409799] [2021-10-08 16:08:02,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135409799] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:08:02,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053937177] [2021-10-08 16:08:02,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:08:02,743 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:08:02,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:08:02,746 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:08:02,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2021-10-08 16:08:04,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:08:04,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 16:08:04,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:08:04,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-10-08 16:08:04,899 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:08:04,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053937177] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:08:04,900 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:08:04,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 20 [2021-10-08 16:08:04,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723557697] [2021-10-08 16:08:04,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 16:08:04,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:08:04,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 16:08:04,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2021-10-08 16:08:04,902 INFO L87 Difference]: Start difference. First operand 6972 states and 25596 transitions. Second operand has 21 states, 20 states have (on average 1.95) internal successors, (39), 21 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:06,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:08:06,986 INFO L93 Difference]: Finished difference Result 11315 states and 40745 transitions. [2021-10-08 16:08:06,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-08 16:08:06,986 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.95) internal successors, (39), 21 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 16:08:06,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:08:07,019 INFO L225 Difference]: With dead ends: 11315 [2021-10-08 16:08:07,019 INFO L226 Difference]: Without dead ends: 11207 [2021-10-08 16:08:07,019 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 1355.9ms TimeCoverageRelationStatistics Valid=375, Invalid=2595, Unknown=0, NotChecked=0, Total=2970 [2021-10-08 16:08:07,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11207 states. [2021-10-08 16:08:07,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11207 to 6946. [2021-10-08 16:08:07,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6946 states, 6865 states have (on average 3.7149308084486528) internal successors, (25503), 6945 states have internal predecessors, (25503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:07,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6946 states to 6946 states and 25503 transitions. [2021-10-08 16:08:07,178 INFO L78 Accepts]: Start accepts. Automaton has 6946 states and 25503 transitions. Word has length 21 [2021-10-08 16:08:07,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:08:07,178 INFO L470 AbstractCegarLoop]: Abstraction has 6946 states and 25503 transitions. [2021-10-08 16:08:07,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.95) internal successors, (39), 21 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:07,178 INFO L276 IsEmpty]: Start isEmpty. Operand 6946 states and 25503 transitions. [2021-10-08 16:08:07,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 16:08:07,181 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:08:07,181 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:08:07,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2021-10-08 16:08:07,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2021-10-08 16:08:07,382 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:08:07,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:08:07,382 INFO L82 PathProgramCache]: Analyzing trace with hash 834446836, now seen corresponding path program 2 times [2021-10-08 16:08:07,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:08:07,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148253524] [2021-10-08 16:08:07,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:08:07,383 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:08:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:08:08,502 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:08:08,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:08:08,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148253524] [2021-10-08 16:08:08,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148253524] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:08:08,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923638972] [2021-10-08 16:08:08,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:08:08,503 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:08:08,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:08:08,505 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:08:08,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2021-10-08 16:08:10,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:08:10,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:08:10,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 16:08:10,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:08:10,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-10-08 16:08:10,789 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 16:08:10,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923638972] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:08:10,790 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:08:10,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 24 [2021-10-08 16:08:10,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884979966] [2021-10-08 16:08:10,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-08 16:08:10,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:08:10,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-08 16:08:10,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-10-08 16:08:10,792 INFO L87 Difference]: Start difference. First operand 6946 states and 25503 transitions. Second operand has 25 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 25 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:17,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:08:17,594 INFO L93 Difference]: Finished difference Result 14219 states and 50497 transitions. [2021-10-08 16:08:17,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-10-08 16:08:17,594 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 25 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 16:08:17,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:08:17,636 INFO L225 Difference]: With dead ends: 14219 [2021-10-08 16:08:17,636 INFO L226 Difference]: Without dead ends: 14202 [2021-10-08 16:08:17,637 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3063 ImplicationChecksByTransitivity, 5361.3ms TimeCoverageRelationStatistics Valid=825, Invalid=9075, Unknown=0, NotChecked=0, Total=9900 [2021-10-08 16:08:17,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14202 states. [2021-10-08 16:08:17,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14202 to 6825. [2021-10-08 16:08:17,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6825 states, 6740 states have (on average 3.6746290801186943) internal successors, (24767), 6824 states have internal predecessors, (24767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:17,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6825 states to 6825 states and 24767 transitions. [2021-10-08 16:08:17,833 INFO L78 Accepts]: Start accepts. Automaton has 6825 states and 24767 transitions. Word has length 21 [2021-10-08 16:08:17,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:08:17,833 INFO L470 AbstractCegarLoop]: Abstraction has 6825 states and 24767 transitions. [2021-10-08 16:08:17,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 25 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:17,833 INFO L276 IsEmpty]: Start isEmpty. Operand 6825 states and 24767 transitions. [2021-10-08 16:08:17,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 16:08:17,836 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:08:17,836 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:08:17,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2021-10-08 16:08:18,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,86 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:08:18,037 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:08:18,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:08:18,038 INFO L82 PathProgramCache]: Analyzing trace with hash 834446837, now seen corresponding path program 2 times [2021-10-08 16:08:18,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:08:18,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829299514] [2021-10-08 16:08:18,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:08:18,039 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:08:18,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:08:18,550 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:08:18,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:08:18,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829299514] [2021-10-08 16:08:18,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829299514] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:08:18,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039118576] [2021-10-08 16:08:18,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:08:18,551 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:08:18,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:08:18,552 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:08:18,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2021-10-08 16:08:20,491 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:08:20,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:08:20,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 16:08:20,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:08:20,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-10-08 16:08:20,890 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 16:08:20,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039118576] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:08:20,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:08:20,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 21 [2021-10-08 16:08:20,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273933647] [2021-10-08 16:08:20,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 16:08:20,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:08:20,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 16:08:20,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2021-10-08 16:08:20,892 INFO L87 Difference]: Start difference. First operand 6825 states and 24767 transitions. Second operand has 22 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 22 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:26,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:08:26,346 INFO L93 Difference]: Finished difference Result 20846 states and 73571 transitions. [2021-10-08 16:08:26,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-10-08 16:08:26,347 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 22 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 16:08:26,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:08:26,411 INFO L225 Difference]: With dead ends: 20846 [2021-10-08 16:08:26,411 INFO L226 Difference]: Without dead ends: 20846 [2021-10-08 16:08:26,412 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2303 ImplicationChecksByTransitivity, 4428.9ms TimeCoverageRelationStatistics Valid=805, Invalid=6677, Unknown=0, NotChecked=0, Total=7482 [2021-10-08 16:08:26,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20846 states. [2021-10-08 16:08:26,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20846 to 6702. [2021-10-08 16:08:26,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6702 states, 6617 states have (on average 3.675532718754723) internal successors, (24321), 6701 states have internal predecessors, (24321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:26,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6702 states to 6702 states and 24321 transitions. [2021-10-08 16:08:26,664 INFO L78 Accepts]: Start accepts. Automaton has 6702 states and 24321 transitions. Word has length 21 [2021-10-08 16:08:26,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:08:26,664 INFO L470 AbstractCegarLoop]: Abstraction has 6702 states and 24321 transitions. [2021-10-08 16:08:26,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 22 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:26,664 INFO L276 IsEmpty]: Start isEmpty. Operand 6702 states and 24321 transitions. [2021-10-08 16:08:26,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 16:08:26,667 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:08:26,667 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:08:26,698 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2021-10-08 16:08:26,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,87 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:08:26,868 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:08:26,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:08:26,869 INFO L82 PathProgramCache]: Analyzing trace with hash 834446976, now seen corresponding path program 5 times [2021-10-08 16:08:26,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:08:26,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740080872] [2021-10-08 16:08:26,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:08:26,870 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:08:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:08:27,539 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:08:27,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:08:27,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740080872] [2021-10-08 16:08:27,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740080872] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:08:27,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875343653] [2021-10-08 16:08:27,540 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:08:27,540 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:08:27,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:08:27,542 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:08:27,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2021-10-08 16:08:29,449 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 16:08:29,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:08:29,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-08 16:08:29,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:08:29,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-10-08 16:08:29,843 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 16:08:29,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875343653] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:08:29,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:08:29,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 23 [2021-10-08 16:08:29,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470453844] [2021-10-08 16:08:29,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-08 16:08:29,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:08:29,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-08 16:08:29,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2021-10-08 16:08:29,845 INFO L87 Difference]: Start difference. First operand 6702 states and 24321 transitions. Second operand has 24 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 24 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:37,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:08:37,859 INFO L93 Difference]: Finished difference Result 30250 states and 107061 transitions. [2021-10-08 16:08:37,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-10-08 16:08:37,859 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 24 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 16:08:37,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:08:37,970 INFO L225 Difference]: With dead ends: 30250 [2021-10-08 16:08:37,970 INFO L226 Difference]: Without dead ends: 30006 [2021-10-08 16:08:37,971 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3682 ImplicationChecksByTransitivity, 6243.0ms TimeCoverageRelationStatistics Valid=1386, Invalid=9744, Unknown=0, NotChecked=0, Total=11130 [2021-10-08 16:08:38,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30006 states. [2021-10-08 16:08:38,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30006 to 8336. [2021-10-08 16:08:38,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8336 states, 8251 states have (on average 3.9046176221064113) internal successors, (32217), 8335 states have internal predecessors, (32217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:38,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8336 states to 8336 states and 32217 transitions. [2021-10-08 16:08:38,386 INFO L78 Accepts]: Start accepts. Automaton has 8336 states and 32217 transitions. Word has length 21 [2021-10-08 16:08:38,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:08:38,386 INFO L470 AbstractCegarLoop]: Abstraction has 8336 states and 32217 transitions. [2021-10-08 16:08:38,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 24 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:38,386 INFO L276 IsEmpty]: Start isEmpty. Operand 8336 states and 32217 transitions. [2021-10-08 16:08:38,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 16:08:38,390 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:08:38,390 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:08:38,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2021-10-08 16:08:38,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2021-10-08 16:08:38,590 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:08:38,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:08:38,591 INFO L82 PathProgramCache]: Analyzing trace with hash 834591126, now seen corresponding path program 6 times [2021-10-08 16:08:38,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:08:38,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066375972] [2021-10-08 16:08:38,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:08:38,592 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:08:38,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:08:39,404 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:08:39,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:08:39,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066375972] [2021-10-08 16:08:39,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066375972] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:08:39,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099380279] [2021-10-08 16:08:39,405 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:08:39,405 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:08:39,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:08:39,407 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:08:39,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2021-10-08 16:08:41,421 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 16:08:41,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:08:41,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-08 16:08:41,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:08:41,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-10-08 16:08:41,811 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 16:08:41,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099380279] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:08:41,811 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:08:41,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 24 [2021-10-08 16:08:41,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958575324] [2021-10-08 16:08:41,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-08 16:08:41,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:08:41,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-08 16:08:41,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2021-10-08 16:08:41,813 INFO L87 Difference]: Start difference. First operand 8336 states and 32217 transitions. Second operand has 25 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 25 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:50,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:08:50,845 INFO L93 Difference]: Finished difference Result 29382 states and 103201 transitions. [2021-10-08 16:08:50,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-10-08 16:08:50,845 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 25 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 16:08:50,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:08:50,953 INFO L225 Difference]: With dead ends: 29382 [2021-10-08 16:08:50,954 INFO L226 Difference]: Without dead ends: 29226 [2021-10-08 16:08:50,955 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5896 ImplicationChecksByTransitivity, 7113.8ms TimeCoverageRelationStatistics Valid=2059, Invalid=14453, Unknown=0, NotChecked=0, Total=16512 [2021-10-08 16:08:50,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29226 states. [2021-10-08 16:08:51,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29226 to 8329. [2021-10-08 16:08:51,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8329 states, 8244 states have (on average 3.902717127607957) internal successors, (32174), 8328 states have internal predecessors, (32174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:51,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8329 states to 8329 states and 32174 transitions. [2021-10-08 16:08:51,512 INFO L78 Accepts]: Start accepts. Automaton has 8329 states and 32174 transitions. Word has length 21 [2021-10-08 16:08:51,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:08:51,513 INFO L470 AbstractCegarLoop]: Abstraction has 8329 states and 32174 transitions. [2021-10-08 16:08:51,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 25 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:51,513 INFO L276 IsEmpty]: Start isEmpty. Operand 8329 states and 32174 transitions. [2021-10-08 16:08:51,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 16:08:51,516 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:08:51,516 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:08:51,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2021-10-08 16:08:51,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102,89 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:08:51,717 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:08:51,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:08:51,718 INFO L82 PathProgramCache]: Analyzing trace with hash -149067274, now seen corresponding path program 3 times [2021-10-08 16:08:51,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:08:51,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428672825] [2021-10-08 16:08:51,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:08:51,719 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:08:51,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:08:52,221 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:08:52,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:08:52,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428672825] [2021-10-08 16:08:52,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428672825] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:08:52,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448840658] [2021-10-08 16:08:52,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:08:52,222 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:08:52,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:08:52,223 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:08:52,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2021-10-08 16:08:54,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 16:08:54,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:08:54,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 16:08:54,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:08:54,591 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-08 16:08:54,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-10-08 16:08:54,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-10-08 16:08:54,719 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-08 16:08:54,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448840658] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:08:54,719 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:08:54,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 22 [2021-10-08 16:08:54,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687881399] [2021-10-08 16:08:54,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-08 16:08:54,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:08:54,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-08 16:08:54,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2021-10-08 16:08:54,721 INFO L87 Difference]: Start difference. First operand 8329 states and 32174 transitions. Second operand has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:56,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:08:56,292 INFO L93 Difference]: Finished difference Result 12212 states and 45378 transitions. [2021-10-08 16:08:56,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-08 16:08:56,292 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 16:08:56,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:08:56,329 INFO L225 Difference]: With dead ends: 12212 [2021-10-08 16:08:56,330 INFO L226 Difference]: Without dead ends: 12208 [2021-10-08 16:08:56,330 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 1196.4ms TimeCoverageRelationStatistics Valid=197, Invalid=1363, Unknown=0, NotChecked=0, Total=1560 [2021-10-08 16:08:56,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12208 states. [2021-10-08 16:08:56,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12208 to 8385. [2021-10-08 16:08:56,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8385 states, 8300 states have (on average 3.903132530120482) internal successors, (32396), 8384 states have internal predecessors, (32396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:56,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8385 states to 8385 states and 32396 transitions. [2021-10-08 16:08:56,535 INFO L78 Accepts]: Start accepts. Automaton has 8385 states and 32396 transitions. Word has length 21 [2021-10-08 16:08:56,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:08:56,536 INFO L470 AbstractCegarLoop]: Abstraction has 8385 states and 32396 transitions. [2021-10-08 16:08:56,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:56,536 INFO L276 IsEmpty]: Start isEmpty. Operand 8385 states and 32396 transitions. [2021-10-08 16:08:56,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 16:08:56,539 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:08:56,539 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:08:56,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2021-10-08 16:08:56,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2021-10-08 16:08:56,740 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:08:56,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:08:56,741 INFO L82 PathProgramCache]: Analyzing trace with hash -149067134, now seen corresponding path program 7 times [2021-10-08 16:08:56,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:08:56,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306921685] [2021-10-08 16:08:56,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:08:56,742 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:08:56,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:08:57,590 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:08:57,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:08:57,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306921685] [2021-10-08 16:08:57,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306921685] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:08:57,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214144481] [2021-10-08 16:08:57,591 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:08:57,591 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:08:57,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:08:57,592 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:08:57,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2021-10-08 16:08:59,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:08:59,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-08 16:08:59,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:08:59,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2021-10-08 16:09:00,213 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-08 16:09:00,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:09:00,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-10-08 16:09:00,448 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:09:00,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214144481] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:09:00,449 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:09:00,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11] total 28 [2021-10-08 16:09:00,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691178789] [2021-10-08 16:09:00,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-08 16:09:00,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:09:00,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-08 16:09:00,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2021-10-08 16:09:00,451 INFO L87 Difference]: Start difference. First operand 8385 states and 32396 transitions. Second operand has 30 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 29 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:06,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:09:06,019 INFO L93 Difference]: Finished difference Result 18016 states and 68533 transitions. [2021-10-08 16:09:06,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-08 16:09:06,019 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 29 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 16:09:06,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:09:06,080 INFO L225 Difference]: With dead ends: 18016 [2021-10-08 16:09:06,081 INFO L226 Difference]: Without dead ends: 17998 [2021-10-08 16:09:06,081 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1091 ImplicationChecksByTransitivity, 4242.0ms TimeCoverageRelationStatistics Valid=555, Invalid=4415, Unknown=0, NotChecked=0, Total=4970 [2021-10-08 16:09:06,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17998 states. [2021-10-08 16:09:06,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17998 to 8328. [2021-10-08 16:09:06,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8328 states, 8243 states have (on average 3.9030692708965185) internal successors, (32173), 8327 states have internal predecessors, (32173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:06,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8328 states to 8328 states and 32173 transitions. [2021-10-08 16:09:06,339 INFO L78 Accepts]: Start accepts. Automaton has 8328 states and 32173 transitions. Word has length 21 [2021-10-08 16:09:06,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:09:06,339 INFO L470 AbstractCegarLoop]: Abstraction has 8328 states and 32173 transitions. [2021-10-08 16:09:06,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 29 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:06,340 INFO L276 IsEmpty]: Start isEmpty. Operand 8328 states and 32173 transitions. [2021-10-08 16:09:06,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 16:09:06,343 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:09:06,343 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:09:06,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2021-10-08 16:09:06,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2021-10-08 16:09:06,549 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:09:06,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:09:06,550 INFO L82 PathProgramCache]: Analyzing trace with hash 514474489, now seen corresponding path program 2 times [2021-10-08 16:09:06,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:09:06,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323877742] [2021-10-08 16:09:06,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:09:06,551 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:09:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:09:06,863 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-08 16:09:06,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:09:06,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323877742] [2021-10-08 16:09:06,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323877742] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:09:06,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300190640] [2021-10-08 16:09:06,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:09:06,864 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:09:06,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:09:06,866 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:09:06,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2021-10-08 16:09:08,828 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:09:08,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:09:08,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-08 16:09:08,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:09:08,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:09:08,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 45 [2021-10-08 16:09:09,051 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:09:09,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:09:09,131 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:09:09,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:09:09,645 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-10-08 16:09:09,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 18 [2021-10-08 16:09:09,669 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-08 16:09:09,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300190640] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:09:09,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:09:09,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 23 [2021-10-08 16:09:09,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762707244] [2021-10-08 16:09:09,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-08 16:09:09,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:09:09,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-08 16:09:09,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2021-10-08 16:09:09,671 INFO L87 Difference]: Start difference. First operand 8328 states and 32173 transitions. Second operand has 25 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 24 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:12,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:09:12,468 INFO L93 Difference]: Finished difference Result 10995 states and 40619 transitions. [2021-10-08 16:09:12,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 16:09:12,469 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 24 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 16:09:12,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:09:12,501 INFO L225 Difference]: With dead ends: 10995 [2021-10-08 16:09:12,502 INFO L226 Difference]: Without dead ends: 10985 [2021-10-08 16:09:12,502 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 1574.5ms TimeCoverageRelationStatistics Valid=313, Invalid=1757, Unknown=0, NotChecked=0, Total=2070 [2021-10-08 16:09:12,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10985 states. [2021-10-08 16:09:12,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10985 to 7573. [2021-10-08 16:09:12,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7573 states, 7488 states have (on average 3.9107905982905984) internal successors, (29284), 7572 states have internal predecessors, (29284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:12,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7573 states to 7573 states and 29284 transitions. [2021-10-08 16:09:12,680 INFO L78 Accepts]: Start accepts. Automaton has 7573 states and 29284 transitions. Word has length 21 [2021-10-08 16:09:12,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:09:12,680 INFO L470 AbstractCegarLoop]: Abstraction has 7573 states and 29284 transitions. [2021-10-08 16:09:12,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 24 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:12,680 INFO L276 IsEmpty]: Start isEmpty. Operand 7573 states and 29284 transitions. [2021-10-08 16:09:12,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 16:09:12,684 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:09:12,684 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:09:12,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2021-10-08 16:09:12,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,92 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:09:12,898 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:09:12,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:09:12,899 INFO L82 PathProgramCache]: Analyzing trace with hash 514474629, now seen corresponding path program 6 times [2021-10-08 16:09:12,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:09:12,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448847848] [2021-10-08 16:09:12,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:09:12,900 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:09:12,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:09:14,532 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:09:14,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:09:14,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448847848] [2021-10-08 16:09:14,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448847848] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:09:14,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136757796] [2021-10-08 16:09:14,533 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:09:14,533 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:09:14,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:09:14,534 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:09:14,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2021-10-08 16:09:16,539 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 16:09:16,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:09:16,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-08 16:09:16,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:09:16,803 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:09:16,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:09:16,948 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:09:16,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:09:17,579 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-10-08 16:09:17,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 18 [2021-10-08 16:09:17,618 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-08 16:09:17,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136757796] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:09:17,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:09:17,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12] total 29 [2021-10-08 16:09:17,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373113717] [2021-10-08 16:09:17,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-08 16:09:17,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:09:17,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-08 16:09:17,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=850, Unknown=0, NotChecked=0, Total=930 [2021-10-08 16:09:17,620 INFO L87 Difference]: Start difference. First operand 7573 states and 29284 transitions. Second operand has 31 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 30 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:31,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:09:31,463 INFO L93 Difference]: Finished difference Result 14785 states and 53502 transitions. [2021-10-08 16:09:31,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-10-08 16:09:31,463 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 30 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 16:09:31,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:09:31,508 INFO L225 Difference]: With dead ends: 14785 [2021-10-08 16:09:31,508 INFO L226 Difference]: Without dead ends: 14668 [2021-10-08 16:09:31,509 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3545 ImplicationChecksByTransitivity, 11092.0ms TimeCoverageRelationStatistics Valid=1301, Invalid=10689, Unknown=0, NotChecked=0, Total=11990 [2021-10-08 16:09:31,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14668 states. [2021-10-08 16:09:31,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14668 to 7755. [2021-10-08 16:09:31,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7755 states, 7670 states have (on average 3.888657105606258) internal successors, (29826), 7754 states have internal predecessors, (29826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:31,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7755 states to 7755 states and 29826 transitions. [2021-10-08 16:09:31,729 INFO L78 Accepts]: Start accepts. Automaton has 7755 states and 29826 transitions. Word has length 21 [2021-10-08 16:09:31,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:09:31,729 INFO L470 AbstractCegarLoop]: Abstraction has 7755 states and 29826 transitions. [2021-10-08 16:09:31,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 30 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:31,729 INFO L276 IsEmpty]: Start isEmpty. Operand 7755 states and 29826 transitions. [2021-10-08 16:09:31,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 16:09:31,732 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:09:31,733 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:09:31,765 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2021-10-08 16:09:31,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2021-10-08 16:09:31,933 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:09:31,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:09:31,934 INFO L82 PathProgramCache]: Analyzing trace with hash -884933115, now seen corresponding path program 7 times [2021-10-08 16:09:31,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:09:31,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984657904] [2021-10-08 16:09:31,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:09:31,935 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:09:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:09:32,235 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-08 16:09:32,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:09:32,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984657904] [2021-10-08 16:09:32,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984657904] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:09:32,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762767909] [2021-10-08 16:09:32,236 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:09:32,236 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:09:32,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:09:32,237 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:09:32,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2021-10-08 16:09:34,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:09:34,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 16:09:34,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:09:34,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 83 [2021-10-08 16:09:34,635 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:09:34,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:09:34,694 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:09:34,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:09:35,287 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-10-08 16:09:35,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 18 [2021-10-08 16:09:35,311 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-08 16:09:35,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762767909] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:09:35,312 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:09:35,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-08 16:09:35,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979860139] [2021-10-08 16:09:35,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-08 16:09:35,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:09:35,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-08 16:09:35,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2021-10-08 16:09:35,314 INFO L87 Difference]: Start difference. First operand 7755 states and 29826 transitions. Second operand has 24 states, 23 states have (on average 1.434782608695652) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:38,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:09:38,345 INFO L93 Difference]: Finished difference Result 10233 states and 37803 transitions. [2021-10-08 16:09:38,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-08 16:09:38,346 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.434782608695652) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 16:09:38,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:09:38,406 INFO L225 Difference]: With dead ends: 10233 [2021-10-08 16:09:38,407 INFO L226 Difference]: Without dead ends: 10062 [2021-10-08 16:09:38,407 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 2286.1ms TimeCoverageRelationStatistics Valid=467, Invalid=2185, Unknown=0, NotChecked=0, Total=2652 [2021-10-08 16:09:38,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10062 states. [2021-10-08 16:09:38,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10062 to 7399. [2021-10-08 16:09:38,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7399 states, 7314 states have (on average 3.9458572600492205) internal successors, (28860), 7398 states have internal predecessors, (28860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:38,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7399 states to 7399 states and 28860 transitions. [2021-10-08 16:09:38,673 INFO L78 Accepts]: Start accepts. Automaton has 7399 states and 28860 transitions. Word has length 21 [2021-10-08 16:09:38,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:09:38,673 INFO L470 AbstractCegarLoop]: Abstraction has 7399 states and 28860 transitions. [2021-10-08 16:09:38,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.434782608695652) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:38,673 INFO L276 IsEmpty]: Start isEmpty. Operand 7399 states and 28860 transitions. [2021-10-08 16:09:38,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 16:09:38,677 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:09:38,678 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:09:38,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2021-10-08 16:09:38,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,94 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:09:38,892 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:09:38,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:09:38,892 INFO L82 PathProgramCache]: Analyzing trace with hash 792897179, now seen corresponding path program 8 times [2021-10-08 16:09:38,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:09:38,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390193520] [2021-10-08 16:09:38,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:09:38,893 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:09:39,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:09:40,156 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:09:40,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:09:40,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390193520] [2021-10-08 16:09:40,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390193520] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:09:40,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458906456] [2021-10-08 16:09:40,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:09:40,157 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:09:40,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:09:40,158 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:09:40,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2021-10-08 16:09:42,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:09:42,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:09:42,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-08 16:09:42,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:09:42,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 142 [2021-10-08 16:09:42,820 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:09:42,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:09:42,922 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:09:42,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:09:43,820 INFO L354 Elim1Store]: treesize reduction 42, result has 6.7 percent of original size [2021-10-08 16:09:43,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 32 [2021-10-08 16:09:43,867 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:09:43,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458906456] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:09:43,868 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:09:43,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 31 [2021-10-08 16:09:43,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596890073] [2021-10-08 16:09:43,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-10-08 16:09:43,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:09:43,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-10-08 16:09:43,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=957, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 16:09:43,870 INFO L87 Difference]: Start difference. First operand 7399 states and 28860 transitions. Second operand has 33 states, 32 states have (on average 1.3125) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:52,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:09:52,120 INFO L93 Difference]: Finished difference Result 13717 states and 51264 transitions. [2021-10-08 16:09:52,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-08 16:09:52,120 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.3125) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 16:09:52,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:09:52,170 INFO L225 Difference]: With dead ends: 13717 [2021-10-08 16:09:52,171 INFO L226 Difference]: Without dead ends: 13625 [2021-10-08 16:09:52,171 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1046 ImplicationChecksByTransitivity, 6008.5ms TimeCoverageRelationStatistics Valid=613, Invalid=4217, Unknown=0, NotChecked=0, Total=4830 [2021-10-08 16:09:52,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13625 states. [2021-10-08 16:09:52,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13625 to 7407. [2021-10-08 16:09:52,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7407 states, 7322 states have (on average 3.9449603933351542) internal successors, (28885), 7406 states have internal predecessors, (28885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:52,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7407 states to 7407 states and 28885 transitions. [2021-10-08 16:09:52,440 INFO L78 Accepts]: Start accepts. Automaton has 7407 states and 28885 transitions. Word has length 21 [2021-10-08 16:09:52,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:09:52,440 INFO L470 AbstractCegarLoop]: Abstraction has 7407 states and 28885 transitions. [2021-10-08 16:09:52,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.3125) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:52,440 INFO L276 IsEmpty]: Start isEmpty. Operand 7407 states and 28885 transitions. [2021-10-08 16:09:52,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 16:09:52,443 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:09:52,443 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:09:52,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2021-10-08 16:09:52,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,95 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:09:52,644 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:09:52,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:09:52,644 INFO L82 PathProgramCache]: Analyzing trace with hash 797654129, now seen corresponding path program 9 times [2021-10-08 16:09:52,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:09:52,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481127183] [2021-10-08 16:09:52,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:09:52,645 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:09:52,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:09:52,915 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-08 16:09:52,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:09:52,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481127183] [2021-10-08 16:09:52,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481127183] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:09:52,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241871272] [2021-10-08 16:09:52,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:09:52,916 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:09:52,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:09:52,917 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:09:52,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2021-10-08 16:09:55,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 16:09:55,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:09:55,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 16:09:55,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:09:55,318 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:09:55,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:09:55,381 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:09:55,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:09:56,058 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-10-08 16:09:56,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 18 [2021-10-08 16:09:56,084 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-08 16:09:56,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241871272] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:09:56,084 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:09:56,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2021-10-08 16:09:56,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105475301] [2021-10-08 16:09:56,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-08 16:09:56,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:09:56,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-08 16:09:56,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2021-10-08 16:09:56,086 INFO L87 Difference]: Start difference. First operand 7407 states and 28885 transitions. Second operand has 26 states, 25 states have (on average 1.52) internal successors, (38), 25 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:58,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:09:58,364 INFO L93 Difference]: Finished difference Result 10302 states and 38829 transitions. [2021-10-08 16:09:58,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 16:09:58,365 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.52) internal successors, (38), 25 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 16:09:58,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:09:58,398 INFO L225 Difference]: With dead ends: 10302 [2021-10-08 16:09:58,398 INFO L226 Difference]: Without dead ends: 10177 [2021-10-08 16:09:58,398 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 1381.0ms TimeCoverageRelationStatistics Valid=310, Invalid=1582, Unknown=0, NotChecked=0, Total=1892 [2021-10-08 16:09:58,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10177 states. [2021-10-08 16:09:58,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10177 to 7213. [2021-10-08 16:09:58,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7213 states, 7128 states have (on average 3.976571268237935) internal successors, (28345), 7212 states have internal predecessors, (28345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:58,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7213 states to 7213 states and 28345 transitions. [2021-10-08 16:09:58,636 INFO L78 Accepts]: Start accepts. Automaton has 7213 states and 28345 transitions. Word has length 21 [2021-10-08 16:09:58,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:09:58,636 INFO L470 AbstractCegarLoop]: Abstraction has 7213 states and 28345 transitions. [2021-10-08 16:09:58,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.52) internal successors, (38), 25 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:58,637 INFO L276 IsEmpty]: Start isEmpty. Operand 7213 states and 28345 transitions. [2021-10-08 16:09:58,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 16:09:58,639 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:09:58,639 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:09:58,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2021-10-08 16:09:58,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,96 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:09:58,840 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:09:58,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:09:58,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1016983665, now seen corresponding path program 1 times [2021-10-08 16:09:58,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:09:58,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373062189] [2021-10-08 16:09:58,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:09:58,843 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:09:58,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:09:59,170 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:09:59,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:09:59,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373062189] [2021-10-08 16:09:59,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373062189] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:09:59,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190451484] [2021-10-08 16:09:59,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:09:59,171 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:09:59,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:09:59,172 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:09:59,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2021-10-08 16:10:01,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:10:01,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 50 conjunts are in the unsatisfiable core [2021-10-08 16:10:01,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:10:01,724 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:10:01,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:10:02,656 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-10-08 16:10:02,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 19 [2021-10-08 16:10:02,682 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:10:02,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190451484] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:10:02,683 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:10:02,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15] total 27 [2021-10-08 16:10:02,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125014210] [2021-10-08 16:10:02,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-08 16:10:02,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:10:02,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-08 16:10:02,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=689, Unknown=0, NotChecked=0, Total=812 [2021-10-08 16:10:02,684 INFO L87 Difference]: Start difference. First operand 7213 states and 28345 transitions. Second operand has 29 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:07,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:10:07,686 INFO L93 Difference]: Finished difference Result 16272 states and 58524 transitions. [2021-10-08 16:10:07,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-10-08 16:10:07,686 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 16:10:07,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:10:07,736 INFO L225 Difference]: With dead ends: 16272 [2021-10-08 16:10:07,736 INFO L226 Difference]: Without dead ends: 16255 [2021-10-08 16:10:07,737 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2427 ImplicationChecksByTransitivity, 3847.8ms TimeCoverageRelationStatistics Valid=1171, Invalid=5969, Unknown=0, NotChecked=0, Total=7140 [2021-10-08 16:10:07,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16255 states. [2021-10-08 16:10:08,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16255 to 9579. [2021-10-08 16:10:08,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9579 states, 9494 states have (on average 3.9315357067621655) internal successors, (37326), 9578 states have internal predecessors, (37326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:08,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9579 states to 9579 states and 37326 transitions. [2021-10-08 16:10:08,052 INFO L78 Accepts]: Start accepts. Automaton has 9579 states and 37326 transitions. Word has length 21 [2021-10-08 16:10:08,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:10:08,052 INFO L470 AbstractCegarLoop]: Abstraction has 9579 states and 37326 transitions. [2021-10-08 16:10:08,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:08,052 INFO L276 IsEmpty]: Start isEmpty. Operand 9579 states and 37326 transitions. [2021-10-08 16:10:08,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 16:10:08,057 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:10:08,057 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:10:08,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2021-10-08 16:10:08,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,97 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:10:08,270 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:10:08,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:10:08,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1203859725, now seen corresponding path program 2 times [2021-10-08 16:10:08,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:10:08,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590167051] [2021-10-08 16:10:08,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:10:08,272 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:10:08,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:10:09,591 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:10:09,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:10:09,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590167051] [2021-10-08 16:10:09,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590167051] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:10:09,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581367274] [2021-10-08 16:10:09,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:10:09,592 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:10:09,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:10:09,593 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:10:09,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2021-10-08 16:10:11,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:10:11,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:10:11,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-08 16:10:11,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:10:12,101 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:10:12,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:10:13,156 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-10-08 16:10:13,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 19 [2021-10-08 16:10:13,192 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:10:13,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581367274] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:10:13,192 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:10:13,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 29 [2021-10-08 16:10:13,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325133051] [2021-10-08 16:10:13,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-08 16:10:13,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:10:13,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-08 16:10:13,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=832, Unknown=0, NotChecked=0, Total=930 [2021-10-08 16:10:13,194 INFO L87 Difference]: Start difference. First operand 9579 states and 37326 transitions. Second operand has 31 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 30 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:27,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:10:27,636 INFO L93 Difference]: Finished difference Result 27767 states and 101157 transitions. [2021-10-08 16:10:27,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-10-08 16:10:27,636 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 30 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 16:10:27,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:10:27,746 INFO L225 Difference]: With dead ends: 27767 [2021-10-08 16:10:27,747 INFO L226 Difference]: Without dead ends: 27759 [2021-10-08 16:10:27,748 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5842 ImplicationChecksByTransitivity, 11934.8ms TimeCoverageRelationStatistics Valid=2815, Invalid=14741, Unknown=0, NotChecked=0, Total=17556 [2021-10-08 16:10:27,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27759 states. [2021-10-08 16:10:28,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27759 to 11713. [2021-10-08 16:10:28,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11713 states, 11628 states have (on average 3.9553663570691433) internal successors, (45993), 11712 states have internal predecessors, (45993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:28,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11713 states to 11713 states and 45993 transitions. [2021-10-08 16:10:28,298 INFO L78 Accepts]: Start accepts. Automaton has 11713 states and 45993 transitions. Word has length 21 [2021-10-08 16:10:28,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:10:28,298 INFO L470 AbstractCegarLoop]: Abstraction has 11713 states and 45993 transitions. [2021-10-08 16:10:28,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 30 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:28,298 INFO L276 IsEmpty]: Start isEmpty. Operand 11713 states and 45993 transitions. [2021-10-08 16:10:28,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 16:10:28,302 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:10:28,302 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:10:28,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2021-10-08 16:10:28,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111,98 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:10:28,509 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:10:28,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:10:28,509 INFO L82 PathProgramCache]: Analyzing trace with hash -271359022, now seen corresponding path program 1 times [2021-10-08 16:10:28,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:10:28,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173358134] [2021-10-08 16:10:28,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:10:28,510 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:10:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:10:29,036 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:10:29,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:10:29,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173358134] [2021-10-08 16:10:29,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173358134] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:10:29,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39459869] [2021-10-08 16:10:29,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:10:29,038 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:10:29,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:10:29,039 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:10:29,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2021-10-08 16:10:31,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:10:31,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-08 16:10:31,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:10:31,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:10:31,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:10:31,417 INFO L354 Elim1Store]: treesize reduction 346, result has 12.6 percent of original size [2021-10-08 16:10:31,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 226 treesize of output 252 [2021-10-08 16:10:32,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-08 16:10:33,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:10:33,151 INFO L354 Elim1Store]: treesize reduction 128, result has 36.3 percent of original size [2021-10-08 16:10:33,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 25 case distinctions, treesize of input 68 treesize of output 124 [2021-10-08 16:10:33,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 34 [2021-10-08 16:10:33,436 INFO L354 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2021-10-08 16:10:33,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 50 [2021-10-08 16:10:33,538 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:10:33,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-10-08 16:10:33,663 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:10:33,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2021-10-08 16:10:33,959 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:10:33,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2021-10-08 16:10:34,046 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-08 16:10:34,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2021-10-08 16:10:34,078 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:10:34,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39459869] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:10:34,078 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:10:34,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 24 [2021-10-08 16:10:34,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450186593] [2021-10-08 16:10:34,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-08 16:10:34,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:10:34,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-08 16:10:34,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=577, Unknown=0, NotChecked=0, Total=650 [2021-10-08 16:10:34,080 INFO L87 Difference]: Start difference. First operand 11713 states and 45993 transitions. Second operand has 26 states, 25 states have (on average 1.64) internal successors, (41), 25 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:39,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:10:39,518 INFO L93 Difference]: Finished difference Result 17643 states and 66615 transitions. [2021-10-08 16:10:39,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-08 16:10:39,519 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.64) internal successors, (41), 25 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 16:10:39,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:10:39,597 INFO L225 Difference]: With dead ends: 17643 [2021-10-08 16:10:39,597 INFO L226 Difference]: Without dead ends: 17643 [2021-10-08 16:10:39,598 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 773 ImplicationChecksByTransitivity, 3654.3ms TimeCoverageRelationStatistics Valid=570, Invalid=3090, Unknown=0, NotChecked=0, Total=3660 [2021-10-08 16:10:39,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17643 states. [2021-10-08 16:10:40,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17643 to 13009. [2021-10-08 16:10:40,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13009 states, 12924 states have (on average 3.997137109254101) internal successors, (51659), 13008 states have internal predecessors, (51659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:40,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13009 states to 13009 states and 51659 transitions. [2021-10-08 16:10:40,127 INFO L78 Accepts]: Start accepts. Automaton has 13009 states and 51659 transitions. Word has length 21 [2021-10-08 16:10:40,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:10:40,127 INFO L470 AbstractCegarLoop]: Abstraction has 13009 states and 51659 transitions. [2021-10-08 16:10:40,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.64) internal successors, (41), 25 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:40,128 INFO L276 IsEmpty]: Start isEmpty. Operand 13009 states and 51659 transitions. [2021-10-08 16:10:40,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 16:10:40,131 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:10:40,131 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:10:40,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2021-10-08 16:10:40,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2021-10-08 16:10:40,332 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:10:40,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:10:40,333 INFO L82 PathProgramCache]: Analyzing trace with hash -271358882, now seen corresponding path program 1 times [2021-10-08 16:10:40,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:10:40,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990595164] [2021-10-08 16:10:40,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:10:40,334 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:10:40,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:10:41,034 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:10:41,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:10:41,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990595164] [2021-10-08 16:10:41,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990595164] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:10:41,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008914288] [2021-10-08 16:10:41,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:10:41,037 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:10:41,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:10:41,038 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:10:41,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2021-10-08 16:10:43,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:10:43,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-08 16:10:43,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:10:43,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:10:43,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:10:43,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:10:43,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:10:43,904 INFO L354 Elim1Store]: treesize reduction 330, result has 13.2 percent of original size [2021-10-08 16:10:43,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 184 treesize of output 198 [2021-10-08 16:10:45,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-08 16:10:45,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:10:45,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:10:45,697 INFO L354 Elim1Store]: treesize reduction 128, result has 36.3 percent of original size [2021-10-08 16:10:45,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 25 case distinctions, treesize of input 68 treesize of output 124 [2021-10-08 16:10:45,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-08 16:10:45,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-10-08 16:10:45,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:10:46,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:10:46,353 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:10:46,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2021-10-08 16:10:46,443 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-08 16:10:46,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2021-10-08 16:10:46,478 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:10:46,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008914288] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:10:46,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:10:46,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 27 [2021-10-08 16:10:46,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613405065] [2021-10-08 16:10:46,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-08 16:10:46,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:10:46,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-08 16:10:46,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=717, Unknown=0, NotChecked=0, Total=812 [2021-10-08 16:10:46,480 INFO L87 Difference]: Start difference. First operand 13009 states and 51659 transitions. Second operand has 29 states, 28 states have (on average 1.4642857142857142) internal successors, (41), 28 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:49,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:10:49,245 INFO L93 Difference]: Finished difference Result 14741 states and 56219 transitions. [2021-10-08 16:10:49,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 16:10:49,245 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.4642857142857142) internal successors, (41), 28 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 16:10:49,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:10:49,292 INFO L225 Difference]: With dead ends: 14741 [2021-10-08 16:10:49,293 INFO L226 Difference]: Without dead ends: 14643 [2021-10-08 16:10:49,293 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 2254.4ms TimeCoverageRelationStatistics Valid=334, Invalid=2116, Unknown=0, NotChecked=0, Total=2450 [2021-10-08 16:10:49,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14643 states. [2021-10-08 16:10:49,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14643 to 12740. [2021-10-08 16:10:49,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12740 states, 12655 states have (on average 3.9951797708415646) internal successors, (50559), 12739 states have internal predecessors, (50559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:49,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12740 states to 12740 states and 50559 transitions. [2021-10-08 16:10:49,600 INFO L78 Accepts]: Start accepts. Automaton has 12740 states and 50559 transitions. Word has length 21 [2021-10-08 16:10:49,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:10:49,600 INFO L470 AbstractCegarLoop]: Abstraction has 12740 states and 50559 transitions. [2021-10-08 16:10:49,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.4642857142857142) internal successors, (41), 28 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:49,600 INFO L276 IsEmpty]: Start isEmpty. Operand 12740 states and 50559 transitions. [2021-10-08 16:10:49,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 16:10:49,604 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:10:49,604 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:10:49,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2021-10-08 16:10:49,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113,100 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:10:49,805 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:10:49,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:10:49,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1545223216, now seen corresponding path program 2 times [2021-10-08 16:10:49,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:10:49,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499813442] [2021-10-08 16:10:49,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:10:49,806 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:10:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:10:50,614 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:10:50,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:10:50,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499813442] [2021-10-08 16:10:50,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499813442] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:10:50,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955020837] [2021-10-08 16:10:50,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:10:50,615 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:10:50,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:10:50,616 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:10:50,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2021-10-08 16:10:52,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:10:52,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:10:52,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-08 16:10:52,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:10:52,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:10:52,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:10:52,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:10:52,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:10:53,055 INFO L354 Elim1Store]: treesize reduction 330, result has 13.2 percent of original size [2021-10-08 16:10:53,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 87 treesize of output 113 [2021-10-08 16:10:54,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-08 16:10:54,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:10:54,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:10:54,644 INFO L354 Elim1Store]: treesize reduction 128, result has 36.3 percent of original size [2021-10-08 16:10:54,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 25 case distinctions, treesize of input 68 treesize of output 124 [2021-10-08 16:10:54,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-08 16:10:54,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-10-08 16:10:54,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:10:55,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:10:55,695 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:10:55,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2021-10-08 16:10:55,776 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-08 16:10:55,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 21 [2021-10-08 16:10:55,814 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:10:55,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955020837] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:10:55,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:10:55,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2021-10-08 16:10:55,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017302017] [2021-10-08 16:10:55,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-08 16:10:55,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:10:55,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-08 16:10:55,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=783, Unknown=0, NotChecked=0, Total=870 [2021-10-08 16:10:55,816 INFO L87 Difference]: Start difference. First operand 12740 states and 50559 transitions. Second operand has 30 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 29 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:11:03,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:11:03,828 INFO L93 Difference]: Finished difference Result 17832 states and 68398 transitions. [2021-10-08 16:11:03,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-08 16:11:03,828 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 29 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 16:11:03,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:11:03,894 INFO L225 Difference]: With dead ends: 17832 [2021-10-08 16:11:03,894 INFO L226 Difference]: Without dead ends: 17706 [2021-10-08 16:11:03,895 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1333 ImplicationChecksByTransitivity, 6382.4ms TimeCoverageRelationStatistics Valid=740, Invalid=4960, Unknown=0, NotChecked=0, Total=5700 [2021-10-08 16:11:03,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17706 states. [2021-10-08 16:11:04,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17706 to 13212. [2021-10-08 16:11:04,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13212 states, 13123 states have (on average 4.096700449592319) internal successors, (53761), 13211 states have internal predecessors, (53761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:11:04,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13212 states to 13212 states and 53761 transitions. [2021-10-08 16:11:04,337 INFO L78 Accepts]: Start accepts. Automaton has 13212 states and 53761 transitions. Word has length 21 [2021-10-08 16:11:04,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:11:04,337 INFO L470 AbstractCegarLoop]: Abstraction has 13212 states and 53761 transitions. [2021-10-08 16:11:04,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 29 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:11:04,337 INFO L276 IsEmpty]: Start isEmpty. Operand 13212 states and 53761 transitions. [2021-10-08 16:11:04,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 16:11:04,341 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:11:04,341 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:11:04,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0 [2021-10-08 16:11:04,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2021-10-08 16:11:04,542 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:11:04,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:11:04,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1540754566, now seen corresponding path program 3 times [2021-10-08 16:11:04,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:11:04,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551106865] [2021-10-08 16:11:04,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:11:04,544 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:11:04,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:11:05,353 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:11:05,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:11:05,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551106865] [2021-10-08 16:11:05,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551106865] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:11:05,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004042016] [2021-10-08 16:11:05,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:11:05,354 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:11:05,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:11:05,355 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:11:05,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2021-10-08 16:11:07,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 16:11:07,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:11:07,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 46 conjunts are in the unsatisfiable core [2021-10-08 16:11:07,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:11:07,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:11:07,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:11:07,918 INFO L354 Elim1Store]: treesize reduction 346, result has 12.6 percent of original size [2021-10-08 16:11:07,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 99 treesize of output 125 [2021-10-08 16:11:09,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-08 16:11:09,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:11:09,803 INFO L354 Elim1Store]: treesize reduction 128, result has 36.3 percent of original size [2021-10-08 16:11:09,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 25 case distinctions, treesize of input 68 treesize of output 124 [2021-10-08 16:11:09,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-08 16:11:09,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-10-08 16:11:10,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:11:10,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-08 16:11:10,997 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:11:10,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 40 [2021-10-08 16:11:11,108 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-08 16:11:11,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 30 [2021-10-08 16:11:11,162 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:11:11,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004042016] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:11:11,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:11:11,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 29 [2021-10-08 16:11:11,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867189860] [2021-10-08 16:11:11,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-08 16:11:11,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:11:11,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-08 16:11:11,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=836, Unknown=0, NotChecked=0, Total=930 [2021-10-08 16:11:11,164 INFO L87 Difference]: Start difference. First operand 13212 states and 53761 transitions. Second operand has 31 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 30 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:11:15,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:11:15,474 INFO L93 Difference]: Finished difference Result 15686 states and 60715 transitions. [2021-10-08 16:11:15,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-08 16:11:15,475 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 30 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 16:11:15,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:11:15,528 INFO L225 Difference]: With dead ends: 15686 [2021-10-08 16:11:15,528 INFO L226 Difference]: Without dead ends: 15632 [2021-10-08 16:11:15,528 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 3563.8ms TimeCoverageRelationStatistics Valid=400, Invalid=2906, Unknown=0, NotChecked=0, Total=3306 [2021-10-08 16:11:15,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15632 states. [2021-10-08 16:11:15,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15632 to 13191. [2021-10-08 16:11:15,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13191 states, 13102 states have (on average 4.09639749656541) internal successors, (53671), 13190 states have internal predecessors, (53671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:11:15,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13191 states to 13191 states and 53671 transitions. [2021-10-08 16:11:15,852 INFO L78 Accepts]: Start accepts. Automaton has 13191 states and 53671 transitions. Word has length 21 [2021-10-08 16:11:15,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:11:15,852 INFO L470 AbstractCegarLoop]: Abstraction has 13191 states and 53671 transitions. [2021-10-08 16:11:15,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 30 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:11:15,852 INFO L276 IsEmpty]: Start isEmpty. Operand 13191 states and 53671 transitions. [2021-10-08 16:11:15,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 16:11:15,857 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:11:15,857 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:11:15,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2021-10-08 16:11:16,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,102 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:11:16,064 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:11:16,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:11:16,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1338820553, now seen corresponding path program 3 times [2021-10-08 16:11:16,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:11:16,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143437154] [2021-10-08 16:11:16,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:11:16,065 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:11:16,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:11:16,939 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:11:16,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:11:16,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143437154] [2021-10-08 16:11:16,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143437154] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:11:16,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752392695] [2021-10-08 16:11:16,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:11:16,940 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:11:16,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:11:16,941 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:11:16,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2021-10-08 16:11:19,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 16:11:19,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:11:19,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-08 16:11:19,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:11:19,889 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:11:19,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:11:21,110 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-10-08 16:11:21,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 19 [2021-10-08 16:11:21,144 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:11:21,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752392695] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:11:21,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:11:21,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2021-10-08 16:11:21,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550259302] [2021-10-08 16:11:21,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-08 16:11:21,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:11:21,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-08 16:11:21,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=772, Unknown=0, NotChecked=0, Total=870 [2021-10-08 16:11:21,146 INFO L87 Difference]: Start difference. First operand 13191 states and 53671 transitions. Second operand has 30 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 29 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:11:31,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:11:31,032 INFO L93 Difference]: Finished difference Result 27593 states and 106192 transitions. [2021-10-08 16:11:31,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-10-08 16:11:31,032 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 29 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 16:11:31,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:11:31,137 INFO L225 Difference]: With dead ends: 27593 [2021-10-08 16:11:31,137 INFO L226 Difference]: Without dead ends: 27271 [2021-10-08 16:11:31,138 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3018 ImplicationChecksByTransitivity, 6898.6ms TimeCoverageRelationStatistics Valid=1254, Invalid=8252, Unknown=0, NotChecked=0, Total=9506 [2021-10-08 16:11:31,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27271 states. [2021-10-08 16:11:31,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27271 to 15699. [2021-10-08 16:11:31,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15699 states, 15610 states have (on average 4.100960922485586) internal successors, (64016), 15698 states have internal predecessors, (64016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:11:31,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15699 states to 15699 states and 64016 transitions. [2021-10-08 16:11:31,699 INFO L78 Accepts]: Start accepts. Automaton has 15699 states and 64016 transitions. Word has length 21 [2021-10-08 16:11:31,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:11:31,700 INFO L470 AbstractCegarLoop]: Abstraction has 15699 states and 64016 transitions. [2021-10-08 16:11:31,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 29 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:11:31,700 INFO L276 IsEmpty]: Start isEmpty. Operand 15699 states and 64016 transitions. [2021-10-08 16:11:31,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 16:11:31,703 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:11:31,703 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:11:31,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2021-10-08 16:11:31,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2021-10-08 16:11:31,904 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:11:31,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:11:31,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1151944493, now seen corresponding path program 4 times [2021-10-08 16:11:31,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:11:31,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256223136] [2021-10-08 16:11:31,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:11:31,906 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:11:31,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:11:32,220 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:11:32,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:11:32,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256223136] [2021-10-08 16:11:32,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256223136] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:11:32,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252605652] [2021-10-08 16:11:32,221 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:11:32,221 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:11:32,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:11:32,222 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:11:32,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2021-10-08 16:11:34,691 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:11:34,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:11:34,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-08 16:11:34,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:11:34,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:11:34,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:11:34,852 INFO L354 Elim1Store]: treesize reduction 346, result has 12.6 percent of original size [2021-10-08 16:11:34,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 99 treesize of output 125 [2021-10-08 16:11:36,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-08 16:11:36,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:11:37,046 INFO L354 Elim1Store]: treesize reduction 136, result has 34.9 percent of original size [2021-10-08 16:11:37,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 26 case distinctions, treesize of input 72 treesize of output 128 [2021-10-08 16:11:37,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-08 16:11:37,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-10-08 16:11:37,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:11:37,452 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:11:37,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:11:38,794 INFO L354 Elim1Store]: treesize reduction 96, result has 6.8 percent of original size [2021-10-08 16:11:38,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 115 treesize of output 78 [2021-10-08 16:11:38,859 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:11:38,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252605652] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:11:38,859 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:11:38,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15] total 27 [2021-10-08 16:11:38,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799425698] [2021-10-08 16:11:38,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-08 16:11:38,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:11:38,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-08 16:11:38,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=680, Unknown=0, NotChecked=0, Total=812 [2021-10-08 16:11:38,861 INFO L87 Difference]: Start difference. First operand 15699 states and 64016 transitions. Second operand has 29 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 28 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:11:46,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:11:46,437 INFO L93 Difference]: Finished difference Result 38768 states and 146604 transitions. [2021-10-08 16:11:46,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-10-08 16:11:46,437 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 28 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 16:11:46,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:11:46,586 INFO L225 Difference]: With dead ends: 38768 [2021-10-08 16:11:46,586 INFO L226 Difference]: Without dead ends: 38768 [2021-10-08 16:11:46,587 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3795 ImplicationChecksByTransitivity, 5152.6ms TimeCoverageRelationStatistics Valid=1946, Invalid=8356, Unknown=0, NotChecked=0, Total=10302 [2021-10-08 16:11:46,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38768 states. [2021-10-08 16:11:47,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38768 to 18142. [2021-10-08 16:11:47,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18142 states, 18053 states have (on average 4.080208275632859) internal successors, (73660), 18141 states have internal predecessors, (73660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:11:47,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18142 states to 18142 states and 73660 transitions. [2021-10-08 16:11:47,418 INFO L78 Accepts]: Start accepts. Automaton has 18142 states and 73660 transitions. Word has length 21 [2021-10-08 16:11:47,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:11:47,419 INFO L470 AbstractCegarLoop]: Abstraction has 18142 states and 73660 transitions. [2021-10-08 16:11:47,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 28 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:11:47,419 INFO L276 IsEmpty]: Start isEmpty. Operand 18142 states and 73660 transitions. [2021-10-08 16:11:47,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 16:11:47,423 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:11:47,423 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:11:47,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0 [2021-10-08 16:11:47,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,104 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:11:47,624 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:11:47,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:11:47,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1363795685, now seen corresponding path program 5 times [2021-10-08 16:11:47,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:11:47,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692405205] [2021-10-08 16:11:47,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:11:47,625 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:11:47,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:11:48,456 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:11:48,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:11:48,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692405205] [2021-10-08 16:11:48,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692405205] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:11:48,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459264119] [2021-10-08 16:11:48,458 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:11:48,458 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:11:48,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:11:48,459 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:11:48,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2021-10-08 16:11:51,377 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:11:51,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:11:51,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-08 16:11:51,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:11:51,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 133 [2021-10-08 16:11:51,696 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:11:51,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:11:52,626 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-10-08 16:11:52,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 19 [2021-10-08 16:11:52,660 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:11:52,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459264119] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:11:52,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:11:52,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2021-10-08 16:11:52,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445763409] [2021-10-08 16:11:52,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-08 16:11:52,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:11:52,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-08 16:11:52,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=758, Unknown=0, NotChecked=0, Total=870 [2021-10-08 16:11:52,662 INFO L87 Difference]: Start difference. First operand 18142 states and 73660 transitions. Second operand has 30 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 29 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:11:58,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:11:58,966 INFO L93 Difference]: Finished difference Result 27675 states and 107882 transitions. [2021-10-08 16:11:58,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-08 16:11:58,967 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 29 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 16:11:58,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:11:59,194 INFO L225 Difference]: With dead ends: 27675 [2021-10-08 16:11:59,195 INFO L226 Difference]: Without dead ends: 27488 [2021-10-08 16:11:59,195 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1618 ImplicationChecksByTransitivity, 4759.9ms TimeCoverageRelationStatistics Valid=859, Invalid=5147, Unknown=0, NotChecked=0, Total=6006 [2021-10-08 16:11:59,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27488 states. [2021-10-08 16:11:59,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27488 to 19537. [2021-10-08 16:11:59,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19537 states, 19448 states have (on average 4.07455779514603) internal successors, (79242), 19536 states have internal predecessors, (79242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:11:59,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19537 states to 19537 states and 79242 transitions. [2021-10-08 16:11:59,955 INFO L78 Accepts]: Start accepts. Automaton has 19537 states and 79242 transitions. Word has length 21 [2021-10-08 16:11:59,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:11:59,956 INFO L470 AbstractCegarLoop]: Abstraction has 19537 states and 79242 transitions. [2021-10-08 16:11:59,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 29 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:11:59,956 INFO L276 IsEmpty]: Start isEmpty. Operand 19537 states and 79242 transitions. [2021-10-08 16:11:59,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 16:11:59,962 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:11:59,962 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:12:00,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2021-10-08 16:12:00,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2021-10-08 16:12:00,178 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:12:00,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:12:00,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1363709195, now seen corresponding path program 6 times [2021-10-08 16:12:00,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:12:00,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467167787] [2021-10-08 16:12:00,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:12:00,181 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:12:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:12:01,234 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:12:01,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:12:01,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467167787] [2021-10-08 16:12:01,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467167787] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:12:01,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044062670] [2021-10-08 16:12:01,235 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:12:01,235 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:12:01,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:12:01,236 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:12:01,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2021-10-08 16:12:03,991 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 16:12:03,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:12:03,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-08 16:12:03,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:12:04,405 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:12:04,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:12:05,688 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-10-08 16:12:05,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 19 [2021-10-08 16:12:05,730 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:12:05,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044062670] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:12:05,730 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:12:05,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2021-10-08 16:12:05,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296927347] [2021-10-08 16:12:05,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-08 16:12:05,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:12:05,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-08 16:12:05,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=780, Unknown=0, NotChecked=0, Total=870 [2021-10-08 16:12:05,732 INFO L87 Difference]: Start difference. First operand 19537 states and 79242 transitions. Second operand has 30 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 29 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:13,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:12:13,347 INFO L93 Difference]: Finished difference Result 30326 states and 117349 transitions. [2021-10-08 16:12:13,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-08 16:12:13,347 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 29 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 16:12:13,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:12:13,470 INFO L225 Difference]: With dead ends: 30326 [2021-10-08 16:12:13,470 INFO L226 Difference]: Without dead ends: 30326 [2021-10-08 16:12:13,471 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1444 ImplicationChecksByTransitivity, 6170.2ms TimeCoverageRelationStatistics Valid=977, Invalid=4875, Unknown=0, NotChecked=0, Total=5852 [2021-10-08 16:12:13,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30326 states. [2021-10-08 16:12:14,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30326 to 20278. [2021-10-08 16:12:14,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20278 states, 20189 states have (on average 4.070335331120908) internal successors, (82176), 20277 states have internal predecessors, (82176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:14,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20278 states to 20278 states and 82176 transitions. [2021-10-08 16:12:14,369 INFO L78 Accepts]: Start accepts. Automaton has 20278 states and 82176 transitions. Word has length 21 [2021-10-08 16:12:14,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:12:14,369 INFO L470 AbstractCegarLoop]: Abstraction has 20278 states and 82176 transitions. [2021-10-08 16:12:14,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 29 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:14,369 INFO L276 IsEmpty]: Start isEmpty. Operand 20278 states and 82176 transitions. [2021-10-08 16:12:14,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 16:12:14,374 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:12:14,374 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:12:14,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Forceful destruction successful, exit code 0 [2021-10-08 16:12:14,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,106 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:12:14,574 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2021-10-08 16:12:14,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:12:14,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1176919625, now seen corresponding path program 7 times [2021-10-08 16:12:14,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:12:14,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099165833] [2021-10-08 16:12:14,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:12:14,577 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:12:14,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:12:15,473 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:12:15,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:12:15,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099165833] [2021-10-08 16:12:15,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099165833] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:12:15,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354332919] [2021-10-08 16:12:15,473 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:12:15,474 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:12:15,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:12:15,475 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:12:15,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2021-10-08 16:12:18,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:12:18,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 49 conjunts are in the unsatisfiable core [2021-10-08 16:12:18,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2021-10-08 16:12:18,250 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,260 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-08 16:12:18,280 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-08 16:12:18,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Forceful destruction successful, exit code 0 [2021-10-08 16:12:18,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,107 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:12:18,451 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. [2021-10-08 16:12:18,454 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,454 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,454 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,454 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,455 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,455 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,455 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,455 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,455 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,455 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,455 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,455 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,455 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,456 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,456 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,456 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,456 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,456 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,456 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,456 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,456 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,456 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,457 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,457 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,457 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,457 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,457 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,457 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,457 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,457 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,457 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,457 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,457 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-08 16:12:18,458 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-08 16:12:18,458 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-08 16:12:18,458 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,458 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,458 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,458 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,458 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,458 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,458 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,458 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,459 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,459 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,459 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,459 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,459 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,459 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,459 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,459 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,459 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,459 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,459 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,460 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,460 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,460 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,460 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,460 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,460 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:18,468 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-08 16:12:18,468 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-08 16:12:18,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.10 04:12:18 BasicIcfg [2021-10-08 16:12:18,471 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-08 16:12:18,471 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.witnessprinter [2021-10-08 16:12:18,472 INFO L168 Benchmark]: Toolchain (without parser) took 716741.21 ms. Allocated memory was 155.2 MB in the beginning and 3.0 GB in the end (delta: 2.8 GB). Free memory was 130.7 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.6 GB. Max. memory is 8.0 GB. [2021-10-08 16:12:18,472 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 155.2 MB. Free memory is still 126.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-08 16:12:18,472 INFO L168 Benchmark]: CACSL2BoogieTranslator took 382.37 ms. Allocated memory is still 155.2 MB. Free memory was 130.2 MB in the beginning and 118.5 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-08 16:12:18,472 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.96 ms. Allocated memory is still 155.2 MB. Free memory was 118.5 MB in the beginning and 115.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-10-08 16:12:18,472 INFO L168 Benchmark]: Boogie Preprocessor took 103.48 ms. Allocated memory is still 155.2 MB. Free memory was 115.8 MB in the beginning and 113.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 16:12:18,473 INFO L168 Benchmark]: RCFGBuilder took 1723.54 ms. Allocated memory is still 155.2 MB. Free memory was 113.9 MB in the beginning and 92.2 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.4 MB. Max. memory is 8.0 GB. [2021-10-08 16:12:18,473 INFO L168 Benchmark]: TraceAbstraction took 714421.37 ms. Allocated memory was 155.2 MB in the beginning and 3.0 GB in the end (delta: 2.8 GB). Free memory was 91.7 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.5 GB. Max. memory is 8.0 GB. [2021-10-08 16:12:18,474 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 155.2 MB. Free memory is still 126.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 382.37 ms. Allocated memory is still 155.2 MB. Free memory was 130.2 MB in the beginning and 118.5 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 86.96 ms. Allocated memory is still 155.2 MB. Free memory was 118.5 MB in the beginning and 115.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 103.48 ms. Allocated memory is still 155.2 MB. Free memory was 115.8 MB in the beginning and 113.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1723.54 ms. Allocated memory is still 155.2 MB. Free memory was 113.9 MB in the beginning and 92.2 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 714421.37 ms. Allocated memory was 155.2 MB in the beginning and 3.0 GB in the end (delta: 2.8 GB). Free memory was 91.7 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.5 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 17157.0ms, 276 PlacesBefore, 69 PlacesAfterwards, 291 TransitionsBefore, 66 TransitionsAfterwards, 5904 CoEnabledTransitionPairs, 7 FixpointIterations, 179 TrivialSequentialCompositions, 89 ConcurrentSequentialCompositions, 37 TrivialYvCompositions, 12 ConcurrentYvCompositions, 18 ChoiceCompositions, 335 TotalNumberOfCompositions, 12018 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7820, positive: 7641, positive conditional: 0, positive unconditional: 7641, negative: 179, negative conditional: 0, negative unconditional: 179, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3767, positive: 3726, positive conditional: 0, positive unconditional: 3726, negative: 41, negative conditional: 0, negative unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3767, positive: 3697, positive conditional: 0, positive unconditional: 3697, negative: 70, negative conditional: 0, negative unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 70, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 41, negative conditional: 0, negative unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 450, positive: 195, positive conditional: 0, positive unconditional: 195, negative: 255, negative conditional: 0, negative unconditional: 255, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 7820, positive: 3915, positive conditional: 0, positive unconditional: 3915, negative: 138, negative conditional: 0, negative unconditional: 138, unknown: 3767, unknown conditional: 0, unknown unconditional: 3767] , Statistics on independence cache: Total cache size (in pairs): 443, Positive cache size: 426, Positive conditional cache size: 0, Positive unconditional cache size: 426, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - TimeoutResultAtElement [Line: 57]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - TimeoutResultAtElement [Line: 57]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - TimeoutResultAtElement [Line: 108]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - TimeoutResultAtElement [Line: 108]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - TimeoutResultAtElement [Line: 111]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - TimeoutResultAtElement [Line: 111]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - TimeoutResultAtElement [Line: 163]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - TimeoutResultAtElement [Line: 163]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - TimeoutResultAtElement [Line: 163]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - TimeoutResultAtElement [Line: 163]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - TimeoutResultAtElement [Line: 163]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - TimeoutResultAtElement [Line: 163]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - TimeoutResultAtElement [Line: 146]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - TimeoutResultAtElement [Line: 145]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - TimeoutResultAtElement [Line: 147]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 340 locations, 61 error locations. Started 1 CEGAR loops. OverallTime: 714172.8ms, OverallIterations: 121, TraceHistogramMax: 4, EmptinessCheckTime: 345.6ms, AutomataDifference: 376651.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 17452.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 6785 SDtfs, 33993 SDslu, 53319 SDs, 0 SdLazy, 118947 SolverSat, 9860 SolverUnsat, 14 SolverUnknown, 0 SolverNotchecked, 128254.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5673 GetRequests, 887 SyntacticMatches, 3 SemanticMatches, 4783 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88331 ImplicationChecksByTransitivity, 263328.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20278occurred in iteration=120, InterpolantAutomatonStates: 3375, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 23230.7ms AutomataMinimizationTime, 120 MinimizatonAttempts, 376486 StatesRemovedByMinimization, 116 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1679.6ms SsaConstructionTime, 9754.0ms SatisfiabilityAnalysisTime, 149300.6ms InterpolantComputationTime, 3847 NumberOfCodeBlocks, 3793 NumberOfCodeBlocksAsserted, 283 NumberOfCheckSat, 3622 ConstructedInterpolants, 169 QuantifiedInterpolants, 88123 SizeOfPredicates, 1580 NumberOfNonLiveVariables, 28083 ConjunctsInSsa, 2413 ConjunctsInUnsatCore, 225 InterpolantComputations, 43 PerfectInterpolantSequences, 546/1373 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown