/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-buffer-mult-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 14:56:27,992 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 14:56:27,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 14:56:28,035 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-07 14:56:28,036 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-07 14:56:28,038 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-07 14:56:28,040 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-07 14:56:28,043 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-07 14:56:28,045 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-07 14:56:28,046 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-07 14:56:28,048 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-07 14:56:28,049 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-07 14:56:28,050 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-07 14:56:28,051 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-07 14:56:28,053 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-07 14:56:28,055 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-07 14:56:28,056 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-07 14:56:28,057 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-07 14:56:28,059 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-07 14:56:28,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-07 14:56:28,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-07 14:56:28,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-07 14:56:28,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-07 14:56:28,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-07 14:56:28,072 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-07 14:56:28,077 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-07 14:56:28,078 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-07 14:56:28,079 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-07 14:56:28,080 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-07 14:56:28,082 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-07 14:56:28,082 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-07 14:56:28,083 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-07 14:56:28,084 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-07 14:56:28,084 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-07 14:56:28,088 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-07 14:56:28,089 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-07 14:56:28,092 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-07 14:56:28,178 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 14:56:28,179 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 14:56:28,180 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 14:56:28,180 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 14:56:28,184 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 14:56:28,185 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 14:56:28,185 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 14:56:28,185 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 14:56:28,186 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 14:56:28,186 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 14:56:28,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 14:56:28,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 14:56:28,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 14:56:28,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-07 14:56:28,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 14:56:28,189 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-07 14:56:28,189 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-07 14:56:28,190 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 14:56:28,190 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-07 14:56:28,190 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 14:56:28,191 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-07 14:56:28,191 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 14:56:28,192 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 14:56:28,192 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 14:56:28,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 14:56:28,192 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 14:56:28,193 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 14:56:28,193 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-07 14:56:28,193 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-07 14:56:28,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-07 14:56:28,194 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-07 14:56:28,194 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 14:56:28,194 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 14:56:28,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 14:56:28,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 14:56:28,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 14:56:28,698 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 14:56:28,699 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 14:56:28,700 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c [2021-10-07 14:56:28,793 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3fd97d31/1fa352ad84594c5fb6e483eab7188f97/FLAGbbf7b3ae7 [2021-10-07 14:56:29,480 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 14:56:29,481 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c [2021-10-07 14:56:29,490 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3fd97d31/1fa352ad84594c5fb6e483eab7188f97/FLAGbbf7b3ae7 [2021-10-07 14:56:29,849 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3fd97d31/1fa352ad84594c5fb6e483eab7188f97 [2021-10-07 14:56:29,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 14:56:29,862 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-07 14:56:29,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 14:56:29,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 14:56:29,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 14:56:29,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:56:29" (1/1) ... [2021-10-07 14:56:29,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@171f0476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:56:29, skipping insertion in model container [2021-10-07 14:56:29,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:56:29" (1/1) ... [2021-10-07 14:56:29,884 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 14:56:29,927 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 14:56:30,212 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-buffer-mult-alt.wvr.c[3424,3437] [2021-10-07 14:56:30,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 14:56:30,248 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 14:56:30,282 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-buffer-mult-alt.wvr.c[3424,3437] [2021-10-07 14:56:30,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 14:56:30,305 INFO L208 MainTranslator]: Completed translation [2021-10-07 14:56:30,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:56:30 WrapperNode [2021-10-07 14:56:30,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 14:56:30,307 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 14:56:30,307 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 14:56:30,307 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 14:56:30,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:56:30" (1/1) ... [2021-10-07 14:56:30,329 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:56:30" (1/1) ... [2021-10-07 14:56:30,378 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 14:56:30,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 14:56:30,379 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 14:56:30,379 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 14:56:30,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:56:30" (1/1) ... [2021-10-07 14:56:30,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:56:30" (1/1) ... [2021-10-07 14:56:30,409 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:56:30" (1/1) ... [2021-10-07 14:56:30,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:56:30" (1/1) ... [2021-10-07 14:56:30,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:56:30" (1/1) ... [2021-10-07 14:56:30,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:56:30" (1/1) ... [2021-10-07 14:56:30,463 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:56:30" (1/1) ... [2021-10-07 14:56:30,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 14:56:30,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 14:56:30,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 14:56:30,477 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 14:56:30,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:56:30" (1/1) ... [2021-10-07 14:56:30,494 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 14:56:30,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:56:30,528 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) [2021-10-07 14:56:30,562 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 [2021-10-07 14:56:30,621 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 14:56:30,621 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 14:56:30,622 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 14:56:30,622 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 14:56:30,622 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-07 14:56:30,622 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-07 14:56:30,622 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-07 14:56:30,623 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-07 14:56:30,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-07 14:56:30,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 14:56:30,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-07 14:56:30,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-07 14:56:30,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-07 14:56:30,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-07 14:56:30,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 14:56:30,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 14:56:30,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-07 14:56:30,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 14:56:30,630 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-07 14:56:32,079 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 14:56:32,079 INFO L299 CfgBuilder]: Removed 34 assume(true) statements. [2021-10-07 14:56:32,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:56:32 BoogieIcfgContainer [2021-10-07 14:56:32,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 14:56:32,086 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 14:56:32,087 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 14:56:32,096 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 14:56:32,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 02:56:29" (1/3) ... [2021-10-07 14:56:32,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6fc16e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:56:32, skipping insertion in model container [2021-10-07 14:56:32,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:56:30" (2/3) ... [2021-10-07 14:56:32,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6fc16e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:56:32, skipping insertion in model container [2021-10-07 14:56:32,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:56:32" (3/3) ... [2021-10-07 14:56:32,101 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt.wvr.c [2021-10-07 14:56:32,114 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-07 14:56:32,114 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 14:56:32,114 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2021-10-07 14:56:32,115 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 14:56:32,190 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,191 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,191 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,191 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,191 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,192 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,192 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,192 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,192 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,192 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,193 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,193 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,193 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,193 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,193 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,194 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,194 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,195 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,195 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,196 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,196 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,196 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,197 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,197 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,197 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,197 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,198 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,198 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,198 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,199 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,199 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,199 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,200 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,200 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,200 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,200 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,200 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,200 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,205 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,206 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,206 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,206 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,206 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,207 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,207 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,207 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,207 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,207 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,207 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,208 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,208 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,208 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,215 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,215 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,216 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,216 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,216 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,217 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,217 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,217 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,217 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,218 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,219 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,219 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,219 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,219 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,219 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,220 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,220 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,220 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,220 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,221 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,221 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,221 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,222 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,223 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,223 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,223 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,223 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,223 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,223 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,223 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,224 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,224 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,224 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,224 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,224 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,225 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,225 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,227 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,227 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,230 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,236 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,236 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,237 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,237 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,237 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,238 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,238 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,238 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,238 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,238 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,239 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,239 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,244 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,244 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,245 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,245 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,246 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,249 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,249 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,249 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,249 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,250 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,250 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,250 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,250 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,250 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,250 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,250 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,251 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,252 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,252 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,252 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,253 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,253 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,253 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,253 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,253 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,253 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,254 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,254 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,254 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,254 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,254 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,254 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,255 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,255 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,255 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,256 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,256 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,256 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,256 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,256 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,256 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,256 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,257 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,257 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,257 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,258 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,258 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,258 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,258 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,258 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,259 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,259 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,259 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,259 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,259 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,259 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,259 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,260 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,260 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,260 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,260 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,260 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,261 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,261 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,261 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,261 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,261 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,261 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,262 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,263 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,263 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,263 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,263 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,263 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,263 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,264 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,264 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,264 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,264 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,264 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,265 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,265 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,265 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,265 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,268 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,269 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,269 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,269 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,269 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,270 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,270 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,270 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,272 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,272 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,272 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,272 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,273 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,273 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,274 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,275 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,275 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,275 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,275 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,275 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,276 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,276 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,277 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,277 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,278 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,278 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,278 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,278 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:56:32,287 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-07 14:56:32,344 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 14:56:32,353 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 [2021-10-07 14:56:32,353 INFO L340 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2021-10-07 14:56:32,380 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 14:56:32,393 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 239 places, 244 transitions, 520 flow [2021-10-07 14:56:32,396 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 239 places, 244 transitions, 520 flow [2021-10-07 14:56:32,398 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 239 places, 244 transitions, 520 flow [2021-10-07 14:56:32,516 INFO L129 PetriNetUnfolder]: 18/240 cut-off events. [2021-10-07 14:56:32,516 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-07 14:56:32,525 INFO L84 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 240 events. 18/240 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 207 event pairs, 0 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 203. Up to 2 conditions per place. [2021-10-07 14:56:32,534 INFO L116 LiptonReduction]: Number of co-enabled transitions 3772 [2021-10-07 14:56:45,174 INFO L131 LiptonReduction]: Checked pairs total: 11566 [2021-10-07 14:56:45,175 INFO L133 LiptonReduction]: Total number of compositions: 240 [2021-10-07 14:56:45,185 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 66 places, 59 transitions, 150 flow [2021-10-07 14:56:45,571 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8190 states, 7312 states have (on average 4.861870897155361) internal successors, (35550), 8189 states have internal predecessors, (35550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:56:45,615 INFO L276 IsEmpty]: Start isEmpty. Operand has 8190 states, 7312 states have (on average 4.861870897155361) internal successors, (35550), 8189 states have internal predecessors, (35550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:56:45,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 14:56:45,620 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:45,621 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 14:56:45,622 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-07 14:56:45,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:45,629 INFO L82 PathProgramCache]: Analyzing trace with hash 34322, now seen corresponding path program 1 times [2021-10-07 14:56:45,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:45,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826155359] [2021-10-07 14:56:45,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:45,646 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:45,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:45,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:45,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:45,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826155359] [2021-10-07 14:56:45,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826155359] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:45,962 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:45,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-07 14:56:45,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552589610] [2021-10-07 14:56:45,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:56:45,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:45,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:56:45,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:56:46,025 INFO L87 Difference]: Start difference. First operand has 8190 states, 7312 states have (on average 4.861870897155361) internal successors, (35550), 8189 states have internal predecessors, (35550), 0 states have call successors, (0), 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) [2021-10-07 14:56:46,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:46,412 INFO L93 Difference]: Finished difference Result 9595 states and 41385 transitions. [2021-10-07 14:56:46,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:56:46,414 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 [2021-10-07 14:56:46,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:46,706 INFO L225 Difference]: With dead ends: 9595 [2021-10-07 14:56:46,706 INFO L226 Difference]: Without dead ends: 9595 [2021-10-07 14:56:46,708 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:56:46,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9595 states. [2021-10-07 14:56:47,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9595 to 4802. [2021-10-07 14:56:47,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4802 states, 4415 states have (on average 4.688335220838052) internal successors, (20699), 4801 states have internal predecessors, (20699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:56:47,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4802 states to 4802 states and 20699 transitions. [2021-10-07 14:56:47,376 INFO L78 Accepts]: Start accepts. Automaton has 4802 states and 20699 transitions. Word has length 2 [2021-10-07 14:56:47,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:47,378 INFO L470 AbstractCegarLoop]: Abstraction has 4802 states and 20699 transitions. [2021-10-07 14:56:47,379 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) [2021-10-07 14:56:47,379 INFO L276 IsEmpty]: Start isEmpty. Operand 4802 states and 20699 transitions. [2021-10-07 14:56:47,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 14:56:47,379 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:47,380 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 14:56:47,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-07 14:56:47,381 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-07 14:56:47,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:47,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1065661, now seen corresponding path program 1 times [2021-10-07 14:56:47,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:47,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311299845] [2021-10-07 14:56:47,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:47,383 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:47,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:47,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:47,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:47,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311299845] [2021-10-07 14:56:47,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311299845] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:56:47,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404857389] [2021-10-07 14:56:47,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:47,620 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:56:47,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:56:47,625 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) [2021-10-07 14:56:47,648 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 [2021-10-07 14:56:47,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:47,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 14:56:47,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:56:47,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:47,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404857389] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:56:47,777 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:56:47,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 3 [2021-10-07 14:56:47,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759490820] [2021-10-07 14:56:47,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 14:56:47,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:47,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 14:56:47,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:56:47,780 INFO L87 Difference]: Start difference. First operand 4802 states and 20699 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) [2021-10-07 14:56:48,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:48,429 INFO L93 Difference]: Finished difference Result 14390 states and 62077 transitions. [2021-10-07 14:56:48,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 14:56:48,430 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 [2021-10-07 14:56:48,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:48,640 INFO L225 Difference]: With dead ends: 14390 [2021-10-07 14:56:48,640 INFO L226 Difference]: Without dead ends: 14390 [2021-10-07 14:56:48,641 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.8ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:56:48,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14390 states. [2021-10-07 14:56:49,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14390 to 4804. [2021-10-07 14:56:49,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4804 states, 4417 states have (on average 4.6875707493774055) internal successors, (20705), 4803 states have internal predecessors, (20705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:56:49,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4804 states to 4804 states and 20705 transitions. [2021-10-07 14:56:49,378 INFO L78 Accepts]: Start accepts. Automaton has 4804 states and 20705 transitions. Word has length 3 [2021-10-07 14:56:49,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:49,378 INFO L470 AbstractCegarLoop]: Abstraction has 4804 states and 20705 transitions. [2021-10-07 14:56:49,379 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) [2021-10-07 14:56:49,379 INFO L276 IsEmpty]: Start isEmpty. Operand 4804 states and 20705 transitions. [2021-10-07 14:56:49,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 14:56:49,379 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:49,379 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 14:56:49,417 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-07 14:56:49,593 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 [2021-10-07 14:56:49,595 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-07 14:56:49,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:49,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1065682, now seen corresponding path program 1 times [2021-10-07 14:56:49,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:49,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239054892] [2021-10-07 14:56:49,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:49,598 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:49,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:49,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:49,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:49,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239054892] [2021-10-07 14:56:49,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239054892] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:49,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:49,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 14:56:49,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070859290] [2021-10-07 14:56:49,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:56:49,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:49,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:56:49,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:56:49,696 INFO L87 Difference]: Start difference. First operand 4804 states and 20705 transitions. Second operand has 3 states, 2 states have (on average 1.5) 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) [2021-10-07 14:56:49,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:49,779 INFO L93 Difference]: Finished difference Result 4802 states and 20701 transitions. [2021-10-07 14:56:49,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:56:49,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) 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 [2021-10-07 14:56:49,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:49,823 INFO L225 Difference]: With dead ends: 4802 [2021-10-07 14:56:49,823 INFO L226 Difference]: Without dead ends: 4802 [2021-10-07 14:56:49,824 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:56:49,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4802 states. [2021-10-07 14:56:50,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4802 to 4802. [2021-10-07 14:56:50,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4802 states, 4417 states have (on average 4.686665157346615) internal successors, (20701), 4801 states have internal predecessors, (20701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:56:50,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4802 states to 4802 states and 20701 transitions. [2021-10-07 14:56:50,190 INFO L78 Accepts]: Start accepts. Automaton has 4802 states and 20701 transitions. Word has length 3 [2021-10-07 14:56:50,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:50,191 INFO L470 AbstractCegarLoop]: Abstraction has 4802 states and 20701 transitions. [2021-10-07 14:56:50,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) 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) [2021-10-07 14:56:50,191 INFO L276 IsEmpty]: Start isEmpty. Operand 4802 states and 20701 transitions. [2021-10-07 14:56:50,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 14:56:50,192 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:50,192 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-07 14:56:50,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-07 14:56:50,193 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-07 14:56:50,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:50,194 INFO L82 PathProgramCache]: Analyzing trace with hash 33037170, now seen corresponding path program 2 times [2021-10-07 14:56:50,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:50,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526179773] [2021-10-07 14:56:50,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:50,197 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:50,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:50,328 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:50,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:50,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526179773] [2021-10-07 14:56:50,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526179773] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:56:50,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729101656] [2021-10-07 14:56:50,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:56:50,330 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:56:50,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:56:50,331 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) [2021-10-07 14:56:50,341 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 [2021-10-07 14:56:50,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 14:56:50,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:56:50,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 14:56:50,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:56:50,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 14:56:50,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729101656] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:50,441 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:56:50,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-07 14:56:50,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395985397] [2021-10-07 14:56:50,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:56:50,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:50,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:56:50,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 14:56:50,444 INFO L87 Difference]: Start difference. First operand 4802 states and 20701 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) [2021-10-07 14:56:50,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:50,525 INFO L93 Difference]: Finished difference Result 4801 states and 20700 transitions. [2021-10-07 14:56:50,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:56:50,525 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 [2021-10-07 14:56:50,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:50,655 INFO L225 Difference]: With dead ends: 4801 [2021-10-07 14:56:50,655 INFO L226 Difference]: Without dead ends: 4801 [2021-10-07 14:56:50,656 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 11.2ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 14:56:50,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4801 states. [2021-10-07 14:56:50,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4801 to 4799. [2021-10-07 14:56:50,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4799 states, 4415 states have (on average 4.687655719139298) internal successors, (20696), 4798 states have internal predecessors, (20696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:56:50,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4799 states to 4799 states and 20696 transitions. [2021-10-07 14:56:50,977 INFO L78 Accepts]: Start accepts. Automaton has 4799 states and 20696 transitions. Word has length 4 [2021-10-07 14:56:50,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:50,977 INFO L470 AbstractCegarLoop]: Abstraction has 4799 states and 20696 transitions. [2021-10-07 14:56:50,978 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) [2021-10-07 14:56:50,978 INFO L276 IsEmpty]: Start isEmpty. Operand 4799 states and 20696 transitions. [2021-10-07 14:56:50,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 14:56:50,978 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:50,978 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2021-10-07 14:56:51,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-10-07 14:56:51,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:56:51,193 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-07 14:56:51,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:51,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1024786496, now seen corresponding path program 1 times [2021-10-07 14:56:51,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:51,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913590295] [2021-10-07 14:56:51,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:51,196 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:51,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:51,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:51,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913590295] [2021-10-07 14:56:51,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913590295] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:56:51,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205963588] [2021-10-07 14:56:51,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:51,278 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:56:51,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:56:51,285 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) [2021-10-07 14:56:51,318 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 [2021-10-07 14:56:51,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:51,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 14:56:51,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:56:51,417 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:51,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205963588] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:56:51,418 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:56:51,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-10-07 14:56:51,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217809480] [2021-10-07 14:56:51,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 14:56:51,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:51,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 14:56:51,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-07 14:56:51,421 INFO L87 Difference]: Start difference. First operand 4799 states and 20696 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) [2021-10-07 14:56:51,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:51,906 INFO L93 Difference]: Finished difference Result 19182 states and 82762 transitions. [2021-10-07 14:56:51,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 14:56:51,906 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 [2021-10-07 14:56:51,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:52,196 INFO L225 Difference]: With dead ends: 19182 [2021-10-07 14:56:52,196 INFO L226 Difference]: Without dead ends: 19182 [2021-10-07 14:56:52,197 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 11.8ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-07 14:56:52,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19182 states. [2021-10-07 14:56:52,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19182 to 4800. [2021-10-07 14:56:52,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4800 states, 4416 states have (on average 4.687047101449275) internal successors, (20698), 4799 states have internal predecessors, (20698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:56:52,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4800 states to 4800 states and 20698 transitions. [2021-10-07 14:56:52,786 INFO L78 Accepts]: Start accepts. Automaton has 4800 states and 20698 transitions. Word has length 5 [2021-10-07 14:56:52,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:52,786 INFO L470 AbstractCegarLoop]: Abstraction has 4800 states and 20698 transitions. [2021-10-07 14:56:52,786 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) [2021-10-07 14:56:52,787 INFO L276 IsEmpty]: Start isEmpty. Operand 4800 states and 20698 transitions. [2021-10-07 14:56:52,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 14:56:52,787 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:52,787 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 14:56:52,832 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 [2021-10-07 14:56:53,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:56:53,002 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-07 14:56:53,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:53,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1024783105, now seen corresponding path program 1 times [2021-10-07 14:56:53,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:53,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394711844] [2021-10-07 14:56:53,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:53,005 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:53,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:53,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:53,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:53,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394711844] [2021-10-07 14:56:53,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394711844] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:53,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:53,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-07 14:56:53,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726335086] [2021-10-07 14:56:53,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:56:53,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:53,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:56:53,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:56:53,044 INFO L87 Difference]: Start difference. First operand 4800 states and 20698 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2021-10-07 14:56:53,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:53,322 INFO L93 Difference]: Finished difference Result 8212 states and 35327 transitions. [2021-10-07 14:56:53,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:56:53,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 5 [2021-10-07 14:56:53,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:53,479 INFO L225 Difference]: With dead ends: 8212 [2021-10-07 14:56:53,480 INFO L226 Difference]: Without dead ends: 8212 [2021-10-07 14:56:53,486 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 [2021-10-07 14:56:53,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8212 states. [2021-10-07 14:56:53,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8212 to 5490. [2021-10-07 14:56:53,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5490 states, 5106 states have (on average 4.916568742655699) internal successors, (25104), 5489 states have internal predecessors, (25104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:56:54,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5490 states to 5490 states and 25104 transitions. [2021-10-07 14:56:54,006 INFO L78 Accepts]: Start accepts. Automaton has 5490 states and 25104 transitions. Word has length 5 [2021-10-07 14:56:54,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:54,008 INFO L470 AbstractCegarLoop]: Abstraction has 5490 states and 25104 transitions. [2021-10-07 14:56:54,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2021-10-07 14:56:54,008 INFO L276 IsEmpty]: Start isEmpty. Operand 5490 states and 25104 transitions. [2021-10-07 14:56:54,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 14:56:54,008 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:54,009 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 14:56:54,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-07 14:56:54,009 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-07 14:56:54,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:54,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1024782981, now seen corresponding path program 1 times [2021-10-07 14:56:54,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:54,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467858913] [2021-10-07 14:56:54,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:54,011 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:54,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:54,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:54,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:54,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467858913] [2021-10-07 14:56:54,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467858913] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:54,099 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:54,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 14:56:54,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657598033] [2021-10-07 14:56:54,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:56:54,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:54,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:56:54,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:56:54,104 INFO L87 Difference]: Start difference. First operand 5490 states and 25104 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) [2021-10-07 14:56:54,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:54,425 INFO L93 Difference]: Finished difference Result 6533 states and 28767 transitions. [2021-10-07 14:56:54,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:56:54,426 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 5 [2021-10-07 14:56:54,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:54,515 INFO L225 Difference]: With dead ends: 6533 [2021-10-07 14:56:54,515 INFO L226 Difference]: Without dead ends: 6515 [2021-10-07 14:56:54,516 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:56:54,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6515 states. [2021-10-07 14:56:54,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6515 to 6290. [2021-10-07 14:56:54,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6290 states, 5883 states have (on average 4.779704232534421) internal successors, (28119), 6289 states have internal predecessors, (28119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:56:54,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6290 states to 6290 states and 28119 transitions. [2021-10-07 14:56:54,827 INFO L78 Accepts]: Start accepts. Automaton has 6290 states and 28119 transitions. Word has length 5 [2021-10-07 14:56:54,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:54,828 INFO L470 AbstractCegarLoop]: Abstraction has 6290 states and 28119 transitions. [2021-10-07 14:56:54,828 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) [2021-10-07 14:56:54,828 INFO L276 IsEmpty]: Start isEmpty. Operand 6290 states and 28119 transitions. [2021-10-07 14:56:54,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-07 14:56:54,829 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:54,829 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2021-10-07 14:56:54,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-07 14:56:54,830 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-07 14:56:54,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:54,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1703612440, now seen corresponding path program 2 times [2021-10-07 14:56:54,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:54,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713059826] [2021-10-07 14:56:54,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:54,831 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:54,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:54,883 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:54,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:54,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713059826] [2021-10-07 14:56:54,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713059826] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:56:54,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644649848] [2021-10-07 14:56:54,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:56:54,885 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:56:54,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:56:54,887 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) [2021-10-07 14:56:54,911 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 [2021-10-07 14:56:54,969 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 14:56:54,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:56:54,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 14:56:54,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:56:55,002 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 14:56:55,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644649848] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:55,003 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:56:55,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2021-10-07 14:56:55,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641254355] [2021-10-07 14:56:55,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:56:55,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:55,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:56:55,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 14:56:55,005 INFO L87 Difference]: Start difference. First operand 6290 states and 28119 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) [2021-10-07 14:56:55,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:55,104 INFO L93 Difference]: Finished difference Result 4729 states and 21050 transitions. [2021-10-07 14:56:55,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:56:55,105 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 [2021-10-07 14:56:55,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:55,273 INFO L225 Difference]: With dead ends: 4729 [2021-10-07 14:56:55,273 INFO L226 Difference]: Without dead ends: 4729 [2021-10-07 14:56:55,281 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 25.9ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-07 14:56:55,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4729 states. [2021-10-07 14:56:55,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4729 to 4723. [2021-10-07 14:56:55,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4723 states, 4470 states have (on average 4.70648769574944) internal successors, (21038), 4722 states have internal predecessors, (21038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:56:55,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4723 states to 4723 states and 21038 transitions. [2021-10-07 14:56:55,481 INFO L78 Accepts]: Start accepts. Automaton has 4723 states and 21038 transitions. Word has length 6 [2021-10-07 14:56:55,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:55,481 INFO L470 AbstractCegarLoop]: Abstraction has 4723 states and 21038 transitions. [2021-10-07 14:56:55,481 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) [2021-10-07 14:56:55,482 INFO L276 IsEmpty]: Start isEmpty. Operand 4723 states and 21038 transitions. [2021-10-07 14:56:55,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-07 14:56:55,482 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:55,482 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-07 14:56:55,517 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 [2021-10-07 14:56:55,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:56:55,696 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-07 14:56:55,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:55,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1684632058, now seen corresponding path program 1 times [2021-10-07 14:56:55,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:55,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53312549] [2021-10-07 14:56:55,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:55,698 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:55,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:55,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:55,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:55,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53312549] [2021-10-07 14:56:55,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53312549] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:56:55,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752380685] [2021-10-07 14:56:55,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:55,753 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:56:55,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:56:55,754 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) [2021-10-07 14:56:55,765 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 [2021-10-07 14:56:55,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:55,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 14:56:55,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:56:55,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:56:55,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752380685] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:55,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:56:55,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-07 14:56:55,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730190561] [2021-10-07 14:56:55,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:56:55,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:55,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:56:55,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-07 14:56:55,865 INFO L87 Difference]: Start difference. First operand 4723 states and 21038 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:56:55,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:55,915 INFO L93 Difference]: Finished difference Result 3619 states and 15626 transitions. [2021-10-07 14:56:55,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:56:55,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 [2021-10-07 14:56:55,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:55,942 INFO L225 Difference]: With dead ends: 3619 [2021-10-07 14:56:55,942 INFO L226 Difference]: Without dead ends: 3619 [2021-10-07 14:56:55,943 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 15.8ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-07 14:56:55,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3619 states. [2021-10-07 14:56:56,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3619 to 3619. [2021-10-07 14:56:56,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3619 states, 3471 states have (on average 4.50187265917603) internal successors, (15626), 3618 states have internal predecessors, (15626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:56:56,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3619 states to 3619 states and 15626 transitions. [2021-10-07 14:56:56,365 INFO L78 Accepts]: Start accepts. Automaton has 3619 states and 15626 transitions. Word has length 6 [2021-10-07 14:56:56,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:56,365 INFO L470 AbstractCegarLoop]: Abstraction has 3619 states and 15626 transitions. [2021-10-07 14:56:56,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:56:56,366 INFO L276 IsEmpty]: Start isEmpty. Operand 3619 states and 15626 transitions. [2021-10-07 14:56:56,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 14:56:56,367 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:56,367 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:56:56,406 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 [2021-10-07 14:56:56,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:56:56,575 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-07 14:56:56,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:56,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1269132510, now seen corresponding path program 1 times [2021-10-07 14:56:56,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:56,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733336842] [2021-10-07 14:56:56,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:56,577 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:56,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:56,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:56,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:56,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733336842] [2021-10-07 14:56:56,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733336842] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:56,620 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:56,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-07 14:56:56,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535812967] [2021-10-07 14:56:56,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:56:56,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:56,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:56:56,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:56:56,622 INFO L87 Difference]: Start difference. First operand 3619 states and 15626 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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) [2021-10-07 14:56:56,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:56,718 INFO L93 Difference]: Finished difference Result 4337 states and 18098 transitions. [2021-10-07 14:56:56,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:56:56,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 [2021-10-07 14:56:56,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:56,745 INFO L225 Difference]: With dead ends: 4337 [2021-10-07 14:56:56,746 INFO L226 Difference]: Without dead ends: 4194 [2021-10-07 14:56:56,746 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:56:56,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4194 states. [2021-10-07 14:56:56,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4194 to 4120. [2021-10-07 14:56:56,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4120 states, 3964 states have (on average 4.413975782038345) internal successors, (17497), 4119 states have internal predecessors, (17497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:56:56,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4120 states to 4120 states and 17497 transitions. [2021-10-07 14:56:56,904 INFO L78 Accepts]: Start accepts. Automaton has 4120 states and 17497 transitions. Word has length 7 [2021-10-07 14:56:56,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:56,905 INFO L470 AbstractCegarLoop]: Abstraction has 4120 states and 17497 transitions. [2021-10-07 14:56:56,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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) [2021-10-07 14:56:56,905 INFO L276 IsEmpty]: Start isEmpty. Operand 4120 states and 17497 transitions. [2021-10-07 14:56:56,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 14:56:56,906 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:56,906 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:56:56,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-07 14:56:56,906 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-07 14:56:56,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:56,907 INFO L82 PathProgramCache]: Analyzing trace with hash 785835702, now seen corresponding path program 1 times [2021-10-07 14:56:56,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:56,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711490593] [2021-10-07 14:56:56,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:56,908 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:56,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:56,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:56:56,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:56,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711490593] [2021-10-07 14:56:56,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711490593] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:56,963 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:56,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 14:56:56,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246005431] [2021-10-07 14:56:56,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:56:56,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:56,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:56:56,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:56:56,965 INFO L87 Difference]: Start difference. First operand 4120 states and 17497 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) [2021-10-07 14:56:57,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:57,011 INFO L93 Difference]: Finished difference Result 3614 states and 15290 transitions. [2021-10-07 14:56:57,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:56:57,012 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 [2021-10-07 14:56:57,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:57,031 INFO L225 Difference]: With dead ends: 3614 [2021-10-07 14:56:57,031 INFO L226 Difference]: Without dead ends: 3614 [2021-10-07 14:56:57,032 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 [2021-10-07 14:56:57,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3614 states. [2021-10-07 14:56:57,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3614 to 3614. [2021-10-07 14:56:57,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3614 states, 3488 states have (on average 4.383600917431193) internal successors, (15290), 3613 states have internal predecessors, (15290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:56:57,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3614 states to 3614 states and 15290 transitions. [2021-10-07 14:56:57,275 INFO L78 Accepts]: Start accepts. Automaton has 3614 states and 15290 transitions. Word has length 8 [2021-10-07 14:56:57,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:57,275 INFO L470 AbstractCegarLoop]: Abstraction has 3614 states and 15290 transitions. [2021-10-07 14:56:57,276 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) [2021-10-07 14:56:57,276 INFO L276 IsEmpty]: Start isEmpty. Operand 3614 states and 15290 transitions. [2021-10-07 14:56:57,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 14:56:57,277 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:57,277 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:56:57,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-07 14:56:57,277 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-07 14:56:57,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:57,278 INFO L82 PathProgramCache]: Analyzing trace with hash 785835846, now seen corresponding path program 1 times [2021-10-07 14:56:57,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:57,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679205879] [2021-10-07 14:56:57,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:57,279 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:57,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:57,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:56:57,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:57,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679205879] [2021-10-07 14:56:57,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679205879] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:57,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:57,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-07 14:56:57,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575734211] [2021-10-07 14:56:57,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:56:57,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:57,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:56:57,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:56:57,314 INFO L87 Difference]: Start difference. First operand 3614 states and 15290 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) [2021-10-07 14:56:57,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:57,397 INFO L93 Difference]: Finished difference Result 5692 states and 24252 transitions. [2021-10-07 14:56:57,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:56:57,398 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 [2021-10-07 14:56:57,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:57,435 INFO L225 Difference]: With dead ends: 5692 [2021-10-07 14:56:57,435 INFO L226 Difference]: Without dead ends: 5692 [2021-10-07 14:56:57,435 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 [2021-10-07 14:56:57,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5692 states. [2021-10-07 14:56:57,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5692 to 4120. [2021-10-07 14:56:57,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4120 states, 3994 states have (on average 4.629694541812719) internal successors, (18491), 4119 states have internal predecessors, (18491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:56:57,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4120 states to 4120 states and 18491 transitions. [2021-10-07 14:56:57,758 INFO L78 Accepts]: Start accepts. Automaton has 4120 states and 18491 transitions. Word has length 8 [2021-10-07 14:56:57,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:57,759 INFO L470 AbstractCegarLoop]: Abstraction has 4120 states and 18491 transitions. [2021-10-07 14:56:57,759 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) [2021-10-07 14:56:57,759 INFO L276 IsEmpty]: Start isEmpty. Operand 4120 states and 18491 transitions. [2021-10-07 14:56:57,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 14:56:57,761 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:57,761 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:56:57,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-07 14:56:57,762 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-07 14:56:57,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:57,762 INFO L82 PathProgramCache]: Analyzing trace with hash 785835698, now seen corresponding path program 1 times [2021-10-07 14:56:57,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:57,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424823652] [2021-10-07 14:56:57,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:57,763 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:57,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:57,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:56:57,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:57,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424823652] [2021-10-07 14:56:57,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424823652] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:57,804 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:57,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-07 14:56:57,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836054506] [2021-10-07 14:56:57,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:56:57,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:57,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:56:57,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:56:57,806 INFO L87 Difference]: Start difference. First operand 4120 states and 18491 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) [2021-10-07 14:56:57,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:57,867 INFO L93 Difference]: Finished difference Result 3614 states and 15778 transitions. [2021-10-07 14:56:57,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:56:57,868 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 [2021-10-07 14:56:57,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:57,894 INFO L225 Difference]: With dead ends: 3614 [2021-10-07 14:56:57,894 INFO L226 Difference]: Without dead ends: 3614 [2021-10-07 14:56:57,899 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:56:57,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3614 states. [2021-10-07 14:56:58,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3614 to 3614. [2021-10-07 14:56:58,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3614 states, 3518 states have (on average 4.484934621944286) internal successors, (15778), 3613 states have internal predecessors, (15778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:56:58,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3614 states to 3614 states and 15778 transitions. [2021-10-07 14:56:58,070 INFO L78 Accepts]: Start accepts. Automaton has 3614 states and 15778 transitions. Word has length 8 [2021-10-07 14:56:58,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:58,071 INFO L470 AbstractCegarLoop]: Abstraction has 3614 states and 15778 transitions. [2021-10-07 14:56:58,071 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) [2021-10-07 14:56:58,071 INFO L276 IsEmpty]: Start isEmpty. Operand 3614 states and 15778 transitions. [2021-10-07 14:56:58,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 14:56:58,073 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:58,073 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:56:58,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-07 14:56:58,073 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-07 14:56:58,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:58,074 INFO L82 PathProgramCache]: Analyzing trace with hash -271113635, now seen corresponding path program 1 times [2021-10-07 14:56:58,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:58,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100073140] [2021-10-07 14:56:58,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:58,075 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:58,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:56:58,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:58,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100073140] [2021-10-07 14:56:58,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100073140] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:56:58,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653135263] [2021-10-07 14:56:58,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:58,140 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:56:58,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:56:58,143 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) [2021-10-07 14:56:58,161 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 [2021-10-07 14:56:58,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:58,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 14:56:58,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:56:58,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:56:58,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653135263] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:56:58,281 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:56:58,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-10-07 14:56:58,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622543931] [2021-10-07 14:56:58,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 14:56:58,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:58,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 14:56:58,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-07 14:56:58,285 INFO L87 Difference]: Start difference. First operand 3614 states and 15778 transitions. Second operand has 7 states, 6 states have (on average 2.5) 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) [2021-10-07 14:56:58,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:58,435 INFO L93 Difference]: Finished difference Result 6652 states and 28689 transitions. [2021-10-07 14:56:58,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 14:56:58,435 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) 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 8 [2021-10-07 14:56:58,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:58,478 INFO L225 Difference]: With dead ends: 6652 [2021-10-07 14:56:58,478 INFO L226 Difference]: Without dead ends: 6652 [2021-10-07 14:56:58,478 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 23.9ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-07 14:56:58,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6652 states. [2021-10-07 14:56:58,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6652 to 4514. [2021-10-07 14:56:58,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4514 states, 4418 states have (on average 4.663648709823449) internal successors, (20604), 4513 states have internal predecessors, (20604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:56:58,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4514 states to 4514 states and 20604 transitions. [2021-10-07 14:56:58,914 INFO L78 Accepts]: Start accepts. Automaton has 4514 states and 20604 transitions. Word has length 8 [2021-10-07 14:56:58,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:58,916 INFO L470 AbstractCegarLoop]: Abstraction has 4514 states and 20604 transitions. [2021-10-07 14:56:58,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) 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) [2021-10-07 14:56:58,916 INFO L276 IsEmpty]: Start isEmpty. Operand 4514 states and 20604 transitions. [2021-10-07 14:56:58,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 14:56:58,917 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:58,917 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:56:58,958 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 [2021-10-07 14:56:59,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-07 14:56:59,136 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-07 14:56:59,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:59,137 INFO L82 PathProgramCache]: Analyzing trace with hash -271113597, now seen corresponding path program 1 times [2021-10-07 14:56:59,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:59,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6112223] [2021-10-07 14:56:59,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:59,140 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:59,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:59,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:59,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:59,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6112223] [2021-10-07 14:56:59,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6112223] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:56:59,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557664459] [2021-10-07 14:56:59,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:59,209 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:56:59,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:56:59,210 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) [2021-10-07 14:56:59,237 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 [2021-10-07 14:56:59,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:59,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 14:56:59,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:56:59,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:59,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557664459] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:56:59,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:56:59,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-07 14:56:59,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962409824] [2021-10-07 14:56:59,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-07 14:56:59,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:59,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-07 14:56:59,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-07 14:56:59,373 INFO L87 Difference]: Start difference. First operand 4514 states and 20604 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 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) [2021-10-07 14:56:59,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:59,544 INFO L93 Difference]: Finished difference Result 8131 states and 35663 transitions. [2021-10-07 14:56:59,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 14:56:59,545 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 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 8 [2021-10-07 14:56:59,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:59,593 INFO L225 Difference]: With dead ends: 8131 [2021-10-07 14:56:59,593 INFO L226 Difference]: Without dead ends: 8067 [2021-10-07 14:56:59,594 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 51.4ms TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:56:59,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8067 states. [2021-10-07 14:56:59,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8067 to 5579. [2021-10-07 14:56:59,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5579 states, 5483 states have (on average 4.696698887470363) internal successors, (25752), 5578 states have internal predecessors, (25752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:56:59,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5579 states to 5579 states and 25752 transitions. [2021-10-07 14:56:59,836 INFO L78 Accepts]: Start accepts. Automaton has 5579 states and 25752 transitions. Word has length 8 [2021-10-07 14:56:59,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:59,836 INFO L470 AbstractCegarLoop]: Abstraction has 5579 states and 25752 transitions. [2021-10-07 14:56:59,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 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) [2021-10-07 14:56:59,837 INFO L276 IsEmpty]: Start isEmpty. Operand 5579 states and 25752 transitions. [2021-10-07 14:56:59,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 14:56:59,838 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:59,838 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:56:59,877 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 [2021-10-07 14:57:00,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-07 14:57:00,045 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-07 14:57:00,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:00,046 INFO L82 PathProgramCache]: Analyzing trace with hash -772574482, now seen corresponding path program 2 times [2021-10-07 14:57:00,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:00,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908029607] [2021-10-07 14:57:00,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:00,048 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:00,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:00,093 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 14:57:00,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:00,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908029607] [2021-10-07 14:57:00,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908029607] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:57:00,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979652387] [2021-10-07 14:57:00,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:57:00,094 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:57:00,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:57:00,095 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) [2021-10-07 14:57:00,098 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 [2021-10-07 14:57:00,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 14:57:00,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:57:00,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 14:57:00,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:57:00,210 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 14:57:00,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979652387] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:00,211 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:57:00,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2021-10-07 14:57:00,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457714834] [2021-10-07 14:57:00,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:57:00,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:00,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:57:00,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-07 14:57:00,212 INFO L87 Difference]: Start difference. First operand 5579 states and 25752 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) [2021-10-07 14:57:00,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:00,433 INFO L93 Difference]: Finished difference Result 5129 states and 23331 transitions. [2021-10-07 14:57:00,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:57:00,434 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 9 [2021-10-07 14:57:00,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:00,468 INFO L225 Difference]: With dead ends: 5129 [2021-10-07 14:57:00,469 INFO L226 Difference]: Without dead ends: 5129 [2021-10-07 14:57:00,469 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.7ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-07 14:57:00,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5129 states. [2021-10-07 14:57:00,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5129 to 5129. [2021-10-07 14:57:00,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5129 states, 5063 states have (on average 4.608137467904404) internal successors, (23331), 5128 states have internal predecessors, (23331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:00,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5129 states to 5129 states and 23331 transitions. [2021-10-07 14:57:00,665 INFO L78 Accepts]: Start accepts. Automaton has 5129 states and 23331 transitions. Word has length 9 [2021-10-07 14:57:00,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:00,666 INFO L470 AbstractCegarLoop]: Abstraction has 5129 states and 23331 transitions. [2021-10-07 14:57:00,666 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) [2021-10-07 14:57:00,666 INFO L276 IsEmpty]: Start isEmpty. Operand 5129 states and 23331 transitions. [2021-10-07 14:57:00,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 14:57:00,672 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:00,672 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:57:00,715 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-10-07 14:57:00,887 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,SelfDestructingSolverStorable15 [2021-10-07 14:57:00,888 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-07 14:57:00,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:00,889 INFO L82 PathProgramCache]: Analyzing trace with hash -726005744, now seen corresponding path program 1 times [2021-10-07 14:57:00,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:00,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609465212] [2021-10-07 14:57:00,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:00,890 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:00,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:00,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:00,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:00,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609465212] [2021-10-07 14:57:00,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609465212] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:57:00,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161310693] [2021-10-07 14:57:00,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:00,981 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:57:00,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:57:00,982 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) [2021-10-07 14:57:00,987 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 [2021-10-07 14:57:01,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:01,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 14:57:01,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:57:01,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:57:01,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161310693] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:01,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:57:01,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 8 [2021-10-07 14:57:01,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765146381] [2021-10-07 14:57:01,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 14:57:01,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:01,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 14:57:01,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-07 14:57:01,133 INFO L87 Difference]: Start difference. First operand 5129 states and 23331 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2021-10-07 14:57:01,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:01,244 INFO L93 Difference]: Finished difference Result 5897 states and 26013 transitions. [2021-10-07 14:57:01,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 14:57:01,244 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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 [2021-10-07 14:57:01,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:01,279 INFO L225 Difference]: With dead ends: 5897 [2021-10-07 14:57:01,279 INFO L226 Difference]: Without dead ends: 5897 [2021-10-07 14:57:01,279 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 49.9ms TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:57:01,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5897 states. [2021-10-07 14:57:01,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5897 to 4411. [2021-10-07 14:57:01,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4411 states, 4366 states have (on average 4.595281722400366) internal successors, (20063), 4410 states have internal predecessors, (20063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:01,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4411 states to 4411 states and 20063 transitions. [2021-10-07 14:57:01,582 INFO L78 Accepts]: Start accepts. Automaton has 4411 states and 20063 transitions. Word has length 10 [2021-10-07 14:57:01,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:01,583 INFO L470 AbstractCegarLoop]: Abstraction has 4411 states and 20063 transitions. [2021-10-07 14:57:01,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2021-10-07 14:57:01,583 INFO L276 IsEmpty]: Start isEmpty. Operand 4411 states and 20063 transitions. [2021-10-07 14:57:01,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 14:57:01,584 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:01,584 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:57:01,623 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 [2021-10-07 14:57:01,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:57:01,796 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-07 14:57:01,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:01,797 INFO L82 PathProgramCache]: Analyzing trace with hash -726005784, now seen corresponding path program 1 times [2021-10-07 14:57:01,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:01,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253248542] [2021-10-07 14:57:01,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:01,798 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:01,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:01,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:57:01,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:01,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253248542] [2021-10-07 14:57:01,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253248542] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:57:01,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502282168] [2021-10-07 14:57:01,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:01,869 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:57:01,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:57:01,870 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) [2021-10-07 14:57:01,887 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 [2021-10-07 14:57:01,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:01,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 14:57:01,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:57:02,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:02,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502282168] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:57:02,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:57:02,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5] total 8 [2021-10-07 14:57:02,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154928390] [2021-10-07 14:57:02,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-07 14:57:02,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:02,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-07 14:57:02,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-07 14:57:02,056 INFO L87 Difference]: Start difference. First operand 4411 states and 20063 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2021-10-07 14:57:02,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:02,427 INFO L93 Difference]: Finished difference Result 12651 states and 55338 transitions. [2021-10-07 14:57:02,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 14:57:02,428 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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 10 [2021-10-07 14:57:02,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:02,505 INFO L225 Difference]: With dead ends: 12651 [2021-10-07 14:57:02,505 INFO L226 Difference]: Without dead ends: 12563 [2021-10-07 14:57:02,506 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 104.0ms TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-10-07 14:57:02,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12563 states. [2021-10-07 14:57:02,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12563 to 7633. [2021-10-07 14:57:02,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7633 states, 7588 states have (on average 4.75830258302583) internal successors, (36106), 7632 states have internal predecessors, (36106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:02,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7633 states to 7633 states and 36106 transitions. [2021-10-07 14:57:02,973 INFO L78 Accepts]: Start accepts. Automaton has 7633 states and 36106 transitions. Word has length 10 [2021-10-07 14:57:02,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:02,973 INFO L470 AbstractCegarLoop]: Abstraction has 7633 states and 36106 transitions. [2021-10-07 14:57:02,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2021-10-07 14:57:02,974 INFO L276 IsEmpty]: Start isEmpty. Operand 7633 states and 36106 transitions. [2021-10-07 14:57:02,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 14:57:02,975 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:02,975 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:57:03,000 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 [2021-10-07 14:57:03,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-07 14:57:03,176 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-07 14:57:03,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:03,178 INFO L82 PathProgramCache]: Analyzing trace with hash -732276121, now seen corresponding path program 1 times [2021-10-07 14:57:03,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:03,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988996762] [2021-10-07 14:57:03,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:03,179 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:03,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:03,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:03,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:03,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988996762] [2021-10-07 14:57:03,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988996762] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:57:03,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932668386] [2021-10-07 14:57:03,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:03,559 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:57:03,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:57:03,563 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) [2021-10-07 14:57:03,590 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 [2021-10-07 14:57:03,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:03,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 14:57:03,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:57:03,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:57:03,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932668386] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:03,733 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:57:03,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2021-10-07 14:57:03,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167575214] [2021-10-07 14:57:03,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:57:03,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:03,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:57:03,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-07 14:57:03,735 INFO L87 Difference]: Start difference. First operand 7633 states and 36106 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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) [2021-10-07 14:57:03,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:03,858 INFO L93 Difference]: Finished difference Result 8219 states and 37074 transitions. [2021-10-07 14:57:03,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:57:03,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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 [2021-10-07 14:57:03,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:03,914 INFO L225 Difference]: With dead ends: 8219 [2021-10-07 14:57:03,914 INFO L226 Difference]: Without dead ends: 8129 [2021-10-07 14:57:03,915 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 137.1ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-07 14:57:03,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8129 states. [2021-10-07 14:57:04,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8129 to 7377. [2021-10-07 14:57:04,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7377 states, 7332 states have (on average 4.645117294053464) internal successors, (34058), 7376 states have internal predecessors, (34058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:04,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7377 states to 7377 states and 34058 transitions. [2021-10-07 14:57:04,354 INFO L78 Accepts]: Start accepts. Automaton has 7377 states and 34058 transitions. Word has length 11 [2021-10-07 14:57:04,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:04,355 INFO L470 AbstractCegarLoop]: Abstraction has 7377 states and 34058 transitions. [2021-10-07 14:57:04,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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) [2021-10-07 14:57:04,355 INFO L276 IsEmpty]: Start isEmpty. Operand 7377 states and 34058 transitions. [2021-10-07 14:57:04,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 14:57:04,356 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:04,356 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2021-10-07 14:57:04,381 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 [2021-10-07 14:57:04,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:57:04,557 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-07 14:57:04,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:04,558 INFO L82 PathProgramCache]: Analyzing trace with hash 585258543, now seen corresponding path program 2 times [2021-10-07 14:57:04,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:04,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865767706] [2021-10-07 14:57:04,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:04,560 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:04,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:04,629 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:04,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:04,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865767706] [2021-10-07 14:57:04,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865767706] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:57:04,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524751564] [2021-10-07 14:57:04,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:57:04,631 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:57:04,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:57:04,632 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) [2021-10-07 14:57:04,634 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 [2021-10-07 14:57:04,727 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 14:57:04,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:57:04,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 14:57:04,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:57:04,763 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-07 14:57:04,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524751564] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:04,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:57:04,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2021-10-07 14:57:04,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179774021] [2021-10-07 14:57:04,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:57:04,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:04,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:57:04,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-07 14:57:04,765 INFO L87 Difference]: Start difference. First operand 7377 states and 34058 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) [2021-10-07 14:57:04,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:04,845 INFO L93 Difference]: Finished difference Result 6707 states and 31000 transitions. [2021-10-07 14:57:04,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:57:04,846 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 11 [2021-10-07 14:57:04,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:04,889 INFO L225 Difference]: With dead ends: 6707 [2021-10-07 14:57:04,889 INFO L226 Difference]: Without dead ends: 6607 [2021-10-07 14:57:04,889 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 28.4ms TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-07 14:57:04,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6607 states. [2021-10-07 14:57:05,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6607 to 5199. [2021-10-07 14:57:05,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5199 states, 5175 states have (on average 4.534106280193237) internal successors, (23464), 5198 states have internal predecessors, (23464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:05,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5199 states to 5199 states and 23464 transitions. [2021-10-07 14:57:05,052 INFO L78 Accepts]: Start accepts. Automaton has 5199 states and 23464 transitions. Word has length 11 [2021-10-07 14:57:05,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:05,053 INFO L470 AbstractCegarLoop]: Abstraction has 5199 states and 23464 transitions. [2021-10-07 14:57:05,053 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) [2021-10-07 14:57:05,053 INFO L276 IsEmpty]: Start isEmpty. Operand 5199 states and 23464 transitions. [2021-10-07 14:57:05,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 14:57:05,054 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:05,054 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:57:05,078 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 [2021-10-07 14:57:05,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:57:05,256 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-07 14:57:05,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:05,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1088304480, now seen corresponding path program 1 times [2021-10-07 14:57:05,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:05,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648715615] [2021-10-07 14:57:05,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:05,258 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:05,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:05,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:05,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:05,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648715615] [2021-10-07 14:57:05,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648715615] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:57:05,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905332538] [2021-10-07 14:57:05,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:05,693 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:57:05,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:57:05,694 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) [2021-10-07 14:57:05,721 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 [2021-10-07 14:57:05,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:05,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-07 14:57:05,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:57:06,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 14:57:06,044 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 463 treesize of output 455 [2021-10-07 14:57:06,172 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 [2021-10-07 14:57:06,330 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 14:57:06,331 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 [2021-10-07 14:57:06,495 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 14:57:06,496 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 23 treesize of output 22 [2021-10-07 14:57:06,597 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 14:57:06,598 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 23 treesize of output 22 [2021-10-07 14:57:06,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:06,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905332538] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:57:06,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:57:06,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-07 14:57:06,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131124350] [2021-10-07 14:57:06,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 14:57:06,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:06,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 14:57:06,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-10-07 14:57:06,671 INFO L87 Difference]: Start difference. First operand 5199 states and 23464 transitions. Second operand has 16 states, 15 states have (on average 1.6) internal successors, (24), 15 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) [2021-10-07 14:57:07,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:07,604 INFO L93 Difference]: Finished difference Result 5559 states and 24727 transitions. [2021-10-07 14:57:07,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 14:57:07,604 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.6) internal successors, (24), 15 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 12 [2021-10-07 14:57:07,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:07,626 INFO L225 Difference]: With dead ends: 5559 [2021-10-07 14:57:07,626 INFO L226 Difference]: Without dead ends: 5559 [2021-10-07 14:57:07,626 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 768.1ms TimeCoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2021-10-07 14:57:07,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5559 states. [2021-10-07 14:57:07,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5559 to 5373. [2021-10-07 14:57:07,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5373 states, 5349 states have (on average 4.525331837726678) internal successors, (24206), 5372 states have internal predecessors, (24206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:07,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5373 states to 5373 states and 24206 transitions. [2021-10-07 14:57:07,791 INFO L78 Accepts]: Start accepts. Automaton has 5373 states and 24206 transitions. Word has length 12 [2021-10-07 14:57:07,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:07,792 INFO L470 AbstractCegarLoop]: Abstraction has 5373 states and 24206 transitions. [2021-10-07 14:57:07,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.6) internal successors, (24), 15 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) [2021-10-07 14:57:07,792 INFO L276 IsEmpty]: Start isEmpty. Operand 5373 states and 24206 transitions. [2021-10-07 14:57:07,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 14:57:07,794 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:07,794 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:57:07,822 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 [2021-10-07 14:57:08,009 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,SelfDestructingSolverStorable20 [2021-10-07 14:57:08,010 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-07 14:57:08,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:08,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1088304481, now seen corresponding path program 1 times [2021-10-07 14:57:08,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:08,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398991803] [2021-10-07 14:57:08,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:08,012 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:08,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:08,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:08,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:08,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398991803] [2021-10-07 14:57:08,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398991803] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:57:08,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788451386] [2021-10-07 14:57:08,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:08,518 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:57:08,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:57:08,520 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) [2021-10-07 14:57:08,522 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 [2021-10-07 14:57:08,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:08,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-07 14:57:08,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:57:08,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 14:57:08,696 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 393 treesize of output 361 [2021-10-07 14:57:08,819 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 17 treesize of output 13 [2021-10-07 14:57:08,970 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 14:57:08,971 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 26 treesize of output 25 [2021-10-07 14:57:09,119 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 14:57:09,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-10-07 14:57:09,204 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 14:57:09,205 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 25 treesize of output 24 [2021-10-07 14:57:09,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:09,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788451386] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:57:09,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:57:09,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-07 14:57:09,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215471567] [2021-10-07 14:57:09,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 14:57:09,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:09,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 14:57:09,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-10-07 14:57:09,280 INFO L87 Difference]: Start difference. First operand 5373 states and 24206 transitions. Second operand has 16 states, 15 states have (on average 1.6) internal successors, (24), 15 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) [2021-10-07 14:57:10,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:10,428 INFO L93 Difference]: Finished difference Result 10595 states and 46118 transitions. [2021-10-07 14:57:10,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 14:57:10,428 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.6) internal successors, (24), 15 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 12 [2021-10-07 14:57:10,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:10,500 INFO L225 Difference]: With dead ends: 10595 [2021-10-07 14:57:10,500 INFO L226 Difference]: Without dead ends: 10595 [2021-10-07 14:57:10,501 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 704.9ms TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2021-10-07 14:57:10,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10595 states. [2021-10-07 14:57:10,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10595 to 6485. [2021-10-07 14:57:10,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6485 states, 6461 states have (on average 4.643553629469123) internal successors, (30002), 6484 states have internal predecessors, (30002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:10,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6485 states to 6485 states and 30002 transitions. [2021-10-07 14:57:10,894 INFO L78 Accepts]: Start accepts. Automaton has 6485 states and 30002 transitions. Word has length 12 [2021-10-07 14:57:10,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:10,895 INFO L470 AbstractCegarLoop]: Abstraction has 6485 states and 30002 transitions. [2021-10-07 14:57:10,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.6) internal successors, (24), 15 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) [2021-10-07 14:57:10,895 INFO L276 IsEmpty]: Start isEmpty. Operand 6485 states and 30002 transitions. [2021-10-07 14:57:10,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 14:57:10,897 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:10,897 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:57:10,931 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 [2021-10-07 14:57:11,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:57:11,113 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-07 14:57:11,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:11,115 INFO L82 PathProgramCache]: Analyzing trace with hash -322892966, now seen corresponding path program 2 times [2021-10-07 14:57:11,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:11,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097733377] [2021-10-07 14:57:11,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:11,116 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:11,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:11,186 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:11,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:11,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097733377] [2021-10-07 14:57:11,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097733377] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:57:11,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967941663] [2021-10-07 14:57:11,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:57:11,187 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:57:11,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:57:11,188 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) [2021-10-07 14:57:11,208 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 [2021-10-07 14:57:11,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 14:57:11,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:57:11,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 14:57:11,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:57:11,370 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-07 14:57:11,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967941663] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:11,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:57:11,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [7] total 8 [2021-10-07 14:57:11,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301357831] [2021-10-07 14:57:11,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:57:11,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:11,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:57:11,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-07 14:57:11,373 INFO L87 Difference]: Start difference. First operand 6485 states and 30002 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) [2021-10-07 14:57:11,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:11,439 INFO L93 Difference]: Finished difference Result 5869 states and 27238 transitions. [2021-10-07 14:57:11,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:57:11,439 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 13 [2021-10-07 14:57:11,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:11,471 INFO L225 Difference]: With dead ends: 5869 [2021-10-07 14:57:11,472 INFO L226 Difference]: Without dead ends: 5739 [2021-10-07 14:57:11,472 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 28.9ms TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-07 14:57:11,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5739 states. [2021-10-07 14:57:11,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5739 to 3969. [2021-10-07 14:57:11,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3969 states, 3957 states have (on average 4.421026029820571) internal successors, (17494), 3968 states have internal predecessors, (17494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:11,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3969 states to 3969 states and 17494 transitions. [2021-10-07 14:57:11,592 INFO L78 Accepts]: Start accepts. Automaton has 3969 states and 17494 transitions. Word has length 13 [2021-10-07 14:57:11,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:11,592 INFO L470 AbstractCegarLoop]: Abstraction has 3969 states and 17494 transitions. [2021-10-07 14:57:11,592 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) [2021-10-07 14:57:11,593 INFO L276 IsEmpty]: Start isEmpty. Operand 3969 states and 17494 transitions. [2021-10-07 14:57:11,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 14:57:11,594 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:11,595 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:57:11,622 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 [2021-10-07 14:57:11,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:57:11,804 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-07 14:57:11,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:11,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1532535373, now seen corresponding path program 1 times [2021-10-07 14:57:11,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:11,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659759930] [2021-10-07 14:57:11,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:11,806 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:12,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:12,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:12,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659759930] [2021-10-07 14:57:12,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659759930] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:57:12,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009746086] [2021-10-07 14:57:12,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:12,226 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:57:12,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:57:12,228 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) [2021-10-07 14:57:12,236 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 [2021-10-07 14:57:12,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:12,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 14:57:12,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:57:12,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:57:12,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009746086] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:12,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:57:12,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 9 [2021-10-07 14:57:12,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904340852] [2021-10-07 14:57:12,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:57:12,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:12,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:57:12,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-07 14:57:12,458 INFO L87 Difference]: Start difference. First operand 3969 states and 17494 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) [2021-10-07 14:57:12,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:12,528 INFO L93 Difference]: Finished difference Result 4841 states and 20648 transitions. [2021-10-07 14:57:12,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:57:12,529 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 [2021-10-07 14:57:12,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:12,548 INFO L225 Difference]: With dead ends: 4841 [2021-10-07 14:57:12,548 INFO L226 Difference]: Without dead ends: 4749 [2021-10-07 14:57:12,548 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 137.9ms TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-07 14:57:12,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4749 states. [2021-10-07 14:57:12,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4749 to 4271. [2021-10-07 14:57:12,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4271 states, 4259 states have (on average 4.375205447288096) internal successors, (18634), 4270 states have internal predecessors, (18634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:12,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4271 states to 4271 states and 18634 transitions. [2021-10-07 14:57:12,681 INFO L78 Accepts]: Start accepts. Automaton has 4271 states and 18634 transitions. Word has length 13 [2021-10-07 14:57:12,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:12,681 INFO L470 AbstractCegarLoop]: Abstraction has 4271 states and 18634 transitions. [2021-10-07 14:57:12,681 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) [2021-10-07 14:57:12,682 INFO L276 IsEmpty]: Start isEmpty. Operand 4271 states and 18634 transitions. [2021-10-07 14:57:12,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 14:57:12,685 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:12,685 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:57:12,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-10-07 14:57:12,900 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,SelfDestructingSolverStorable23 [2021-10-07 14:57:12,901 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-07 14:57:12,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:12,902 INFO L82 PathProgramCache]: Analyzing trace with hash -622291643, now seen corresponding path program 1 times [2021-10-07 14:57:12,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:12,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182784983] [2021-10-07 14:57:12,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:12,903 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:12,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:13,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:13,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:13,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182784983] [2021-10-07 14:57:13,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182784983] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:57:13,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239810083] [2021-10-07 14:57:13,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:13,379 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:57:13,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:57:13,381 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) [2021-10-07 14:57:13,382 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 [2021-10-07 14:57:13,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:13,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-07 14:57:13,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:57:13,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 14:57:13,590 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 203 treesize of output 201 [2021-10-07 14:57:13,726 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 [2021-10-07 14:57:13,904 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 14:57:13,904 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 1 case distinctions, treesize of input 24 treesize of output 23 [2021-10-07 14:57:14,086 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 14:57:14,087 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 23 treesize of output 22 [2021-10-07 14:57:14,185 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 14:57:14,186 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 23 treesize of output 22 [2021-10-07 14:57:14,298 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 14:57:14,299 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 23 treesize of output 22 [2021-10-07 14:57:14,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:14,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239810083] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:57:14,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:57:14,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2021-10-07 14:57:14,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305485691] [2021-10-07 14:57:14,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 14:57:14,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:14,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 14:57:14,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2021-10-07 14:57:14,344 INFO L87 Difference]: Start difference. First operand 4271 states and 18634 transitions. Second operand has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:15,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:15,111 INFO L93 Difference]: Finished difference Result 6402 states and 26230 transitions. [2021-10-07 14:57:15,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 14:57:15,112 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 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 [2021-10-07 14:57:15,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:15,150 INFO L225 Difference]: With dead ends: 6402 [2021-10-07 14:57:15,151 INFO L226 Difference]: Without dead ends: 6402 [2021-10-07 14:57:15,151 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 687.2ms TimeCoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2021-10-07 14:57:15,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6402 states. [2021-10-07 14:57:15,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6402 to 4897. [2021-10-07 14:57:15,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4897 states, 4885 states have (on average 4.384646878198567) internal successors, (21419), 4896 states have internal predecessors, (21419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:15,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4897 states to 4897 states and 21419 transitions. [2021-10-07 14:57:15,407 INFO L78 Accepts]: Start accepts. Automaton has 4897 states and 21419 transitions. Word has length 13 [2021-10-07 14:57:15,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:15,408 INFO L470 AbstractCegarLoop]: Abstraction has 4897 states and 21419 transitions. [2021-10-07 14:57:15,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:15,408 INFO L276 IsEmpty]: Start isEmpty. Operand 4897 states and 21419 transitions. [2021-10-07 14:57:15,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 14:57:15,411 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:15,411 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:57:15,454 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 [2021-10-07 14:57:15,624 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,SelfDestructingSolverStorable24 [2021-10-07 14:57:15,625 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-07 14:57:15,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:15,626 INFO L82 PathProgramCache]: Analyzing trace with hash -622291642, now seen corresponding path program 1 times [2021-10-07 14:57:15,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:15,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652829639] [2021-10-07 14:57:15,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:15,627 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:16,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:16,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:16,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652829639] [2021-10-07 14:57:16,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652829639] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:57:16,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700320824] [2021-10-07 14:57:16,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:16,256 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:57:16,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:57:16,263 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) [2021-10-07 14:57:16,265 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 [2021-10-07 14:57:16,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:16,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-07 14:57:16,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:57:16,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 14:57:16,499 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 284 treesize of output 268 [2021-10-07 14:57:16,630 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 17 treesize of output 13 [2021-10-07 14:57:16,826 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 14:57:16,826 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 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-07 14:57:17,028 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 14:57:17,028 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 25 treesize of output 24 [2021-10-07 14:57:17,143 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 14:57:17,144 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 25 treesize of output 24 [2021-10-07 14:57:17,277 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 14:57:17,278 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 25 treesize of output 24 [2021-10-07 14:57:17,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:17,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700320824] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:57:17,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:57:17,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2021-10-07 14:57:17,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922283900] [2021-10-07 14:57:17,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 14:57:17,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:17,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 14:57:17,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-10-07 14:57:17,324 INFO L87 Difference]: Start difference. First operand 4897 states and 21419 transitions. Second operand has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:19,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:19,260 INFO L93 Difference]: Finished difference Result 7053 states and 28754 transitions. [2021-10-07 14:57:19,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-07 14:57:19,261 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 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 [2021-10-07 14:57:19,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:19,289 INFO L225 Difference]: With dead ends: 7053 [2021-10-07 14:57:19,290 INFO L226 Difference]: Without dead ends: 7053 [2021-10-07 14:57:19,290 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1436.9ms TimeCoverageRelationStatistics Valid=114, Invalid=588, Unknown=0, NotChecked=0, Total=702 [2021-10-07 14:57:19,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7053 states. [2021-10-07 14:57:19,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7053 to 5077. [2021-10-07 14:57:19,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5077 states, 5065 states have (on average 4.323790720631787) internal successors, (21900), 5076 states have internal predecessors, (21900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:19,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5077 states to 5077 states and 21900 transitions. [2021-10-07 14:57:19,439 INFO L78 Accepts]: Start accepts. Automaton has 5077 states and 21900 transitions. Word has length 13 [2021-10-07 14:57:19,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:19,439 INFO L470 AbstractCegarLoop]: Abstraction has 5077 states and 21900 transitions. [2021-10-07 14:57:19,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:19,440 INFO L276 IsEmpty]: Start isEmpty. Operand 5077 states and 21900 transitions. [2021-10-07 14:57:19,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 14:57:19,442 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:19,442 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:57:19,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-10-07 14:57:19,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:57:19,658 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-07 14:57:19,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:19,659 INFO L82 PathProgramCache]: Analyzing trace with hash 573986891, now seen corresponding path program 2 times [2021-10-07 14:57:19,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:19,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554477226] [2021-10-07 14:57:19,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:19,660 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:20,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:20,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:20,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554477226] [2021-10-07 14:57:20,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554477226] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:57:20,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566275675] [2021-10-07 14:57:20,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:57:20,218 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:57:20,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:57:20,219 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) [2021-10-07 14:57:20,246 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 [2021-10-07 14:57:20,448 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 14:57:20,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:57:20,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-07 14:57:20,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:57:20,462 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 1092 treesize of output 1076 [2021-10-07 14:57:20,745 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 14:57:20,746 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 [2021-10-07 14:57:20,798 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 14:57:20,799 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 [2021-10-07 14:57:20,835 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 14:57:20,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566275675] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:20,836 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:57:20,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 14 [2021-10-07 14:57:20,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806238908] [2021-10-07 14:57:20,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 14:57:20,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:20,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 14:57:20,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-10-07 14:57:20,838 INFO L87 Difference]: Start difference. First operand 5077 states and 21900 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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) [2021-10-07 14:57:21,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:21,155 INFO L93 Difference]: Finished difference Result 9416 states and 40023 transitions. [2021-10-07 14:57:21,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 14:57:21,156 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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 13 [2021-10-07 14:57:21,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:21,195 INFO L225 Difference]: With dead ends: 9416 [2021-10-07 14:57:21,195 INFO L226 Difference]: Without dead ends: 9416 [2021-10-07 14:57:21,195 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 308.1ms TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-10-07 14:57:21,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9416 states. [2021-10-07 14:57:21,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9416 to 5857. [2021-10-07 14:57:21,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5857 states, 5845 states have (on average 4.438323353293413) internal successors, (25942), 5856 states have internal predecessors, (25942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:21,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5857 states to 5857 states and 25942 transitions. [2021-10-07 14:57:21,394 INFO L78 Accepts]: Start accepts. Automaton has 5857 states and 25942 transitions. Word has length 13 [2021-10-07 14:57:21,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:21,394 INFO L470 AbstractCegarLoop]: Abstraction has 5857 states and 25942 transitions. [2021-10-07 14:57:21,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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) [2021-10-07 14:57:21,394 INFO L276 IsEmpty]: Start isEmpty. Operand 5857 states and 25942 transitions. [2021-10-07 14:57:21,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 14:57:21,396 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:21,396 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:57:21,425 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 [2021-10-07 14:57:21,603 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,SelfDestructingSolverStorable26 [2021-10-07 14:57:21,604 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-07 14:57:21,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:21,605 INFO L82 PathProgramCache]: Analyzing trace with hash 573986892, now seen corresponding path program 2 times [2021-10-07 14:57:21,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:21,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436995935] [2021-10-07 14:57:21,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:21,606 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:21,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:22,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:22,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:22,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436995935] [2021-10-07 14:57:22,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436995935] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:57:22,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667425944] [2021-10-07 14:57:22,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:57:22,288 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:57:22,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:57:22,289 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) [2021-10-07 14:57:22,317 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 [2021-10-07 14:57:22,529 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 14:57:22,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:57:22,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 14:57:22,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:57:22,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 14:57:22,556 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 165 treesize of output 161 [2021-10-07 14:57:22,808 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 14:57:22,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 [2021-10-07 14:57:22,868 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 14:57:22,869 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 [2021-10-07 14:57:22,911 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 14:57:22,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667425944] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:22,912 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:57:22,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 14 [2021-10-07 14:57:22,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643248380] [2021-10-07 14:57:22,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 14:57:22,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:22,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 14:57:22,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-10-07 14:57:22,914 INFO L87 Difference]: Start difference. First operand 5857 states and 25942 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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) [2021-10-07 14:57:23,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:23,189 INFO L93 Difference]: Finished difference Result 10081 states and 43034 transitions. [2021-10-07 14:57:23,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 14:57:23,190 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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 13 [2021-10-07 14:57:23,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:23,252 INFO L225 Difference]: With dead ends: 10081 [2021-10-07 14:57:23,252 INFO L226 Difference]: Without dead ends: 10081 [2021-10-07 14:57:23,252 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 403.9ms TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-10-07 14:57:23,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10081 states. [2021-10-07 14:57:23,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10081 to 5857. [2021-10-07 14:57:23,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5857 states, 5845 states have (on average 4.380153977758768) internal successors, (25602), 5856 states have internal predecessors, (25602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:23,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5857 states to 5857 states and 25602 transitions. [2021-10-07 14:57:23,479 INFO L78 Accepts]: Start accepts. Automaton has 5857 states and 25602 transitions. Word has length 13 [2021-10-07 14:57:23,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:23,479 INFO L470 AbstractCegarLoop]: Abstraction has 5857 states and 25602 transitions. [2021-10-07 14:57:23,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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) [2021-10-07 14:57:23,479 INFO L276 IsEmpty]: Start isEmpty. Operand 5857 states and 25602 transitions. [2021-10-07 14:57:23,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 14:57:23,481 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:23,481 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:57:23,507 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-10-07 14:57:23,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-07 14:57:23,689 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-07 14:57:23,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:23,690 INFO L82 PathProgramCache]: Analyzing trace with hash -783454557, now seen corresponding path program 1 times [2021-10-07 14:57:23,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:23,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645512359] [2021-10-07 14:57:23,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:23,691 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:23,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:24,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:24,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:24,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645512359] [2021-10-07 14:57:24,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645512359] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:57:24,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134414108] [2021-10-07 14:57:24,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:24,064 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:57:24,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:57:24,067 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) [2021-10-07 14:57:24,090 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 [2021-10-07 14:57:24,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:24,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 14:57:24,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:57:24,577 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 14:57:24,578 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 [2021-10-07 14:57:24,642 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 14:57:24,642 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 [2021-10-07 14:57:24,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:57:24,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134414108] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:24,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:57:24,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 14 [2021-10-07 14:57:24,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212128413] [2021-10-07 14:57:24,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 14:57:24,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:24,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 14:57:24,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-10-07 14:57:24,689 INFO L87 Difference]: Start difference. First operand 5857 states and 25602 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) [2021-10-07 14:57:24,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:24,991 INFO L93 Difference]: Finished difference Result 9469 states and 40791 transitions. [2021-10-07 14:57:24,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 14:57:24,992 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 [2021-10-07 14:57:24,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:25,053 INFO L225 Difference]: With dead ends: 9469 [2021-10-07 14:57:25,053 INFO L226 Difference]: Without dead ends: 9469 [2021-10-07 14:57:25,053 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 372.0ms TimeCoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2021-10-07 14:57:25,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9469 states. [2021-10-07 14:57:25,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9469 to 6591. [2021-10-07 14:57:25,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6591 states, 6579 states have (on average 4.4187566499468005) internal successors, (29071), 6590 states have internal predecessors, (29071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:25,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6591 states to 6591 states and 29071 transitions. [2021-10-07 14:57:25,353 INFO L78 Accepts]: Start accepts. Automaton has 6591 states and 29071 transitions. Word has length 14 [2021-10-07 14:57:25,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:25,353 INFO L470 AbstractCegarLoop]: Abstraction has 6591 states and 29071 transitions. [2021-10-07 14:57:25,353 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) [2021-10-07 14:57:25,353 INFO L276 IsEmpty]: Start isEmpty. Operand 6591 states and 29071 transitions. [2021-10-07 14:57:25,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 14:57:25,356 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:25,356 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:57:25,383 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 [2021-10-07 14:57:25,564 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,SelfDestructingSolverStorable28 [2021-10-07 14:57:25,565 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-07 14:57:25,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:25,566 INFO L82 PathProgramCache]: Analyzing trace with hash -783454556, now seen corresponding path program 1 times [2021-10-07 14:57:25,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:25,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217652629] [2021-10-07 14:57:25,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:25,567 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:26,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:26,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:26,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217652629] [2021-10-07 14:57:26,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217652629] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:57:26,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834218063] [2021-10-07 14:57:26,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:26,120 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:57:26,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:57:26,121 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) [2021-10-07 14:57:26,145 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 [2021-10-07 14:57:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:26,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-07 14:57:26,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:57:26,857 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 14:57:26,858 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 [2021-10-07 14:57:26,971 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 14:57:26,972 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 30 treesize of output 29 [2021-10-07 14:57:27,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:27,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834218063] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:57:27,063 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:57:27,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 15 [2021-10-07 14:57:27,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006843213] [2021-10-07 14:57:27,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-07 14:57:27,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:27,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-07 14:57:27,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-10-07 14:57:27,065 INFO L87 Difference]: Start difference. First operand 6591 states and 29071 transitions. Second operand has 17 states, 16 states have (on average 1.75) internal successors, (28), 16 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) [2021-10-07 14:57:28,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:28,576 INFO L93 Difference]: Finished difference Result 8859 states and 36608 transitions. [2021-10-07 14:57:28,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 14:57:28,577 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 16 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 [2021-10-07 14:57:28,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:28,615 INFO L225 Difference]: With dead ends: 8859 [2021-10-07 14:57:28,615 INFO L226 Difference]: Without dead ends: 8859 [2021-10-07 14:57:28,617 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1315.5ms TimeCoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2021-10-07 14:57:28,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8859 states. [2021-10-07 14:57:28,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8859 to 7231. [2021-10-07 14:57:28,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7231 states, 7219 states have (on average 4.3801080482061225) internal successors, (31620), 7230 states have internal predecessors, (31620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:28,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7231 states to 7231 states and 31620 transitions. [2021-10-07 14:57:28,834 INFO L78 Accepts]: Start accepts. Automaton has 7231 states and 31620 transitions. Word has length 14 [2021-10-07 14:57:28,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:28,835 INFO L470 AbstractCegarLoop]: Abstraction has 7231 states and 31620 transitions. [2021-10-07 14:57:28,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 16 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) [2021-10-07 14:57:28,835 INFO L276 IsEmpty]: Start isEmpty. Operand 7231 states and 31620 transitions. [2021-10-07 14:57:28,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 14:57:28,839 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:28,839 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:57:28,863 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 [2021-10-07 14:57:29,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:57:29,040 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-07 14:57:29,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:29,041 INFO L82 PathProgramCache]: Analyzing trace with hash 613732282, now seen corresponding path program 2 times [2021-10-07 14:57:29,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:29,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403588762] [2021-10-07 14:57:29,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:29,042 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:29,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:29,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:29,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:29,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403588762] [2021-10-07 14:57:29,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403588762] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:57:29,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736990639] [2021-10-07 14:57:29,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:57:29,753 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:57:29,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:57:29,759 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) [2021-10-07 14:57:29,760 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 [2021-10-07 14:57:30,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 14:57:30,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:57:30,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 14:57:30,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:57:30,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 14:57:30,089 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 [2021-10-07 14:57:30,405 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 14:57:30,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2021-10-07 14:57:30,482 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 14:57:30,482 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 [2021-10-07 14:57:30,559 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 14:57:30,560 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 [2021-10-07 14:57:30,595 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 14:57:30,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736990639] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:30,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:57:30,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 16 [2021-10-07 14:57:30,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796864123] [2021-10-07 14:57:30,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-07 14:57:30,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:30,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-07 14:57:30,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-10-07 14:57:30,598 INFO L87 Difference]: Start difference. First operand 7231 states and 31620 transitions. Second operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 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) [2021-10-07 14:57:30,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:30,855 INFO L93 Difference]: Finished difference Result 7731 states and 33004 transitions. [2021-10-07 14:57:30,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 14:57:30,856 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 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 14 [2021-10-07 14:57:30,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:30,886 INFO L225 Difference]: With dead ends: 7731 [2021-10-07 14:57:30,887 INFO L226 Difference]: Without dead ends: 7731 [2021-10-07 14:57:30,887 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 476.5ms TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2021-10-07 14:57:30,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7731 states. [2021-10-07 14:57:31,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7731 to 7307. [2021-10-07 14:57:31,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7307 states, 7295 states have (on average 4.361754626456477) internal successors, (31819), 7306 states have internal predecessors, (31819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:31,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7307 states to 7307 states and 31819 transitions. [2021-10-07 14:57:31,137 INFO L78 Accepts]: Start accepts. Automaton has 7307 states and 31819 transitions. Word has length 14 [2021-10-07 14:57:31,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:31,138 INFO L470 AbstractCegarLoop]: Abstraction has 7307 states and 31819 transitions. [2021-10-07 14:57:31,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 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) [2021-10-07 14:57:31,138 INFO L276 IsEmpty]: Start isEmpty. Operand 7307 states and 31819 transitions. [2021-10-07 14:57:31,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 14:57:31,142 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:31,142 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:57:31,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-07 14:57:31,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:57:31,359 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-07 14:57:31,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:31,360 INFO L82 PathProgramCache]: Analyzing trace with hash 613732283, now seen corresponding path program 2 times [2021-10-07 14:57:31,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:31,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686237456] [2021-10-07 14:57:31,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:31,361 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:32,350 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:32,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:32,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686237456] [2021-10-07 14:57:32,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686237456] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:57:32,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042701652] [2021-10-07 14:57:32,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:57:32,352 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:57:32,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:57:32,353 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) [2021-10-07 14:57:32,354 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 [2021-10-07 14:57:32,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 14:57:32,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:57:32,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 14:57:32,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:57:32,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 14:57:32,740 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 246 treesize of output 230 [2021-10-07 14:57:33,076 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 14:57:33,077 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 28 treesize of output 27 [2021-10-07 14:57:33,234 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 14:57:33,235 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 [2021-10-07 14:57:33,326 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 14:57:33,326 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 [2021-10-07 14:57:33,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 14:57:33,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042701652] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:33,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:57:33,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 17 [2021-10-07 14:57:33,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686727352] [2021-10-07 14:57:33,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 14:57:33,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:33,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 14:57:33,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-10-07 14:57:33,366 INFO L87 Difference]: Start difference. First operand 7307 states and 31819 transitions. Second operand has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 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) [2021-10-07 14:57:33,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:33,722 INFO L93 Difference]: Finished difference Result 9542 states and 40329 transitions. [2021-10-07 14:57:33,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 14:57:33,723 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 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 14 [2021-10-07 14:57:33,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:33,775 INFO L225 Difference]: With dead ends: 9542 [2021-10-07 14:57:33,776 INFO L226 Difference]: Without dead ends: 9542 [2021-10-07 14:57:33,776 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 692.0ms TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2021-10-07 14:57:33,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9542 states. [2021-10-07 14:57:33,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9542 to 6591. [2021-10-07 14:57:33,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6591 states, 6579 states have (on average 4.309469524243806) internal successors, (28352), 6590 states have internal predecessors, (28352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:34,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6591 states to 6591 states and 28352 transitions. [2021-10-07 14:57:34,021 INFO L78 Accepts]: Start accepts. Automaton has 6591 states and 28352 transitions. Word has length 14 [2021-10-07 14:57:34,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:34,022 INFO L470 AbstractCegarLoop]: Abstraction has 6591 states and 28352 transitions. [2021-10-07 14:57:34,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 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) [2021-10-07 14:57:34,022 INFO L276 IsEmpty]: Start isEmpty. Operand 6591 states and 28352 transitions. [2021-10-07 14:57:34,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 14:57:34,025 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:34,026 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:57:34,053 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 [2021-10-07 14:57:34,234 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,SelfDestructingSolverStorable31 [2021-10-07 14:57:34,235 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-07 14:57:34,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:34,236 INFO L82 PathProgramCache]: Analyzing trace with hash 959427020, now seen corresponding path program 2 times [2021-10-07 14:57:34,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:34,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338962037] [2021-10-07 14:57:34,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:34,237 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:35,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:35,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:35,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338962037] [2021-10-07 14:57:35,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338962037] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:57:35,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950978613] [2021-10-07 14:57:35,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:57:35,295 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:57:35,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:57:35,296 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) [2021-10-07 14:57:35,297 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 [2021-10-07 14:57:35,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 14:57:35,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:57:35,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 14:57:35,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:57:36,050 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 14:57:36,051 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 [2021-10-07 14:57:36,133 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 14:57:36,133 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 [2021-10-07 14:57:36,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 14:57:36,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950978613] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:36,188 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:57:36,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 15 [2021-10-07 14:57:36,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77933591] [2021-10-07 14:57:36,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 14:57:36,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:36,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 14:57:36,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2021-10-07 14:57:36,191 INFO L87 Difference]: Start difference. First operand 6591 states and 28352 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) [2021-10-07 14:57:36,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:36,484 INFO L93 Difference]: Finished difference Result 6571 states and 27988 transitions. [2021-10-07 14:57:36,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 14:57:36,485 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 [2021-10-07 14:57:36,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:36,516 INFO L225 Difference]: With dead ends: 6571 [2021-10-07 14:57:36,516 INFO L226 Difference]: Without dead ends: 6571 [2021-10-07 14:57:36,516 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 609.4ms TimeCoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2021-10-07 14:57:36,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6571 states. [2021-10-07 14:57:36,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6571 to 6463. [2021-10-07 14:57:36,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6463 states, 6451 states have (on average 4.286157184932569) internal successors, (27650), 6462 states have internal predecessors, (27650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:36,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6463 states to 6463 states and 27650 transitions. [2021-10-07 14:57:36,727 INFO L78 Accepts]: Start accepts. Automaton has 6463 states and 27650 transitions. Word has length 15 [2021-10-07 14:57:36,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:36,727 INFO L470 AbstractCegarLoop]: Abstraction has 6463 states and 27650 transitions. [2021-10-07 14:57:36,728 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) [2021-10-07 14:57:36,728 INFO L276 IsEmpty]: Start isEmpty. Operand 6463 states and 27650 transitions. [2021-10-07 14:57:36,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 14:57:36,732 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:36,732 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:57:36,765 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 [2021-10-07 14:57:36,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:57:36,948 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-07 14:57:36,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:36,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1021786133, now seen corresponding path program 1 times [2021-10-07 14:57:36,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:36,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726787053] [2021-10-07 14:57:36,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:36,950 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:36,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:37,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:57:37,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:37,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726787053] [2021-10-07 14:57:37,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726787053] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:37,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:37,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-07 14:57:37,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522669517] [2021-10-07 14:57:37,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:57:37,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:37,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:57:37,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:57:37,041 INFO L87 Difference]: Start difference. First operand 6463 states and 27650 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 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) [2021-10-07 14:57:37,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:37,211 INFO L93 Difference]: Finished difference Result 10365 states and 42608 transitions. [2021-10-07 14:57:37,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:57:37,212 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 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 [2021-10-07 14:57:37,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:37,278 INFO L225 Difference]: With dead ends: 10365 [2021-10-07 14:57:37,278 INFO L226 Difference]: Without dead ends: 9450 [2021-10-07 14:57:37,279 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:57:37,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9450 states. [2021-10-07 14:57:37,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9450 to 6642. [2021-10-07 14:57:37,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6642 states, 6630 states have (on average 4.432277526395174) internal successors, (29386), 6641 states have internal predecessors, (29386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:37,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6642 states to 6642 states and 29386 transitions. [2021-10-07 14:57:37,573 INFO L78 Accepts]: Start accepts. Automaton has 6642 states and 29386 transitions. Word has length 15 [2021-10-07 14:57:37,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:37,574 INFO L470 AbstractCegarLoop]: Abstraction has 6642 states and 29386 transitions. [2021-10-07 14:57:37,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 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) [2021-10-07 14:57:37,574 INFO L276 IsEmpty]: Start isEmpty. Operand 6642 states and 29386 transitions. [2021-10-07 14:57:37,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 14:57:37,578 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:37,578 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:57:37,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-10-07 14:57:37,578 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-07 14:57:37,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:37,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1280523511, now seen corresponding path program 1 times [2021-10-07 14:57:37,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:37,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798391525] [2021-10-07 14:57:37,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:37,580 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:37,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:37,643 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:57:37,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:37,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798391525] [2021-10-07 14:57:37,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798391525] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:37,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:37,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-07 14:57:37,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129023295] [2021-10-07 14:57:37,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:57:37,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:37,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:57:37,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:57:37,645 INFO L87 Difference]: Start difference. First operand 6642 states and 29386 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 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) [2021-10-07 14:57:37,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:37,825 INFO L93 Difference]: Finished difference Result 10712 states and 46348 transitions. [2021-10-07 14:57:37,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:57:37,826 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 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 [2021-10-07 14:57:37,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:37,903 INFO L225 Difference]: With dead ends: 10712 [2021-10-07 14:57:37,904 INFO L226 Difference]: Without dead ends: 9935 [2021-10-07 14:57:37,904 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:57:37,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9935 states. [2021-10-07 14:57:38,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9935 to 7471. [2021-10-07 14:57:38,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7471 states, 7459 states have (on average 4.519372570049605) internal successors, (33710), 7470 states have internal predecessors, (33710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:38,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7471 states to 7471 states and 33710 transitions. [2021-10-07 14:57:38,273 INFO L78 Accepts]: Start accepts. Automaton has 7471 states and 33710 transitions. Word has length 16 [2021-10-07 14:57:38,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:38,274 INFO L470 AbstractCegarLoop]: Abstraction has 7471 states and 33710 transitions. [2021-10-07 14:57:38,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 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) [2021-10-07 14:57:38,274 INFO L276 IsEmpty]: Start isEmpty. Operand 7471 states and 33710 transitions. [2021-10-07 14:57:38,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 14:57:38,282 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:38,282 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:57:38,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-10-07 14:57:38,283 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2021-10-07 14:57:38,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:38,283 INFO L82 PathProgramCache]: Analyzing trace with hash 643193066, now seen corresponding path program 1 times [2021-10-07 14:57:38,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:38,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144691430] [2021-10-07 14:57:38,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:38,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:38,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-07 14:57:38,324 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-07 14:57:38,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-07 14:57:38,390 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-07 14:57:38,390 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-07 14:57:38,391 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:38,393 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:38,394 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:38,394 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:38,394 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:38,394 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:38,395 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:38,395 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:38,395 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:38,395 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:38,395 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:38,395 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:38,396 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:38,396 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:38,396 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:38,396 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:38,396 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:38,396 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:38,397 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:38,397 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 14:57:38,397 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 14:57:38,397 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-07 14:57:38,397 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-07 14:57:38,397 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:38,398 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:38,398 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:38,398 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:38,398 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:38,398 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:38,398 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:38,399 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:38,399 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:38,399 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:38,399 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:38,399 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:38,399 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:38,400 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:38,400 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:38,400 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:38,400 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:38,400 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:38,400 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:38,401 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:38,401 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:38,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-10-07 14:57:38,409 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 14:57:38,410 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 14:57:38,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 02:57:38 BasicIcfg [2021-10-07 14:57:38,476 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 14:57:38,477 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-07 14:57:38,477 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-07 14:57:38,477 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-07 14:57:38,478 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:56:32" (3/4) ... [2021-10-07 14:57:38,481 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-07 14:57:38,577 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/weaver/popl20-bad-buffer-mult-alt.wvr.c-witness.graphml [2021-10-07 14:57:38,577 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-07 14:57:38,578 INFO L168 Benchmark]: Toolchain (without parser) took 68722.62 ms. Allocated memory was 161.5 MB in the beginning and 5.9 GB in the end (delta: 5.8 GB). Free memory was 136.1 MB in the beginning and 2.6 GB in the end (delta: -2.5 GB). Peak memory consumption was 3.3 GB. Max. memory is 8.0 GB. [2021-10-07 14:57:38,579 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 161.5 MB. Free memory is still 136.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 14:57:38,579 INFO L168 Benchmark]: CACSL2BoogieTranslator took 440.26 ms. Allocated memory is still 161.5 MB. Free memory was 135.7 MB in the beginning and 124.4 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-07 14:57:38,579 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.94 ms. Allocated memory is still 161.5 MB. Free memory was 124.4 MB in the beginning and 121.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 14:57:38,580 INFO L168 Benchmark]: Boogie Preprocessor took 93.57 ms. Allocated memory is still 161.5 MB. Free memory was 121.9 MB in the beginning and 119.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 14:57:38,581 INFO L168 Benchmark]: RCFGBuilder took 1608.14 ms. Allocated memory is still 161.5 MB. Free memory was 119.9 MB in the beginning and 110.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 13.5 MB. Max. memory is 8.0 GB. [2021-10-07 14:57:38,581 INFO L168 Benchmark]: TraceAbstraction took 66390.04 ms. Allocated memory was 161.5 MB in the beginning and 5.9 GB in the end (delta: 5.8 GB). Free memory was 109.7 MB in the beginning and 2.7 GB in the end (delta: -2.5 GB). Peak memory consumption was 3.2 GB. Max. memory is 8.0 GB. [2021-10-07 14:57:38,582 INFO L168 Benchmark]: Witness Printer took 99.99 ms. Allocated memory is still 5.9 GB. Free memory was 2.7 GB in the beginning and 2.6 GB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2021-10-07 14:57:38,593 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 161.5 MB. Free memory is still 136.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 440.26 ms. Allocated memory is still 161.5 MB. Free memory was 135.7 MB in the beginning and 124.4 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 70.94 ms. Allocated memory is still 161.5 MB. Free memory was 124.4 MB in the beginning and 121.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 93.57 ms. Allocated memory is still 161.5 MB. Free memory was 121.9 MB in the beginning and 119.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1608.14 ms. Allocated memory is still 161.5 MB. Free memory was 119.9 MB in the beginning and 110.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 13.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 66390.04 ms. Allocated memory was 161.5 MB in the beginning and 5.9 GB in the end (delta: 5.8 GB). Free memory was 109.7 MB in the beginning and 2.7 GB in the end (delta: -2.5 GB). Peak memory consumption was 3.2 GB. Max. memory is 8.0 GB. * Witness Printer took 99.99 ms. Allocated memory is still 5.9 GB. Free memory was 2.7 GB in the beginning and 2.6 GB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12778.8ms, 239 PlacesBefore, 66 PlacesAfterwards, 244 TransitionsBefore, 59 TransitionsAfterwards, 3772 CoEnabledTransitionPairs, 8 FixpointIterations, 151 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 24 TrivialYvCompositions, 8 ConcurrentYvCompositions, 12 ChoiceCompositions, 240 TotalNumberOfCompositions, 11566 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6277, positive: 6031, positive conditional: 0, positive unconditional: 6031, negative: 246, negative conditional: 0, negative unconditional: 246, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2283, positive: 2242, positive conditional: 0, positive unconditional: 2242, 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: 2283, positive: 2224, positive conditional: 0, positive unconditional: 2224, negative: 59, negative conditional: 0, negative unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 59, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 41, negative conditional: 0, negative unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 190, positive: 42, positive conditional: 0, positive unconditional: 42, negative: 147, negative conditional: 0, negative unconditional: 147, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 6277, positive: 3789, positive conditional: 0, positive unconditional: 3789, negative: 205, negative conditional: 0, negative unconditional: 205, unknown: 2283, unknown conditional: 0, unknown unconditional: 2283] , Statistics on independence cache: Total cache size (in pairs): 339, Positive cache size: 322, Positive conditional cache size: 0, Positive unconditional cache size: 322, 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 - CounterExampleResult [Line: 74]: integer overflow possible integer overflow possible We found a FailurePath: [L40] 0 int* q1; [L41] 0 int* q2; [L42] 0 int i, j, total, C, N, M, q1_front, q1_back, q2_front, q2_back, n1, n2; [L95] 0 pthread_t t1, t2, t3, t4; [L97] 0 C = __VERIFIER_nondet_int() [L98] 0 M = __VERIFIER_nondet_int() [L99] 0 N = __VERIFIER_nondet_int() [L101] 0 q1_front = __VERIFIER_nondet_int() [L102] 0 q1_back = __VERIFIER_nondet_int() [L103] 0 q2_front = __VERIFIER_nondet_int() [L104] 0 q2_back = __VERIFIER_nondet_int() [L106] 0 n1 = __VERIFIER_nondet_int() [L107] 0 n2 = __VERIFIER_nondet_int() [L37] COND FALSE 0 !(!cond) [L37] COND FALSE 0 !(!cond) [L133] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L134] 0 int i = 0; VAL [C=1073741824, i=0, j=0, M=0, N=2, n1=2, n2=0, q1={0:0}, q1_back=0, q1_front=0, q2={0:0}, q2_back=0, q2_front=0, total=0] [L134] COND TRUE 0 i < size [L135] 0 arr[i] = __VERIFIER_nondet_int() [L134] 0 i++ VAL [C=1073741824, i=0, j=0, M=0, N=2, n1=2, n2=0, q1={0:0}, q1_back=0, q1_front=0, q2={0:0}, q2_back=0, q2_front=0, total=0] [L134] COND TRUE 0 i < size [L135] 0 arr[i] = __VERIFIER_nondet_int() [L134] 0 i++ VAL [C=1073741824, i=0, j=0, M=0, N=2, n1=2, n2=0, q1={0:0}, q1_back=0, q1_front=0, q2={0:0}, q2_back=0, q2_front=0, total=0] [L134] COND FALSE 0 !(i < size) [L137] 0 return arr; [L108] 0 q1 = create_fresh_int_array(n1) [L37] COND FALSE 0 !(!cond) [L37] COND FALSE 0 !(!cond) [L133] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L134] 0 int i = 0; VAL [C=1073741824, i=0, j=0, M=0, N=2, n1=2, n2=0, q1={3:0}, q1_back=0, q1_front=0, q2={0:0}, q2_back=0, q2_front=0, total=0] [L134] COND FALSE 0 !(i < size) [L137] 0 return arr; [L109] 0 q2 = create_fresh_int_array(n2) [L37] COND FALSE 0 !(!cond) [L114] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [C=1073741824, i=0, j=0, M=0, N=2, n1=2, n2=0, q1={3:0}, q1_back=0, q1_front=0, q2={-5:0}, q2_back=0, q2_front=0, total=0] [L47] COND TRUE 1 i < N [L49] 1 q1_back >= 0 && q1_back < n1 && q1[q1_back] == C [L49] EXPR 1 q1[q1_back] [L49] 1 q1_back >= 0 && q1_back < n1 && q1[q1_back] == C [L37] COND FALSE 1 !(!cond) [L50] 1 q1_back++ [L52] 1 i++ VAL [C=1073741824, i=0, j=0, M=0, N=2, n1=2, n2=0, q1={3:0}, q1_back=1, q1_front=0, q2={-5:0}, q2_back=0, q2_front=0, total=0] [L52] 1 i++ VAL [C=1073741824, i=1, j=0, M=0, N=2, n1=2, n2=0, q1={3:0}, q1_back=1, q1_front=0, q2={-5:0}, q2_back=0, q2_front=0, total=0] [L47] COND TRUE 1 i < N [L49] 1 q1_back >= 0 && q1_back < n1 && q1[q1_back] == C [L49] EXPR 1 q1[q1_back] [L49] 1 q1_back >= 0 && q1_back < n1 && q1[q1_back] == C [L37] COND FALSE 1 !(!cond) [L50] 1 q1_back++ [L52] 1 i++ VAL [C=1073741824, i=1, j=0, M=0, N=2, n1=2, n2=0, q1={3:0}, q1_back=2, q1_front=0, q2={-5:0}, q2_back=0, q2_front=0, total=0] [L115] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [C=1073741824, i=1, j=0, M=0, N=2, n1=2, n2=0, q1={3:0}, q1_back=2, q1_front=0, q2={-5:0}, q2_back=0, q2_front=0, total=0] [L116] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [C=1073741824, i=1, j=0, M=0, N=2, n1=2, n2=0, q1={3:0}, q1_back=2, q1_front=0, q2={-5:0}, q2_back=0, q2_front=0, total=0] [L71] COND TRUE 3 i < N || q1_front < q1_back VAL [C=1073741824, i=1, j=0, M=0, N=2, n1=2, n2=0, q1={3:0}, q1_back=2, q1_front=0, q2={-5:0}, q2_back=0, q2_front=0, total=0] [L37] COND FALSE 3 !(!cond) [L74] EXPR 3 q1[q1_front] [L74] EXPR 3 total + q1[q1_front] [L74] 3 total = total + q1[q1_front] [L75] 3 q1_front++ VAL [C=1073741824, i=1, j=0, M=0, N=2, n1=2, n2=0, q1={3:0}, q1_back=2, q1_front=1, q2={-5:0}, q2_back=0, q2_front=0, total=1073741824] [L71] COND TRUE 3 i < N || q1_front < q1_back VAL [C=1073741824, i=1, j=0, M=0, N=2, n1=2, n2=0, q1={3:0}, q1_back=2, q1_front=1, q2={-5:0}, q2_back=0, q2_front=0, total=1073741824] [L37] COND FALSE 3 !(!cond) [L74] EXPR 3 q1[q1_front] [L74] 3 total + q1[q1_front] VAL [C=1073741824, i=1, j=0, M=0, N=2, n1=2, n2=0, q1={3:0}, q1_back=2, q1_front=1, q2={-5:0}, q2_back=0, q2_front=0, total=1073741824] - UnprovableResult [Line: 50]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 50]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 52]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 52]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 61]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 61]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 64]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 64]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 74]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 75]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 75]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 134]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 134]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 134]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 134]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 114]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 117]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 115]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 116]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 86]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 86]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 87]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 87]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 279 locations, 44 error locations. Started 1 CEGAR loops. OverallTime: 66062.9ms, OverallIterations: 36, TraceHistogramMax: 3, EmptinessCheckTime: 116.5ms, AutomataDifference: 15187.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13218.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1399 SDtfs, 4088 SDslu, 3480 SDs, 0 SdLazy, 3853 SolverSat, 440 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3825.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 475 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 324 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 8457.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8190occurred in iteration=0, InterpolantAutomatonStates: 188, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 10779.3ms AutomataMinimizationTime, 35 MinimizatonAttempts, 77633 StatesRemovedByMinimization, 30 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 404.3ms SsaConstructionTime, 1733.6ms SatisfiabilityAnalysisTime, 15335.5ms InterpolantComputationTime, 622 NumberOfCodeBlocks, 595 NumberOfCodeBlocksAsserted, 62 NumberOfCheckSat, 545 ConstructedInterpolants, 1 QuantifiedInterpolants, 12074 SizeOfPredicates, 248 NumberOfNonLiveVariables, 4513 ConjunctsInSsa, 355 ConjunctsInUnsatCore, 60 InterpolantComputations, 25 PerfectInterpolantSequences, 70/136 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 proved your program to be incorrect! [2021-10-07 14:57:38,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...