/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-proofs/counter-add-4-semi-Q67.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 16:19:42,797 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 16:19:42,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 16:19:42,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-06 16:19:42,893 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-06 16:19:42,897 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-06 16:19:42,900 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-06 16:19:42,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-06 16:19:42,918 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-06 16:19:42,919 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-06 16:19:42,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-06 16:19:42,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-06 16:19:42,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-06 16:19:42,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-06 16:19:42,940 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-06 16:19:42,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-06 16:19:42,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-06 16:19:42,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-06 16:19:42,964 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-06 16:19:42,965 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-06 16:19:42,973 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-06 16:19:43,023 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 16:19:43,024 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 16:19:43,025 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 16:19:43,025 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 16:19:43,029 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 16:19:43,029 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 16:19:43,029 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 16:19:43,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 16:19:43,030 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 16:19:43,030 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 16:19:43,031 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 16:19:43,032 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 16:19:43,032 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 16:19:43,032 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-06 16:19:43,032 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 16:19:43,033 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-06 16:19:43,033 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-06 16:19:43,033 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 16:19:43,034 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-06 16:19:43,034 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 16:19:43,034 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-06 16:19:43,034 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 16:19:43,034 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 16:19:43,035 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 16:19:43,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 16:19:43,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 16:19:43,035 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 16:19:43,036 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-06 16:19:43,036 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-06 16:19:43,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-06 16:19:43,036 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-06 16:19:43,037 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 16:19:43,037 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 16:19:43,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 16:19:43,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 16:19:43,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 16:19:43,526 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 16:19:43,526 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 16:19:43,527 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-proofs/counter-add-4-semi-Q67.wvr.c [2021-10-06 16:19:43,613 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e97307964/90d10e5a121a4ea49587ddf108fb8cc4/FLAG9fb422979 [2021-10-06 16:19:44,354 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 16:19:44,356 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-proofs/counter-add-4-semi-Q67.wvr.c [2021-10-06 16:19:44,367 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e97307964/90d10e5a121a4ea49587ddf108fb8cc4/FLAG9fb422979 [2021-10-06 16:19:44,664 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e97307964/90d10e5a121a4ea49587ddf108fb8cc4 [2021-10-06 16:19:44,667 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 16:19:44,676 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-06 16:19:44,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 16:19:44,681 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 16:19:44,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 16:19:44,686 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 04:19:44" (1/1) ... [2021-10-06 16:19:44,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f277c2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:19:44, skipping insertion in model container [2021-10-06 16:19:44,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 04:19:44" (1/1) ... [2021-10-06 16:19:44,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 16:19:44,722 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 16:19:44,958 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-proofs/counter-add-4-semi-Q67.wvr.c[2538,2551] [2021-10-06 16:19:44,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 16:19:44,972 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 16:19:45,001 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-proofs/counter-add-4-semi-Q67.wvr.c[2538,2551] [2021-10-06 16:19:45,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 16:19:45,025 INFO L208 MainTranslator]: Completed translation [2021-10-06 16:19:45,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:19:45 WrapperNode [2021-10-06 16:19:45,026 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 16:19:45,027 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 16:19:45,027 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 16:19:45,028 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 16:19:45,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:19:45" (1/1) ... [2021-10-06 16:19:45,048 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:19:45" (1/1) ... [2021-10-06 16:19:45,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 16:19:45,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 16:19:45,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 16:19:45,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 16:19:45,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:19:45" (1/1) ... [2021-10-06 16:19:45,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:19:45" (1/1) ... [2021-10-06 16:19:45,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:19:45" (1/1) ... [2021-10-06 16:19:45,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:19:45" (1/1) ... [2021-10-06 16:19:45,141 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:19:45" (1/1) ... [2021-10-06 16:19:45,153 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:19:45" (1/1) ... [2021-10-06 16:19:45,157 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:19:45" (1/1) ... [2021-10-06 16:19:45,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 16:19:45,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 16:19:45,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 16:19:45,175 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 16:19:45,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:19:45" (1/1) ... [2021-10-06 16:19:45,193 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 16:19:45,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:19:45,240 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) [2021-10-06 16:19:45,265 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 [2021-10-06 16:19:45,324 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 16:19:45,325 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 16:19:45,325 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 16:19:45,325 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 16:19:45,325 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-06 16:19:45,325 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-06 16:19:45,326 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-06 16:19:45,326 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-06 16:19:45,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-06 16:19:45,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 16:19:45,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-06 16:19:45,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-06 16:19:45,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-06 16:19:45,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 16:19:45,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 16:19:45,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-06 16:19:45,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 16:19:45,331 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-06 16:19:46,261 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 16:19:46,261 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-06 16:19:46,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 04:19:46 BoogieIcfgContainer [2021-10-06 16:19:46,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 16:19:46,271 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 16:19:46,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 16:19:46,281 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 16:19:46,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 04:19:44" (1/3) ... [2021-10-06 16:19:46,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4361dbd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 04:19:46, skipping insertion in model container [2021-10-06 16:19:46,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:19:45" (2/3) ... [2021-10-06 16:19:46,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4361dbd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 04:19:46, skipping insertion in model container [2021-10-06 16:19:46,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 04:19:46" (3/3) ... [2021-10-06 16:19:46,288 INFO L111 eAbstractionObserver]: Analyzing ICFG counter-add-4-semi-Q67.wvr.c [2021-10-06 16:19:46,303 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-06 16:19:46,303 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 16:19:46,304 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-10-06 16:19:46,304 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 16:19:46,360 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,361 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,361 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,361 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,362 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,362 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,362 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,362 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,363 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,363 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,363 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,363 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,364 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,364 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,364 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,364 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,365 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,366 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,366 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,366 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,366 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,367 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,367 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,367 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,367 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,367 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,368 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,368 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,368 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,368 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,369 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,369 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,369 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,369 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,369 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,370 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,370 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,370 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,370 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,371 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,371 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,371 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,371 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,371 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,372 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,372 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,372 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,372 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,373 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,373 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,373 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,373 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,374 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,374 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,375 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,375 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,375 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,375 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,376 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,376 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,376 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,376 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,376 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,377 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,377 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,377 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,377 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,378 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,378 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,379 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,379 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,379 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,379 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,379 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,380 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,380 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,380 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,380 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,381 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,381 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,381 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,381 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,381 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,382 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,382 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,382 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,382 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,382 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,383 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,383 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,383 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,383 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,385 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,386 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,386 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,386 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,386 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,387 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,387 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,387 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,387 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,387 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,388 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,388 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,391 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,392 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,392 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,392 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,394 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,394 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,395 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,395 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,397 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,397 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,397 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,398 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,398 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,398 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,400 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,401 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,401 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,401 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,401 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,402 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:19:46,413 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-06 16:19:46,469 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 16:19:46,477 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 [2021-10-06 16:19:46,478 INFO L340 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2021-10-06 16:19:46,495 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 16:19:46,508 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 134 places, 131 transitions, 294 flow [2021-10-06 16:19:46,511 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 134 places, 131 transitions, 294 flow [2021-10-06 16:19:46,513 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 134 places, 131 transitions, 294 flow [2021-10-06 16:19:46,573 INFO L129 PetriNetUnfolder]: 10/127 cut-off events. [2021-10-06 16:19:46,574 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-06 16:19:46,579 INFO L84 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 127 events. 10/127 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 108 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2021-10-06 16:19:46,584 INFO L116 LiptonReduction]: Number of co-enabled transitions 2160 [2021-10-06 16:19:53,418 INFO L131 LiptonReduction]: Checked pairs total: 3092 [2021-10-06 16:19:53,418 INFO L133 LiptonReduction]: Total number of compositions: 116 [2021-10-06 16:19:53,428 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 54 places, 45 transitions, 122 flow [2021-10-06 16:19:53,654 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3618 states, 2994 states have (on average 5.202070808283233) internal successors, (15575), 3617 states have internal predecessors, (15575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:53,672 INFO L276 IsEmpty]: Start isEmpty. Operand has 3618 states, 2994 states have (on average 5.202070808283233) internal successors, (15575), 3617 states have internal predecessors, (15575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:53,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 16:19:53,678 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:53,679 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 16:19:53,679 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:19:53,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:53,686 INFO L82 PathProgramCache]: Analyzing trace with hash 607771, now seen corresponding path program 1 times [2021-10-06 16:19:53,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:53,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599759387] [2021-10-06 16:19:53,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:53,699 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:53,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:53,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:53,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:53,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599759387] [2021-10-06 16:19:53,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599759387] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:19:53,913 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:19:53,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-06 16:19:53,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373445696] [2021-10-06 16:19:53,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 16:19:53,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:53,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 16:19:53,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:19:53,955 INFO L87 Difference]: Start difference. First operand has 3618 states, 2994 states have (on average 5.202070808283233) internal successors, (15575), 3617 states have internal predecessors, (15575), 0 states have call successors, (0), 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 1.5) 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) [2021-10-06 16:19:54,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:54,125 INFO L93 Difference]: Finished difference Result 2676 states and 11494 transitions. [2021-10-06 16:19:54,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 16:19:54,127 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 3 [2021-10-06 16:19:54,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:54,198 INFO L225 Difference]: With dead ends: 2676 [2021-10-06 16:19:54,198 INFO L226 Difference]: Without dead ends: 2656 [2021-10-06 16:19:54,199 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:19:54,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2656 states. [2021-10-06 16:19:54,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2656 to 2656. [2021-10-06 16:19:54,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2656 states, 2257 states have (on average 5.068232166592822) internal successors, (11439), 2655 states have internal predecessors, (11439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:54,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2656 states to 2656 states and 11439 transitions. [2021-10-06 16:19:54,440 INFO L78 Accepts]: Start accepts. Automaton has 2656 states and 11439 transitions. Word has length 3 [2021-10-06 16:19:54,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:54,441 INFO L470 AbstractCegarLoop]: Abstraction has 2656 states and 11439 transitions. [2021-10-06 16:19:54,441 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) [2021-10-06 16:19:54,441 INFO L276 IsEmpty]: Start isEmpty. Operand 2656 states and 11439 transitions. [2021-10-06 16:19:54,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 16:19:54,442 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:54,442 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 16:19:54,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-06 16:19:54,443 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:19:54,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:54,443 INFO L82 PathProgramCache]: Analyzing trace with hash 607773, now seen corresponding path program 1 times [2021-10-06 16:19:54,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:54,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317282826] [2021-10-06 16:19:54,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:54,444 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:54,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:54,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:54,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:54,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317282826] [2021-10-06 16:19:54,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317282826] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:19:54,488 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:19:54,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-06 16:19:54,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477041040] [2021-10-06 16:19:54,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 16:19:54,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:54,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 16:19:54,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:19:54,492 INFO L87 Difference]: Start difference. First operand 2656 states and 11439 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) [2021-10-06 16:19:54,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:54,637 INFO L93 Difference]: Finished difference Result 4458 states and 19112 transitions. [2021-10-06 16:19:54,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 16:19:54,637 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 3 [2021-10-06 16:19:54,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:54,695 INFO L225 Difference]: With dead ends: 4458 [2021-10-06 16:19:54,695 INFO L226 Difference]: Without dead ends: 4458 [2021-10-06 16:19:54,696 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:19:54,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4458 states. [2021-10-06 16:19:54,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4458 to 3016. [2021-10-06 16:19:54,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3016 states, 2617 states have (on average 5.367596484524264) internal successors, (14047), 3015 states have internal predecessors, (14047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:54,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3016 states to 3016 states and 14047 transitions. [2021-10-06 16:19:54,958 INFO L78 Accepts]: Start accepts. Automaton has 3016 states and 14047 transitions. Word has length 3 [2021-10-06 16:19:54,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:54,959 INFO L470 AbstractCegarLoop]: Abstraction has 3016 states and 14047 transitions. [2021-10-06 16:19:54,959 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) [2021-10-06 16:19:54,959 INFO L276 IsEmpty]: Start isEmpty. Operand 3016 states and 14047 transitions. [2021-10-06 16:19:54,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-06 16:19:54,960 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:54,960 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-06 16:19:54,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-06 16:19:54,961 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:19:54,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:54,961 INFO L82 PathProgramCache]: Analyzing trace with hash 18841444, now seen corresponding path program 1 times [2021-10-06 16:19:54,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:54,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054390460] [2021-10-06 16:19:54,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:54,962 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:54,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:55,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:55,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:55,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054390460] [2021-10-06 16:19:55,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054390460] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:19:55,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:19:55,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-06 16:19:55,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101870845] [2021-10-06 16:19:55,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 16:19:55,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:55,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 16:19:55,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:19:55,019 INFO L87 Difference]: Start difference. First operand 3016 states and 14047 transitions. Second operand has 3 states, 2 states have (on average 2.0) 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) [2021-10-06 16:19:55,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:55,085 INFO L93 Difference]: Finished difference Result 2224 states and 10123 transitions. [2021-10-06 16:19:55,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 16:19:55,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) 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 4 [2021-10-06 16:19:55,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:55,113 INFO L225 Difference]: With dead ends: 2224 [2021-10-06 16:19:55,114 INFO L226 Difference]: Without dead ends: 2224 [2021-10-06 16:19:55,114 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:19:55,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2224 states. [2021-10-06 16:19:55,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2224 to 2224. [2021-10-06 16:19:55,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2224 states, 1969 states have (on average 5.14118842051803) internal successors, (10123), 2223 states have internal predecessors, (10123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:55,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2224 states to 2224 states and 10123 transitions. [2021-10-06 16:19:55,287 INFO L78 Accepts]: Start accepts. Automaton has 2224 states and 10123 transitions. Word has length 4 [2021-10-06 16:19:55,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:55,287 INFO L470 AbstractCegarLoop]: Abstraction has 2224 states and 10123 transitions. [2021-10-06 16:19:55,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) 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) [2021-10-06 16:19:55,288 INFO L276 IsEmpty]: Start isEmpty. Operand 2224 states and 10123 transitions. [2021-10-06 16:19:55,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-06 16:19:55,289 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:55,289 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-06 16:19:55,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-06 16:19:55,290 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:19:55,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:55,293 INFO L82 PathProgramCache]: Analyzing trace with hash 18841446, now seen corresponding path program 1 times [2021-10-06 16:19:55,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:55,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946943323] [2021-10-06 16:19:55,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:55,294 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:55,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:55,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:55,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:55,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946943323] [2021-10-06 16:19:55,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946943323] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:19:55,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145614544] [2021-10-06 16:19:55,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:55,397 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:19:55,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:19:55,401 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) [2021-10-06 16:19:55,403 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 [2021-10-06 16:19:55,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:55,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 16:19:55,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:19:55,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:55,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145614544] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:19:55,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:19:55,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 3 [2021-10-06 16:19:55,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808126679] [2021-10-06 16:19:55,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 16:19:55,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:55,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 16:19:55,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-06 16:19:55,518 INFO L87 Difference]: Start difference. First operand 2224 states and 10123 transitions. Second operand has 5 states, 4 states have (on average 1.75) 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) [2021-10-06 16:19:55,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:55,741 INFO L93 Difference]: Finished difference Result 4364 states and 18850 transitions. [2021-10-06 16:19:55,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-06 16:19:55,742 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) 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 4 [2021-10-06 16:19:55,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:55,792 INFO L225 Difference]: With dead ends: 4364 [2021-10-06 16:19:55,792 INFO L226 Difference]: Without dead ends: 4364 [2021-10-06 16:19:55,793 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.5ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-06 16:19:55,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4364 states. [2021-10-06 16:19:55,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4364 to 2536. [2021-10-06 16:19:56,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2536 states, 2281 states have (on average 5.443226654975888) internal successors, (12416), 2535 states have internal predecessors, (12416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:56,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2536 states to 2536 states and 12416 transitions. [2021-10-06 16:19:56,030 INFO L78 Accepts]: Start accepts. Automaton has 2536 states and 12416 transitions. Word has length 4 [2021-10-06 16:19:56,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:56,030 INFO L470 AbstractCegarLoop]: Abstraction has 2536 states and 12416 transitions. [2021-10-06 16:19:56,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) 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) [2021-10-06 16:19:56,031 INFO L276 IsEmpty]: Start isEmpty. Operand 2536 states and 12416 transitions. [2021-10-06 16:19:56,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-06 16:19:56,032 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:56,032 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-06 16:19:56,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-06 16:19:56,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:19:56,248 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:19:56,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:56,249 INFO L82 PathProgramCache]: Analyzing trace with hash 18841442, now seen corresponding path program 1 times [2021-10-06 16:19:56,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:56,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011583496] [2021-10-06 16:19:56,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:56,250 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:56,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:56,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:56,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:56,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011583496] [2021-10-06 16:19:56,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011583496] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:19:56,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538085633] [2021-10-06 16:19:56,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:56,318 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:19:56,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:19:56,320 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) [2021-10-06 16:19:56,321 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 [2021-10-06 16:19:56,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:56,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 16:19:56,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:19:56,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:56,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538085633] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:19:56,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:19:56,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 3 [2021-10-06 16:19:56,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577835245] [2021-10-06 16:19:56,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 16:19:56,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:56,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 16:19:56,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-06 16:19:56,411 INFO L87 Difference]: Start difference. First operand 2536 states and 12416 transitions. Second operand has 5 states, 4 states have (on average 1.75) 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) [2021-10-06 16:19:56,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:56,560 INFO L93 Difference]: Finished difference Result 4844 states and 21658 transitions. [2021-10-06 16:19:56,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 16:19:56,561 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) 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 4 [2021-10-06 16:19:56,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:56,695 INFO L225 Difference]: With dead ends: 4844 [2021-10-06 16:19:56,695 INFO L226 Difference]: Without dead ends: 4824 [2021-10-06 16:19:56,696 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.5ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-06 16:19:56,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4824 states. [2021-10-06 16:19:56,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4824 to 4308. [2021-10-06 16:19:56,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4308 states, 4053 states have (on average 5.186035035775968) internal successors, (21019), 4307 states have internal predecessors, (21019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:57,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4308 states to 4308 states and 21019 transitions. [2021-10-06 16:19:57,074 INFO L78 Accepts]: Start accepts. Automaton has 4308 states and 21019 transitions. Word has length 4 [2021-10-06 16:19:57,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:57,074 INFO L470 AbstractCegarLoop]: Abstraction has 4308 states and 21019 transitions. [2021-10-06 16:19:57,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) 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) [2021-10-06 16:19:57,075 INFO L276 IsEmpty]: Start isEmpty. Operand 4308 states and 21019 transitions. [2021-10-06 16:19:57,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-06 16:19:57,075 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:57,076 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-06 16:19:57,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-06 16:19:57,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:19:57,291 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:19:57,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:57,293 INFO L82 PathProgramCache]: Analyzing trace with hash 18841443, now seen corresponding path program 1 times [2021-10-06 16:19:57,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:57,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509868856] [2021-10-06 16:19:57,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:57,294 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:57,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:57,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:57,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:57,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509868856] [2021-10-06 16:19:57,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509868856] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:19:57,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:19:57,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-06 16:19:57,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121666683] [2021-10-06 16:19:57,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 16:19:57,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:57,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 16:19:57,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:19:57,350 INFO L87 Difference]: Start difference. First operand 4308 states and 21019 transitions. Second operand has 3 states, 2 states have (on average 2.0) 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) [2021-10-06 16:19:57,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:57,410 INFO L93 Difference]: Finished difference Result 3768 states and 17846 transitions. [2021-10-06 16:19:57,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 16:19:57,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) 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 4 [2021-10-06 16:19:57,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:57,438 INFO L225 Difference]: With dead ends: 3768 [2021-10-06 16:19:57,438 INFO L226 Difference]: Without dead ends: 3768 [2021-10-06 16:19:57,438 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:19:57,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3768 states. [2021-10-06 16:19:57,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3768 to 3768. [2021-10-06 16:19:57,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3768 states, 3577 states have (on average 4.98909700866648) internal successors, (17846), 3767 states have internal predecessors, (17846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:57,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3768 states to 3768 states and 17846 transitions. [2021-10-06 16:19:57,723 INFO L78 Accepts]: Start accepts. Automaton has 3768 states and 17846 transitions. Word has length 4 [2021-10-06 16:19:57,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:57,724 INFO L470 AbstractCegarLoop]: Abstraction has 3768 states and 17846 transitions. [2021-10-06 16:19:57,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) 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) [2021-10-06 16:19:57,724 INFO L276 IsEmpty]: Start isEmpty. Operand 3768 states and 17846 transitions. [2021-10-06 16:19:57,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 16:19:57,725 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:57,725 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2021-10-06 16:19:57,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-06 16:19:57,726 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:19:57,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:57,726 INFO L82 PathProgramCache]: Analyzing trace with hash 584085309, now seen corresponding path program 2 times [2021-10-06 16:19:57,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:57,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363895639] [2021-10-06 16:19:57,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:57,727 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:57,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:57,812 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:57,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:57,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363895639] [2021-10-06 16:19:57,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363895639] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:19:57,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886498542] [2021-10-06 16:19:57,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:19:57,814 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:19:57,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:19:57,816 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) [2021-10-06 16:19:57,837 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 [2021-10-06 16:19:57,903 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 16:19:57,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:19:57,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 16:19:57,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:19:57,994 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-06 16:19:57,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886498542] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:19:57,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 16:19:57,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-06 16:19:57,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263633372] [2021-10-06 16:19:57,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 16:19:57,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:57,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 16:19:57,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-06 16:19:57,997 INFO L87 Difference]: Start difference. First operand 3768 states and 17846 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2021-10-06 16:19:58,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:58,048 INFO L93 Difference]: Finished difference Result 3228 states and 15307 transitions. [2021-10-06 16:19:58,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 16:19:58,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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 5 [2021-10-06 16:19:58,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:58,076 INFO L225 Difference]: With dead ends: 3228 [2021-10-06 16:19:58,076 INFO L226 Difference]: Without dead ends: 3228 [2021-10-06 16:19:58,077 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 19.7ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-06 16:19:58,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3228 states. [2021-10-06 16:19:58,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3228 to 1972. [2021-10-06 16:19:58,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1972 states, 1845 states have (on average 4.555555555555555) internal successors, (8405), 1971 states have internal predecessors, (8405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:58,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1972 states to 1972 states and 8405 transitions. [2021-10-06 16:19:58,256 INFO L78 Accepts]: Start accepts. Automaton has 1972 states and 8405 transitions. Word has length 5 [2021-10-06 16:19:58,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:58,256 INFO L470 AbstractCegarLoop]: Abstraction has 1972 states and 8405 transitions. [2021-10-06 16:19:58,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2021-10-06 16:19:58,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1972 states and 8405 transitions. [2021-10-06 16:19:58,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 16:19:58,257 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:58,257 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2021-10-06 16:19:58,301 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 [2021-10-06 16:19:58,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:19:58,471 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:19:58,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:58,472 INFO L82 PathProgramCache]: Analyzing trace with hash 584085305, now seen corresponding path program 2 times [2021-10-06 16:19:58,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:58,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542711213] [2021-10-06 16:19:58,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:58,474 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:58,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:58,521 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:58,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:58,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542711213] [2021-10-06 16:19:58,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542711213] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:19:58,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829083188] [2021-10-06 16:19:58,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:19:58,523 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:19:58,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:19:58,525 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) [2021-10-06 16:19:58,547 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 [2021-10-06 16:19:58,595 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:19:58,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:19:58,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-06 16:19:58,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:19:58,626 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:58,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829083188] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:19:58,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:19:58,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2021-10-06 16:19:58,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918035345] [2021-10-06 16:19:58,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-06 16:19:58,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:58,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-06 16:19:58,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-06 16:19:58,629 INFO L87 Difference]: Start difference. First operand 1972 states and 8405 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 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) [2021-10-06 16:19:58,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:58,775 INFO L93 Difference]: Finished difference Result 3464 states and 13906 transitions. [2021-10-06 16:19:58,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-06 16:19:58,776 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 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 5 [2021-10-06 16:19:58,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:58,797 INFO L225 Difference]: With dead ends: 3464 [2021-10-06 16:19:58,798 INFO L226 Difference]: Without dead ends: 3444 [2021-10-06 16:19:58,798 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 10.1ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-06 16:19:58,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3444 states. [2021-10-06 16:19:58,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3444 to 2348. [2021-10-06 16:19:58,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2348 states, 2221 states have (on average 4.668167492120666) internal successors, (10368), 2347 states have internal predecessors, (10368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:59,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 10368 transitions. [2021-10-06 16:19:59,020 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 10368 transitions. Word has length 5 [2021-10-06 16:19:59,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:59,020 INFO L470 AbstractCegarLoop]: Abstraction has 2348 states and 10368 transitions. [2021-10-06 16:19:59,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 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) [2021-10-06 16:19:59,024 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 10368 transitions. [2021-10-06 16:19:59,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-06 16:19:59,025 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:59,025 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2021-10-06 16:19:59,100 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 [2021-10-06 16:19:59,225 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 [2021-10-06 16:19:59,226 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:19:59,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:59,227 INFO L82 PathProgramCache]: Analyzing trace with hash 926775874, now seen corresponding path program 3 times [2021-10-06 16:19:59,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:59,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316788935] [2021-10-06 16:19:59,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:59,228 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:59,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:59,276 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:59,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:59,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316788935] [2021-10-06 16:19:59,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316788935] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:19:59,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126247510] [2021-10-06 16:19:59,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:19:59,278 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:19:59,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:19:59,279 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) [2021-10-06 16:19:59,287 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 [2021-10-06 16:19:59,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 16:19:59,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:19:59,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 16:19:59,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:19:59,375 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:59,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126247510] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:19:59,375 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:19:59,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-10-06 16:19:59,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057360193] [2021-10-06 16:19:59,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 16:19:59,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:59,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 16:19:59,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-06 16:19:59,378 INFO L87 Difference]: Start difference. First operand 2348 states and 10368 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:59,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:59,548 INFO L93 Difference]: Finished difference Result 4336 states and 17922 transitions. [2021-10-06 16:19:59,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 16:19:59,549 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-06 16:19:59,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:59,580 INFO L225 Difference]: With dead ends: 4336 [2021-10-06 16:19:59,580 INFO L226 Difference]: Without dead ends: 4316 [2021-10-06 16:19:59,581 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 13.9ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-06 16:19:59,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4316 states. [2021-10-06 16:19:59,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4316 to 2724. [2021-10-06 16:19:59,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2724 states, 2597 states have (on average 4.748170966499807) internal successors, (12331), 2723 states have internal predecessors, (12331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:59,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 12331 transitions. [2021-10-06 16:19:59,758 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 12331 transitions. Word has length 6 [2021-10-06 16:19:59,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:59,758 INFO L470 AbstractCegarLoop]: Abstraction has 2724 states and 12331 transitions. [2021-10-06 16:19:59,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:59,759 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 12331 transitions. [2021-10-06 16:19:59,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-06 16:19:59,760 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:59,760 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-06 16:19:59,810 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 [2021-10-06 16:19:59,975 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 [2021-10-06 16:19:59,976 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:19:59,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:59,977 INFO L82 PathProgramCache]: Analyzing trace with hash 926816709, now seen corresponding path program 1 times [2021-10-06 16:19:59,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:59,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432983088] [2021-10-06 16:19:59,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:59,978 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:00,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:00,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:00,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432983088] [2021-10-06 16:20:00,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432983088] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:20:00,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:20:00,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-06 16:20:00,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806170885] [2021-10-06 16:20:00,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 16:20:00,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:00,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 16:20:00,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:20:00,071 INFO L87 Difference]: Start difference. First operand 2724 states and 12331 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) [2021-10-06 16:20:00,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:00,137 INFO L93 Difference]: Finished difference Result 4296 states and 19206 transitions. [2021-10-06 16:20:00,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 16:20:00,138 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 [2021-10-06 16:20:00,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:00,170 INFO L225 Difference]: With dead ends: 4296 [2021-10-06 16:20:00,170 INFO L226 Difference]: Without dead ends: 4292 [2021-10-06 16:20:00,171 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:20:00,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4292 states. [2021-10-06 16:20:00,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4292 to 3362. [2021-10-06 16:20:00,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3362 states, 3235 states have (on average 4.907882534775888) internal successors, (15877), 3361 states have internal predecessors, (15877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:00,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3362 states to 3362 states and 15877 transitions. [2021-10-06 16:20:00,334 INFO L78 Accepts]: Start accepts. Automaton has 3362 states and 15877 transitions. Word has length 6 [2021-10-06 16:20:00,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:00,335 INFO L470 AbstractCegarLoop]: Abstraction has 3362 states and 15877 transitions. [2021-10-06 16:20:00,335 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) [2021-10-06 16:20:00,336 INFO L276 IsEmpty]: Start isEmpty. Operand 3362 states and 15877 transitions. [2021-10-06 16:20:00,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-06 16:20:00,338 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:00,338 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2021-10-06 16:20:00,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-06 16:20:00,339 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:00,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:00,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1334718375, now seen corresponding path program 4 times [2021-10-06 16:20:00,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:00,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344448987] [2021-10-06 16:20:00,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:00,340 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:00,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:00,398 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:00,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:00,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344448987] [2021-10-06 16:20:00,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344448987] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:00,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111708969] [2021-10-06 16:20:00,399 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 16:20:00,399 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:00,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:00,402 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) [2021-10-06 16:20:00,407 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 [2021-10-06 16:20:00,461 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 16:20:00,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:20:00,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 16:20:00,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:00,499 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:00,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111708969] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:00,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:20:00,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-10-06 16:20:00,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570693552] [2021-10-06 16:20:00,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 16:20:00,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:00,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 16:20:00,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-06 16:20:00,504 INFO L87 Difference]: Start difference. First operand 3362 states and 15877 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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) [2021-10-06 16:20:00,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:00,843 INFO L93 Difference]: Finished difference Result 6346 states and 27952 transitions. [2021-10-06 16:20:00,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 16:20:00,844 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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 7 [2021-10-06 16:20:00,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:00,890 INFO L225 Difference]: With dead ends: 6346 [2021-10-06 16:20:00,891 INFO L226 Difference]: Without dead ends: 6314 [2021-10-06 16:20:00,891 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 18.5ms TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-06 16:20:00,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6314 states. [2021-10-06 16:20:01,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6314 to 3854. [2021-10-06 16:20:01,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3854 states, 3727 states have (on average 4.948752347732761) internal successors, (18444), 3853 states have internal predecessors, (18444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:01,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3854 states to 3854 states and 18444 transitions. [2021-10-06 16:20:01,090 INFO L78 Accepts]: Start accepts. Automaton has 3854 states and 18444 transitions. Word has length 7 [2021-10-06 16:20:01,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:01,091 INFO L470 AbstractCegarLoop]: Abstraction has 3854 states and 18444 transitions. [2021-10-06 16:20:01,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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) [2021-10-06 16:20:01,091 INFO L276 IsEmpty]: Start isEmpty. Operand 3854 states and 18444 transitions. [2021-10-06 16:20:01,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-06 16:20:01,092 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:01,092 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:20:01,130 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 [2021-10-06 16:20:01,307 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,SelfDestructingSolverStorable10 [2021-10-06 16:20:01,308 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:01,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:01,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1295430506, now seen corresponding path program 1 times [2021-10-06 16:20:01,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:01,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645947739] [2021-10-06 16:20:01,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:01,310 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:01,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:01,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:01,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:01,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645947739] [2021-10-06 16:20:01,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645947739] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:20:01,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:20:01,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-06 16:20:01,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876190821] [2021-10-06 16:20:01,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 16:20:01,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:01,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 16:20:01,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:20:01,340 INFO L87 Difference]: Start difference. First operand 3854 states and 18444 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2021-10-06 16:20:01,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:01,462 INFO L93 Difference]: Finished difference Result 5938 states and 28028 transitions. [2021-10-06 16:20:01,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 16:20:01,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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 [2021-10-06 16:20:01,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:01,506 INFO L225 Difference]: With dead ends: 5938 [2021-10-06 16:20:01,507 INFO L226 Difference]: Without dead ends: 5938 [2021-10-06 16:20:01,507 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 [2021-10-06 16:20:01,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5938 states. [2021-10-06 16:20:01,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5938 to 4868. [2021-10-06 16:20:01,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4868 states, 4741 states have (on average 5.061801307740983) internal successors, (23998), 4867 states have internal predecessors, (23998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:01,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4868 states to 4868 states and 23998 transitions. [2021-10-06 16:20:01,777 INFO L78 Accepts]: Start accepts. Automaton has 4868 states and 23998 transitions. Word has length 7 [2021-10-06 16:20:01,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:01,780 INFO L470 AbstractCegarLoop]: Abstraction has 4868 states and 23998 transitions. [2021-10-06 16:20:01,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2021-10-06 16:20:01,784 INFO L276 IsEmpty]: Start isEmpty. Operand 4868 states and 23998 transitions. [2021-10-06 16:20:01,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-06 16:20:01,788 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:01,788 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1] [2021-10-06 16:20:01,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-06 16:20:01,789 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:01,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:01,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1573403938, now seen corresponding path program 5 times [2021-10-06 16:20:01,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:01,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871464179] [2021-10-06 16:20:01,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:01,791 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:01,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:01,865 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:01,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:01,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871464179] [2021-10-06 16:20:01,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871464179] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:01,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130421647] [2021-10-06 16:20:01,866 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 16:20:01,866 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:01,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:01,867 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) [2021-10-06 16:20:01,886 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 [2021-10-06 16:20:01,937 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-06 16:20:01,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:20:01,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 16:20:01,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:01,970 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:01,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130421647] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:01,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:20:01,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-10-06 16:20:01,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866666697] [2021-10-06 16:20:01,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-06 16:20:01,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:01,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-06 16:20:01,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-06 16:20:01,973 INFO L87 Difference]: Start difference. First operand 4868 states and 23998 transitions. Second operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 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) [2021-10-06 16:20:02,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:02,264 INFO L93 Difference]: Finished difference Result 9312 states and 43074 transitions. [2021-10-06 16:20:02,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-06 16:20:02,265 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 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 8 [2021-10-06 16:20:02,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:02,337 INFO L225 Difference]: With dead ends: 9312 [2021-10-06 16:20:02,337 INFO L226 Difference]: Without dead ends: 9280 [2021-10-06 16:20:02,338 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 22.7ms TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-06 16:20:02,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9280 states. [2021-10-06 16:20:02,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9280 to 5508. [2021-10-06 16:20:02,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5508 states, 5381 states have (on average 5.084370934770488) internal successors, (27359), 5507 states have internal predecessors, (27359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:02,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5508 states to 5508 states and 27359 transitions. [2021-10-06 16:20:02,818 INFO L78 Accepts]: Start accepts. Automaton has 5508 states and 27359 transitions. Word has length 8 [2021-10-06 16:20:02,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:02,819 INFO L470 AbstractCegarLoop]: Abstraction has 5508 states and 27359 transitions. [2021-10-06 16:20:02,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 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) [2021-10-06 16:20:02,819 INFO L276 IsEmpty]: Start isEmpty. Operand 5508 states and 27359 transitions. [2021-10-06 16:20:02,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-06 16:20:02,820 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:02,820 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-10-06 16:20:02,877 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-10-06 16:20:03,034 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,SelfDestructingSolverStorable12 [2021-10-06 16:20:03,035 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:03,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:03,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1574669676, now seen corresponding path program 1 times [2021-10-06 16:20:03,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:03,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595191728] [2021-10-06 16:20:03,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:03,036 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:03,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:03,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 16:20:03,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:03,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595191728] [2021-10-06 16:20:03,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595191728] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:03,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408854588] [2021-10-06 16:20:03,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:03,074 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:03,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:03,076 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) [2021-10-06 16:20:03,099 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 [2021-10-06 16:20:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:03,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 16:20:03,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:03,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 16:20:03,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408854588] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:20:03,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 16:20:03,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2021-10-06 16:20:03,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891410226] [2021-10-06 16:20:03,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 16:20:03,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:03,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 16:20:03,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-06 16:20:03,187 INFO L87 Difference]: Start difference. First operand 5508 states and 27359 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:03,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:03,259 INFO L93 Difference]: Finished difference Result 6006 states and 28109 transitions. [2021-10-06 16:20:03,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 16:20:03,259 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-06 16:20:03,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:03,290 INFO L225 Difference]: With dead ends: 6006 [2021-10-06 16:20:03,290 INFO L226 Difference]: Without dead ends: 6006 [2021-10-06 16:20:03,290 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-06 16:20:03,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6006 states. [2021-10-06 16:20:03,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6006 to 4578. [2021-10-06 16:20:03,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4578 states, 4483 states have (on average 5.043720722730314) internal successors, (22611), 4577 states have internal predecessors, (22611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:03,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4578 states to 4578 states and 22611 transitions. [2021-10-06 16:20:03,639 INFO L78 Accepts]: Start accepts. Automaton has 4578 states and 22611 transitions. Word has length 8 [2021-10-06 16:20:03,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:03,640 INFO L470 AbstractCegarLoop]: Abstraction has 4578 states and 22611 transitions. [2021-10-06 16:20:03,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:03,640 INFO L276 IsEmpty]: Start isEmpty. Operand 4578 states and 22611 transitions. [2021-10-06 16:20:03,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-06 16:20:03,642 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:03,642 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-10-06 16:20:03,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-06 16:20:03,857 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,SelfDestructingSolverStorable13 [2021-10-06 16:20:03,857 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:03,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:03,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1574669678, now seen corresponding path program 1 times [2021-10-06 16:20:03,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:03,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367937492] [2021-10-06 16:20:03,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:03,859 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:03,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:03,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 16:20:03,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:03,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367937492] [2021-10-06 16:20:03,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367937492] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:03,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665741620] [2021-10-06 16:20:03,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:03,900 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:03,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:03,901 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) [2021-10-06 16:20:03,919 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 [2021-10-06 16:20:03,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:03,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 16:20:03,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:04,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 16:20:04,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665741620] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:04,016 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:20:04,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 3 [2021-10-06 16:20:04,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996068723] [2021-10-06 16:20:04,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 16:20:04,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:04,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 16:20:04,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-06 16:20:04,018 INFO L87 Difference]: Start difference. First operand 4578 states and 22611 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2021-10-06 16:20:04,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:04,145 INFO L93 Difference]: Finished difference Result 8534 states and 39795 transitions. [2021-10-06 16:20:04,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 16:20:04,146 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 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 8 [2021-10-06 16:20:04,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:04,193 INFO L225 Difference]: With dead ends: 8534 [2021-10-06 16:20:04,194 INFO L226 Difference]: Without dead ends: 8526 [2021-10-06 16:20:04,194 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-06 16:20:04,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8526 states. [2021-10-06 16:20:04,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8526 to 5612. [2021-10-06 16:20:04,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5612 states, 5517 states have (on average 5.177088997643647) internal successors, (28562), 5611 states have internal predecessors, (28562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:04,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5612 states to 5612 states and 28562 transitions. [2021-10-06 16:20:04,662 INFO L78 Accepts]: Start accepts. Automaton has 5612 states and 28562 transitions. Word has length 8 [2021-10-06 16:20:04,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:04,662 INFO L470 AbstractCegarLoop]: Abstraction has 5612 states and 28562 transitions. [2021-10-06 16:20:04,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2021-10-06 16:20:04,663 INFO L276 IsEmpty]: Start isEmpty. Operand 5612 states and 28562 transitions. [2021-10-06 16:20:04,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-06 16:20:04,665 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:04,666 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:20:04,707 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 [2021-10-06 16:20:04,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:04,880 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:04,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:04,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1503639493, now seen corresponding path program 1 times [2021-10-06 16:20:04,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:04,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119673187] [2021-10-06 16:20:04,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:04,884 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:04,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:04,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:04,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:04,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119673187] [2021-10-06 16:20:04,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119673187] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:20:04,917 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:20:04,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-06 16:20:04,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403101848] [2021-10-06 16:20:04,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 16:20:04,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:04,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 16:20:04,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:20:04,920 INFO L87 Difference]: Start difference. First operand 5612 states and 28562 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) [2021-10-06 16:20:04,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:04,985 INFO L93 Difference]: Finished difference Result 4678 states and 23594 transitions. [2021-10-06 16:20:04,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 16:20:04,986 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 [2021-10-06 16:20:04,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:05,017 INFO L225 Difference]: With dead ends: 4678 [2021-10-06 16:20:05,017 INFO L226 Difference]: Without dead ends: 4678 [2021-10-06 16:20:05,018 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:20:05,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4678 states. [2021-10-06 16:20:05,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4678 to 4678. [2021-10-06 16:20:05,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4678 states, 4607 states have (on average 5.121337095723899) internal successors, (23594), 4677 states have internal predecessors, (23594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:05,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4678 states to 4678 states and 23594 transitions. [2021-10-06 16:20:05,199 INFO L78 Accepts]: Start accepts. Automaton has 4678 states and 23594 transitions. Word has length 8 [2021-10-06 16:20:05,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:05,199 INFO L470 AbstractCegarLoop]: Abstraction has 4678 states and 23594 transitions. [2021-10-06 16:20:05,199 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) [2021-10-06 16:20:05,199 INFO L276 IsEmpty]: Start isEmpty. Operand 4678 states and 23594 transitions. [2021-10-06 16:20:05,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-06 16:20:05,200 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:05,200 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:20:05,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-06 16:20:05,201 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:05,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:05,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1503639491, now seen corresponding path program 1 times [2021-10-06 16:20:05,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:05,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171727490] [2021-10-06 16:20:05,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:05,203 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:05,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:05,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:05,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:05,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171727490] [2021-10-06 16:20:05,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171727490] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:05,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702740885] [2021-10-06 16:20:05,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:05,255 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:05,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:05,256 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) [2021-10-06 16:20:05,277 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 [2021-10-06 16:20:05,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:05,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 16:20:05,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:05,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:05,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702740885] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:05,352 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:20:05,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 3 [2021-10-06 16:20:05,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427857103] [2021-10-06 16:20:05,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 16:20:05,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:05,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 16:20:05,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-06 16:20:05,354 INFO L87 Difference]: Start difference. First operand 4678 states and 23594 transitions. Second operand has 5 states, 4 states have (on average 3.75) 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) [2021-10-06 16:20:05,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:05,610 INFO L93 Difference]: Finished difference Result 8248 states and 39638 transitions. [2021-10-06 16:20:05,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 16:20:05,611 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) 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 8 [2021-10-06 16:20:05,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:05,655 INFO L225 Difference]: With dead ends: 8248 [2021-10-06 16:20:05,655 INFO L226 Difference]: Without dead ends: 8248 [2021-10-06 16:20:05,655 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.2ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-06 16:20:05,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8248 states. [2021-10-06 16:20:05,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8248 to 5832. [2021-10-06 16:20:05,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5832 states, 5761 states have (on average 5.232077764277035) internal successors, (30142), 5831 states have internal predecessors, (30142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:06,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5832 states to 5832 states and 30142 transitions. [2021-10-06 16:20:06,067 INFO L78 Accepts]: Start accepts. Automaton has 5832 states and 30142 transitions. Word has length 8 [2021-10-06 16:20:06,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:06,069 INFO L470 AbstractCegarLoop]: Abstraction has 5832 states and 30142 transitions. [2021-10-06 16:20:06,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) 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) [2021-10-06 16:20:06,070 INFO L276 IsEmpty]: Start isEmpty. Operand 5832 states and 30142 transitions. [2021-10-06 16:20:06,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-06 16:20:06,070 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:06,070 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1, 1] [2021-10-06 16:20:06,110 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 [2021-10-06 16:20:06,283 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,SelfDestructingSolverStorable16 [2021-10-06 16:20:06,284 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:06,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:06,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1530882425, now seen corresponding path program 6 times [2021-10-06 16:20:06,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:06,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741310235] [2021-10-06 16:20:06,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:06,285 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:06,424 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:06,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:06,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741310235] [2021-10-06 16:20:06,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741310235] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:06,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403202108] [2021-10-06 16:20:06,425 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 16:20:06,426 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:06,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:06,427 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) [2021-10-06 16:20:06,433 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 [2021-10-06 16:20:06,501 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-06 16:20:06,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:20:06,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 16:20:06,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:06,543 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:06,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403202108] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:06,543 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:20:06,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-10-06 16:20:06,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891200002] [2021-10-06 16:20:06,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 16:20:06,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:06,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 16:20:06,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-06 16:20:06,547 INFO L87 Difference]: Start difference. First operand 5832 states and 30142 transitions. Second operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 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) [2021-10-06 16:20:06,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:06,828 INFO L93 Difference]: Finished difference Result 10892 states and 53903 transitions. [2021-10-06 16:20:06,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 16:20:06,829 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 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 9 [2021-10-06 16:20:06,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:06,904 INFO L225 Difference]: With dead ends: 10892 [2021-10-06 16:20:06,904 INFO L226 Difference]: Without dead ends: 10844 [2021-10-06 16:20:06,905 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 30.0ms TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-06 16:20:06,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10844 states. [2021-10-06 16:20:07,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10844 to 6538. [2021-10-06 16:20:07,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6538 states, 6467 states have (on average 5.2321014380702024) internal successors, (33836), 6537 states have internal predecessors, (33836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:07,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6538 states to 6538 states and 33836 transitions. [2021-10-06 16:20:07,463 INFO L78 Accepts]: Start accepts. Automaton has 6538 states and 33836 transitions. Word has length 9 [2021-10-06 16:20:07,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:07,463 INFO L470 AbstractCegarLoop]: Abstraction has 6538 states and 33836 transitions. [2021-10-06 16:20:07,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 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) [2021-10-06 16:20:07,464 INFO L276 IsEmpty]: Start isEmpty. Operand 6538 states and 33836 transitions. [2021-10-06 16:20:07,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-06 16:20:07,465 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:07,465 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:20:07,494 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 [2021-10-06 16:20:07,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-06 16:20:07,680 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:07,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:07,681 INFO L82 PathProgramCache]: Analyzing trace with hash 631816504, now seen corresponding path program 2 times [2021-10-06 16:20:07,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:07,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8235960] [2021-10-06 16:20:07,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:07,682 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:07,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:07,730 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:07,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:07,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8235960] [2021-10-06 16:20:07,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8235960] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:07,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888828615] [2021-10-06 16:20:07,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:20:07,731 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:07,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:07,732 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) [2021-10-06 16:20:07,748 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 [2021-10-06 16:20:07,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 16:20:07,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:20:07,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 16:20:07,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:07,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-06 16:20:07,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888828615] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:20:07,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 16:20:07,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-06 16:20:07,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574656207] [2021-10-06 16:20:07,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 16:20:07,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:07,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 16:20:07,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-06 16:20:07,845 INFO L87 Difference]: Start difference. First operand 6538 states and 33836 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) [2021-10-06 16:20:08,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:08,044 INFO L93 Difference]: Finished difference Result 5494 states and 28252 transitions. [2021-10-06 16:20:08,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 16:20:08,044 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 9 [2021-10-06 16:20:08,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:08,079 INFO L225 Difference]: With dead ends: 5494 [2021-10-06 16:20:08,080 INFO L226 Difference]: Without dead ends: 5494 [2021-10-06 16:20:08,080 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 9.7ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-06 16:20:08,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5494 states. [2021-10-06 16:20:08,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5494 to 2866. [2021-10-06 16:20:08,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2866 states, 2819 states have (on average 4.749911316069528) internal successors, (13390), 2865 states have internal predecessors, (13390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:08,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2866 states to 2866 states and 13390 transitions. [2021-10-06 16:20:08,219 INFO L78 Accepts]: Start accepts. Automaton has 2866 states and 13390 transitions. Word has length 9 [2021-10-06 16:20:08,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:08,220 INFO L470 AbstractCegarLoop]: Abstraction has 2866 states and 13390 transitions. [2021-10-06 16:20:08,220 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) [2021-10-06 16:20:08,220 INFO L276 IsEmpty]: Start isEmpty. Operand 2866 states and 13390 transitions. [2021-10-06 16:20:08,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-06 16:20:08,221 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:08,221 INFO L512 BasicCegarLoop]: trace histogram [7, 1, 1, 1] [2021-10-06 16:20:08,265 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 [2021-10-06 16:20:08,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:08,437 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:08,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:08,438 INFO L82 PathProgramCache]: Analyzing trace with hash 212715522, now seen corresponding path program 7 times [2021-10-06 16:20:08,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:08,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536711963] [2021-10-06 16:20:08,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:08,439 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:08,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:08,502 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:08,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:08,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536711963] [2021-10-06 16:20:08,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536711963] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:08,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449786287] [2021-10-06 16:20:08,503 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 16:20:08,504 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:08,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:08,505 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) [2021-10-06 16:20:08,535 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 [2021-10-06 16:20:08,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:08,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 16:20:08,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:08,633 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:08,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449786287] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:08,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:20:08,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-10-06 16:20:08,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253719683] [2021-10-06 16:20:08,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 16:20:08,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:08,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 16:20:08,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-06 16:20:08,636 INFO L87 Difference]: Start difference. First operand 2866 states and 13390 transitions. Second operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 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) [2021-10-06 16:20:08,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:08,864 INFO L93 Difference]: Finished difference Result 5242 states and 23528 transitions. [2021-10-06 16:20:08,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 16:20:08,865 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 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 10 [2021-10-06 16:20:08,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:08,959 INFO L225 Difference]: With dead ends: 5242 [2021-10-06 16:20:08,959 INFO L226 Difference]: Without dead ends: 5194 [2021-10-06 16:20:08,960 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 33.0ms TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-06 16:20:08,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5194 states. [2021-10-06 16:20:09,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5194 to 3158. [2021-10-06 16:20:09,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3158 states, 3111 states have (on average 4.752169720347156) internal successors, (14784), 3157 states have internal predecessors, (14784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:09,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3158 states to 3158 states and 14784 transitions. [2021-10-06 16:20:09,086 INFO L78 Accepts]: Start accepts. Automaton has 3158 states and 14784 transitions. Word has length 10 [2021-10-06 16:20:09,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:09,086 INFO L470 AbstractCegarLoop]: Abstraction has 3158 states and 14784 transitions. [2021-10-06 16:20:09,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 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) [2021-10-06 16:20:09,087 INFO L276 IsEmpty]: Start isEmpty. Operand 3158 states and 14784 transitions. [2021-10-06 16:20:09,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-06 16:20:09,088 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:09,088 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2021-10-06 16:20:09,129 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 [2021-10-06 16:20:09,301 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,SelfDestructingSolverStorable19 [2021-10-06 16:20:09,302 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:09,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:09,303 INFO L82 PathProgramCache]: Analyzing trace with hash 251953255, now seen corresponding path program 2 times [2021-10-06 16:20:09,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:09,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360397904] [2021-10-06 16:20:09,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:09,304 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:09,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:09,344 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-06 16:20:09,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:09,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360397904] [2021-10-06 16:20:09,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360397904] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:09,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596525746] [2021-10-06 16:20:09,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:20:09,345 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:09,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:09,346 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) [2021-10-06 16:20:09,383 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 [2021-10-06 16:20:09,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 16:20:09,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:20:09,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 16:20:09,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:09,500 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 16:20:09,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596525746] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:20:09,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 16:20:09,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-06 16:20:09,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311884733] [2021-10-06 16:20:09,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 16:20:09,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:09,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 16:20:09,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-06 16:20:09,502 INFO L87 Difference]: Start difference. First operand 3158 states and 14784 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2021-10-06 16:20:09,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:09,532 INFO L93 Difference]: Finished difference Result 2630 states and 12321 transitions. [2021-10-06 16:20:09,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 16:20:09,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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 10 [2021-10-06 16:20:09,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:09,544 INFO L225 Difference]: With dead ends: 2630 [2021-10-06 16:20:09,545 INFO L226 Difference]: Without dead ends: 2558 [2021-10-06 16:20:09,545 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 10.3ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-06 16:20:09,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2558 states. [2021-10-06 16:20:09,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2558 to 1416. [2021-10-06 16:20:09,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1385 states have (on average 4.245487364620939) internal successors, (5880), 1415 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:09,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 5880 transitions. [2021-10-06 16:20:09,586 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 5880 transitions. Word has length 10 [2021-10-06 16:20:09,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:09,586 INFO L470 AbstractCegarLoop]: Abstraction has 1416 states and 5880 transitions. [2021-10-06 16:20:09,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2021-10-06 16:20:09,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 5880 transitions. [2021-10-06 16:20:09,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-06 16:20:09,587 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:09,587 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:20:09,614 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 [2021-10-06 16:20:09,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:09,798 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:09,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:09,798 INFO L82 PathProgramCache]: Analyzing trace with hash -686284189, now seen corresponding path program 1 times [2021-10-06 16:20:09,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:09,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459284068] [2021-10-06 16:20:09,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:09,799 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:09,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:09,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:09,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459284068] [2021-10-06 16:20:09,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459284068] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:20:09,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:20:09,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-06 16:20:09,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882612834] [2021-10-06 16:20:09,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 16:20:09,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:09,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 16:20:09,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:20:09,835 INFO L87 Difference]: Start difference. First operand 1416 states and 5880 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) [2021-10-06 16:20:09,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:09,860 INFO L93 Difference]: Finished difference Result 2020 states and 8338 transitions. [2021-10-06 16:20:09,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 16:20:09,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-06 16:20:09,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:09,869 INFO L225 Difference]: With dead ends: 2020 [2021-10-06 16:20:09,870 INFO L226 Difference]: Without dead ends: 2004 [2021-10-06 16:20:09,870 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 [2021-10-06 16:20:09,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2004 states. [2021-10-06 16:20:09,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2004 to 1708. [2021-10-06 16:20:09,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1708 states, 1677 states have (on average 4.376267143709004) internal successors, (7339), 1707 states have internal predecessors, (7339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:09,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1708 states to 1708 states and 7339 transitions. [2021-10-06 16:20:09,926 INFO L78 Accepts]: Start accepts. Automaton has 1708 states and 7339 transitions. Word has length 10 [2021-10-06 16:20:09,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:09,927 INFO L470 AbstractCegarLoop]: Abstraction has 1708 states and 7339 transitions. [2021-10-06 16:20:09,927 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) [2021-10-06 16:20:09,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1708 states and 7339 transitions. [2021-10-06 16:20:09,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-06 16:20:09,928 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:09,928 INFO L512 BasicCegarLoop]: trace histogram [8, 1, 1, 1] [2021-10-06 16:20:09,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-10-06 16:20:09,929 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:09,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:09,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1995752807, now seen corresponding path program 8 times [2021-10-06 16:20:09,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:09,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383731088] [2021-10-06 16:20:09,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:09,930 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:09,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:10,004 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:10,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:10,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383731088] [2021-10-06 16:20:10,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383731088] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:10,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762685849] [2021-10-06 16:20:10,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:20:10,006 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:10,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:10,007 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) [2021-10-06 16:20:10,013 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 [2021-10-06 16:20:10,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:20:10,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:20:10,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 16:20:10,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:10,176 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:10,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762685849] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:10,177 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:20:10,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-10-06 16:20:10,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019004122] [2021-10-06 16:20:10,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 16:20:10,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:10,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 16:20:10,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-06 16:20:10,178 INFO L87 Difference]: Start difference. First operand 1708 states and 7339 transitions. Second operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 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) [2021-10-06 16:20:10,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:10,341 INFO L93 Difference]: Finished difference Result 3206 states and 13302 transitions. [2021-10-06 16:20:10,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 16:20:10,342 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 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 11 [2021-10-06 16:20:10,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:10,354 INFO L225 Difference]: With dead ends: 3206 [2021-10-06 16:20:10,355 INFO L226 Difference]: Without dead ends: 3126 [2021-10-06 16:20:10,355 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 40.1ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-06 16:20:10,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3126 states. [2021-10-06 16:20:10,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3126 to 1858. [2021-10-06 16:20:10,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1858 states, 1827 states have (on average 4.376026272577997) internal successors, (7995), 1857 states have internal predecessors, (7995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:10,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 7995 transitions. [2021-10-06 16:20:10,408 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 7995 transitions. Word has length 11 [2021-10-06 16:20:10,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:10,408 INFO L470 AbstractCegarLoop]: Abstraction has 1858 states and 7995 transitions. [2021-10-06 16:20:10,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 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) [2021-10-06 16:20:10,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 7995 transitions. [2021-10-06 16:20:10,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-06 16:20:10,410 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:10,410 INFO L512 BasicCegarLoop]: trace histogram [9, 1, 1, 1] [2021-10-06 16:20:10,438 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-10-06 16:20:10,622 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 [2021-10-06 16:20:10,623 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:10,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:10,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1738794270, now seen corresponding path program 9 times [2021-10-06 16:20:10,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:10,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933650325] [2021-10-06 16:20:10,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:10,625 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:10,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:10,705 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:10,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:10,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933650325] [2021-10-06 16:20:10,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933650325] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:10,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416340004] [2021-10-06 16:20:10,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:20:10,706 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:10,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:10,707 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) [2021-10-06 16:20:10,739 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 [2021-10-06 16:20:10,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-06 16:20:10,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:20:10,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 16:20:10,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:10,880 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:10,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416340004] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:10,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:20:10,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-10-06 16:20:10,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462729341] [2021-10-06 16:20:10,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-06 16:20:10,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:10,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-06 16:20:10,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-06 16:20:10,884 INFO L87 Difference]: Start difference. First operand 1858 states and 7995 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 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) [2021-10-06 16:20:11,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:11,055 INFO L93 Difference]: Finished difference Result 3522 states and 14641 transitions. [2021-10-06 16:20:11,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 16:20:11,056 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 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 12 [2021-10-06 16:20:11,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:11,071 INFO L225 Difference]: With dead ends: 3522 [2021-10-06 16:20:11,071 INFO L226 Difference]: Without dead ends: 3438 [2021-10-06 16:20:11,071 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 47.8ms TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-06 16:20:11,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3438 states. [2021-10-06 16:20:11,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3438 to 2008. [2021-10-06 16:20:11,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2008 states, 1977 states have (on average 4.375821952453212) internal successors, (8651), 2007 states have internal predecessors, (8651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:11,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 8651 transitions. [2021-10-06 16:20:11,123 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 8651 transitions. Word has length 12 [2021-10-06 16:20:11,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:11,124 INFO L470 AbstractCegarLoop]: Abstraction has 2008 states and 8651 transitions. [2021-10-06 16:20:11,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 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) [2021-10-06 16:20:11,124 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 8651 transitions. [2021-10-06 16:20:11,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-06 16:20:11,125 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:11,126 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:20:11,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-06 16:20:11,339 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 [2021-10-06 16:20:11,340 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:11,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:11,341 INFO L82 PathProgramCache]: Analyzing trace with hash 456985590, now seen corresponding path program 1 times [2021-10-06 16:20:11,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:11,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805797507] [2021-10-06 16:20:11,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:11,342 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:11,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:11,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 16:20:11,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:11,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805797507] [2021-10-06 16:20:11,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805797507] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:20:11,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:20:11,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-06 16:20:11,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106680316] [2021-10-06 16:20:11,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 16:20:11,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:11,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 16:20:11,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:20:11,369 INFO L87 Difference]: Start difference. First operand 2008 states and 8651 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) [2021-10-06 16:20:11,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:11,391 INFO L93 Difference]: Finished difference Result 1708 states and 7226 transitions. [2021-10-06 16:20:11,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 16:20:11,392 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 12 [2021-10-06 16:20:11,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:11,400 INFO L225 Difference]: With dead ends: 1708 [2021-10-06 16:20:11,400 INFO L226 Difference]: Without dead ends: 1708 [2021-10-06 16:20:11,400 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:20:11,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1708 states. [2021-10-06 16:20:11,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1708 to 1708. [2021-10-06 16:20:11,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1708 states, 1685 states have (on average 4.288427299703264) internal successors, (7226), 1707 states have internal predecessors, (7226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:11,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1708 states to 1708 states and 7226 transitions. [2021-10-06 16:20:11,441 INFO L78 Accepts]: Start accepts. Automaton has 1708 states and 7226 transitions. Word has length 12 [2021-10-06 16:20:11,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:11,441 INFO L470 AbstractCegarLoop]: Abstraction has 1708 states and 7226 transitions. [2021-10-06 16:20:11,442 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) [2021-10-06 16:20:11,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1708 states and 7226 transitions. [2021-10-06 16:20:11,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-06 16:20:11,444 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:11,444 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:20:11,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-10-06 16:20:11,444 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:11,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:11,445 INFO L82 PathProgramCache]: Analyzing trace with hash 456985591, now seen corresponding path program 1 times [2021-10-06 16:20:11,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:11,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414576873] [2021-10-06 16:20:11,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:11,446 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:11,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:11,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 16:20:11,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:11,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414576873] [2021-10-06 16:20:11,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414576873] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:11,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442637933] [2021-10-06 16:20:11,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:11,478 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:11,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:11,483 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) [2021-10-06 16:20:11,504 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 [2021-10-06 16:20:11,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:11,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 16:20:11,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:11,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 16:20:11,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442637933] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:11,640 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:20:11,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 3 [2021-10-06 16:20:11,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367429894] [2021-10-06 16:20:11,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 16:20:11,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:11,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 16:20:11,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-06 16:20:11,641 INFO L87 Difference]: Start difference. First operand 1708 states and 7226 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:11,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:11,673 INFO L93 Difference]: Finished difference Result 2740 states and 11143 transitions. [2021-10-06 16:20:11,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 16:20:11,674 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 [2021-10-06 16:20:11,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:11,682 INFO L225 Difference]: With dead ends: 2740 [2021-10-06 16:20:11,682 INFO L226 Difference]: Without dead ends: 2712 [2021-10-06 16:20:11,682 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.9ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-06 16:20:11,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2712 states. [2021-10-06 16:20:11,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2712 to 2048. [2021-10-06 16:20:11,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2048 states, 2025 states have (on average 4.403456790123457) internal successors, (8917), 2047 states have internal predecessors, (8917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:11,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2048 states to 2048 states and 8917 transitions. [2021-10-06 16:20:11,726 INFO L78 Accepts]: Start accepts. Automaton has 2048 states and 8917 transitions. Word has length 12 [2021-10-06 16:20:11,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:11,726 INFO L470 AbstractCegarLoop]: Abstraction has 2048 states and 8917 transitions. [2021-10-06 16:20:11,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:11,726 INFO L276 IsEmpty]: Start isEmpty. Operand 2048 states and 8917 transitions. [2021-10-06 16:20:11,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-06 16:20:11,728 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:11,729 INFO L512 BasicCegarLoop]: trace histogram [10, 1, 1, 1] [2021-10-06 16:20:11,754 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 [2021-10-06 16:20:11,929 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,SelfDestructingSolverStorable25 [2021-10-06 16:20:11,930 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:11,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:11,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1931953081, now seen corresponding path program 10 times [2021-10-06 16:20:11,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:11,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115325687] [2021-10-06 16:20:11,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:11,932 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:11,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:12,021 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:12,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:12,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115325687] [2021-10-06 16:20:12,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115325687] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:12,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711555188] [2021-10-06 16:20:12,022 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 16:20:12,023 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:12,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:12,029 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) [2021-10-06 16:20:12,045 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 [2021-10-06 16:20:12,118 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 16:20:12,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:20:12,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 16:20:12,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:12,173 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:12,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711555188] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:12,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:20:12,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-10-06 16:20:12,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892099682] [2021-10-06 16:20:12,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 16:20:12,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:12,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 16:20:12,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-10-06 16:20:12,178 INFO L87 Difference]: Start difference. First operand 2048 states and 8917 transitions. Second operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 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) [2021-10-06 16:20:12,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:12,355 INFO L93 Difference]: Finished difference Result 3878 states and 16488 transitions. [2021-10-06 16:20:12,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-06 16:20:12,355 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 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 13 [2021-10-06 16:20:12,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:12,373 INFO L225 Difference]: With dead ends: 3878 [2021-10-06 16:20:12,374 INFO L226 Difference]: Without dead ends: 3750 [2021-10-06 16:20:12,374 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 54.7ms TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-10-06 16:20:12,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3750 states. [2021-10-06 16:20:12,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3750 to 2206. [2021-10-06 16:20:12,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2206 states, 2183 states have (on average 4.396701786532295) internal successors, (9598), 2205 states have internal predecessors, (9598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:12,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2206 states to 2206 states and 9598 transitions. [2021-10-06 16:20:12,449 INFO L78 Accepts]: Start accepts. Automaton has 2206 states and 9598 transitions. Word has length 13 [2021-10-06 16:20:12,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:12,450 INFO L470 AbstractCegarLoop]: Abstraction has 2206 states and 9598 transitions. [2021-10-06 16:20:12,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 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) [2021-10-06 16:20:12,450 INFO L276 IsEmpty]: Start isEmpty. Operand 2206 states and 9598 transitions. [2021-10-06 16:20:12,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 16:20:12,451 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:12,451 INFO L512 BasicCegarLoop]: trace histogram [11, 1, 1, 1] [2021-10-06 16:20:12,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-06 16:20:12,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-06 16:20:12,657 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:12,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:12,658 INFO L82 PathProgramCache]: Analyzing trace with hash -238996030, now seen corresponding path program 11 times [2021-10-06 16:20:12,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:12,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82763137] [2021-10-06 16:20:12,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:12,659 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:12,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:12,790 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:12,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:12,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82763137] [2021-10-06 16:20:12,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82763137] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:12,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052257929] [2021-10-06 16:20:12,791 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 16:20:12,791 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:12,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:12,793 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) [2021-10-06 16:20:12,795 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 [2021-10-06 16:20:12,896 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-10-06 16:20:12,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:20:12,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 16:20:12,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:12,945 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:12,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052257929] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:12,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:20:12,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-10-06 16:20:12,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856194433] [2021-10-06 16:20:12,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 16:20:12,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:12,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 16:20:12,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-10-06 16:20:12,948 INFO L87 Difference]: Start difference. First operand 2206 states and 9598 transitions. Second operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:13,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:13,149 INFO L93 Difference]: Finished difference Result 4202 states and 17874 transitions. [2021-10-06 16:20:13,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-06 16:20:13,149 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 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 [2021-10-06 16:20:13,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:13,163 INFO L225 Difference]: With dead ends: 4202 [2021-10-06 16:20:13,164 INFO L226 Difference]: Without dead ends: 4070 [2021-10-06 16:20:13,164 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 72.0ms TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-10-06 16:20:13,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4070 states. [2021-10-06 16:20:13,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4070 to 2364. [2021-10-06 16:20:13,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2364 states, 2341 states have (on average 4.390858607432721) internal successors, (10279), 2363 states have internal predecessors, (10279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:13,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2364 states to 2364 states and 10279 transitions. [2021-10-06 16:20:13,291 INFO L78 Accepts]: Start accepts. Automaton has 2364 states and 10279 transitions. Word has length 14 [2021-10-06 16:20:13,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:13,292 INFO L470 AbstractCegarLoop]: Abstraction has 2364 states and 10279 transitions. [2021-10-06 16:20:13,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:13,292 INFO L276 IsEmpty]: Start isEmpty. Operand 2364 states and 10279 transitions. [2021-10-06 16:20:13,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 16:20:13,294 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:13,294 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:20:13,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-10-06 16:20:13,494 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,SelfDestructingSolverStorable27 [2021-10-06 16:20:13,495 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:13,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:13,496 INFO L82 PathProgramCache]: Analyzing trace with hash -889297276, now seen corresponding path program 2 times [2021-10-06 16:20:13,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:13,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883476436] [2021-10-06 16:20:13,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:13,498 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:13,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:13,539 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-06 16:20:13,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:13,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883476436] [2021-10-06 16:20:13,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883476436] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:13,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970992340] [2021-10-06 16:20:13,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:20:13,540 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:13,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:13,541 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) [2021-10-06 16:20:13,559 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 [2021-10-06 16:20:13,647 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 16:20:13,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:20:13,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 16:20:13,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:13,712 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 16:20:13,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970992340] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:20:13,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 16:20:13,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-06 16:20:13,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238672024] [2021-10-06 16:20:13,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 16:20:13,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:13,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 16:20:13,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-06 16:20:13,715 INFO L87 Difference]: Start difference. First operand 2364 states and 10279 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 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) [2021-10-06 16:20:13,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:13,735 INFO L93 Difference]: Finished difference Result 2020 states and 8628 transitions. [2021-10-06 16:20:13,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 16:20:13,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 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 14 [2021-10-06 16:20:13,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:13,743 INFO L225 Difference]: With dead ends: 2020 [2021-10-06 16:20:13,743 INFO L226 Difference]: Without dead ends: 1624 [2021-10-06 16:20:13,744 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.9ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-06 16:20:13,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1624 states. [2021-10-06 16:20:13,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1624 to 1032. [2021-10-06 16:20:13,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1032 states, 1017 states have (on average 3.9410029498525074) internal successors, (4008), 1031 states have internal predecessors, (4008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:13,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 4008 transitions. [2021-10-06 16:20:13,770 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 4008 transitions. Word has length 14 [2021-10-06 16:20:13,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:13,770 INFO L470 AbstractCegarLoop]: Abstraction has 1032 states and 4008 transitions. [2021-10-06 16:20:13,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 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) [2021-10-06 16:20:13,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 4008 transitions. [2021-10-06 16:20:13,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 16:20:13,772 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:13,772 INFO L512 BasicCegarLoop]: trace histogram [12, 1, 1, 1] [2021-10-06 16:20:13,798 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-10-06 16:20:13,977 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,SelfDestructingSolverStorable28 [2021-10-06 16:20:13,978 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:13,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:13,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1181058265, now seen corresponding path program 12 times [2021-10-06 16:20:13,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:13,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274493037] [2021-10-06 16:20:13,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:13,980 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:13,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:14,102 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:14,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:14,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274493037] [2021-10-06 16:20:14,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274493037] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:14,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718650331] [2021-10-06 16:20:14,103 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 16:20:14,103 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:14,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:14,105 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) [2021-10-06 16:20:14,125 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 [2021-10-06 16:20:14,231 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-06 16:20:14,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:20:14,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 16:20:14,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:14,285 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:14,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718650331] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:14,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:20:14,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-10-06 16:20:14,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805561402] [2021-10-06 16:20:14,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 16:20:14,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:14,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 16:20:14,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-10-06 16:20:14,287 INFO L87 Difference]: Start difference. First operand 1032 states and 4008 transitions. Second operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:14,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:14,447 INFO L93 Difference]: Finished difference Result 2024 states and 7863 transitions. [2021-10-06 16:20:14,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-06 16:20:14,447 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 16:20:14,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:14,457 INFO L225 Difference]: With dead ends: 2024 [2021-10-06 16:20:14,457 INFO L226 Difference]: Without dead ends: 1764 [2021-10-06 16:20:14,458 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 81.7ms TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-10-06 16:20:14,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2021-10-06 16:20:14,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1092. [2021-10-06 16:20:14,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1092 states, 1077 states have (on average 3.9368616527390903) internal successors, (4240), 1091 states have internal predecessors, (4240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:14,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1092 states to 1092 states and 4240 transitions. [2021-10-06 16:20:14,500 INFO L78 Accepts]: Start accepts. Automaton has 1092 states and 4240 transitions. Word has length 15 [2021-10-06 16:20:14,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:14,500 INFO L470 AbstractCegarLoop]: Abstraction has 1092 states and 4240 transitions. [2021-10-06 16:20:14,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:14,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1092 states and 4240 transitions. [2021-10-06 16:20:14,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 16:20:14,503 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:14,503 INFO L512 BasicCegarLoop]: trace histogram [13, 1, 1, 1] [2021-10-06 16:20:14,544 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 [2021-10-06 16:20:14,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:14,717 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:14,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:14,718 INFO L82 PathProgramCache]: Analyzing trace with hash -2041898846, now seen corresponding path program 13 times [2021-10-06 16:20:14,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:14,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856495248] [2021-10-06 16:20:14,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:14,719 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:14,853 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:14,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:14,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856495248] [2021-10-06 16:20:14,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856495248] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:14,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294412414] [2021-10-06 16:20:14,855 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 16:20:14,855 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:14,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:14,856 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) [2021-10-06 16:20:14,857 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 [2021-10-06 16:20:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:14,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-06 16:20:14,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:15,039 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:15,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294412414] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:15,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:20:15,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-10-06 16:20:15,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333995182] [2021-10-06 16:20:15,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-06 16:20:15,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:15,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-06 16:20:15,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-10-06 16:20:15,042 INFO L87 Difference]: Start difference. First operand 1092 states and 4240 transitions. Second operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:15,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:15,209 INFO L93 Difference]: Finished difference Result 2160 states and 8396 transitions. [2021-10-06 16:20:15,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 16:20:15,210 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 16:20:15,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:15,218 INFO L225 Difference]: With dead ends: 2160 [2021-10-06 16:20:15,218 INFO L226 Difference]: Without dead ends: 1880 [2021-10-06 16:20:15,225 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 89.9ms TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-10-06 16:20:15,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2021-10-06 16:20:15,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1152. [2021-10-06 16:20:15,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1152 states, 1137 states have (on average 3.9331574318381706) internal successors, (4472), 1151 states have internal predecessors, (4472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:15,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 4472 transitions. [2021-10-06 16:20:15,263 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 4472 transitions. Word has length 16 [2021-10-06 16:20:15,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:15,266 INFO L470 AbstractCegarLoop]: Abstraction has 1152 states and 4472 transitions. [2021-10-06 16:20:15,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:15,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 4472 transitions. [2021-10-06 16:20:15,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 16:20:15,269 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:15,269 INFO L512 BasicCegarLoop]: trace histogram [14, 1, 1, 1] [2021-10-06 16:20:15,308 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 [2021-10-06 16:20:15,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-10-06 16:20:15,483 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:15,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:15,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1125645817, now seen corresponding path program 14 times [2021-10-06 16:20:15,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:15,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438662402] [2021-10-06 16:20:15,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:15,485 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:15,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:15,629 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:15,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:15,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438662402] [2021-10-06 16:20:15,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438662402] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:15,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121061411] [2021-10-06 16:20:15,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:20:15,631 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:15,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:15,633 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) [2021-10-06 16:20:15,640 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 [2021-10-06 16:20:15,763 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:20:15,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:20:15,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 16:20:15,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:15,828 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:15,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121061411] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:15,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:20:15,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-10-06 16:20:15,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191254511] [2021-10-06 16:20:15,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 16:20:15,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:15,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 16:20:15,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-10-06 16:20:15,831 INFO L87 Difference]: Start difference. First operand 1152 states and 4472 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 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) [2021-10-06 16:20:16,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:16,026 INFO L93 Difference]: Finished difference Result 2296 states and 8929 transitions. [2021-10-06 16:20:16,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-06 16:20:16,026 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 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 17 [2021-10-06 16:20:16,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:16,061 INFO L225 Difference]: With dead ends: 2296 [2021-10-06 16:20:16,061 INFO L226 Difference]: Without dead ends: 1996 [2021-10-06 16:20:16,061 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 97.5ms TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-10-06 16:20:16,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1996 states. [2021-10-06 16:20:16,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1996 to 1212. [2021-10-06 16:20:16,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 1197 states have (on average 3.9298245614035086) internal successors, (4704), 1211 states have internal predecessors, (4704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:16,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 4704 transitions. [2021-10-06 16:20:16,104 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 4704 transitions. Word has length 17 [2021-10-06 16:20:16,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:16,105 INFO L470 AbstractCegarLoop]: Abstraction has 1212 states and 4704 transitions. [2021-10-06 16:20:16,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 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) [2021-10-06 16:20:16,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 4704 transitions. [2021-10-06 16:20:16,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 16:20:16,108 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:16,108 INFO L512 BasicCegarLoop]: trace histogram [15, 1, 1, 1] [2021-10-06 16:20:16,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-10-06 16:20:16,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:16,322 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:16,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:16,323 INFO L82 PathProgramCache]: Analyzing trace with hash 535282562, now seen corresponding path program 15 times [2021-10-06 16:20:16,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:16,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18241051] [2021-10-06 16:20:16,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:16,324 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:16,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:16,477 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:16,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:16,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18241051] [2021-10-06 16:20:16,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18241051] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:16,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523694268] [2021-10-06 16:20:16,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:20:16,478 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:16,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:16,480 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) [2021-10-06 16:20:16,486 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 [2021-10-06 16:20:16,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-10-06 16:20:16,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:20:16,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 16:20:16,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:16,683 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:16,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523694268] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:16,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:20:16,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-10-06 16:20:16,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560325830] [2021-10-06 16:20:16,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 16:20:16,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:16,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 16:20:16,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-10-06 16:20:16,685 INFO L87 Difference]: Start difference. First operand 1212 states and 4704 transitions. Second operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:16,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:16,868 INFO L93 Difference]: Finished difference Result 2432 states and 9462 transitions. [2021-10-06 16:20:16,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-06 16:20:16,874 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 16:20:16,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:16,883 INFO L225 Difference]: With dead ends: 2432 [2021-10-06 16:20:16,884 INFO L226 Difference]: Without dead ends: 2112 [2021-10-06 16:20:16,884 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 106.5ms TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-10-06 16:20:16,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2112 states. [2021-10-06 16:20:16,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2112 to 1272. [2021-10-06 16:20:16,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1272 states, 1257 states have (on average 3.9268098647573586) internal successors, (4936), 1271 states have internal predecessors, (4936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:16,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 4936 transitions. [2021-10-06 16:20:16,931 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 4936 transitions. Word has length 18 [2021-10-06 16:20:16,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:16,931 INFO L470 AbstractCegarLoop]: Abstraction has 1272 states and 4936 transitions. [2021-10-06 16:20:16,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:16,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 4936 transitions. [2021-10-06 16:20:16,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 16:20:16,934 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:16,934 INFO L512 BasicCegarLoop]: trace histogram [16, 1, 1, 1] [2021-10-06 16:20:16,977 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 [2021-10-06 16:20:17,148 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,SelfDestructingSolverStorable32 [2021-10-06 16:20:17,149 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:17,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:17,149 INFO L82 PathProgramCache]: Analyzing trace with hash -586109159, now seen corresponding path program 16 times [2021-10-06 16:20:17,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:17,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130744160] [2021-10-06 16:20:17,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:17,151 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:17,322 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:17,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:17,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130744160] [2021-10-06 16:20:17,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130744160] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:17,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237375370] [2021-10-06 16:20:17,323 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 16:20:17,323 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:17,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:17,325 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) [2021-10-06 16:20:17,325 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 [2021-10-06 16:20:17,459 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 16:20:17,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:20:17,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 16:20:17,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:17,519 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:17,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237375370] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:17,519 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:20:17,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-10-06 16:20:17,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023312833] [2021-10-06 16:20:17,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 16:20:17,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:17,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 16:20:17,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-10-06 16:20:17,523 INFO L87 Difference]: Start difference. First operand 1272 states and 4936 transitions. Second operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:17,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:17,698 INFO L93 Difference]: Finished difference Result 2568 states and 9995 transitions. [2021-10-06 16:20:17,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-06 16:20:17,704 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-06 16:20:17,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:17,711 INFO L225 Difference]: With dead ends: 2568 [2021-10-06 16:20:17,711 INFO L226 Difference]: Without dead ends: 2228 [2021-10-06 16:20:17,712 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 121.8ms TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-10-06 16:20:17,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2228 states. [2021-10-06 16:20:17,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2228 to 1332. [2021-10-06 16:20:17,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1332 states, 1317 states have (on average 3.924069855732726) internal successors, (5168), 1331 states have internal predecessors, (5168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:17,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1332 states to 1332 states and 5168 transitions. [2021-10-06 16:20:17,740 INFO L78 Accepts]: Start accepts. Automaton has 1332 states and 5168 transitions. Word has length 19 [2021-10-06 16:20:17,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:17,740 INFO L470 AbstractCegarLoop]: Abstraction has 1332 states and 5168 transitions. [2021-10-06 16:20:17,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:17,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1332 states and 5168 transitions. [2021-10-06 16:20:17,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 16:20:17,746 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:17,746 INFO L512 BasicCegarLoop]: trace histogram [17, 1, 1, 1] [2021-10-06 16:20:17,785 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 [2021-10-06 16:20:17,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:17,960 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:17,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:17,960 INFO L82 PathProgramCache]: Analyzing trace with hash -989514142, now seen corresponding path program 17 times [2021-10-06 16:20:17,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:17,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821313231] [2021-10-06 16:20:17,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:17,961 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:17,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:18,161 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:18,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:18,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821313231] [2021-10-06 16:20:18,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821313231] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:18,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855829985] [2021-10-06 16:20:18,162 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 16:20:18,162 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:18,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:18,163 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:20:18,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-06 16:20:18,309 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-10-06 16:20:18,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:20:18,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 16:20:18,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:18,383 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:18,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855829985] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:18,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:20:18,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-10-06 16:20:18,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102708773] [2021-10-06 16:20:18,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 16:20:18,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:18,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 16:20:18,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-10-06 16:20:18,393 INFO L87 Difference]: Start difference. First operand 1332 states and 5168 transitions. Second operand has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:18,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:18,613 INFO L93 Difference]: Finished difference Result 2704 states and 10528 transitions. [2021-10-06 16:20:18,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-06 16:20:18,613 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 16:20:18,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:18,622 INFO L225 Difference]: With dead ends: 2704 [2021-10-06 16:20:18,623 INFO L226 Difference]: Without dead ends: 2344 [2021-10-06 16:20:18,623 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 136.4ms TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-10-06 16:20:18,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2344 states. [2021-10-06 16:20:18,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2344 to 1392. [2021-10-06 16:20:18,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1377 states have (on average 3.9215686274509802) internal successors, (5400), 1391 states have internal predecessors, (5400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:18,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 5400 transitions. [2021-10-06 16:20:18,659 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 5400 transitions. Word has length 20 [2021-10-06 16:20:18,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:18,659 INFO L470 AbstractCegarLoop]: Abstraction has 1392 states and 5400 transitions. [2021-10-06 16:20:18,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:18,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 5400 transitions. [2021-10-06 16:20:18,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-06 16:20:18,662 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:18,662 INFO L512 BasicCegarLoop]: trace histogram [18, 1, 1, 1] [2021-10-06 16:20:18,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-10-06 16:20:18,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-10-06 16:20:18,876 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:18,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:18,877 INFO L82 PathProgramCache]: Analyzing trace with hash -610166727, now seen corresponding path program 18 times [2021-10-06 16:20:18,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:18,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845062824] [2021-10-06 16:20:18,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:18,879 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:18,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:19,101 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:19,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:19,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845062824] [2021-10-06 16:20:19,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845062824] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:19,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781344246] [2021-10-06 16:20:19,102 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 16:20:19,103 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:19,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:19,104 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:20:19,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-06 16:20:19,284 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-10-06 16:20:19,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:20:19,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-06 16:20:19,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:19,359 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:19,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781344246] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:19,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:20:19,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-10-06 16:20:19,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062074559] [2021-10-06 16:20:19,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 16:20:19,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:19,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 16:20:19,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-10-06 16:20:19,361 INFO L87 Difference]: Start difference. First operand 1392 states and 5400 transitions. Second operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 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) [2021-10-06 16:20:19,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:19,606 INFO L93 Difference]: Finished difference Result 2840 states and 11061 transitions. [2021-10-06 16:20:19,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-06 16:20:19,607 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 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 21 [2021-10-06 16:20:19,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:19,617 INFO L225 Difference]: With dead ends: 2840 [2021-10-06 16:20:19,618 INFO L226 Difference]: Without dead ends: 2460 [2021-10-06 16:20:19,618 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 160.3ms TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-10-06 16:20:19,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2460 states. [2021-10-06 16:20:19,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2460 to 1452. [2021-10-06 16:20:19,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1437 states have (on average 3.919276270006959) internal successors, (5632), 1451 states have internal predecessors, (5632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:19,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 5632 transitions. [2021-10-06 16:20:19,669 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 5632 transitions. Word has length 21 [2021-10-06 16:20:19,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:19,669 INFO L470 AbstractCegarLoop]: Abstraction has 1452 states and 5632 transitions. [2021-10-06 16:20:19,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 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) [2021-10-06 16:20:19,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 5632 transitions. [2021-10-06 16:20:19,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 16:20:19,672 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:19,672 INFO L512 BasicCegarLoop]: trace histogram [19, 1, 1, 1] [2021-10-06 16:20:19,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-06 16:20:19,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-10-06 16:20:19,888 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:19,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:19,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1735298750, now seen corresponding path program 19 times [2021-10-06 16:20:19,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:19,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53895861] [2021-10-06 16:20:19,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:19,889 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:20,102 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:20,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:20,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53895861] [2021-10-06 16:20:20,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53895861] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:20,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511274667] [2021-10-06 16:20:20,103 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 16:20:20,103 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:20,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:20,104 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:20:20,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-06 16:20:20,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:20,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-06 16:20:20,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:20,341 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:20,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511274667] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:20,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:20:20,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-10-06 16:20:20,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210848358] [2021-10-06 16:20:20,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-06 16:20:20,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:20,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-06 16:20:20,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-10-06 16:20:20,344 INFO L87 Difference]: Start difference. First operand 1452 states and 5632 transitions. Second operand has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:20,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:20,573 INFO L93 Difference]: Finished difference Result 2976 states and 11594 transitions. [2021-10-06 16:20:20,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-06 16:20:20,573 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 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 22 [2021-10-06 16:20:20,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:20,581 INFO L225 Difference]: With dead ends: 2976 [2021-10-06 16:20:20,581 INFO L226 Difference]: Without dead ends: 2576 [2021-10-06 16:20:20,582 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 155.8ms TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-10-06 16:20:20,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2576 states. [2021-10-06 16:20:20,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2576 to 1512. [2021-10-06 16:20:20,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1497 states have (on average 3.917167668670675) internal successors, (5864), 1511 states have internal predecessors, (5864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:20,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 5864 transitions. [2021-10-06 16:20:20,618 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 5864 transitions. Word has length 22 [2021-10-06 16:20:20,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:20,618 INFO L470 AbstractCegarLoop]: Abstraction has 1512 states and 5864 transitions. [2021-10-06 16:20:20,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:20,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 5864 transitions. [2021-10-06 16:20:20,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-06 16:20:20,622 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:20,622 INFO L512 BasicCegarLoop]: trace histogram [20, 1, 1, 1] [2021-10-06 16:20:20,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-10-06 16:20:20,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-10-06 16:20:20,833 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:20,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:20,833 INFO L82 PathProgramCache]: Analyzing trace with hash 2040314201, now seen corresponding path program 20 times [2021-10-06 16:20:20,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:20,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581171180] [2021-10-06 16:20:20,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:20,834 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:20,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:21,104 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:21,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:21,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581171180] [2021-10-06 16:20:21,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581171180] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:21,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89883578] [2021-10-06 16:20:21,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:20:21,105 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:21,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:21,106 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:20:21,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-06 16:20:21,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:20:21,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:20:21,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-06 16:20:21,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:21,346 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:21,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89883578] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:21,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:20:21,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-10-06 16:20:21,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773887477] [2021-10-06 16:20:21,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-06 16:20:21,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:21,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-06 16:20:21,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-10-06 16:20:21,351 INFO L87 Difference]: Start difference. First operand 1512 states and 5864 transitions. Second operand has 24 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 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) [2021-10-06 16:20:21,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:21,607 INFO L93 Difference]: Finished difference Result 3112 states and 12127 transitions. [2021-10-06 16:20:21,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-06 16:20:21,608 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 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 23 [2021-10-06 16:20:21,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:21,615 INFO L225 Difference]: With dead ends: 3112 [2021-10-06 16:20:21,616 INFO L226 Difference]: Without dead ends: 2692 [2021-10-06 16:20:21,616 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 189.3ms TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-10-06 16:20:21,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2692 states. [2021-10-06 16:20:21,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2692 to 1572. [2021-10-06 16:20:21,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1572 states, 1557 states have (on average 3.9152215799614645) internal successors, (6096), 1571 states have internal predecessors, (6096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:21,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 6096 transitions. [2021-10-06 16:20:21,653 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 6096 transitions. Word has length 23 [2021-10-06 16:20:21,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:21,653 INFO L470 AbstractCegarLoop]: Abstraction has 1572 states and 6096 transitions. [2021-10-06 16:20:21,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 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) [2021-10-06 16:20:21,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 6096 transitions. [2021-10-06 16:20:21,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 16:20:21,655 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:21,656 INFO L512 BasicCegarLoop]: trace histogram [21, 1, 1, 1] [2021-10-06 16:20:21,689 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-10-06 16:20:21,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-10-06 16:20:21,871 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:21,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:21,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1174768606, now seen corresponding path program 21 times [2021-10-06 16:20:21,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:21,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857257499] [2021-10-06 16:20:21,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:21,872 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:21,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:22,124 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:22,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:22,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857257499] [2021-10-06 16:20:22,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857257499] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:22,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456467910] [2021-10-06 16:20:22,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:20:22,125 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:22,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:22,126 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:20:22,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-10-06 16:20:22,312 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-10-06 16:20:22,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:20:22,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 16:20:22,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:22,421 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:22,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456467910] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:22,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:20:22,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-10-06 16:20:22,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894715288] [2021-10-06 16:20:22,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 16:20:22,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:22,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 16:20:22,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-10-06 16:20:22,424 INFO L87 Difference]: Start difference. First operand 1572 states and 6096 transitions. Second operand has 25 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:22,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:22,768 INFO L93 Difference]: Finished difference Result 3248 states and 12660 transitions. [2021-10-06 16:20:22,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-06 16:20:22,769 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 16:20:22,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:22,778 INFO L225 Difference]: With dead ends: 3248 [2021-10-06 16:20:22,779 INFO L226 Difference]: Without dead ends: 2808 [2021-10-06 16:20:22,779 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 194.5ms TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-10-06 16:20:22,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2808 states. [2021-10-06 16:20:22,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2808 to 1632. [2021-10-06 16:20:22,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1632 states, 1617 states have (on average 3.9134199134199132) internal successors, (6328), 1631 states have internal predecessors, (6328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:22,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 6328 transitions. [2021-10-06 16:20:22,847 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 6328 transitions. Word has length 24 [2021-10-06 16:20:22,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:22,848 INFO L470 AbstractCegarLoop]: Abstraction has 1632 states and 6328 transitions. [2021-10-06 16:20:22,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:22,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 6328 transitions. [2021-10-06 16:20:22,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-06 16:20:22,854 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:22,854 INFO L512 BasicCegarLoop]: trace histogram [22, 1, 1, 1] [2021-10-06 16:20:22,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-10-06 16:20:23,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-10-06 16:20:23,055 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:23,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:23,056 INFO L82 PathProgramCache]: Analyzing trace with hash -2058087815, now seen corresponding path program 22 times [2021-10-06 16:20:23,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:23,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109924266] [2021-10-06 16:20:23,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:23,057 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:23,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:23,337 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:23,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:23,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109924266] [2021-10-06 16:20:23,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109924266] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:23,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313930036] [2021-10-06 16:20:23,338 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 16:20:23,338 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:23,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:23,343 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:20:23,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-10-06 16:20:23,517 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 16:20:23,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:20:23,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-06 16:20:23,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:23,630 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:23,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313930036] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:23,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:20:23,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-10-06 16:20:23,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442202240] [2021-10-06 16:20:23,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-06 16:20:23,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:23,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-06 16:20:23,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-10-06 16:20:23,633 INFO L87 Difference]: Start difference. First operand 1632 states and 6328 transitions. Second operand has 26 states, 25 states have (on average 1.12) internal successors, (28), 25 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) [2021-10-06 16:20:23,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:23,954 INFO L93 Difference]: Finished difference Result 3384 states and 13193 transitions. [2021-10-06 16:20:23,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-06 16:20:23,955 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.12) internal successors, (28), 25 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 25 [2021-10-06 16:20:23,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:23,963 INFO L225 Difference]: With dead ends: 3384 [2021-10-06 16:20:23,964 INFO L226 Difference]: Without dead ends: 2924 [2021-10-06 16:20:23,964 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 212.7ms TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-10-06 16:20:23,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2021-10-06 16:20:23,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 1692. [2021-10-06 16:20:23,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1692 states, 1677 states have (on average 3.911747167561121) internal successors, (6560), 1691 states have internal predecessors, (6560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:24,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1692 states to 1692 states and 6560 transitions. [2021-10-06 16:20:24,003 INFO L78 Accepts]: Start accepts. Automaton has 1692 states and 6560 transitions. Word has length 25 [2021-10-06 16:20:24,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:24,004 INFO L470 AbstractCegarLoop]: Abstraction has 1692 states and 6560 transitions. [2021-10-06 16:20:24,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.12) internal successors, (28), 25 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) [2021-10-06 16:20:24,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1692 states and 6560 transitions. [2021-10-06 16:20:24,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-06 16:20:24,006 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:24,006 INFO L512 BasicCegarLoop]: trace histogram [23, 1, 1, 1] [2021-10-06 16:20:24,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-10-06 16:20:24,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-10-06 16:20:24,207 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:24,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:24,208 INFO L82 PathProgramCache]: Analyzing trace with hash 623787778, now seen corresponding path program 23 times [2021-10-06 16:20:24,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:24,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191989273] [2021-10-06 16:20:24,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:24,209 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:24,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:24,507 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:24,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:24,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191989273] [2021-10-06 16:20:24,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191989273] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:24,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508705207] [2021-10-06 16:20:24,508 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 16:20:24,508 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:24,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:24,509 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:20:24,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-10-06 16:20:24,702 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-10-06 16:20:24,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:20:24,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-06 16:20:24,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:24,783 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:24,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508705207] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:24,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:20:24,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-10-06 16:20:24,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793387645] [2021-10-06 16:20:24,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-06 16:20:24,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:24,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-06 16:20:24,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-10-06 16:20:24,786 INFO L87 Difference]: Start difference. First operand 1692 states and 6560 transitions. Second operand has 27 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:25,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:25,095 INFO L93 Difference]: Finished difference Result 3520 states and 13726 transitions. [2021-10-06 16:20:25,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-06 16:20:25,096 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-06 16:20:25,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:25,107 INFO L225 Difference]: With dead ends: 3520 [2021-10-06 16:20:25,107 INFO L226 Difference]: Without dead ends: 3040 [2021-10-06 16:20:25,108 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 230.3ms TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-10-06 16:20:25,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3040 states. [2021-10-06 16:20:25,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3040 to 1752. [2021-10-06 16:20:25,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1752 states, 1737 states have (on average 3.9101899827288427) internal successors, (6792), 1751 states have internal predecessors, (6792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:25,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1752 states to 1752 states and 6792 transitions. [2021-10-06 16:20:25,157 INFO L78 Accepts]: Start accepts. Automaton has 1752 states and 6792 transitions. Word has length 26 [2021-10-06 16:20:25,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:25,157 INFO L470 AbstractCegarLoop]: Abstraction has 1752 states and 6792 transitions. [2021-10-06 16:20:25,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:25,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1752 states and 6792 transitions. [2021-10-06 16:20:25,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-06 16:20:25,161 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:25,161 INFO L512 BasicCegarLoop]: trace histogram [24, 1, 1, 1] [2021-10-06 16:20:25,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2021-10-06 16:20:25,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:25,372 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:25,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:25,372 INFO L82 PathProgramCache]: Analyzing trace with hash -2137414759, now seen corresponding path program 24 times [2021-10-06 16:20:25,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:25,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856928075] [2021-10-06 16:20:25,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:25,374 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:25,688 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:25,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:25,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856928075] [2021-10-06 16:20:25,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856928075] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:25,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288006436] [2021-10-06 16:20:25,689 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 16:20:25,689 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:25,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:25,691 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:20:25,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-10-06 16:20:25,895 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-10-06 16:20:25,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:20:25,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-06 16:20:25,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:25,986 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:25,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288006436] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:25,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:20:25,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2021-10-06 16:20:25,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519592101] [2021-10-06 16:20:25,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-06 16:20:25,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:25,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-06 16:20:25,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-10-06 16:20:25,988 INFO L87 Difference]: Start difference. First operand 1752 states and 6792 transitions. Second operand has 28 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:26,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:26,329 INFO L93 Difference]: Finished difference Result 3656 states and 14259 transitions. [2021-10-06 16:20:26,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-06 16:20:26,331 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-06 16:20:26,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:26,344 INFO L225 Difference]: With dead ends: 3656 [2021-10-06 16:20:26,344 INFO L226 Difference]: Without dead ends: 3156 [2021-10-06 16:20:26,345 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 249.9ms TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-10-06 16:20:26,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3156 states. [2021-10-06 16:20:26,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3156 to 1812. [2021-10-06 16:20:26,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1812 states, 1797 states have (on average 3.9087367835281026) internal successors, (7024), 1811 states have internal predecessors, (7024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:26,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1812 states to 1812 states and 7024 transitions. [2021-10-06 16:20:26,403 INFO L78 Accepts]: Start accepts. Automaton has 1812 states and 7024 transitions. Word has length 27 [2021-10-06 16:20:26,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:26,403 INFO L470 AbstractCegarLoop]: Abstraction has 1812 states and 7024 transitions. [2021-10-06 16:20:26,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:26,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1812 states and 7024 transitions. [2021-10-06 16:20:26,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 16:20:26,407 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:26,407 INFO L512 BasicCegarLoop]: trace histogram [25, 1, 1, 1] [2021-10-06 16:20:26,433 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2021-10-06 16:20:26,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-10-06 16:20:26,608 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:26,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:26,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1835347486, now seen corresponding path program 25 times [2021-10-06 16:20:26,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:26,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436739033] [2021-10-06 16:20:26,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:26,610 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:26,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:27,000 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:27,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:27,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436739033] [2021-10-06 16:20:27,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436739033] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:27,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897703733] [2021-10-06 16:20:27,001 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 16:20:27,001 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:27,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:27,002 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:20:27,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-06 16:20:27,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:27,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-06 16:20:27,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:27,314 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:27,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897703733] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:27,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:20:27,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-10-06 16:20:27,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646301811] [2021-10-06 16:20:27,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-06 16:20:27,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:27,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-06 16:20:27,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2021-10-06 16:20:27,317 INFO L87 Difference]: Start difference. First operand 1812 states and 7024 transitions. Second operand has 29 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:27,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:27,726 INFO L93 Difference]: Finished difference Result 3792 states and 14792 transitions. [2021-10-06 16:20:27,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-06 16:20:27,726 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-06 16:20:27,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:27,738 INFO L225 Difference]: With dead ends: 3792 [2021-10-06 16:20:27,739 INFO L226 Difference]: Without dead ends: 3272 [2021-10-06 16:20:27,739 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 306.6ms TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2021-10-06 16:20:27,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3272 states. [2021-10-06 16:20:27,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3272 to 1872. [2021-10-06 16:20:27,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1872 states, 1857 states have (on average 3.907377490576198) internal successors, (7256), 1871 states have internal predecessors, (7256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:27,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1872 states to 1872 states and 7256 transitions. [2021-10-06 16:20:27,797 INFO L78 Accepts]: Start accepts. Automaton has 1872 states and 7256 transitions. Word has length 28 [2021-10-06 16:20:27,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:27,797 INFO L470 AbstractCegarLoop]: Abstraction has 1872 states and 7256 transitions. [2021-10-06 16:20:27,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:27,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1872 states and 7256 transitions. [2021-10-06 16:20:27,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 16:20:27,802 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:27,802 INFO L512 BasicCegarLoop]: trace histogram [26, 1, 1, 1] [2021-10-06 16:20:27,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-10-06 16:20:28,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:28,006 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:28,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:28,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1061196615, now seen corresponding path program 26 times [2021-10-06 16:20:28,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:28,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687332708] [2021-10-06 16:20:28,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:28,007 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:28,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:28,437 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:28,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:28,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687332708] [2021-10-06 16:20:28,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687332708] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:28,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243220659] [2021-10-06 16:20:28,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:20:28,438 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:28,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:28,440 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:20:28,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-10-06 16:20:28,653 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:20:28,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:20:28,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-06 16:20:28,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:28,745 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:28,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243220659] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:28,745 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:20:28,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2021-10-06 16:20:28,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295327091] [2021-10-06 16:20:28,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-06 16:20:28,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:28,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-06 16:20:28,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-10-06 16:20:28,747 INFO L87 Difference]: Start difference. First operand 1872 states and 7256 transitions. Second operand has 30 states, 29 states have (on average 1.103448275862069) internal successors, (32), 29 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:29,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:29,113 INFO L93 Difference]: Finished difference Result 3928 states and 15325 transitions. [2021-10-06 16:20:29,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-06 16:20:29,114 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.103448275862069) internal successors, (32), 29 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-06 16:20:29,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:29,127 INFO L225 Difference]: With dead ends: 3928 [2021-10-06 16:20:29,127 INFO L226 Difference]: Without dead ends: 3388 [2021-10-06 16:20:29,128 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 319.4ms TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-10-06 16:20:29,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3388 states. [2021-10-06 16:20:29,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3388 to 1932. [2021-10-06 16:20:29,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1932 states, 1917 states have (on average 3.9061032863849765) internal successors, (7488), 1931 states have internal predecessors, (7488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:29,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 7488 transitions. [2021-10-06 16:20:29,190 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 7488 transitions. Word has length 29 [2021-10-06 16:20:29,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:29,191 INFO L470 AbstractCegarLoop]: Abstraction has 1932 states and 7488 transitions. [2021-10-06 16:20:29,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.103448275862069) internal successors, (32), 29 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:29,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 7488 transitions. [2021-10-06 16:20:29,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-06 16:20:29,195 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:29,195 INFO L512 BasicCegarLoop]: trace histogram [27, 1, 1, 1] [2021-10-06 16:20:29,221 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2021-10-06 16:20:29,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-10-06 16:20:29,396 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:29,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:29,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1462643906, now seen corresponding path program 27 times [2021-10-06 16:20:29,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:29,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160391731] [2021-10-06 16:20:29,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:29,398 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:29,851 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:29,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:29,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160391731] [2021-10-06 16:20:29,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160391731] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:29,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335028260] [2021-10-06 16:20:29,852 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:20:29,853 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:29,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:29,855 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:20:29,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-10-06 16:20:30,100 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-10-06 16:20:30,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:20:30,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-06 16:20:30,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:30,222 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:30,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335028260] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:30,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:20:30,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-10-06 16:20:30,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928330478] [2021-10-06 16:20:30,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-06 16:20:30,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:30,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-06 16:20:30,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-10-06 16:20:30,226 INFO L87 Difference]: Start difference. First operand 1932 states and 7488 transitions. Second operand has 31 states, 30 states have (on average 1.1) internal successors, (33), 30 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:30,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:30,712 INFO L93 Difference]: Finished difference Result 4064 states and 15858 transitions. [2021-10-06 16:20:30,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-06 16:20:30,713 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.1) internal successors, (33), 30 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-06 16:20:30,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:30,734 INFO L225 Difference]: With dead ends: 4064 [2021-10-06 16:20:30,734 INFO L226 Difference]: Without dead ends: 3504 [2021-10-06 16:20:30,735 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 351.8ms TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-10-06 16:20:30,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3504 states. [2021-10-06 16:20:30,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3504 to 1992. [2021-10-06 16:20:30,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1992 states, 1977 states have (on average 3.904906423874557) internal successors, (7720), 1991 states have internal predecessors, (7720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:30,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1992 states to 1992 states and 7720 transitions. [2021-10-06 16:20:30,818 INFO L78 Accepts]: Start accepts. Automaton has 1992 states and 7720 transitions. Word has length 30 [2021-10-06 16:20:30,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:30,819 INFO L470 AbstractCegarLoop]: Abstraction has 1992 states and 7720 transitions. [2021-10-06 16:20:30,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.1) internal successors, (33), 30 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:30,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1992 states and 7720 transitions. [2021-10-06 16:20:30,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-06 16:20:30,824 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:30,825 INFO L512 BasicCegarLoop]: trace histogram [28, 1, 1, 1] [2021-10-06 16:20:30,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2021-10-06 16:20:31,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:31,026 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:31,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:31,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1902678567, now seen corresponding path program 28 times [2021-10-06 16:20:31,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:31,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531218309] [2021-10-06 16:20:31,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:31,028 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:31,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:31,531 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:31,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:31,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531218309] [2021-10-06 16:20:31,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531218309] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:31,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837761683] [2021-10-06 16:20:31,532 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 16:20:31,532 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:31,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:31,539 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:20:31,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-10-06 16:20:31,757 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 16:20:31,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:20:31,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-06 16:20:31,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:31,862 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:31,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837761683] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:31,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:20:31,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-10-06 16:20:31,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266331248] [2021-10-06 16:20:31,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-06 16:20:31,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:31,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-06 16:20:31,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-10-06 16:20:31,865 INFO L87 Difference]: Start difference. First operand 1992 states and 7720 transitions. Second operand has 32 states, 31 states have (on average 1.096774193548387) internal successors, (34), 31 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:32,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:32,433 INFO L93 Difference]: Finished difference Result 4200 states and 16391 transitions. [2021-10-06 16:20:32,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-06 16:20:32,434 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.096774193548387) internal successors, (34), 31 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-06 16:20:32,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:32,465 INFO L225 Difference]: With dead ends: 4200 [2021-10-06 16:20:32,465 INFO L226 Difference]: Without dead ends: 3620 [2021-10-06 16:20:32,466 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 375.8ms TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-10-06 16:20:32,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3620 states. [2021-10-06 16:20:32,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3620 to 2052. [2021-10-06 16:20:32,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2052 states, 2037 states have (on average 3.9037800687285222) internal successors, (7952), 2051 states have internal predecessors, (7952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:32,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 7952 transitions. [2021-10-06 16:20:32,572 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 7952 transitions. Word has length 31 [2021-10-06 16:20:32,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:32,572 INFO L470 AbstractCegarLoop]: Abstraction has 2052 states and 7952 transitions. [2021-10-06 16:20:32,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.096774193548387) internal successors, (34), 31 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:32,573 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 7952 transitions. [2021-10-06 16:20:32,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-06 16:20:32,578 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:32,579 INFO L512 BasicCegarLoop]: trace histogram [29, 1, 1, 1] [2021-10-06 16:20:32,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-10-06 16:20:32,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-10-06 16:20:32,793 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:32,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:32,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1146507170, now seen corresponding path program 29 times [2021-10-06 16:20:32,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:32,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044250126] [2021-10-06 16:20:32,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:32,795 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:32,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:33,266 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:33,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:33,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044250126] [2021-10-06 16:20:33,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044250126] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:33,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089082724] [2021-10-06 16:20:33,267 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 16:20:33,267 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:33,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:33,269 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:20:33,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-10-06 16:20:33,503 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-10-06 16:20:33,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:20:33,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-06 16:20:33,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:33,611 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:33,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089082724] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:33,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:20:33,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-10-06 16:20:33,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24567514] [2021-10-06 16:20:33,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-10-06 16:20:33,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:33,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-10-06 16:20:33,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2021-10-06 16:20:33,614 INFO L87 Difference]: Start difference. First operand 2052 states and 7952 transitions. Second operand has 33 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:34,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:34,073 INFO L93 Difference]: Finished difference Result 4336 states and 16924 transitions. [2021-10-06 16:20:34,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-06 16:20:34,079 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-06 16:20:34,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:34,096 INFO L225 Difference]: With dead ends: 4336 [2021-10-06 16:20:34,096 INFO L226 Difference]: Without dead ends: 3736 [2021-10-06 16:20:34,097 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 380.6ms TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2021-10-06 16:20:34,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3736 states. [2021-10-06 16:20:34,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3736 to 2112. [2021-10-06 16:20:34,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2112 states, 2097 states have (on average 3.9027181688125894) internal successors, (8184), 2111 states have internal predecessors, (8184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:34,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 8184 transitions. [2021-10-06 16:20:34,149 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 8184 transitions. Word has length 32 [2021-10-06 16:20:34,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:34,149 INFO L470 AbstractCegarLoop]: Abstraction has 2112 states and 8184 transitions. [2021-10-06 16:20:34,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:34,149 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 8184 transitions. [2021-10-06 16:20:34,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-06 16:20:34,152 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:34,153 INFO L512 BasicCegarLoop]: trace histogram [30, 1, 1, 1] [2021-10-06 16:20:34,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2021-10-06 16:20:34,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:34,354 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:34,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:34,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1181984505, now seen corresponding path program 30 times [2021-10-06 16:20:34,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:34,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712693486] [2021-10-06 16:20:34,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:34,356 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:34,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:34,853 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:34,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:34,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712693486] [2021-10-06 16:20:34,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712693486] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:34,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859272080] [2021-10-06 16:20:34,854 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 16:20:34,854 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:34,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:34,856 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:20:34,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-10-06 16:20:35,127 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-10-06 16:20:35,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:20:35,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-06 16:20:35,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:35,235 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:35,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859272080] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:35,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:20:35,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-10-06 16:20:35,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373299610] [2021-10-06 16:20:35,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-10-06 16:20:35,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:35,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-10-06 16:20:35,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-10-06 16:20:35,238 INFO L87 Difference]: Start difference. First operand 2112 states and 8184 transitions. Second operand has 34 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 33 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:35,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:35,696 INFO L93 Difference]: Finished difference Result 4472 states and 17457 transitions. [2021-10-06 16:20:35,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-06 16:20:35,697 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 33 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-06 16:20:35,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:35,713 INFO L225 Difference]: With dead ends: 4472 [2021-10-06 16:20:35,714 INFO L226 Difference]: Without dead ends: 3852 [2021-10-06 16:20:35,714 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 403.6ms TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-10-06 16:20:35,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3852 states. [2021-10-06 16:20:35,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3852 to 2172. [2021-10-06 16:20:35,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2172 states, 2157 states have (on average 3.9017153453871116) internal successors, (8416), 2171 states have internal predecessors, (8416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:35,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2172 states to 2172 states and 8416 transitions. [2021-10-06 16:20:35,814 INFO L78 Accepts]: Start accepts. Automaton has 2172 states and 8416 transitions. Word has length 33 [2021-10-06 16:20:35,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:35,814 INFO L470 AbstractCegarLoop]: Abstraction has 2172 states and 8416 transitions. [2021-10-06 16:20:35,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 33 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:35,814 INFO L276 IsEmpty]: Start isEmpty. Operand 2172 states and 8416 transitions. [2021-10-06 16:20:35,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-06 16:20:35,820 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:35,820 INFO L512 BasicCegarLoop]: trace histogram [31, 1, 1, 1] [2021-10-06 16:20:35,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-10-06 16:20:36,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:36,035 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:36,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:36,036 INFO L82 PathProgramCache]: Analyzing trace with hash -2013185406, now seen corresponding path program 31 times [2021-10-06 16:20:36,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:36,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937091554] [2021-10-06 16:20:36,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:36,037 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:36,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:36,573 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:36,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:36,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937091554] [2021-10-06 16:20:36,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937091554] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:36,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734890832] [2021-10-06 16:20:36,574 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 16:20:36,574 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:36,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:36,576 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:20:36,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-10-06 16:20:36,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:36,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-06 16:20:36,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:36,971 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:36,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734890832] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:36,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:20:36,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2021-10-06 16:20:36,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012857466] [2021-10-06 16:20:36,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-10-06 16:20:36,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:36,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-10-06 16:20:36,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 16:20:36,974 INFO L87 Difference]: Start difference. First operand 2172 states and 8416 transitions. Second operand has 35 states, 34 states have (on average 1.088235294117647) internal successors, (37), 34 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:37,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:37,448 INFO L93 Difference]: Finished difference Result 4608 states and 17990 transitions. [2021-10-06 16:20:37,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-06 16:20:37,448 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.088235294117647) internal successors, (37), 34 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-06 16:20:37,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:37,461 INFO L225 Difference]: With dead ends: 4608 [2021-10-06 16:20:37,461 INFO L226 Difference]: Without dead ends: 3968 [2021-10-06 16:20:37,462 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 426.7ms TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 16:20:37,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3968 states. [2021-10-06 16:20:37,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3968 to 2232. [2021-10-06 16:20:37,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2232 states, 2217 states have (on average 3.900766801984664) internal successors, (8648), 2231 states have internal predecessors, (8648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:37,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2232 states to 2232 states and 8648 transitions. [2021-10-06 16:20:37,517 INFO L78 Accepts]: Start accepts. Automaton has 2232 states and 8648 transitions. Word has length 34 [2021-10-06 16:20:37,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:37,517 INFO L470 AbstractCegarLoop]: Abstraction has 2232 states and 8648 transitions. [2021-10-06 16:20:37,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.088235294117647) internal successors, (37), 34 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:37,518 INFO L276 IsEmpty]: Start isEmpty. Operand 2232 states and 8648 transitions. [2021-10-06 16:20:37,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-06 16:20:37,523 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:37,523 INFO L512 BasicCegarLoop]: trace histogram [32, 1, 1, 1] [2021-10-06 16:20:37,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2021-10-06 16:20:37,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-10-06 16:20:37,736 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:37,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:37,737 INFO L82 PathProgramCache]: Analyzing trace with hash 2015762457, now seen corresponding path program 32 times [2021-10-06 16:20:37,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:37,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715352582] [2021-10-06 16:20:37,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:37,738 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:37,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:38,282 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:38,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:38,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715352582] [2021-10-06 16:20:38,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715352582] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:38,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794894101] [2021-10-06 16:20:38,283 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:20:38,283 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:38,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:38,284 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:20:38,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-10-06 16:20:38,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:20:38,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:20:38,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-06 16:20:38,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:38,656 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:38,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794894101] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:38,657 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:20:38,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-10-06 16:20:38,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706304312] [2021-10-06 16:20:38,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-10-06 16:20:38,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:38,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-10-06 16:20:38,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 16:20:38,659 INFO L87 Difference]: Start difference. First operand 2232 states and 8648 transitions. Second operand has 36 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 35 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:39,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:39,166 INFO L93 Difference]: Finished difference Result 4744 states and 18523 transitions. [2021-10-06 16:20:39,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-06 16:20:39,166 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 35 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-06 16:20:39,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:39,179 INFO L225 Difference]: With dead ends: 4744 [2021-10-06 16:20:39,179 INFO L226 Difference]: Without dead ends: 4084 [2021-10-06 16:20:39,180 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 462.1ms TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 16:20:39,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4084 states. [2021-10-06 16:20:39,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4084 to 2292. [2021-10-06 16:20:39,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2292 states, 2277 states have (on average 3.8998682476943345) internal successors, (8880), 2291 states have internal predecessors, (8880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:39,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2292 states to 2292 states and 8880 transitions. [2021-10-06 16:20:39,249 INFO L78 Accepts]: Start accepts. Automaton has 2292 states and 8880 transitions. Word has length 35 [2021-10-06 16:20:39,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:39,249 INFO L470 AbstractCegarLoop]: Abstraction has 2292 states and 8880 transitions. [2021-10-06 16:20:39,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 35 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:39,250 INFO L276 IsEmpty]: Start isEmpty. Operand 2292 states and 8880 transitions. [2021-10-06 16:20:39,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-06 16:20:39,255 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:39,255 INFO L512 BasicCegarLoop]: trace histogram [33, 1, 1, 1] [2021-10-06 16:20:39,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2021-10-06 16:20:39,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-10-06 16:20:39,470 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:39,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:39,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1935872670, now seen corresponding path program 33 times [2021-10-06 16:20:39,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:39,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767394719] [2021-10-06 16:20:39,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:39,471 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:39,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:40,048 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:40,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:40,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767394719] [2021-10-06 16:20:40,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767394719] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:40,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862896536] [2021-10-06 16:20:40,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:20:40,050 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:40,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:40,051 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:20:40,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-10-06 16:20:40,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-10-06 16:20:40,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:20:40,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-06 16:20:40,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:40,468 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:40,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862896536] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:40,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:20:40,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-10-06 16:20:40,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451718227] [2021-10-06 16:20:40,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-10-06 16:20:40,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:40,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-10-06 16:20:40,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2021-10-06 16:20:40,471 INFO L87 Difference]: Start difference. First operand 2292 states and 8880 transitions. Second operand has 37 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 36 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:41,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:41,076 INFO L93 Difference]: Finished difference Result 4880 states and 19056 transitions. [2021-10-06 16:20:41,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-06 16:20:41,077 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 36 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-10-06 16:20:41,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:41,091 INFO L225 Difference]: With dead ends: 4880 [2021-10-06 16:20:41,091 INFO L226 Difference]: Without dead ends: 4200 [2021-10-06 16:20:41,092 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 480.5ms TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2021-10-06 16:20:41,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4200 states. [2021-10-06 16:20:41,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4200 to 2352. [2021-10-06 16:20:41,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2352 states, 2337 states have (on average 3.899015832263586) internal successors, (9112), 2351 states have internal predecessors, (9112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:41,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2352 states to 2352 states and 9112 transitions. [2021-10-06 16:20:41,155 INFO L78 Accepts]: Start accepts. Automaton has 2352 states and 9112 transitions. Word has length 36 [2021-10-06 16:20:41,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:41,156 INFO L470 AbstractCegarLoop]: Abstraction has 2352 states and 9112 transitions. [2021-10-06 16:20:41,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 36 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:41,156 INFO L276 IsEmpty]: Start isEmpty. Operand 2352 states and 9112 transitions. [2021-10-06 16:20:41,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-06 16:20:41,160 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:41,160 INFO L512 BasicCegarLoop]: trace histogram [34, 1, 1, 1] [2021-10-06 16:20:41,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2021-10-06 16:20:41,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:41,361 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:41,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:41,362 INFO L82 PathProgramCache]: Analyzing trace with hash 117489977, now seen corresponding path program 34 times [2021-10-06 16:20:41,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:41,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339022186] [2021-10-06 16:20:41,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:41,363 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:41,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:41,926 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:41,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:41,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339022186] [2021-10-06 16:20:41,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339022186] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:41,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257815221] [2021-10-06 16:20:41,927 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 16:20:41,927 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:41,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:41,929 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:20:41,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-10-06 16:20:42,219 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 16:20:42,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:20:42,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-06 16:20:42,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:42,327 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:42,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257815221] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:42,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:20:42,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-10-06 16:20:42,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393701861] [2021-10-06 16:20:42,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-10-06 16:20:42,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:42,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-10-06 16:20:42,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-10-06 16:20:42,330 INFO L87 Difference]: Start difference. First operand 2352 states and 9112 transitions. Second operand has 38 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 37 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:42,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:42,930 INFO L93 Difference]: Finished difference Result 5016 states and 19589 transitions. [2021-10-06 16:20:42,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-06 16:20:42,931 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 37 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-06 16:20:42,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:42,946 INFO L225 Difference]: With dead ends: 5016 [2021-10-06 16:20:42,946 INFO L226 Difference]: Without dead ends: 4316 [2021-10-06 16:20:42,947 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 475.2ms TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-10-06 16:20:42,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4316 states. [2021-10-06 16:20:43,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4316 to 2412. [2021-10-06 16:20:43,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2412 states, 2397 states have (on average 3.898206090947017) internal successors, (9344), 2411 states have internal predecessors, (9344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:43,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 9344 transitions. [2021-10-06 16:20:43,013 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 9344 transitions. Word has length 37 [2021-10-06 16:20:43,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:43,013 INFO L470 AbstractCegarLoop]: Abstraction has 2412 states and 9344 transitions. [2021-10-06 16:20:43,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 37 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:43,013 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 9344 transitions. [2021-10-06 16:20:43,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 16:20:43,018 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:43,018 INFO L512 BasicCegarLoop]: trace histogram [35, 1, 1, 1] [2021-10-06 16:20:43,045 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2021-10-06 16:20:43,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:43,219 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:43,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:43,220 INFO L82 PathProgramCache]: Analyzing trace with hash -652777406, now seen corresponding path program 35 times [2021-10-06 16:20:43,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:43,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418678682] [2021-10-06 16:20:43,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:43,221 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:43,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:43,819 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:43,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:43,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418678682] [2021-10-06 16:20:43,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418678682] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:43,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747877674] [2021-10-06 16:20:43,820 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 16:20:43,821 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:43,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:43,829 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:20:43,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-10-06 16:20:44,143 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2021-10-06 16:20:44,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:20:44,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-06 16:20:44,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:44,260 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:44,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747877674] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:44,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:20:44,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2021-10-06 16:20:44,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656877929] [2021-10-06 16:20:44,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-10-06 16:20:44,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:44,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-10-06 16:20:44,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-10-06 16:20:44,263 INFO L87 Difference]: Start difference. First operand 2412 states and 9344 transitions. Second operand has 39 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:44,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:44,901 INFO L93 Difference]: Finished difference Result 5152 states and 20122 transitions. [2021-10-06 16:20:44,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-06 16:20:44,902 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-06 16:20:44,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:44,918 INFO L225 Difference]: With dead ends: 5152 [2021-10-06 16:20:44,919 INFO L226 Difference]: Without dead ends: 4432 [2021-10-06 16:20:44,919 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 508.2ms TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-10-06 16:20:44,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4432 states. [2021-10-06 16:20:44,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4432 to 2472. [2021-10-06 16:20:44,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2472 states, 2457 states have (on average 3.8974358974358974) internal successors, (9576), 2471 states have internal predecessors, (9576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:44,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2472 states to 2472 states and 9576 transitions. [2021-10-06 16:20:44,981 INFO L78 Accepts]: Start accepts. Automaton has 2472 states and 9576 transitions. Word has length 38 [2021-10-06 16:20:44,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:44,981 INFO L470 AbstractCegarLoop]: Abstraction has 2472 states and 9576 transitions. [2021-10-06 16:20:44,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:44,981 INFO L276 IsEmpty]: Start isEmpty. Operand 2472 states and 9576 transitions. [2021-10-06 16:20:44,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-06 16:20:44,986 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:44,986 INFO L512 BasicCegarLoop]: trace histogram [36, 1, 1, 1] [2021-10-06 16:20:45,011 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2021-10-06 16:20:45,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:45,187 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:45,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:45,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1238737497, now seen corresponding path program 36 times [2021-10-06 16:20:45,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:45,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822602960] [2021-10-06 16:20:45,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:45,189 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:45,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:45,865 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:45,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:45,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822602960] [2021-10-06 16:20:45,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822602960] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:45,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790699990] [2021-10-06 16:20:45,866 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 16:20:45,866 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:45,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:45,868 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:20:45,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-10-06 16:20:46,203 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-10-06 16:20:46,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:20:46,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-06 16:20:46,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:46,317 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:46,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790699990] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:46,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:20:46,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2021-10-06 16:20:46,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671842103] [2021-10-06 16:20:46,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-10-06 16:20:46,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:46,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-10-06 16:20:46,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2021-10-06 16:20:46,319 INFO L87 Difference]: Start difference. First operand 2472 states and 9576 transitions. Second operand has 40 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 39 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:46,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:46,948 INFO L93 Difference]: Finished difference Result 5288 states and 20655 transitions. [2021-10-06 16:20:46,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-06 16:20:46,948 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 39 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-10-06 16:20:46,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:46,963 INFO L225 Difference]: With dead ends: 5288 [2021-10-06 16:20:46,963 INFO L226 Difference]: Without dead ends: 4548 [2021-10-06 16:20:46,964 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 579.0ms TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2021-10-06 16:20:46,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4548 states. [2021-10-06 16:20:47,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4548 to 2532. [2021-10-06 16:20:47,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2532 states, 2517 states have (on average 3.8967024235200634) internal successors, (9808), 2531 states have internal predecessors, (9808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:47,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2532 states to 2532 states and 9808 transitions. [2021-10-06 16:20:47,026 INFO L78 Accepts]: Start accepts. Automaton has 2532 states and 9808 transitions. Word has length 39 [2021-10-06 16:20:47,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:47,026 INFO L470 AbstractCegarLoop]: Abstraction has 2532 states and 9808 transitions. [2021-10-06 16:20:47,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 39 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:47,027 INFO L276 IsEmpty]: Start isEmpty. Operand 2532 states and 9808 transitions. [2021-10-06 16:20:47,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-06 16:20:47,032 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:47,032 INFO L512 BasicCegarLoop]: trace histogram [37, 1, 1, 1] [2021-10-06 16:20:47,058 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2021-10-06 16:20:47,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:47,233 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:47,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:47,234 INFO L82 PathProgramCache]: Analyzing trace with hash -253842654, now seen corresponding path program 37 times [2021-10-06 16:20:47,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:47,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212016543] [2021-10-06 16:20:47,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:47,235 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:47,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:47,892 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:47,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:47,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212016543] [2021-10-06 16:20:47,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212016543] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:47,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534861737] [2021-10-06 16:20:47,892 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 16:20:47,893 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:47,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:47,894 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:20:47,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-10-06 16:20:48,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:48,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 40 conjunts are in the unsatisfiable core [2021-10-06 16:20:48,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:48,338 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:48,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534861737] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:48,339 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:20:48,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2021-10-06 16:20:48,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974782985] [2021-10-06 16:20:48,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-10-06 16:20:48,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:48,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-10-06 16:20:48,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2021-10-06 16:20:48,341 INFO L87 Difference]: Start difference. First operand 2532 states and 9808 transitions. Second operand has 41 states, 40 states have (on average 1.075) internal successors, (43), 40 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:49,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:49,007 INFO L93 Difference]: Finished difference Result 5424 states and 21188 transitions. [2021-10-06 16:20:49,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-06 16:20:49,007 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 1.075) internal successors, (43), 40 states have internal predecessors, (43), 0 states have call successors, (0), 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 40 [2021-10-06 16:20:49,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:49,022 INFO L225 Difference]: With dead ends: 5424 [2021-10-06 16:20:49,022 INFO L226 Difference]: Without dead ends: 4664 [2021-10-06 16:20:49,022 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 555.6ms TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2021-10-06 16:20:49,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4664 states. [2021-10-06 16:20:49,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4664 to 2592. [2021-10-06 16:20:49,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2592 states, 2577 states have (on average 3.8960031043849437) internal successors, (10040), 2591 states have internal predecessors, (10040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:49,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2592 states to 2592 states and 10040 transitions. [2021-10-06 16:20:49,086 INFO L78 Accepts]: Start accepts. Automaton has 2592 states and 10040 transitions. Word has length 40 [2021-10-06 16:20:49,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:49,086 INFO L470 AbstractCegarLoop]: Abstraction has 2592 states and 10040 transitions. [2021-10-06 16:20:49,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 1.075) internal successors, (43), 40 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:49,086 INFO L276 IsEmpty]: Start isEmpty. Operand 2592 states and 10040 transitions. [2021-10-06 16:20:49,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 16:20:49,091 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:49,091 INFO L512 BasicCegarLoop]: trace histogram [38, 1, 1, 1] [2021-10-06 16:20:49,116 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2021-10-06 16:20:49,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-10-06 16:20:49,292 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:49,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:49,293 INFO L82 PathProgramCache]: Analyzing trace with hash 720812921, now seen corresponding path program 38 times [2021-10-06 16:20:49,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:49,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552078878] [2021-10-06 16:20:49,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:49,294 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:49,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:50,004 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:50,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:50,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552078878] [2021-10-06 16:20:50,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552078878] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:50,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169216366] [2021-10-06 16:20:50,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:20:50,005 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:50,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:50,007 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:20:50,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-10-06 16:20:50,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:20:50,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:20:50,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-06 16:20:50,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:50,471 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:50,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169216366] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:50,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:20:50,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-10-06 16:20:50,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228258770] [2021-10-06 16:20:50,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-10-06 16:20:50,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:50,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-10-06 16:20:50,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2021-10-06 16:20:50,480 INFO L87 Difference]: Start difference. First operand 2592 states and 10040 transitions. Second operand has 42 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 41 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:51,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:51,173 INFO L93 Difference]: Finished difference Result 5560 states and 21721 transitions. [2021-10-06 16:20:51,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-06 16:20:51,173 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 41 states have internal predecessors, (44), 0 states have call successors, (0), 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 41 [2021-10-06 16:20:51,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:51,191 INFO L225 Difference]: With dead ends: 5560 [2021-10-06 16:20:51,191 INFO L226 Difference]: Without dead ends: 4780 [2021-10-06 16:20:51,192 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 612.6ms TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2021-10-06 16:20:51,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4780 states. [2021-10-06 16:20:51,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4780 to 2652. [2021-10-06 16:20:51,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2652 states, 2637 states have (on average 3.8953356086461888) internal successors, (10272), 2651 states have internal predecessors, (10272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:51,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2652 states to 2652 states and 10272 transitions. [2021-10-06 16:20:51,269 INFO L78 Accepts]: Start accepts. Automaton has 2652 states and 10272 transitions. Word has length 41 [2021-10-06 16:20:51,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:51,269 INFO L470 AbstractCegarLoop]: Abstraction has 2652 states and 10272 transitions. [2021-10-06 16:20:51,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 41 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:51,269 INFO L276 IsEmpty]: Start isEmpty. Operand 2652 states and 10272 transitions. [2021-10-06 16:20:51,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-06 16:20:51,274 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:51,274 INFO L512 BasicCegarLoop]: trace histogram [39, 1, 1, 1] [2021-10-06 16:20:51,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2021-10-06 16:20:51,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-10-06 16:20:51,475 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:51,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:51,476 INFO L82 PathProgramCache]: Analyzing trace with hash 870364674, now seen corresponding path program 39 times [2021-10-06 16:20:51,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:51,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071758100] [2021-10-06 16:20:51,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:51,477 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:51,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:52,268 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:52,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:52,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071758100] [2021-10-06 16:20:52,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071758100] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:52,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122164241] [2021-10-06 16:20:52,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:20:52,270 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:52,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:52,271 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:20:52,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-10-06 16:20:52,651 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2021-10-06 16:20:52,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:20:52,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-06 16:20:52,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:52,786 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:52,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122164241] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:52,787 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:20:52,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2021-10-06 16:20:52,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723518529] [2021-10-06 16:20:52,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-10-06 16:20:52,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:52,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-10-06 16:20:52,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2021-10-06 16:20:52,789 INFO L87 Difference]: Start difference. First operand 2652 states and 10272 transitions. Second operand has 43 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 42 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:53,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:53,549 INFO L93 Difference]: Finished difference Result 5696 states and 22254 transitions. [2021-10-06 16:20:53,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-06 16:20:53,550 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 42 states have internal predecessors, (45), 0 states have call successors, (0), 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 42 [2021-10-06 16:20:53,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:53,565 INFO L225 Difference]: With dead ends: 5696 [2021-10-06 16:20:53,566 INFO L226 Difference]: Without dead ends: 4896 [2021-10-06 16:20:53,566 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 690.5ms TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2021-10-06 16:20:53,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4896 states. [2021-10-06 16:20:53,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4896 to 2712. [2021-10-06 16:20:53,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2712 states, 2697 states have (on average 3.8946978123841305) internal successors, (10504), 2711 states have internal predecessors, (10504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:53,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2712 states to 2712 states and 10504 transitions. [2021-10-06 16:20:53,633 INFO L78 Accepts]: Start accepts. Automaton has 2712 states and 10504 transitions. Word has length 42 [2021-10-06 16:20:53,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:53,634 INFO L470 AbstractCegarLoop]: Abstraction has 2712 states and 10504 transitions. [2021-10-06 16:20:53,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 42 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:53,634 INFO L276 IsEmpty]: Start isEmpty. Operand 2712 states and 10504 transitions. [2021-10-06 16:20:53,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-06 16:20:53,640 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:53,640 INFO L512 BasicCegarLoop]: trace histogram [40, 1, 1, 1] [2021-10-06 16:20:53,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2021-10-06 16:20:53,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-10-06 16:20:53,841 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:53,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:53,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1211501721, now seen corresponding path program 40 times [2021-10-06 16:20:53,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:53,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140875633] [2021-10-06 16:20:53,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:53,843 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:53,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:54,645 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:54,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:54,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140875633] [2021-10-06 16:20:54,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140875633] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:54,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158594834] [2021-10-06 16:20:54,646 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 16:20:54,646 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:54,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:54,647 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:20:54,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-10-06 16:20:55,025 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 16:20:55,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:20:55,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-06 16:20:55,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:55,151 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:55,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158594834] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:55,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:20:55,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-10-06 16:20:55,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861655849] [2021-10-06 16:20:55,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-10-06 16:20:55,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:55,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-10-06 16:20:55,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2021-10-06 16:20:55,153 INFO L87 Difference]: Start difference. First operand 2712 states and 10504 transitions. Second operand has 44 states, 43 states have (on average 1.069767441860465) internal successors, (46), 43 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:55,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:55,912 INFO L93 Difference]: Finished difference Result 5832 states and 22787 transitions. [2021-10-06 16:20:55,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-06 16:20:55,913 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 1.069767441860465) internal successors, (46), 43 states have internal predecessors, (46), 0 states have call successors, (0), 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 43 [2021-10-06 16:20:55,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:55,929 INFO L225 Difference]: With dead ends: 5832 [2021-10-06 16:20:55,929 INFO L226 Difference]: Without dead ends: 5012 [2021-10-06 16:20:55,929 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 703.5ms TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2021-10-06 16:20:55,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5012 states. [2021-10-06 16:20:55,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5012 to 2772. [2021-10-06 16:20:55,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2772 states, 2757 states have (on average 3.894087776568734) internal successors, (10736), 2771 states have internal predecessors, (10736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:55,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2772 states to 2772 states and 10736 transitions. [2021-10-06 16:20:56,000 INFO L78 Accepts]: Start accepts. Automaton has 2772 states and 10736 transitions. Word has length 43 [2021-10-06 16:20:56,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:56,000 INFO L470 AbstractCegarLoop]: Abstraction has 2772 states and 10736 transitions. [2021-10-06 16:20:56,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 1.069767441860465) internal successors, (46), 43 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:56,000 INFO L276 IsEmpty]: Start isEmpty. Operand 2772 states and 10736 transitions. [2021-10-06 16:20:56,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-06 16:20:56,005 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:56,005 INFO L512 BasicCegarLoop]: trace histogram [41, 1, 1, 1] [2021-10-06 16:20:56,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2021-10-06 16:20:56,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-10-06 16:20:56,207 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:56,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:56,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1098151710, now seen corresponding path program 41 times [2021-10-06 16:20:56,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:56,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363768371] [2021-10-06 16:20:56,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:56,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:56,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:57,061 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:57,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:57,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363768371] [2021-10-06 16:20:57,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363768371] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:57,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108265394] [2021-10-06 16:20:57,062 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 16:20:57,063 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:57,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:57,064 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:20:57,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-10-06 16:20:57,450 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2021-10-06 16:20:57,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:20:57,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-06 16:20:57,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:57,577 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:57,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108265394] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:57,578 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:20:57,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 43 [2021-10-06 16:20:57,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652979569] [2021-10-06 16:20:57,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-10-06 16:20:57,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:57,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-10-06 16:20:57,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2021-10-06 16:20:57,580 INFO L87 Difference]: Start difference. First operand 2772 states and 10736 transitions. Second operand has 45 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 44 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:58,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:58,371 INFO L93 Difference]: Finished difference Result 5968 states and 23320 transitions. [2021-10-06 16:20:58,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-06 16:20:58,371 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 44 states have internal predecessors, (47), 0 states have call successors, (0), 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 44 [2021-10-06 16:20:58,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:58,387 INFO L225 Difference]: With dead ends: 5968 [2021-10-06 16:20:58,387 INFO L226 Difference]: Without dead ends: 5128 [2021-10-06 16:20:58,388 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 738.3ms TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2021-10-06 16:20:58,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5128 states. [2021-10-06 16:20:58,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5128 to 2832. [2021-10-06 16:20:58,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2832 states, 2817 states have (on average 3.893503727369542) internal successors, (10968), 2831 states have internal predecessors, (10968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:58,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2832 states to 2832 states and 10968 transitions. [2021-10-06 16:20:58,523 INFO L78 Accepts]: Start accepts. Automaton has 2832 states and 10968 transitions. Word has length 44 [2021-10-06 16:20:58,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:58,523 INFO L470 AbstractCegarLoop]: Abstraction has 2832 states and 10968 transitions. [2021-10-06 16:20:58,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 44 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:58,524 INFO L276 IsEmpty]: Start isEmpty. Operand 2832 states and 10968 transitions. [2021-10-06 16:20:58,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-06 16:20:58,531 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:58,531 INFO L512 BasicCegarLoop]: trace histogram [42, 1, 1, 1] [2021-10-06 16:20:58,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2021-10-06 16:20:58,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:58,745 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:20:58,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:58,746 INFO L82 PathProgramCache]: Analyzing trace with hash 317035961, now seen corresponding path program 42 times [2021-10-06 16:20:58,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:58,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98527736] [2021-10-06 16:20:58,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:58,747 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:58,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:59,631 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:59,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:59,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98527736] [2021-10-06 16:20:59,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98527736] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:59,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223808444] [2021-10-06 16:20:59,632 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 16:20:59,632 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:59,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:59,634 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:20:59,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-10-06 16:21:00,056 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2021-10-06 16:21:00,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:21:00,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-06 16:21:00,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:21:00,177 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:21:00,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223808444] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:00,177 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:21:00,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 44 [2021-10-06 16:21:00,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661991933] [2021-10-06 16:21:00,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-10-06 16:21:00,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:21:00,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-10-06 16:21:00,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-10-06 16:21:00,180 INFO L87 Difference]: Start difference. First operand 2832 states and 10968 transitions. Second operand has 46 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 45 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:01,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:21:01,051 INFO L93 Difference]: Finished difference Result 6104 states and 23853 transitions. [2021-10-06 16:21:01,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-06 16:21:01,051 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 45 states have internal predecessors, (48), 0 states have call successors, (0), 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 45 [2021-10-06 16:21:01,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:21:01,067 INFO L225 Difference]: With dead ends: 6104 [2021-10-06 16:21:01,068 INFO L226 Difference]: Without dead ends: 5244 [2021-10-06 16:21:01,068 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 784.8ms TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-10-06 16:21:01,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5244 states. [2021-10-06 16:21:01,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5244 to 2892. [2021-10-06 16:21:01,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2877 states have (on average 3.8929440389294405) internal successors, (11200), 2891 states have internal predecessors, (11200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:01,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 11200 transitions. [2021-10-06 16:21:01,138 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 11200 transitions. Word has length 45 [2021-10-06 16:21:01,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:21:01,138 INFO L470 AbstractCegarLoop]: Abstraction has 2892 states and 11200 transitions. [2021-10-06 16:21:01,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 45 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:01,138 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 11200 transitions. [2021-10-06 16:21:01,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-06 16:21:01,144 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:21:01,144 INFO L512 BasicCegarLoop]: trace histogram [43, 1, 1, 1] [2021-10-06 16:21:01,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2021-10-06 16:21:01,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-10-06 16:21:01,360 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:21:01,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:21:01,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1238180802, now seen corresponding path program 43 times [2021-10-06 16:21:01,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:21:01,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359359511] [2021-10-06 16:21:01,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:21:01,362 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:21:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:21:02,277 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:21:02,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:21:02,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359359511] [2021-10-06 16:21:02,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359359511] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:02,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995590163] [2021-10-06 16:21:02,278 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 16:21:02,278 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:21:02,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:21:02,280 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:21:02,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-10-06 16:21:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:21:02,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 46 conjunts are in the unsatisfiable core [2021-10-06 16:21:02,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:21:02,816 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:21:02,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995590163] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:02,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:21:02,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 45 [2021-10-06 16:21:02,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959855548] [2021-10-06 16:21:02,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-10-06 16:21:02,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:21:02,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-10-06 16:21:02,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2021-10-06 16:21:02,819 INFO L87 Difference]: Start difference. First operand 2892 states and 11200 transitions. Second operand has 47 states, 46 states have (on average 1.065217391304348) internal successors, (49), 46 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:03,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:21:03,752 INFO L93 Difference]: Finished difference Result 6240 states and 24386 transitions. [2021-10-06 16:21:03,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-06 16:21:03,752 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.065217391304348) internal successors, (49), 46 states have internal predecessors, (49), 0 states have call successors, (0), 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 46 [2021-10-06 16:21:03,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:21:03,769 INFO L225 Difference]: With dead ends: 6240 [2021-10-06 16:21:03,770 INFO L226 Difference]: Without dead ends: 5360 [2021-10-06 16:21:03,770 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 811.1ms TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2021-10-06 16:21:03,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5360 states. [2021-10-06 16:21:03,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5360 to 2952. [2021-10-06 16:21:03,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2952 states, 2937 states have (on average 3.892407218249915) internal successors, (11432), 2951 states have internal predecessors, (11432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:03,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2952 states to 2952 states and 11432 transitions. [2021-10-06 16:21:03,847 INFO L78 Accepts]: Start accepts. Automaton has 2952 states and 11432 transitions. Word has length 46 [2021-10-06 16:21:03,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:21:03,847 INFO L470 AbstractCegarLoop]: Abstraction has 2952 states and 11432 transitions. [2021-10-06 16:21:03,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.065217391304348) internal successors, (49), 46 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:03,847 INFO L276 IsEmpty]: Start isEmpty. Operand 2952 states and 11432 transitions. [2021-10-06 16:21:03,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-06 16:21:03,853 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:21:03,853 INFO L512 BasicCegarLoop]: trace histogram [44, 1, 1, 1] [2021-10-06 16:21:03,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2021-10-06 16:21:04,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,53 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:21:04,068 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:21:04,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:21:04,068 INFO L82 PathProgramCache]: Analyzing trace with hash -271100199, now seen corresponding path program 44 times [2021-10-06 16:21:04,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:21:04,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892873536] [2021-10-06 16:21:04,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:21:04,069 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:21:04,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:21:05,033 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:21:05,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:21:05,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892873536] [2021-10-06 16:21:05,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892873536] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:05,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873634925] [2021-10-06 16:21:05,034 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:21:05,035 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:21:05,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:21:05,036 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:21:05,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-10-06 16:21:05,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:21:05,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:21:05,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-06 16:21:05,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:21:05,620 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:21:05,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873634925] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:05,620 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:21:05,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 46 [2021-10-06 16:21:05,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335578355] [2021-10-06 16:21:05,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-10-06 16:21:05,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:21:05,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-10-06 16:21:05,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-10-06 16:21:05,623 INFO L87 Difference]: Start difference. First operand 2952 states and 11432 transitions. Second operand has 48 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 47 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:06,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:21:06,576 INFO L93 Difference]: Finished difference Result 6376 states and 24919 transitions. [2021-10-06 16:21:06,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-06 16:21:06,577 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 47 states have internal predecessors, (50), 0 states have call successors, (0), 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 47 [2021-10-06 16:21:06,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:21:06,597 INFO L225 Difference]: With dead ends: 6376 [2021-10-06 16:21:06,597 INFO L226 Difference]: Without dead ends: 5476 [2021-10-06 16:21:06,598 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 854.2ms TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-10-06 16:21:06,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5476 states. [2021-10-06 16:21:06,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5476 to 3012. [2021-10-06 16:21:06,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3012 states, 2997 states have (on average 3.891891891891892) internal successors, (11664), 3011 states have internal predecessors, (11664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:06,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3012 states to 3012 states and 11664 transitions. [2021-10-06 16:21:06,683 INFO L78 Accepts]: Start accepts. Automaton has 3012 states and 11664 transitions. Word has length 47 [2021-10-06 16:21:06,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:21:06,683 INFO L470 AbstractCegarLoop]: Abstraction has 3012 states and 11664 transitions. [2021-10-06 16:21:06,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 47 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:06,684 INFO L276 IsEmpty]: Start isEmpty. Operand 3012 states and 11664 transitions. [2021-10-06 16:21:06,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-10-06 16:21:06,689 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:21:06,690 INFO L512 BasicCegarLoop]: trace histogram [45, 1, 1, 1] [2021-10-06 16:21:06,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2021-10-06 16:21:06,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,54 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:21:06,898 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:21:06,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:21:06,899 INFO L82 PathProgramCache]: Analyzing trace with hash 185829026, now seen corresponding path program 45 times [2021-10-06 16:21:06,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:21:06,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461494767] [2021-10-06 16:21:06,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:21:06,900 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:21:06,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:21:07,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:21:07,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:21:07,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461494767] [2021-10-06 16:21:07,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461494767] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:07,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826609284] [2021-10-06 16:21:07,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:21:07,807 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:21:07,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:21:07,811 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:21:07,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-10-06 16:21:08,285 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2021-10-06 16:21:08,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:21:08,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-06 16:21:08,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:21:08,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:21:08,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826609284] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:08,425 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:21:08,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 47 [2021-10-06 16:21:08,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165751219] [2021-10-06 16:21:08,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-10-06 16:21:08,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:21:08,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-10-06 16:21:08,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-10-06 16:21:08,427 INFO L87 Difference]: Start difference. First operand 3012 states and 11664 transitions. Second operand has 49 states, 48 states have (on average 1.0625) internal successors, (51), 48 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:09,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:21:09,430 INFO L93 Difference]: Finished difference Result 6512 states and 25452 transitions. [2021-10-06 16:21:09,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-06 16:21:09,431 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 1.0625) internal successors, (51), 48 states have internal predecessors, (51), 0 states have call successors, (0), 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 48 [2021-10-06 16:21:09,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:21:09,450 INFO L225 Difference]: With dead ends: 6512 [2021-10-06 16:21:09,450 INFO L226 Difference]: Without dead ends: 5592 [2021-10-06 16:21:09,451 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 789.4ms TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-10-06 16:21:09,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5592 states. [2021-10-06 16:21:09,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5592 to 3072. [2021-10-06 16:21:09,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3072 states, 3057 states have (on average 3.8913967942427217) internal successors, (11896), 3071 states have internal predecessors, (11896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:09,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3072 states to 3072 states and 11896 transitions. [2021-10-06 16:21:09,533 INFO L78 Accepts]: Start accepts. Automaton has 3072 states and 11896 transitions. Word has length 48 [2021-10-06 16:21:09,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:21:09,534 INFO L470 AbstractCegarLoop]: Abstraction has 3072 states and 11896 transitions. [2021-10-06 16:21:09,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 1.0625) internal successors, (51), 48 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:09,534 INFO L276 IsEmpty]: Start isEmpty. Operand 3072 states and 11896 transitions. [2021-10-06 16:21:09,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-06 16:21:09,540 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:21:09,540 INFO L512 BasicCegarLoop]: trace histogram [46, 1, 1, 1] [2021-10-06 16:21:09,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2021-10-06 16:21:09,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,55 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:21:09,741 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:21:09,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:21:09,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1465733113, now seen corresponding path program 46 times [2021-10-06 16:21:09,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:21:09,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079801872] [2021-10-06 16:21:09,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:21:09,743 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:21:09,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:21:10,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:21:10,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:21:10,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079801872] [2021-10-06 16:21:10,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079801872] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:10,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025120437] [2021-10-06 16:21:10,805 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 16:21:10,805 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:21:10,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:21:10,807 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:21:10,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-10-06 16:21:11,205 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 16:21:11,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:21:11,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 49 conjunts are in the unsatisfiable core [2021-10-06 16:21:11,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:21:11,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:21:11,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025120437] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:11,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:21:11,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 48 [2021-10-06 16:21:11,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178402406] [2021-10-06 16:21:11,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-10-06 16:21:11,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:21:11,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-10-06 16:21:11,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2021-10-06 16:21:11,342 INFO L87 Difference]: Start difference. First operand 3072 states and 11896 transitions. Second operand has 50 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 49 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:12,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:21:12,464 INFO L93 Difference]: Finished difference Result 6648 states and 25985 transitions. [2021-10-06 16:21:12,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-06 16:21:12,465 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 49 states have internal predecessors, (52), 0 states have call successors, (0), 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 49 [2021-10-06 16:21:12,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:21:12,483 INFO L225 Difference]: With dead ends: 6648 [2021-10-06 16:21:12,483 INFO L226 Difference]: Without dead ends: 5708 [2021-10-06 16:21:12,483 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 933.0ms TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2021-10-06 16:21:12,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5708 states. [2021-10-06 16:21:12,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5708 to 3132. [2021-10-06 16:21:12,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3132 states, 3117 states have (on average 3.890920757138274) internal successors, (12128), 3131 states have internal predecessors, (12128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:12,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3132 states to 3132 states and 12128 transitions. [2021-10-06 16:21:12,570 INFO L78 Accepts]: Start accepts. Automaton has 3132 states and 12128 transitions. Word has length 49 [2021-10-06 16:21:12,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:21:12,570 INFO L470 AbstractCegarLoop]: Abstraction has 3132 states and 12128 transitions. [2021-10-06 16:21:12,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 49 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:12,570 INFO L276 IsEmpty]: Start isEmpty. Operand 3132 states and 12128 transitions. [2021-10-06 16:21:12,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-06 16:21:12,577 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:21:12,577 INFO L512 BasicCegarLoop]: trace histogram [47, 1, 1, 1] [2021-10-06 16:21:12,605 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2021-10-06 16:21:12,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2021-10-06 16:21:12,778 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:21:12,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:21:12,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1806913150, now seen corresponding path program 47 times [2021-10-06 16:21:12,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:21:12,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163270894] [2021-10-06 16:21:12,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:21:12,780 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:21:12,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:21:13,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:21:13,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:21:13,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163270894] [2021-10-06 16:21:13,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163270894] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:13,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144457934] [2021-10-06 16:21:13,877 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 16:21:13,877 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:21:13,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:21:13,878 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:21:13,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-10-06 16:21:14,360 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2021-10-06 16:21:14,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:21:14,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 50 conjunts are in the unsatisfiable core [2021-10-06 16:21:14,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:21:14,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:21:14,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144457934] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:14,517 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:21:14,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 49 [2021-10-06 16:21:14,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599903806] [2021-10-06 16:21:14,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-10-06 16:21:14,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:21:14,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-10-06 16:21:14,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-10-06 16:21:14,519 INFO L87 Difference]: Start difference. First operand 3132 states and 12128 transitions. Second operand has 51 states, 50 states have (on average 1.06) internal successors, (53), 50 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:15,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:21:15,651 INFO L93 Difference]: Finished difference Result 6784 states and 26518 transitions. [2021-10-06 16:21:15,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-06 16:21:15,651 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 1.06) internal successors, (53), 50 states have internal predecessors, (53), 0 states have call successors, (0), 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 50 [2021-10-06 16:21:15,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:21:15,673 INFO L225 Difference]: With dead ends: 6784 [2021-10-06 16:21:15,673 INFO L226 Difference]: Without dead ends: 5824 [2021-10-06 16:21:15,674 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 981.1ms TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-10-06 16:21:15,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5824 states. [2021-10-06 16:21:15,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5824 to 3192. [2021-10-06 16:21:15,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3192 states, 3177 states have (on average 3.890462700661001) internal successors, (12360), 3191 states have internal predecessors, (12360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:15,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3192 states to 3192 states and 12360 transitions. [2021-10-06 16:21:15,768 INFO L78 Accepts]: Start accepts. Automaton has 3192 states and 12360 transitions. Word has length 50 [2021-10-06 16:21:15,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:21:15,768 INFO L470 AbstractCegarLoop]: Abstraction has 3192 states and 12360 transitions. [2021-10-06 16:21:15,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 1.06) internal successors, (53), 50 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:15,769 INFO L276 IsEmpty]: Start isEmpty. Operand 3192 states and 12360 transitions. [2021-10-06 16:21:15,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-06 16:21:15,775 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:21:15,776 INFO L512 BasicCegarLoop]: trace histogram [48, 1, 1, 1] [2021-10-06 16:21:15,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2021-10-06 16:21:15,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,57 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:21:15,977 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:21:15,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:21:15,977 INFO L82 PathProgramCache]: Analyzing trace with hash -179732199, now seen corresponding path program 48 times [2021-10-06 16:21:15,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:21:15,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994422637] [2021-10-06 16:21:15,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:21:15,978 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:21:16,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:21:17,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:21:17,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:21:17,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994422637] [2021-10-06 16:21:17,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994422637] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:17,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729093805] [2021-10-06 16:21:17,065 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 16:21:17,065 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:21:17,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:21:17,066 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:21:17,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-10-06 16:21:17,588 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-10-06 16:21:17,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:21:17,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 51 conjunts are in the unsatisfiable core [2021-10-06 16:21:17,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:21:17,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:21:17,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729093805] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:17,735 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:21:17,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 50 [2021-10-06 16:21:17,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790216] [2021-10-06 16:21:17,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-10-06 16:21:17,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:21:17,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-10-06 16:21:17,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-10-06 16:21:17,738 INFO L87 Difference]: Start difference. First operand 3192 states and 12360 transitions. Second operand has 52 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 51 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:18,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:21:18,915 INFO L93 Difference]: Finished difference Result 6920 states and 27051 transitions. [2021-10-06 16:21:18,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-06 16:21:18,916 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 51 states have internal predecessors, (54), 0 states have call successors, (0), 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 51 [2021-10-06 16:21:18,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:21:18,935 INFO L225 Difference]: With dead ends: 6920 [2021-10-06 16:21:18,936 INFO L226 Difference]: Without dead ends: 5940 [2021-10-06 16:21:18,936 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 958.1ms TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-10-06 16:21:18,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5940 states. [2021-10-06 16:21:19,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5940 to 3252. [2021-10-06 16:21:19,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3252 states, 3237 states have (on average 3.890021624961384) internal successors, (12592), 3251 states have internal predecessors, (12592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:19,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3252 states to 3252 states and 12592 transitions. [2021-10-06 16:21:19,034 INFO L78 Accepts]: Start accepts. Automaton has 3252 states and 12592 transitions. Word has length 51 [2021-10-06 16:21:19,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:21:19,034 INFO L470 AbstractCegarLoop]: Abstraction has 3252 states and 12592 transitions. [2021-10-06 16:21:19,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 51 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:19,034 INFO L276 IsEmpty]: Start isEmpty. Operand 3252 states and 12592 transitions. [2021-10-06 16:21:19,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-06 16:21:19,041 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:21:19,041 INFO L512 BasicCegarLoop]: trace histogram [49, 1, 1, 1] [2021-10-06 16:21:19,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2021-10-06 16:21:19,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,58 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:21:19,242 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:21:19,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:21:19,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1276730270, now seen corresponding path program 49 times [2021-10-06 16:21:19,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:21:19,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642876921] [2021-10-06 16:21:19,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:21:19,244 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:21:19,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:21:20,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:21:20,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:21:20,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642876921] [2021-10-06 16:21:20,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642876921] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:20,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733627764] [2021-10-06 16:21:20,425 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 16:21:20,426 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:21:20,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:21:20,428 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:21:20,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-10-06 16:21:20,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:21:20,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 52 conjunts are in the unsatisfiable core [2021-10-06 16:21:20,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:21:21,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:21:21,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733627764] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:21,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:21:21,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 51 [2021-10-06 16:21:21,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56705347] [2021-10-06 16:21:21,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-10-06 16:21:21,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:21:21,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-10-06 16:21:21,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2021-10-06 16:21:21,107 INFO L87 Difference]: Start difference. First operand 3252 states and 12592 transitions. Second operand has 53 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 52 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:22,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:21:22,327 INFO L93 Difference]: Finished difference Result 7056 states and 27584 transitions. [2021-10-06 16:21:22,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-06 16:21:22,327 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 52 states have internal predecessors, (55), 0 states have call successors, (0), 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 52 [2021-10-06 16:21:22,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:21:22,354 INFO L225 Difference]: With dead ends: 7056 [2021-10-06 16:21:22,354 INFO L226 Difference]: Without dead ends: 6056 [2021-10-06 16:21:22,355 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1060.2ms TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2021-10-06 16:21:22,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6056 states. [2021-10-06 16:21:22,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6056 to 3312. [2021-10-06 16:21:22,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3312 states, 3297 states have (on average 3.889596602972399) internal successors, (12824), 3311 states have internal predecessors, (12824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:22,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3312 states to 3312 states and 12824 transitions. [2021-10-06 16:21:22,445 INFO L78 Accepts]: Start accepts. Automaton has 3312 states and 12824 transitions. Word has length 52 [2021-10-06 16:21:22,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:21:22,445 INFO L470 AbstractCegarLoop]: Abstraction has 3312 states and 12824 transitions. [2021-10-06 16:21:22,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 52 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:22,445 INFO L276 IsEmpty]: Start isEmpty. Operand 3312 states and 12824 transitions. [2021-10-06 16:21:22,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-06 16:21:22,452 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:21:22,452 INFO L512 BasicCegarLoop]: trace histogram [50, 1, 1, 1] [2021-10-06 16:21:22,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2021-10-06 16:21:22,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-10-06 16:21:22,653 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:21:22,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:21:22,654 INFO L82 PathProgramCache]: Analyzing trace with hash -923932103, now seen corresponding path program 50 times [2021-10-06 16:21:22,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:21:22,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673107546] [2021-10-06 16:21:22,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:21:22,656 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:21:22,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:21:23,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:21:23,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:21:23,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673107546] [2021-10-06 16:21:23,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673107546] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:23,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268270679] [2021-10-06 16:21:23,897 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:21:23,897 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:21:23,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:21:23,898 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:21:23,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-10-06 16:21:24,420 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:21:24,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:21:24,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-06 16:21:24,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:21:24,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:21:24,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268270679] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:24,571 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:21:24,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 52 [2021-10-06 16:21:24,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999325942] [2021-10-06 16:21:24,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-10-06 16:21:24,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:21:24,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-10-06 16:21:24,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2021-10-06 16:21:24,572 INFO L87 Difference]: Start difference. First operand 3312 states and 12824 transitions. Second operand has 54 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 53 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:25,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:21:25,922 INFO L93 Difference]: Finished difference Result 7192 states and 28117 transitions. [2021-10-06 16:21:25,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-06 16:21:25,922 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 53 states have internal predecessors, (56), 0 states have call successors, (0), 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 53 [2021-10-06 16:21:25,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:21:25,943 INFO L225 Difference]: With dead ends: 7192 [2021-10-06 16:21:25,943 INFO L226 Difference]: Without dead ends: 6172 [2021-10-06 16:21:25,944 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1116.3ms TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2021-10-06 16:21:25,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6172 states. [2021-10-06 16:21:26,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6172 to 3372. [2021-10-06 16:21:26,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3372 states, 3357 states have (on average 3.8891867739052723) internal successors, (13056), 3371 states have internal predecessors, (13056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:26,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3372 states to 3372 states and 13056 transitions. [2021-10-06 16:21:26,039 INFO L78 Accepts]: Start accepts. Automaton has 3372 states and 13056 transitions. Word has length 53 [2021-10-06 16:21:26,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:21:26,039 INFO L470 AbstractCegarLoop]: Abstraction has 3372 states and 13056 transitions. [2021-10-06 16:21:26,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 53 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:26,039 INFO L276 IsEmpty]: Start isEmpty. Operand 3372 states and 13056 transitions. [2021-10-06 16:21:26,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-06 16:21:26,046 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:21:26,047 INFO L512 BasicCegarLoop]: trace histogram [51, 1, 1, 1] [2021-10-06 16:21:26,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2021-10-06 16:21:26,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,60 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:21:26,248 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:21:26,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:21:26,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1422876482, now seen corresponding path program 51 times [2021-10-06 16:21:26,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:21:26,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922289047] [2021-10-06 16:21:26,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:21:26,250 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:21:26,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:21:27,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:21:27,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:21:27,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922289047] [2021-10-06 16:21:27,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922289047] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:27,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413250545] [2021-10-06 16:21:27,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:21:27,527 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:21:27,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:21:27,528 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:21:27,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-10-06 16:21:28,108 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2021-10-06 16:21:28,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:21:28,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 54 conjunts are in the unsatisfiable core [2021-10-06 16:21:28,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:21:28,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:21:28,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413250545] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:28,276 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:21:28,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 53 [2021-10-06 16:21:28,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024470950] [2021-10-06 16:21:28,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-10-06 16:21:28,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:21:28,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-10-06 16:21:28,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2021-10-06 16:21:28,279 INFO L87 Difference]: Start difference. First operand 3372 states and 13056 transitions. Second operand has 55 states, 54 states have (on average 1.0555555555555556) internal successors, (57), 54 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:29,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:21:29,578 INFO L93 Difference]: Finished difference Result 7328 states and 28650 transitions. [2021-10-06 16:21:29,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-06 16:21:29,578 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 1.0555555555555556) internal successors, (57), 54 states have internal predecessors, (57), 0 states have call successors, (0), 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 54 [2021-10-06 16:21:29,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:21:29,599 INFO L225 Difference]: With dead ends: 7328 [2021-10-06 16:21:29,599 INFO L226 Difference]: Without dead ends: 6288 [2021-10-06 16:21:29,600 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1143.2ms TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2021-10-06 16:21:29,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6288 states. [2021-10-06 16:21:29,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6288 to 3432. [2021-10-06 16:21:29,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3432 states, 3417 states have (on average 3.8887913374304945) internal successors, (13288), 3431 states have internal predecessors, (13288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:29,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3432 states to 3432 states and 13288 transitions. [2021-10-06 16:21:29,691 INFO L78 Accepts]: Start accepts. Automaton has 3432 states and 13288 transitions. Word has length 54 [2021-10-06 16:21:29,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:21:29,691 INFO L470 AbstractCegarLoop]: Abstraction has 3432 states and 13288 transitions. [2021-10-06 16:21:29,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 1.0555555555555556) internal successors, (57), 54 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:29,692 INFO L276 IsEmpty]: Start isEmpty. Operand 3432 states and 13288 transitions. [2021-10-06 16:21:29,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-06 16:21:29,697 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:21:29,697 INFO L512 BasicCegarLoop]: trace histogram [52, 1, 1, 1] [2021-10-06 16:21:29,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2021-10-06 16:21:29,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-10-06 16:21:29,898 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:21:29,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:21:29,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1159498585, now seen corresponding path program 52 times [2021-10-06 16:21:29,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:21:29,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898828010] [2021-10-06 16:21:29,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:21:29,900 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:21:29,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:21:31,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:21:31,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:21:31,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898828010] [2021-10-06 16:21:31,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898828010] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:31,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301892533] [2021-10-06 16:21:31,217 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 16:21:31,217 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:21:31,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:21:31,218 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:21:31,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-10-06 16:21:31,779 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 16:21:31,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:21:31,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 55 conjunts are in the unsatisfiable core [2021-10-06 16:21:31,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:21:31,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:21:31,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301892533] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:31,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:21:31,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 54 [2021-10-06 16:21:31,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218172740] [2021-10-06 16:21:31,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-10-06 16:21:31,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:21:31,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-10-06 16:21:31,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2021-10-06 16:21:31,943 INFO L87 Difference]: Start difference. First operand 3432 states and 13288 transitions. Second operand has 56 states, 55 states have (on average 1.0545454545454545) internal successors, (58), 55 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:33,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:21:33,382 INFO L93 Difference]: Finished difference Result 7464 states and 29183 transitions. [2021-10-06 16:21:33,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-10-06 16:21:33,383 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 1.0545454545454545) internal successors, (58), 55 states have internal predecessors, (58), 0 states have call successors, (0), 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 55 [2021-10-06 16:21:33,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:21:33,404 INFO L225 Difference]: With dead ends: 7464 [2021-10-06 16:21:33,405 INFO L226 Difference]: Without dead ends: 6404 [2021-10-06 16:21:33,405 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1191.9ms TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2021-10-06 16:21:33,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6404 states. [2021-10-06 16:21:33,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6404 to 3492. [2021-10-06 16:21:33,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3492 states, 3477 states have (on average 3.888409548461317) internal successors, (13520), 3491 states have internal predecessors, (13520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:33,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3492 states to 3492 states and 13520 transitions. [2021-10-06 16:21:33,483 INFO L78 Accepts]: Start accepts. Automaton has 3492 states and 13520 transitions. Word has length 55 [2021-10-06 16:21:33,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:21:33,484 INFO L470 AbstractCegarLoop]: Abstraction has 3492 states and 13520 transitions. [2021-10-06 16:21:33,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 1.0545454545454545) internal successors, (58), 55 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:33,484 INFO L276 IsEmpty]: Start isEmpty. Operand 3492 states and 13520 transitions. [2021-10-06 16:21:33,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-06 16:21:33,489 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:21:33,489 INFO L512 BasicCegarLoop]: trace histogram [53, 1, 1, 1] [2021-10-06 16:21:33,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2021-10-06 16:21:33,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-10-06 16:21:33,690 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:21:33,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:21:33,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1584718370, now seen corresponding path program 53 times [2021-10-06 16:21:33,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:21:33,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924542402] [2021-10-06 16:21:33,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:21:33,692 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:21:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:21:34,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:21:34,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:21:34,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924542402] [2021-10-06 16:21:34,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924542402] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:34,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152972316] [2021-10-06 16:21:34,943 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 16:21:34,943 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:21:34,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:21:34,944 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:21:34,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-10-06 16:21:35,493 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2021-10-06 16:21:35,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:21:35,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 56 conjunts are in the unsatisfiable core [2021-10-06 16:21:35,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:21:35,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:21:35,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152972316] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:35,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:21:35,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 55 [2021-10-06 16:21:35,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399148205] [2021-10-06 16:21:35,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2021-10-06 16:21:35,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:21:35,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-10-06 16:21:35,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2021-10-06 16:21:35,637 INFO L87 Difference]: Start difference. First operand 3492 states and 13520 transitions. Second operand has 57 states, 56 states have (on average 1.0535714285714286) internal successors, (59), 56 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:36,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:21:36,916 INFO L93 Difference]: Finished difference Result 7600 states and 29716 transitions. [2021-10-06 16:21:36,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-06 16:21:36,916 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 1.0535714285714286) internal successors, (59), 56 states have internal predecessors, (59), 0 states have call successors, (0), 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 56 [2021-10-06 16:21:36,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:21:36,936 INFO L225 Difference]: With dead ends: 7600 [2021-10-06 16:21:36,936 INFO L226 Difference]: Without dead ends: 6520 [2021-10-06 16:21:36,936 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1132.7ms TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2021-10-06 16:21:36,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6520 states. [2021-10-06 16:21:37,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6520 to 3552. [2021-10-06 16:21:37,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3552 states, 3537 states have (on average 3.8880407124681935) internal successors, (13752), 3551 states have internal predecessors, (13752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:37,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3552 states to 3552 states and 13752 transitions. [2021-10-06 16:21:37,016 INFO L78 Accepts]: Start accepts. Automaton has 3552 states and 13752 transitions. Word has length 56 [2021-10-06 16:21:37,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:21:37,017 INFO L470 AbstractCegarLoop]: Abstraction has 3552 states and 13752 transitions. [2021-10-06 16:21:37,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 1.0535714285714286) internal successors, (59), 56 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:37,017 INFO L276 IsEmpty]: Start isEmpty. Operand 3552 states and 13752 transitions. [2021-10-06 16:21:37,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-06 16:21:37,022 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:21:37,022 INFO L512 BasicCegarLoop]: trace histogram [54, 1, 1, 1] [2021-10-06 16:21:37,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2021-10-06 16:21:37,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,63 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:21:37,228 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:21:37,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:21:37,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1881629817, now seen corresponding path program 54 times [2021-10-06 16:21:37,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:21:37,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268626699] [2021-10-06 16:21:37,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:21:37,230 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:21:37,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:21:38,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:21:38,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:21:38,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268626699] [2021-10-06 16:21:38,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268626699] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:38,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065523945] [2021-10-06 16:21:38,516 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 16:21:38,516 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:21:38,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:21:38,517 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:21:38,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-10-06 16:21:39,103 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2021-10-06 16:21:39,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:21:39,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 57 conjunts are in the unsatisfiable core [2021-10-06 16:21:39,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:21:39,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:21:39,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065523945] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:39,251 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:21:39,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 56 [2021-10-06 16:21:39,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346943268] [2021-10-06 16:21:39,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-10-06 16:21:39,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:21:39,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-10-06 16:21:39,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2021-10-06 16:21:39,253 INFO L87 Difference]: Start difference. First operand 3552 states and 13752 transitions. Second operand has 58 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 57 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:40,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:21:40,565 INFO L93 Difference]: Finished difference Result 7736 states and 30249 transitions. [2021-10-06 16:21:40,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-10-06 16:21:40,565 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 57 states have internal predecessors, (60), 0 states have call successors, (0), 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 57 [2021-10-06 16:21:40,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:21:40,585 INFO L225 Difference]: With dead ends: 7736 [2021-10-06 16:21:40,585 INFO L226 Difference]: Without dead ends: 6636 [2021-10-06 16:21:40,586 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1170.1ms TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2021-10-06 16:21:40,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6636 states. [2021-10-06 16:21:40,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6636 to 3612. [2021-10-06 16:21:40,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3612 states, 3597 states have (on average 3.8876841812621628) internal successors, (13984), 3611 states have internal predecessors, (13984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:40,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3612 states to 3612 states and 13984 transitions. [2021-10-06 16:21:40,669 INFO L78 Accepts]: Start accepts. Automaton has 3612 states and 13984 transitions. Word has length 57 [2021-10-06 16:21:40,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:21:40,669 INFO L470 AbstractCegarLoop]: Abstraction has 3612 states and 13984 transitions. [2021-10-06 16:21:40,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 57 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:40,670 INFO L276 IsEmpty]: Start isEmpty. Operand 3612 states and 13984 transitions. [2021-10-06 16:21:40,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-06 16:21:40,675 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:21:40,675 INFO L512 BasicCegarLoop]: trace histogram [55, 1, 1, 1] [2021-10-06 16:21:40,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2021-10-06 16:21:40,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,64 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:21:40,876 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:21:40,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:21:40,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1799017214, now seen corresponding path program 55 times [2021-10-06 16:21:40,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:21:40,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480271765] [2021-10-06 16:21:40,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:21:40,878 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:21:40,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:21:42,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:21:42,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:21:42,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480271765] [2021-10-06 16:21:42,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480271765] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:42,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475737299] [2021-10-06 16:21:42,290 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 16:21:42,290 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:21:42,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:21:42,291 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:21:42,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-10-06 16:21:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:21:42,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 58 conjunts are in the unsatisfiable core [2021-10-06 16:21:42,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:21:43,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:21:43,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475737299] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:43,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:21:43,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 57 [2021-10-06 16:21:43,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570750742] [2021-10-06 16:21:43,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2021-10-06 16:21:43,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:21:43,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-10-06 16:21:43,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2021-10-06 16:21:43,043 INFO L87 Difference]: Start difference. First operand 3612 states and 13984 transitions. Second operand has 59 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 58 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:44,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:21:44,603 INFO L93 Difference]: Finished difference Result 7872 states and 30782 transitions. [2021-10-06 16:21:44,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-10-06 16:21:44,603 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 58 states have internal predecessors, (61), 0 states have call successors, (0), 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 58 [2021-10-06 16:21:44,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:21:44,624 INFO L225 Difference]: With dead ends: 7872 [2021-10-06 16:21:44,625 INFO L226 Difference]: Without dead ends: 6752 [2021-10-06 16:21:44,625 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1277.5ms TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2021-10-06 16:21:44,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6752 states. [2021-10-06 16:21:44,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6752 to 3672. [2021-10-06 16:21:44,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3672 states, 3657 states have (on average 3.887339349193328) internal successors, (14216), 3671 states have internal predecessors, (14216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:44,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3672 states to 3672 states and 14216 transitions. [2021-10-06 16:21:44,719 INFO L78 Accepts]: Start accepts. Automaton has 3672 states and 14216 transitions. Word has length 58 [2021-10-06 16:21:44,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:21:44,719 INFO L470 AbstractCegarLoop]: Abstraction has 3672 states and 14216 transitions. [2021-10-06 16:21:44,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 58 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:44,720 INFO L276 IsEmpty]: Start isEmpty. Operand 3672 states and 14216 transitions. [2021-10-06 16:21:44,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-10-06 16:21:44,725 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:21:44,725 INFO L512 BasicCegarLoop]: trace histogram [56, 1, 1, 1] [2021-10-06 16:21:44,751 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2021-10-06 16:21:44,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2021-10-06 16:21:44,926 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:21:44,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:21:44,927 INFO L82 PathProgramCache]: Analyzing trace with hash 65041817, now seen corresponding path program 56 times [2021-10-06 16:21:44,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:21:44,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106559318] [2021-10-06 16:21:44,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:21:44,928 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:21:44,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:21:46,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:21:46,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:21:46,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106559318] [2021-10-06 16:21:46,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106559318] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:46,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155411814] [2021-10-06 16:21:46,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:21:46,478 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:21:46,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:21:46,478 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:21:46,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-10-06 16:21:47,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:21:47,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:21:47,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 59 conjunts are in the unsatisfiable core [2021-10-06 16:21:47,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:21:47,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:21:47,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155411814] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:47,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:21:47,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 58 [2021-10-06 16:21:47,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327198869] [2021-10-06 16:21:47,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2021-10-06 16:21:47,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:21:47,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-10-06 16:21:47,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2021-10-06 16:21:47,279 INFO L87 Difference]: Start difference. First operand 3672 states and 14216 transitions. Second operand has 60 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 59 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:49,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:21:49,000 INFO L93 Difference]: Finished difference Result 8008 states and 31315 transitions. [2021-10-06 16:21:49,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-10-06 16:21:49,001 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 59 states have internal predecessors, (62), 0 states have call successors, (0), 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 59 [2021-10-06 16:21:49,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:21:49,022 INFO L225 Difference]: With dead ends: 8008 [2021-10-06 16:21:49,022 INFO L226 Difference]: Without dead ends: 6868 [2021-10-06 16:21:49,023 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1379.4ms TimeCoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2021-10-06 16:21:49,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6868 states. [2021-10-06 16:21:49,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6868 to 3732. [2021-10-06 16:21:49,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3732 states, 3717 states have (on average 3.8870056497175143) internal successors, (14448), 3731 states have internal predecessors, (14448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:49,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3732 states to 3732 states and 14448 transitions. [2021-10-06 16:21:49,120 INFO L78 Accepts]: Start accepts. Automaton has 3732 states and 14448 transitions. Word has length 59 [2021-10-06 16:21:49,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:21:49,120 INFO L470 AbstractCegarLoop]: Abstraction has 3732 states and 14448 transitions. [2021-10-06 16:21:49,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 59 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:49,121 INFO L276 IsEmpty]: Start isEmpty. Operand 3732 states and 14448 transitions. [2021-10-06 16:21:49,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-06 16:21:49,126 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:21:49,127 INFO L512 BasicCegarLoop]: trace histogram [57, 1, 1, 1] [2021-10-06 16:21:49,154 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2021-10-06 16:21:49,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,66 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:21:49,328 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:21:49,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:21:49,328 INFO L82 PathProgramCache]: Analyzing trace with hash 2016296930, now seen corresponding path program 57 times [2021-10-06 16:21:49,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:21:49,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077959832] [2021-10-06 16:21:49,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:21:49,329 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:21:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:21:50,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:21:50,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:21:50,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077959832] [2021-10-06 16:21:50,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077959832] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:50,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54317428] [2021-10-06 16:21:50,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:21:50,752 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:21:50,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:21:50,753 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:21:50,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-10-06 16:21:51,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2021-10-06 16:21:51,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:21:51,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 60 conjunts are in the unsatisfiable core [2021-10-06 16:21:51,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:21:51,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:21:51,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54317428] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:51,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:21:51,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 59 [2021-10-06 16:21:51,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686925819] [2021-10-06 16:21:51,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2021-10-06 16:21:51,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:21:51,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-10-06 16:21:51,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2021-10-06 16:21:51,567 INFO L87 Difference]: Start difference. First operand 3732 states and 14448 transitions. Second operand has 61 states, 60 states have (on average 1.05) internal successors, (63), 60 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:53,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:21:53,329 INFO L93 Difference]: Finished difference Result 8144 states and 31848 transitions. [2021-10-06 16:21:53,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-10-06 16:21:53,330 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 1.05) internal successors, (63), 60 states have internal predecessors, (63), 0 states have call successors, (0), 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 60 [2021-10-06 16:21:53,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:21:53,351 INFO L225 Difference]: With dead ends: 8144 [2021-10-06 16:21:53,351 INFO L226 Difference]: Without dead ends: 6984 [2021-10-06 16:21:53,352 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1296.3ms TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2021-10-06 16:21:53,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6984 states. [2021-10-06 16:21:53,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6984 to 3792. [2021-10-06 16:21:53,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3792 states, 3777 states have (on average 3.8866825522901776) internal successors, (14680), 3791 states have internal predecessors, (14680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:53,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3792 states to 3792 states and 14680 transitions. [2021-10-06 16:21:53,516 INFO L78 Accepts]: Start accepts. Automaton has 3792 states and 14680 transitions. Word has length 60 [2021-10-06 16:21:53,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:21:53,517 INFO L470 AbstractCegarLoop]: Abstraction has 3792 states and 14680 transitions. [2021-10-06 16:21:53,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 1.05) internal successors, (63), 60 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:53,517 INFO L276 IsEmpty]: Start isEmpty. Operand 3792 states and 14680 transitions. [2021-10-06 16:21:53,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-10-06 16:21:53,523 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:21:53,523 INFO L512 BasicCegarLoop]: trace histogram [58, 1, 1, 1] [2021-10-06 16:21:53,550 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2021-10-06 16:21:53,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,67 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:21:53,724 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:21:53,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:21:53,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1919304007, now seen corresponding path program 58 times [2021-10-06 16:21:53,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:21:53,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899048607] [2021-10-06 16:21:53,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:21:53,726 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:21:53,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:21:55,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:21:55,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:21:55,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899048607] [2021-10-06 16:21:55,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899048607] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:55,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413633461] [2021-10-06 16:21:55,319 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 16:21:55,320 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:21:55,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:21:55,321 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:21:55,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2021-10-06 16:21:55,964 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 16:21:55,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:21:55,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 61 conjunts are in the unsatisfiable core [2021-10-06 16:21:55,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:21:56,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:21:56,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413633461] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:56,116 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:21:56,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 60 [2021-10-06 16:21:56,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015990404] [2021-10-06 16:21:56,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2021-10-06 16:21:56,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:21:56,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-10-06 16:21:56,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2021-10-06 16:21:56,119 INFO L87 Difference]: Start difference. First operand 3792 states and 14680 transitions. Second operand has 62 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 61 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:57,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:21:57,773 INFO L93 Difference]: Finished difference Result 8280 states and 32381 transitions. [2021-10-06 16:21:57,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-10-06 16:21:57,773 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 61 states have internal predecessors, (64), 0 states have call successors, (0), 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 61 [2021-10-06 16:21:57,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:21:57,795 INFO L225 Difference]: With dead ends: 8280 [2021-10-06 16:21:57,795 INFO L226 Difference]: Without dead ends: 7100 [2021-10-06 16:21:57,795 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1448.2ms TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2021-10-06 16:21:57,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7100 states. [2021-10-06 16:21:57,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7100 to 3852. [2021-10-06 16:21:57,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3852 states, 3837 states have (on average 3.886369559551733) internal successors, (14912), 3851 states have internal predecessors, (14912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:57,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3852 states to 3852 states and 14912 transitions. [2021-10-06 16:21:57,889 INFO L78 Accepts]: Start accepts. Automaton has 3852 states and 14912 transitions. Word has length 61 [2021-10-06 16:21:57,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:21:57,889 INFO L470 AbstractCegarLoop]: Abstraction has 3852 states and 14912 transitions. [2021-10-06 16:21:57,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 61 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:57,889 INFO L276 IsEmpty]: Start isEmpty. Operand 3852 states and 14912 transitions. [2021-10-06 16:21:57,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-06 16:21:57,895 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:21:57,896 INFO L512 BasicCegarLoop]: trace histogram [59, 1, 1, 1] [2021-10-06 16:21:57,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2021-10-06 16:21:58,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2021-10-06 16:21:58,100 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:21:58,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:21:58,101 INFO L82 PathProgramCache]: Analyzing trace with hash 631118530, now seen corresponding path program 59 times [2021-10-06 16:21:58,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:21:58,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730351575] [2021-10-06 16:21:58,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:21:58,102 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:21:58,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:21:59,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:21:59,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:21:59,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730351575] [2021-10-06 16:21:59,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730351575] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:59,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691488068] [2021-10-06 16:21:59,731 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 16:21:59,731 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:21:59,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:21:59,732 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:21:59,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2021-10-06 16:22:00,439 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2021-10-06 16:22:00,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:00,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 62 conjunts are in the unsatisfiable core [2021-10-06 16:22:00,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:00,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:00,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691488068] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:00,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:00,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 61 [2021-10-06 16:22:00,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042622064] [2021-10-06 16:22:00,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2021-10-06 16:22:00,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:00,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-10-06 16:22:00,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2021-10-06 16:22:00,609 INFO L87 Difference]: Start difference. First operand 3852 states and 14912 transitions. Second operand has 63 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 62 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:02,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:02,593 INFO L93 Difference]: Finished difference Result 8416 states and 32914 transitions. [2021-10-06 16:22:02,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-10-06 16:22:02,593 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 62 states have internal predecessors, (65), 0 states have call successors, (0), 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 62 [2021-10-06 16:22:02,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:02,616 INFO L225 Difference]: With dead ends: 8416 [2021-10-06 16:22:02,616 INFO L226 Difference]: Without dead ends: 7216 [2021-10-06 16:22:02,617 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1499.7ms TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2021-10-06 16:22:02,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7216 states. [2021-10-06 16:22:02,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7216 to 3912. [2021-10-06 16:22:02,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3912 states, 3897 states have (on average 3.886066204772902) internal successors, (15144), 3911 states have internal predecessors, (15144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:02,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3912 states to 3912 states and 15144 transitions. [2021-10-06 16:22:02,717 INFO L78 Accepts]: Start accepts. Automaton has 3912 states and 15144 transitions. Word has length 62 [2021-10-06 16:22:02,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:02,718 INFO L470 AbstractCegarLoop]: Abstraction has 3912 states and 15144 transitions. [2021-10-06 16:22:02,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 62 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:02,718 INFO L276 IsEmpty]: Start isEmpty. Operand 3912 states and 15144 transitions. [2021-10-06 16:22:02,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-06 16:22:02,724 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:02,725 INFO L512 BasicCegarLoop]: trace histogram [60, 1, 1, 1] [2021-10-06 16:22:02,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2021-10-06 16:22:02,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,69 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:02,931 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:22:02,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:02,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1910161447, now seen corresponding path program 60 times [2021-10-06 16:22:02,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:02,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301567042] [2021-10-06 16:22:02,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:02,932 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:02,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:04,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:04,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:04,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301567042] [2021-10-06 16:22:04,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301567042] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:04,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741143726] [2021-10-06 16:22:04,641 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 16:22:04,641 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:04,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:04,643 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:22:04,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2021-10-06 16:22:05,393 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-10-06 16:22:05,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:05,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 63 conjunts are in the unsatisfiable core [2021-10-06 16:22:05,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:05,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:05,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741143726] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:05,577 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:05,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 62 [2021-10-06 16:22:05,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265796845] [2021-10-06 16:22:05,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-10-06 16:22:05,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:05,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-10-06 16:22:05,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2021-10-06 16:22:05,580 INFO L87 Difference]: Start difference. First operand 3912 states and 15144 transitions. Second operand has 64 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 63 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:07,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:07,621 INFO L93 Difference]: Finished difference Result 8552 states and 33447 transitions. [2021-10-06 16:22:07,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-10-06 16:22:07,621 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 63 states have internal predecessors, (66), 0 states have call successors, (0), 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 63 [2021-10-06 16:22:07,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:07,644 INFO L225 Difference]: With dead ends: 8552 [2021-10-06 16:22:07,644 INFO L226 Difference]: Without dead ends: 7332 [2021-10-06 16:22:07,645 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1574.9ms TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2021-10-06 16:22:07,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7332 states. [2021-10-06 16:22:07,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7332 to 3972. [2021-10-06 16:22:07,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3972 states, 3957 states have (on average 3.885772049532474) internal successors, (15376), 3971 states have internal predecessors, (15376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:07,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3972 states to 3972 states and 15376 transitions. [2021-10-06 16:22:07,750 INFO L78 Accepts]: Start accepts. Automaton has 3972 states and 15376 transitions. Word has length 63 [2021-10-06 16:22:07,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:07,750 INFO L470 AbstractCegarLoop]: Abstraction has 3972 states and 15376 transitions. [2021-10-06 16:22:07,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 63 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:07,751 INFO L276 IsEmpty]: Start isEmpty. Operand 3972 states and 15376 transitions. [2021-10-06 16:22:07,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-10-06 16:22:07,757 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:07,757 INFO L512 BasicCegarLoop]: trace histogram [61, 1, 1, 1] [2021-10-06 16:22:07,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2021-10-06 16:22:07,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2021-10-06 16:22:07,958 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:22:07,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:07,959 INFO L82 PathProgramCache]: Analyzing trace with hash 914537890, now seen corresponding path program 61 times [2021-10-06 16:22:07,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:07,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754965441] [2021-10-06 16:22:07,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:07,960 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:07,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:09,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:09,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:09,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754965441] [2021-10-06 16:22:09,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754965441] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:09,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946870495] [2021-10-06 16:22:09,688 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 16:22:09,688 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:09,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:09,689 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:22:09,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2021-10-06 16:22:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:10,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 64 conjunts are in the unsatisfiable core [2021-10-06 16:22:10,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:10,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:10,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946870495] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:10,558 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:10,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 63 [2021-10-06 16:22:10,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163595531] [2021-10-06 16:22:10,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2021-10-06 16:22:10,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:10,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-10-06 16:22:10,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2021-10-06 16:22:10,560 INFO L87 Difference]: Start difference. First operand 3972 states and 15376 transitions. Second operand has 65 states, 64 states have (on average 1.046875) internal successors, (67), 64 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:12,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:12,422 INFO L93 Difference]: Finished difference Result 8688 states and 33980 transitions. [2021-10-06 16:22:12,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-10-06 16:22:12,423 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 64 states have (on average 1.046875) internal successors, (67), 64 states have internal predecessors, (67), 0 states have call successors, (0), 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 64 [2021-10-06 16:22:12,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:12,447 INFO L225 Difference]: With dead ends: 8688 [2021-10-06 16:22:12,447 INFO L226 Difference]: Without dead ends: 7448 [2021-10-06 16:22:12,448 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1594.8ms TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2021-10-06 16:22:12,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7448 states. [2021-10-06 16:22:12,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7448 to 4032. [2021-10-06 16:22:12,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4032 states, 4017 states have (on average 3.8854866816031866) internal successors, (15608), 4031 states have internal predecessors, (15608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:12,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4032 states to 4032 states and 15608 transitions. [2021-10-06 16:22:12,553 INFO L78 Accepts]: Start accepts. Automaton has 4032 states and 15608 transitions. Word has length 64 [2021-10-06 16:22:12,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:12,553 INFO L470 AbstractCegarLoop]: Abstraction has 4032 states and 15608 transitions. [2021-10-06 16:22:12,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 64 states have (on average 1.046875) internal successors, (67), 64 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:12,553 INFO L276 IsEmpty]: Start isEmpty. Operand 4032 states and 15608 transitions. [2021-10-06 16:22:12,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-06 16:22:12,560 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:12,560 INFO L512 BasicCegarLoop]: trace histogram [62, 1, 1, 1] [2021-10-06 16:22:12,588 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2021-10-06 16:22:12,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,71 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:12,761 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:22:12,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:12,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1714095879, now seen corresponding path program 62 times [2021-10-06 16:22:12,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:12,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050724828] [2021-10-06 16:22:12,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:12,763 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:12,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:14,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:14,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:14,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050724828] [2021-10-06 16:22:14,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050724828] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:14,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753488274] [2021-10-06 16:22:14,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:22:14,593 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:14,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:14,596 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:22:14,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2021-10-06 16:22:15,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:22:15,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:15,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 65 conjunts are in the unsatisfiable core [2021-10-06 16:22:15,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:15,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:15,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753488274] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:15,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:15,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 64 [2021-10-06 16:22:15,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457835669] [2021-10-06 16:22:15,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-10-06 16:22:15,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:15,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-10-06 16:22:15,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2021-10-06 16:22:15,523 INFO L87 Difference]: Start difference. First operand 4032 states and 15608 transitions. Second operand has 66 states, 65 states have (on average 1.0461538461538462) internal successors, (68), 65 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:17,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:17,824 INFO L93 Difference]: Finished difference Result 8824 states and 34513 transitions. [2021-10-06 16:22:17,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-10-06 16:22:17,825 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 1.0461538461538462) internal successors, (68), 65 states have internal predecessors, (68), 0 states have call successors, (0), 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 65 [2021-10-06 16:22:17,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:17,851 INFO L225 Difference]: With dead ends: 8824 [2021-10-06 16:22:17,851 INFO L226 Difference]: Without dead ends: 7564 [2021-10-06 16:22:17,851 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1683.1ms TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2021-10-06 16:22:17,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7564 states. [2021-10-06 16:22:17,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7564 to 4092. [2021-10-06 16:22:17,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4092 states, 4077 states have (on average 3.8852097130242824) internal successors, (15840), 4091 states have internal predecessors, (15840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:17,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4092 states to 4092 states and 15840 transitions. [2021-10-06 16:22:17,952 INFO L78 Accepts]: Start accepts. Automaton has 4092 states and 15840 transitions. Word has length 65 [2021-10-06 16:22:17,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:17,952 INFO L470 AbstractCegarLoop]: Abstraction has 4092 states and 15840 transitions. [2021-10-06 16:22:17,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 65 states have (on average 1.0461538461538462) internal successors, (68), 65 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:17,952 INFO L276 IsEmpty]: Start isEmpty. Operand 4092 states and 15840 transitions. [2021-10-06 16:22:17,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-10-06 16:22:17,959 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:17,959 INFO L512 BasicCegarLoop]: trace histogram [63, 1, 1, 1] [2021-10-06 16:22:17,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2021-10-06 16:22:18,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-10-06 16:22:18,160 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:22:18,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:18,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1597364094, now seen corresponding path program 63 times [2021-10-06 16:22:18,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:18,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268185115] [2021-10-06 16:22:18,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:18,162 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:20,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:20,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:20,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268185115] [2021-10-06 16:22:20,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268185115] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:20,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880934102] [2021-10-06 16:22:20,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:22:20,032 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:20,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:20,033 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:22:20,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2021-10-06 16:22:20,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2021-10-06 16:22:20,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:20,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 66 conjunts are in the unsatisfiable core [2021-10-06 16:22:20,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:21,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:21,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880934102] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:21,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:21,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 65 [2021-10-06 16:22:21,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005779235] [2021-10-06 16:22:21,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2021-10-06 16:22:21,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:21,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-10-06 16:22:21,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2021-10-06 16:22:21,072 INFO L87 Difference]: Start difference. First operand 4092 states and 15840 transitions. Second operand has 67 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 66 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:23,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:23,502 INFO L93 Difference]: Finished difference Result 8960 states and 35046 transitions. [2021-10-06 16:22:23,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-10-06 16:22:23,502 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 66 states have internal predecessors, (69), 0 states have call successors, (0), 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 66 [2021-10-06 16:22:23,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:23,527 INFO L225 Difference]: With dead ends: 8960 [2021-10-06 16:22:23,527 INFO L226 Difference]: Without dead ends: 7680 [2021-10-06 16:22:23,528 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1724.4ms TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2021-10-06 16:22:23,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7680 states. [2021-10-06 16:22:23,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7680 to 4152. [2021-10-06 16:22:23,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4152 states, 4137 states have (on average 3.8849407783417935) internal successors, (16072), 4151 states have internal predecessors, (16072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:23,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4152 states to 4152 states and 16072 transitions. [2021-10-06 16:22:23,670 INFO L78 Accepts]: Start accepts. Automaton has 4152 states and 16072 transitions. Word has length 66 [2021-10-06 16:22:23,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:23,671 INFO L470 AbstractCegarLoop]: Abstraction has 4152 states and 16072 transitions. [2021-10-06 16:22:23,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 66 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:23,671 INFO L276 IsEmpty]: Start isEmpty. Operand 4152 states and 16072 transitions. [2021-10-06 16:22:23,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-06 16:22:23,680 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:23,680 INFO L512 BasicCegarLoop]: trace histogram [64, 1, 1, 1] [2021-10-06 16:22:23,715 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2021-10-06 16:22:23,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,73 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:23,894 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:22:23,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:23,894 INFO L82 PathProgramCache]: Analyzing trace with hash 2021321241, now seen corresponding path program 64 times [2021-10-06 16:22:23,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:23,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910230148] [2021-10-06 16:22:23,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:23,895 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:25,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:25,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:25,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910230148] [2021-10-06 16:22:25,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910230148] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:25,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179375012] [2021-10-06 16:22:25,820 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 16:22:25,820 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:25,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:25,822 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:22:25,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2021-10-06 16:22:26,606 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 16:22:26,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:26,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 67 conjunts are in the unsatisfiable core [2021-10-06 16:22:26,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:26,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:26,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179375012] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:26,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:26,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 66 [2021-10-06 16:22:26,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894306707] [2021-10-06 16:22:26,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2021-10-06 16:22:26,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:26,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-10-06 16:22:26,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2021-10-06 16:22:26,784 INFO L87 Difference]: Start difference. First operand 4152 states and 16072 transitions. Second operand has 68 states, 67 states have (on average 1.044776119402985) internal successors, (70), 67 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:28,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:28,927 INFO L93 Difference]: Finished difference Result 9096 states and 35579 transitions. [2021-10-06 16:22:28,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-10-06 16:22:28,928 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 67 states have (on average 1.044776119402985) internal successors, (70), 67 states have internal predecessors, (70), 0 states have call successors, (0), 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 67 [2021-10-06 16:22:28,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:28,951 INFO L225 Difference]: With dead ends: 9096 [2021-10-06 16:22:28,951 INFO L226 Difference]: Without dead ends: 7796 [2021-10-06 16:22:28,951 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1775.2ms TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2021-10-06 16:22:28,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7796 states. [2021-10-06 16:22:29,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7796 to 4212. [2021-10-06 16:22:29,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4212 states, 4197 states have (on average 3.884679532999762) internal successors, (16304), 4211 states have internal predecessors, (16304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:29,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4212 states to 4212 states and 16304 transitions. [2021-10-06 16:22:29,075 INFO L78 Accepts]: Start accepts. Automaton has 4212 states and 16304 transitions. Word has length 67 [2021-10-06 16:22:29,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:29,075 INFO L470 AbstractCegarLoop]: Abstraction has 4212 states and 16304 transitions. [2021-10-06 16:22:29,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 67 states have (on average 1.044776119402985) internal successors, (70), 67 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:29,076 INFO L276 IsEmpty]: Start isEmpty. Operand 4212 states and 16304 transitions. [2021-10-06 16:22:29,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-06 16:22:29,083 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:29,083 INFO L512 BasicCegarLoop]: trace histogram [65, 1, 1, 1] [2021-10-06 16:22:29,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2021-10-06 16:22:29,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,74 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:29,284 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:22:29,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:29,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1763550366, now seen corresponding path program 65 times [2021-10-06 16:22:29,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:29,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101028527] [2021-10-06 16:22:29,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:29,286 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:29,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:31,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:31,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:31,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101028527] [2021-10-06 16:22:31,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101028527] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:31,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752702573] [2021-10-06 16:22:31,227 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 16:22:31,227 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:31,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:31,228 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:22:31,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2021-10-06 16:22:32,054 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2021-10-06 16:22:32,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:32,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 68 conjunts are in the unsatisfiable core [2021-10-06 16:22:32,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:32,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:32,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752702573] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:32,242 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:32,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 67 [2021-10-06 16:22:32,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089287587] [2021-10-06 16:22:32,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2021-10-06 16:22:32,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:32,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-10-06 16:22:32,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2021-10-06 16:22:32,245 INFO L87 Difference]: Start difference. First operand 4212 states and 16304 transitions. Second operand has 69 states, 68 states have (on average 1.0441176470588236) internal successors, (71), 68 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:35,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:35,078 INFO L93 Difference]: Finished difference Result 9232 states and 36112 transitions. [2021-10-06 16:22:35,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-10-06 16:22:35,078 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 68 states have (on average 1.0441176470588236) internal successors, (71), 68 states have internal predecessors, (71), 0 states have call successors, (0), 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 68 [2021-10-06 16:22:35,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:35,102 INFO L225 Difference]: With dead ends: 9232 [2021-10-06 16:22:35,102 INFO L226 Difference]: Without dead ends: 7912 [2021-10-06 16:22:35,103 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1804.6ms TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2021-10-06 16:22:35,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7912 states. [2021-10-06 16:22:35,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7912 to 4272. [2021-10-06 16:22:35,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4272 states, 4257 states have (on average 3.884425651867512) internal successors, (16536), 4271 states have internal predecessors, (16536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:35,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4272 states to 4272 states and 16536 transitions. [2021-10-06 16:22:35,211 INFO L78 Accepts]: Start accepts. Automaton has 4272 states and 16536 transitions. Word has length 68 [2021-10-06 16:22:35,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:35,211 INFO L470 AbstractCegarLoop]: Abstraction has 4272 states and 16536 transitions. [2021-10-06 16:22:35,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 68 states have (on average 1.0441176470588236) internal successors, (71), 68 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:35,211 INFO L276 IsEmpty]: Start isEmpty. Operand 4272 states and 16536 transitions. [2021-10-06 16:22:35,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-10-06 16:22:35,221 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:35,221 INFO L512 BasicCegarLoop]: trace histogram [66, 1, 1, 1] [2021-10-06 16:22:35,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2021-10-06 16:22:35,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,75 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:35,435 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:22:35,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:35,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1164514105, now seen corresponding path program 66 times [2021-10-06 16:22:35,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:35,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227254594] [2021-10-06 16:22:35,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:35,437 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:37,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:37,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:37,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227254594] [2021-10-06 16:22:37,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227254594] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:37,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607256111] [2021-10-06 16:22:37,512 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 16:22:37,513 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:37,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:37,514 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:22:37,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2021-10-06 16:22:38,395 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2021-10-06 16:22:38,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:38,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 667 conjuncts, 69 conjunts are in the unsatisfiable core [2021-10-06 16:22:38,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:38,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:38,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607256111] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:38,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:38,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 68 [2021-10-06 16:22:38,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235861988] [2021-10-06 16:22:38,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2021-10-06 16:22:38,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:38,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-10-06 16:22:38,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2021-10-06 16:22:38,591 INFO L87 Difference]: Start difference. First operand 4272 states and 16536 transitions. Second operand has 70 states, 69 states have (on average 1.0434782608695652) internal successors, (72), 69 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:41,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:41,397 INFO L93 Difference]: Finished difference Result 9368 states and 36645 transitions. [2021-10-06 16:22:41,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-10-06 16:22:41,398 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 1.0434782608695652) internal successors, (72), 69 states have internal predecessors, (72), 0 states have call successors, (0), 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 69 [2021-10-06 16:22:41,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:41,423 INFO L225 Difference]: With dead ends: 9368 [2021-10-06 16:22:41,423 INFO L226 Difference]: Without dead ends: 8028 [2021-10-06 16:22:41,423 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1923.0ms TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2021-10-06 16:22:41,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8028 states. [2021-10-06 16:22:41,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8028 to 4332. [2021-10-06 16:22:41,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4332 states, 4317 states have (on average 3.8841788278897385) internal successors, (16768), 4331 states have internal predecessors, (16768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:41,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4332 states to 4332 states and 16768 transitions. [2021-10-06 16:22:41,532 INFO L78 Accepts]: Start accepts. Automaton has 4332 states and 16768 transitions. Word has length 69 [2021-10-06 16:22:41,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:41,532 INFO L470 AbstractCegarLoop]: Abstraction has 4332 states and 16768 transitions. [2021-10-06 16:22:41,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 69 states have (on average 1.0434782608695652) internal successors, (72), 69 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:41,532 INFO L276 IsEmpty]: Start isEmpty. Operand 4332 states and 16768 transitions. [2021-10-06 16:22:41,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-06 16:22:41,539 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:41,539 INFO L512 BasicCegarLoop]: trace histogram [67, 1, 1, 1] [2021-10-06 16:22:41,568 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2021-10-06 16:22:41,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable83 [2021-10-06 16:22:41,740 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:22:41,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:41,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1740199490, now seen corresponding path program 67 times [2021-10-06 16:22:41,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:41,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786942364] [2021-10-06 16:22:41,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:41,742 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:43,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:43,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:43,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786942364] [2021-10-06 16:22:43,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786942364] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:43,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538545935] [2021-10-06 16:22:43,842 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 16:22:43,842 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:43,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:43,848 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:22:43,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2021-10-06 16:22:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:44,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 70 conjunts are in the unsatisfiable core [2021-10-06 16:22:44,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:44,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:44,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538545935] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:44,876 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:44,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 69 [2021-10-06 16:22:44,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876996689] [2021-10-06 16:22:44,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2021-10-06 16:22:44,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:44,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-10-06 16:22:44,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2021-10-06 16:22:44,879 INFO L87 Difference]: Start difference. First operand 4332 states and 16768 transitions. Second operand has 71 states, 70 states have (on average 1.042857142857143) internal successors, (73), 70 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:47,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:47,411 INFO L93 Difference]: Finished difference Result 9504 states and 37178 transitions. [2021-10-06 16:22:47,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-10-06 16:22:47,412 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 70 states have (on average 1.042857142857143) internal successors, (73), 70 states have internal predecessors, (73), 0 states have call successors, (0), 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 70 [2021-10-06 16:22:47,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:47,438 INFO L225 Difference]: With dead ends: 9504 [2021-10-06 16:22:47,438 INFO L226 Difference]: Without dead ends: 8144 [2021-10-06 16:22:47,439 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1945.8ms TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2021-10-06 16:22:47,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8144 states. [2021-10-06 16:22:47,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8144 to 4392. [2021-10-06 16:22:47,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4392 states, 4377 states have (on average 3.8839387708476125) internal successors, (17000), 4391 states have internal predecessors, (17000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:47,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4392 states to 4392 states and 17000 transitions. [2021-10-06 16:22:47,556 INFO L78 Accepts]: Start accepts. Automaton has 4392 states and 17000 transitions. Word has length 70 [2021-10-06 16:22:47,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:47,556 INFO L470 AbstractCegarLoop]: Abstraction has 4392 states and 17000 transitions. [2021-10-06 16:22:47,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 70 states have (on average 1.042857142857143) internal successors, (73), 70 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:47,556 INFO L276 IsEmpty]: Start isEmpty. Operand 4392 states and 17000 transitions. [2021-10-06 16:22:47,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-06 16:22:47,564 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:47,564 INFO L512 BasicCegarLoop]: trace histogram [68, 1, 1, 1] [2021-10-06 16:22:47,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2021-10-06 16:22:47,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2021-10-06 16:22:47,765 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:22:47,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:47,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1888390055, now seen corresponding path program 68 times [2021-10-06 16:22:47,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:47,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855694122] [2021-10-06 16:22:47,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:47,767 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:47,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:49,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:49,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:49,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855694122] [2021-10-06 16:22:49,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855694122] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:49,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721220594] [2021-10-06 16:22:49,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:22:49,939 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:49,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:49,940 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:22:49,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2021-10-06 16:22:50,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:22:50,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:50,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 71 conjunts are in the unsatisfiable core [2021-10-06 16:22:50,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:50,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:50,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721220594] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:50,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:50,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 70 [2021-10-06 16:22:50,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121081802] [2021-10-06 16:22:50,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2021-10-06 16:22:50,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:50,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-10-06 16:22:50,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2021-10-06 16:22:50,990 INFO L87 Difference]: Start difference. First operand 4392 states and 17000 transitions. Second operand has 72 states, 71 states have (on average 1.0422535211267605) internal successors, (74), 71 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:53,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:53,544 INFO L93 Difference]: Finished difference Result 9640 states and 37711 transitions. [2021-10-06 16:22:53,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-10-06 16:22:53,545 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 1.0422535211267605) internal successors, (74), 71 states have internal predecessors, (74), 0 states have call successors, (0), 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 71 [2021-10-06 16:22:53,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:53,570 INFO L225 Difference]: With dead ends: 9640 [2021-10-06 16:22:53,570 INFO L226 Difference]: Without dead ends: 8260 [2021-10-06 16:22:53,571 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 2029.1ms TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2021-10-06 16:22:53,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8260 states. [2021-10-06 16:22:53,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8260 to 4452. [2021-10-06 16:22:53,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4452 states, 4437 states have (on average 3.8837052062204194) internal successors, (17232), 4451 states have internal predecessors, (17232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:53,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4452 states to 4452 states and 17232 transitions. [2021-10-06 16:22:53,689 INFO L78 Accepts]: Start accepts. Automaton has 4452 states and 17232 transitions. Word has length 71 [2021-10-06 16:22:53,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:53,689 INFO L470 AbstractCegarLoop]: Abstraction has 4452 states and 17232 transitions. [2021-10-06 16:22:53,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 1.0422535211267605) internal successors, (74), 71 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:53,689 INFO L276 IsEmpty]: Start isEmpty. Operand 4452 states and 17232 transitions. [2021-10-06 16:22:53,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-10-06 16:22:53,697 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:53,697 INFO L512 BasicCegarLoop]: trace histogram [69, 1, 1, 1] [2021-10-06 16:22:53,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2021-10-06 16:22:53,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,78 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:53,898 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:22:53,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:53,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1589451042, now seen corresponding path program 69 times [2021-10-06 16:22:53,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:53,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251160435] [2021-10-06 16:22:53,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:53,900 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:53,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:56,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:56,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:56,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251160435] [2021-10-06 16:22:56,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251160435] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:56,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873980020] [2021-10-06 16:22:56,135 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:22:56,136 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:56,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:56,137 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:22:56,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2021-10-06 16:22:57,102 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2021-10-06 16:22:57,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:57,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 72 conjunts are in the unsatisfiable core [2021-10-06 16:22:57,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:57,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:57,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873980020] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:57,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:57,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 71 [2021-10-06 16:22:57,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816439965] [2021-10-06 16:22:57,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2021-10-06 16:22:57,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:57,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-10-06 16:22:57,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2021-10-06 16:22:57,296 INFO L87 Difference]: Start difference. First operand 4452 states and 17232 transitions. Second operand has 73 states, 72 states have (on average 1.0416666666666667) internal successors, (75), 72 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:00,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:23:00,005 INFO L93 Difference]: Finished difference Result 9776 states and 38244 transitions. [2021-10-06 16:23:00,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-10-06 16:23:00,005 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 72 states have (on average 1.0416666666666667) internal successors, (75), 72 states have internal predecessors, (75), 0 states have call successors, (0), 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 72 [2021-10-06 16:23:00,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:23:00,032 INFO L225 Difference]: With dead ends: 9776 [2021-10-06 16:23:00,032 INFO L226 Difference]: Without dead ends: 8376 [2021-10-06 16:23:00,033 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 2071.2ms TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2021-10-06 16:23:00,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8376 states. [2021-10-06 16:23:00,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8376 to 4512. [2021-10-06 16:23:00,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4512 states, 4497 states have (on average 3.8834778741383142) internal successors, (17464), 4511 states have internal predecessors, (17464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:00,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4512 states to 4512 states and 17464 transitions. [2021-10-06 16:23:00,159 INFO L78 Accepts]: Start accepts. Automaton has 4512 states and 17464 transitions. Word has length 72 [2021-10-06 16:23:00,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:23:00,159 INFO L470 AbstractCegarLoop]: Abstraction has 4512 states and 17464 transitions. [2021-10-06 16:23:00,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 72 states have (on average 1.0416666666666667) internal successors, (75), 72 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:00,160 INFO L276 IsEmpty]: Start isEmpty. Operand 4512 states and 17464 transitions. [2021-10-06 16:23:00,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-10-06 16:23:00,167 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:23:00,167 INFO L512 BasicCegarLoop]: trace histogram [70, 1, 1, 1] [2021-10-06 16:23:00,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2021-10-06 16:23:00,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2021-10-06 16:23:00,368 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:23:00,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:23:00,369 INFO L82 PathProgramCache]: Analyzing trace with hash 2028342649, now seen corresponding path program 70 times [2021-10-06 16:23:00,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:23:00,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977874230] [2021-10-06 16:23:00,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:23:00,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:23:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:23:02,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:02,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:23:02,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977874230] [2021-10-06 16:23:02,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977874230] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:02,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656536909] [2021-10-06 16:23:02,667 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 16:23:02,667 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:02,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:23:02,669 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:23:02,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2021-10-06 16:23:03,579 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 16:23:03,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:23:03,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 703 conjuncts, 73 conjunts are in the unsatisfiable core [2021-10-06 16:23:03,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:23:03,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:03,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656536909] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:03,770 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:23:03,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 72 [2021-10-06 16:23:03,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419774836] [2021-10-06 16:23:03,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2021-10-06 16:23:03,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:23:03,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2021-10-06 16:23:03,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2021-10-06 16:23:03,775 INFO L87 Difference]: Start difference. First operand 4512 states and 17464 transitions. Second operand has 74 states, 73 states have (on average 1.0410958904109588) internal successors, (76), 73 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:06,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:23:06,391 INFO L93 Difference]: Finished difference Result 9912 states and 38777 transitions. [2021-10-06 16:23:06,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-10-06 16:23:06,391 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 73 states have (on average 1.0410958904109588) internal successors, (76), 73 states have internal predecessors, (76), 0 states have call successors, (0), 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 73 [2021-10-06 16:23:06,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:23:06,416 INFO L225 Difference]: With dead ends: 9912 [2021-10-06 16:23:06,416 INFO L226 Difference]: Without dead ends: 8492 [2021-10-06 16:23:06,417 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 2145.7ms TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2021-10-06 16:23:06,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8492 states. [2021-10-06 16:23:06,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8492 to 4572. [2021-10-06 16:23:06,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4572 states, 4557 states have (on average 3.8832565284178187) internal successors, (17696), 4571 states have internal predecessors, (17696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:06,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4572 states to 4572 states and 17696 transitions. [2021-10-06 16:23:06,525 INFO L78 Accepts]: Start accepts. Automaton has 4572 states and 17696 transitions. Word has length 73 [2021-10-06 16:23:06,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:23:06,525 INFO L470 AbstractCegarLoop]: Abstraction has 4572 states and 17696 transitions. [2021-10-06 16:23:06,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 73 states have (on average 1.0410958904109588) internal successors, (76), 73 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:06,526 INFO L276 IsEmpty]: Start isEmpty. Operand 4572 states and 17696 transitions. [2021-10-06 16:23:06,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-10-06 16:23:06,533 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:23:06,533 INFO L512 BasicCegarLoop]: trace histogram [71, 1, 1, 1] [2021-10-06 16:23:06,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2021-10-06 16:23:06,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,80 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:06,734 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:23:06,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:23:06,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1545886718, now seen corresponding path program 71 times [2021-10-06 16:23:06,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:23:06,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222876655] [2021-10-06 16:23:06,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:23:06,735 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:23:06,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:23:09,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:09,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:23:09,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222876655] [2021-10-06 16:23:09,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222876655] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:09,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078638304] [2021-10-06 16:23:09,081 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 16:23:09,081 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:09,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:23:09,083 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:23:09,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2021-10-06 16:23:10,061 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2021-10-06 16:23:10,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:23:10,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 712 conjuncts, 74 conjunts are in the unsatisfiable core [2021-10-06 16:23:10,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:23:10,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:10,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078638304] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:10,260 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:23:10,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 73 [2021-10-06 16:23:10,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614937339] [2021-10-06 16:23:10,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2021-10-06 16:23:10,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:23:10,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-10-06 16:23:10,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2021-10-06 16:23:10,263 INFO L87 Difference]: Start difference. First operand 4572 states and 17696 transitions. Second operand has 75 states, 74 states have (on average 1.0405405405405406) internal successors, (77), 74 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:13,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:23:13,260 INFO L93 Difference]: Finished difference Result 10048 states and 39310 transitions. [2021-10-06 16:23:13,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-10-06 16:23:13,260 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 74 states have (on average 1.0405405405405406) internal successors, (77), 74 states have internal predecessors, (77), 0 states have call successors, (0), 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 74 [2021-10-06 16:23:13,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:23:13,288 INFO L225 Difference]: With dead ends: 10048 [2021-10-06 16:23:13,288 INFO L226 Difference]: Without dead ends: 8608 [2021-10-06 16:23:13,289 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 2192.4ms TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2021-10-06 16:23:13,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8608 states. [2021-10-06 16:23:13,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8608 to 4632. [2021-10-06 16:23:13,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4632 states, 4617 states have (on average 3.8830409356725144) internal successors, (17928), 4631 states have internal predecessors, (17928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:13,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4632 states to 4632 states and 17928 transitions. [2021-10-06 16:23:13,412 INFO L78 Accepts]: Start accepts. Automaton has 4632 states and 17928 transitions. Word has length 74 [2021-10-06 16:23:13,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:23:13,412 INFO L470 AbstractCegarLoop]: Abstraction has 4632 states and 17928 transitions. [2021-10-06 16:23:13,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 74 states have (on average 1.0405405405405406) internal successors, (77), 74 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:13,413 INFO L276 IsEmpty]: Start isEmpty. Operand 4632 states and 17928 transitions. [2021-10-06 16:23:13,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-06 16:23:13,420 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:23:13,420 INFO L512 BasicCegarLoop]: trace histogram [72, 1, 1, 1] [2021-10-06 16:23:13,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2021-10-06 16:23:13,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,81 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:13,621 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:23:13,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:23:13,622 INFO L82 PathProgramCache]: Analyzing trace with hash -677847399, now seen corresponding path program 72 times [2021-10-06 16:23:13,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:23:13,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108790256] [2021-10-06 16:23:13,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:23:13,623 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:23:13,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:23:16,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:16,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:23:16,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108790256] [2021-10-06 16:23:16,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108790256] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:16,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553783150] [2021-10-06 16:23:16,038 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 16:23:16,038 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:16,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:23:16,039 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:23:16,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2021-10-06 16:23:17,041 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-10-06 16:23:17,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:23:17,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 75 conjunts are in the unsatisfiable core [2021-10-06 16:23:17,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:23:17,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:17,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553783150] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:17,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:23:17,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 74 [2021-10-06 16:23:17,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829196437] [2021-10-06 16:23:17,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2021-10-06 16:23:17,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:23:17,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-10-06 16:23:17,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2021-10-06 16:23:17,252 INFO L87 Difference]: Start difference. First operand 4632 states and 17928 transitions. Second operand has 76 states, 75 states have (on average 1.04) internal successors, (78), 75 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:20,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:23:20,271 INFO L93 Difference]: Finished difference Result 10184 states and 39843 transitions. [2021-10-06 16:23:20,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-10-06 16:23:20,272 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 75 states have (on average 1.04) internal successors, (78), 75 states have internal predecessors, (78), 0 states have call successors, (0), 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 75 [2021-10-06 16:23:20,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:23:20,297 INFO L225 Difference]: With dead ends: 10184 [2021-10-06 16:23:20,298 INFO L226 Difference]: Without dead ends: 8724 [2021-10-06 16:23:20,298 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 2252.9ms TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2021-10-06 16:23:20,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8724 states. [2021-10-06 16:23:20,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8724 to 4692. [2021-10-06 16:23:20,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4692 states, 4677 states have (on average 3.8828308744921958) internal successors, (18160), 4691 states have internal predecessors, (18160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:20,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4692 states to 4692 states and 18160 transitions. [2021-10-06 16:23:20,410 INFO L78 Accepts]: Start accepts. Automaton has 4692 states and 18160 transitions. Word has length 75 [2021-10-06 16:23:20,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:23:20,410 INFO L470 AbstractCegarLoop]: Abstraction has 4692 states and 18160 transitions. [2021-10-06 16:23:20,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 75 states have (on average 1.04) internal successors, (78), 75 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:20,410 INFO L276 IsEmpty]: Start isEmpty. Operand 4692 states and 18160 transitions. [2021-10-06 16:23:20,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-10-06 16:23:20,417 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:23:20,417 INFO L512 BasicCegarLoop]: trace histogram [73, 1, 1, 1] [2021-10-06 16:23:20,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2021-10-06 16:23:20,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2021-10-06 16:23:20,618 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:23:20,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:23:20,619 INFO L82 PathProgramCache]: Analyzing trace with hash 461567714, now seen corresponding path program 73 times [2021-10-06 16:23:20,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:23:20,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380364126] [2021-10-06 16:23:20,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:23:20,620 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:23:20,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:23:23,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:23,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:23:23,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380364126] [2021-10-06 16:23:23,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380364126] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:23,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333574480] [2021-10-06 16:23:23,017 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 16:23:23,017 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:23,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:23:23,019 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:23:23,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2021-10-06 16:23:23,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:23:24,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 76 conjunts are in the unsatisfiable core [2021-10-06 16:23:24,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:23:24,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:24,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333574480] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:24,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:23:24,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 75 [2021-10-06 16:23:24,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382383857] [2021-10-06 16:23:24,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2021-10-06 16:23:24,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:23:24,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-10-06 16:23:24,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2021-10-06 16:23:24,193 INFO L87 Difference]: Start difference. First operand 4692 states and 18160 transitions. Second operand has 77 states, 76 states have (on average 1.0394736842105263) internal successors, (79), 76 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:27,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:23:27,468 INFO L93 Difference]: Finished difference Result 10320 states and 40376 transitions. [2021-10-06 16:23:27,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-10-06 16:23:27,468 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 76 states have (on average 1.0394736842105263) internal successors, (79), 76 states have internal predecessors, (79), 0 states have call successors, (0), 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 76 [2021-10-06 16:23:27,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:23:27,496 INFO L225 Difference]: With dead ends: 10320 [2021-10-06 16:23:27,496 INFO L226 Difference]: Without dead ends: 8840 [2021-10-06 16:23:27,496 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 2243.0ms TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2021-10-06 16:23:27,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8840 states. [2021-10-06 16:23:27,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8840 to 4752. [2021-10-06 16:23:27,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4752 states, 4737 states have (on average 3.8826261346843993) internal successors, (18392), 4751 states have internal predecessors, (18392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:27,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4752 states to 4752 states and 18392 transitions. [2021-10-06 16:23:27,622 INFO L78 Accepts]: Start accepts. Automaton has 4752 states and 18392 transitions. Word has length 76 [2021-10-06 16:23:27,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:23:27,623 INFO L470 AbstractCegarLoop]: Abstraction has 4752 states and 18392 transitions. [2021-10-06 16:23:27,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 76 states have (on average 1.0394736842105263) internal successors, (79), 76 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:27,623 INFO L276 IsEmpty]: Start isEmpty. Operand 4752 states and 18392 transitions. [2021-10-06 16:23:27,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-06 16:23:27,630 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:23:27,631 INFO L512 BasicCegarLoop]: trace histogram [74, 1, 1, 1] [2021-10-06 16:23:27,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2021-10-06 16:23:27,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,83 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:27,832 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:23:27,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:23:27,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1423697849, now seen corresponding path program 74 times [2021-10-06 16:23:27,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:23:27,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077287900] [2021-10-06 16:23:27,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:23:27,834 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:23:27,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:23:30,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:30,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:23:30,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077287900] [2021-10-06 16:23:30,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077287900] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:30,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475205010] [2021-10-06 16:23:30,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:23:30,395 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:30,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:23:30,397 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:23:30,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2021-10-06 16:23:31,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:23:31,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:23:31,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 739 conjuncts, 77 conjunts are in the unsatisfiable core [2021-10-06 16:23:31,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:23:31,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:31,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475205010] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:31,591 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:23:31,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 76 [2021-10-06 16:23:31,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915068729] [2021-10-06 16:23:31,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2021-10-06 16:23:31,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:23:31,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-10-06 16:23:31,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2021-10-06 16:23:31,594 INFO L87 Difference]: Start difference. First operand 4752 states and 18392 transitions. Second operand has 78 states, 77 states have (on average 1.0389610389610389) internal successors, (80), 77 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:34,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:23:34,788 INFO L93 Difference]: Finished difference Result 10456 states and 40909 transitions. [2021-10-06 16:23:34,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-10-06 16:23:34,788 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 77 states have (on average 1.0389610389610389) internal successors, (80), 77 states have internal predecessors, (80), 0 states have call successors, (0), 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 77 [2021-10-06 16:23:34,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:23:34,816 INFO L225 Difference]: With dead ends: 10456 [2021-10-06 16:23:34,816 INFO L226 Difference]: Without dead ends: 8956 [2021-10-06 16:23:34,816 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 2402.3ms TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2021-10-06 16:23:34,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8956 states. [2021-10-06 16:23:34,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8956 to 4812. [2021-10-06 16:23:34,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4812 states, 4797 states have (on average 3.882426516572858) internal successors, (18624), 4811 states have internal predecessors, (18624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:34,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4812 states to 4812 states and 18624 transitions. [2021-10-06 16:23:34,934 INFO L78 Accepts]: Start accepts. Automaton has 4812 states and 18624 transitions. Word has length 77 [2021-10-06 16:23:34,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:23:34,934 INFO L470 AbstractCegarLoop]: Abstraction has 4812 states and 18624 transitions. [2021-10-06 16:23:34,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 77 states have (on average 1.0389610389610389) internal successors, (80), 77 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:34,934 INFO L276 IsEmpty]: Start isEmpty. Operand 4812 states and 18624 transitions. [2021-10-06 16:23:34,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-06 16:23:34,942 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:23:34,942 INFO L512 BasicCegarLoop]: trace histogram [75, 1, 1, 1] [2021-10-06 16:23:34,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2021-10-06 16:23:35,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,84 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:35,143 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:23:35,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:23:35,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1184960962, now seen corresponding path program 75 times [2021-10-06 16:23:35,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:23:35,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574119457] [2021-10-06 16:23:35,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:23:35,144 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:23:35,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:23:37,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:37,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:23:37,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574119457] [2021-10-06 16:23:37,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574119457] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:37,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105588810] [2021-10-06 16:23:37,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:23:37,684 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:37,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:23:37,687 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:23:37,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2021-10-06 16:23:38,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2021-10-06 16:23:38,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:23:38,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 78 conjunts are in the unsatisfiable core [2021-10-06 16:23:38,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:23:38,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:38,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105588810] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:38,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:23:38,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 77 [2021-10-06 16:23:38,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185378036] [2021-10-06 16:23:38,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2021-10-06 16:23:38,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:23:38,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-10-06 16:23:38,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2021-10-06 16:23:38,962 INFO L87 Difference]: Start difference. First operand 4812 states and 18624 transitions. Second operand has 79 states, 78 states have (on average 1.0384615384615385) internal successors, (81), 78 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:42,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:23:42,203 INFO L93 Difference]: Finished difference Result 10592 states and 41442 transitions. [2021-10-06 16:23:42,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-10-06 16:23:42,203 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 78 states have (on average 1.0384615384615385) internal successors, (81), 78 states have internal predecessors, (81), 0 states have call successors, (0), 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 78 [2021-10-06 16:23:42,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:23:42,232 INFO L225 Difference]: With dead ends: 10592 [2021-10-06 16:23:42,232 INFO L226 Difference]: Without dead ends: 9072 [2021-10-06 16:23:42,232 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 2375.2ms TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2021-10-06 16:23:42,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9072 states. [2021-10-06 16:23:42,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9072 to 4872. [2021-10-06 16:23:42,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4872 states, 4857 states have (on average 3.8822318303479513) internal successors, (18856), 4871 states have internal predecessors, (18856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:42,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4872 states to 4872 states and 18856 transitions. [2021-10-06 16:23:42,356 INFO L78 Accepts]: Start accepts. Automaton has 4872 states and 18856 transitions. Word has length 78 [2021-10-06 16:23:42,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:23:42,356 INFO L470 AbstractCegarLoop]: Abstraction has 4872 states and 18856 transitions. [2021-10-06 16:23:42,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 78 states have (on average 1.0384615384615385) internal successors, (81), 78 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:42,357 INFO L276 IsEmpty]: Start isEmpty. Operand 4872 states and 18856 transitions. [2021-10-06 16:23:42,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-10-06 16:23:42,364 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:23:42,364 INFO L512 BasicCegarLoop]: trace histogram [76, 1, 1, 1] [2021-10-06 16:23:42,395 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2021-10-06 16:23:42,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable92 [2021-10-06 16:23:42,565 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:23:42,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:23:42,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1920915239, now seen corresponding path program 76 times [2021-10-06 16:23:42,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:23:42,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271484770] [2021-10-06 16:23:42,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:23:42,567 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:23:42,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:23:45,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:45,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:23:45,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271484770] [2021-10-06 16:23:45,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271484770] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:45,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416176874] [2021-10-06 16:23:45,268 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 16:23:45,268 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:45,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:23:45,271 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:23:45,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2021-10-06 16:23:46,322 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 16:23:46,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:23:46,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 79 conjunts are in the unsatisfiable core [2021-10-06 16:23:46,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:23:46,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:46,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416176874] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:46,538 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:23:46,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 78 [2021-10-06 16:23:46,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530133131] [2021-10-06 16:23:46,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2021-10-06 16:23:46,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:23:46,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-10-06 16:23:46,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2021-10-06 16:23:46,542 INFO L87 Difference]: Start difference. First operand 4872 states and 18856 transitions. Second operand has 80 states, 79 states have (on average 1.0379746835443038) internal successors, (82), 79 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:50,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:23:50,101 INFO L93 Difference]: Finished difference Result 10728 states and 41975 transitions. [2021-10-06 16:23:50,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-10-06 16:23:50,101 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 79 states have (on average 1.0379746835443038) internal successors, (82), 79 states have internal predecessors, (82), 0 states have call successors, (0), 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 79 [2021-10-06 16:23:50,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:23:50,129 INFO L225 Difference]: With dead ends: 10728 [2021-10-06 16:23:50,129 INFO L226 Difference]: Without dead ends: 9188 [2021-10-06 16:23:50,129 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 2534.7ms TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2021-10-06 16:23:50,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9188 states. [2021-10-06 16:23:50,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9188 to 4932. [2021-10-06 16:23:50,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4932 states, 4917 states have (on average 3.8820418954647145) internal successors, (19088), 4931 states have internal predecessors, (19088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:50,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4932 states to 4932 states and 19088 transitions. [2021-10-06 16:23:50,257 INFO L78 Accepts]: Start accepts. Automaton has 4932 states and 19088 transitions. Word has length 79 [2021-10-06 16:23:50,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:23:50,257 INFO L470 AbstractCegarLoop]: Abstraction has 4932 states and 19088 transitions. [2021-10-06 16:23:50,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 79 states have (on average 1.0379746835443038) internal successors, (82), 79 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:50,258 INFO L276 IsEmpty]: Start isEmpty. Operand 4932 states and 19088 transitions. [2021-10-06 16:23:50,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-06 16:23:50,265 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:23:50,265 INFO L512 BasicCegarLoop]: trace histogram [77, 1, 1, 1] [2021-10-06 16:23:50,294 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2021-10-06 16:23:50,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,86 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:50,466 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:23:50,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:23:50,467 INFO L82 PathProgramCache]: Analyzing trace with hash 581170338, now seen corresponding path program 77 times [2021-10-06 16:23:50,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:23:50,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747896681] [2021-10-06 16:23:50,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:23:50,468 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:23:50,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:23:53,172 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:53,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:23:53,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747896681] [2021-10-06 16:23:53,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747896681] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:53,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916639411] [2021-10-06 16:23:53,174 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 16:23:53,174 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:53,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:23:53,175 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:23:53,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2021-10-06 16:23:54,265 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2021-10-06 16:23:54,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:23:54,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 80 conjunts are in the unsatisfiable core [2021-10-06 16:23:54,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:23:54,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:54,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916639411] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:54,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:23:54,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 79 [2021-10-06 16:23:54,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430854400] [2021-10-06 16:23:54,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2021-10-06 16:23:54,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:23:54,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-10-06 16:23:54,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2021-10-06 16:23:54,483 INFO L87 Difference]: Start difference. First operand 4932 states and 19088 transitions. Second operand has 81 states, 80 states have (on average 1.0375) internal successors, (83), 80 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:58,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:23:58,457 INFO L93 Difference]: Finished difference Result 10864 states and 42508 transitions. [2021-10-06 16:23:58,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-10-06 16:23:58,457 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 80 states have (on average 1.0375) internal successors, (83), 80 states have internal predecessors, (83), 0 states have call successors, (0), 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 80 [2021-10-06 16:23:58,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:23:58,487 INFO L225 Difference]: With dead ends: 10864 [2021-10-06 16:23:58,487 INFO L226 Difference]: Without dead ends: 9304 [2021-10-06 16:23:58,488 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 2537.3ms TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2021-10-06 16:23:58,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9304 states. [2021-10-06 16:23:58,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9304 to 4992. [2021-10-06 16:23:58,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4992 states, 4977 states have (on average 3.8818565400843883) internal successors, (19320), 4991 states have internal predecessors, (19320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:58,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4992 states to 4992 states and 19320 transitions. [2021-10-06 16:23:58,615 INFO L78 Accepts]: Start accepts. Automaton has 4992 states and 19320 transitions. Word has length 80 [2021-10-06 16:23:58,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:23:58,615 INFO L470 AbstractCegarLoop]: Abstraction has 4992 states and 19320 transitions. [2021-10-06 16:23:58,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 80 states have (on average 1.0375) internal successors, (83), 80 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:58,615 INFO L276 IsEmpty]: Start isEmpty. Operand 4992 states and 19320 transitions. [2021-10-06 16:23:58,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-10-06 16:23:58,624 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:23:58,624 INFO L512 BasicCegarLoop]: trace histogram [78, 1, 1, 1] [2021-10-06 16:23:58,653 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2021-10-06 16:23:58,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,87 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:58,824 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:23:58,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:23:58,825 INFO L82 PathProgramCache]: Analyzing trace with hash 836411897, now seen corresponding path program 78 times [2021-10-06 16:23:58,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:23:58,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641154117] [2021-10-06 16:23:58,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:23:58,826 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:23:58,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:24:01,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:24:01,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:24:01,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641154117] [2021-10-06 16:24:01,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641154117] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:24:01,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773910546] [2021-10-06 16:24:01,671 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 16:24:01,671 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:24:01,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:24:01,673 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:24:01,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2021-10-06 16:24:02,866 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2021-10-06 16:24:02,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:24:02,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 81 conjunts are in the unsatisfiable core [2021-10-06 16:24:02,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:24:03,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:24:03,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773910546] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:24:03,092 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:24:03,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 80 [2021-10-06 16:24:03,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328359705] [2021-10-06 16:24:03,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2021-10-06 16:24:03,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:24:03,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-10-06 16:24:03,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2021-10-06 16:24:03,094 INFO L87 Difference]: Start difference. First operand 4992 states and 19320 transitions. Second operand has 82 states, 81 states have (on average 1.037037037037037) internal successors, (84), 81 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:07,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:24:07,069 INFO L93 Difference]: Finished difference Result 11000 states and 43041 transitions. [2021-10-06 16:24:07,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-10-06 16:24:07,070 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 81 states have (on average 1.037037037037037) internal successors, (84), 81 states have internal predecessors, (84), 0 states have call successors, (0), 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 81 [2021-10-06 16:24:07,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:24:07,099 INFO L225 Difference]: With dead ends: 11000 [2021-10-06 16:24:07,099 INFO L226 Difference]: Without dead ends: 9420 [2021-10-06 16:24:07,100 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 2665.5ms TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2021-10-06 16:24:07,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9420 states. [2021-10-06 16:24:07,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9420 to 5052. [2021-10-06 16:24:07,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5052 states, 5037 states have (on average 3.8816756005558863) internal successors, (19552), 5051 states have internal predecessors, (19552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:07,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5052 states to 5052 states and 19552 transitions. [2021-10-06 16:24:07,227 INFO L78 Accepts]: Start accepts. Automaton has 5052 states and 19552 transitions. Word has length 81 [2021-10-06 16:24:07,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:24:07,228 INFO L470 AbstractCegarLoop]: Abstraction has 5052 states and 19552 transitions. [2021-10-06 16:24:07,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 81 states have (on average 1.037037037037037) internal successors, (84), 81 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:07,228 INFO L276 IsEmpty]: Start isEmpty. Operand 5052 states and 19552 transitions. [2021-10-06 16:24:07,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-10-06 16:24:07,236 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:24:07,236 INFO L512 BasicCegarLoop]: trace histogram [79, 1, 1, 1] [2021-10-06 16:24:07,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2021-10-06 16:24:07,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,88 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:24:07,437 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:24:07,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:24:07,437 INFO L82 PathProgramCache]: Analyzing trace with hash 158965634, now seen corresponding path program 79 times [2021-10-06 16:24:07,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:24:07,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270143466] [2021-10-06 16:24:07,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:24:07,438 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:24:07,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:24:10,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:24:10,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:24:10,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270143466] [2021-10-06 16:24:10,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270143466] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:24:10,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702963703] [2021-10-06 16:24:10,250 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 16:24:10,251 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:24:10,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:24:10,252 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:24:10,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2021-10-06 16:24:11,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:24:11,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 82 conjunts are in the unsatisfiable core [2021-10-06 16:24:11,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:24:11,547 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:24:11,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702963703] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:24:11,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:24:11,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 81 [2021-10-06 16:24:11,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474041727] [2021-10-06 16:24:11,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2021-10-06 16:24:11,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:24:11,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-10-06 16:24:11,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2021-10-06 16:24:11,551 INFO L87 Difference]: Start difference. First operand 5052 states and 19552 transitions. Second operand has 83 states, 82 states have (on average 1.0365853658536586) internal successors, (85), 82 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:15,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:24:15,495 INFO L93 Difference]: Finished difference Result 11136 states and 43574 transitions. [2021-10-06 16:24:15,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-10-06 16:24:15,495 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 82 states have (on average 1.0365853658536586) internal successors, (85), 82 states have internal predecessors, (85), 0 states have call successors, (0), 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 82 [2021-10-06 16:24:15,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:24:15,525 INFO L225 Difference]: With dead ends: 11136 [2021-10-06 16:24:15,526 INFO L226 Difference]: Without dead ends: 9536 [2021-10-06 16:24:15,526 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 2646.1ms TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2021-10-06 16:24:15,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9536 states. [2021-10-06 16:24:15,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9536 to 5112. [2021-10-06 16:24:15,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5112 states, 5097 states have (on average 3.8814989209338826) internal successors, (19784), 5111 states have internal predecessors, (19784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:15,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5112 states to 5112 states and 19784 transitions. [2021-10-06 16:24:15,651 INFO L78 Accepts]: Start accepts. Automaton has 5112 states and 19784 transitions. Word has length 82 [2021-10-06 16:24:15,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:24:15,651 INFO L470 AbstractCegarLoop]: Abstraction has 5112 states and 19784 transitions. [2021-10-06 16:24:15,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 82 states have (on average 1.0365853658536586) internal successors, (85), 82 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:15,651 INFO L276 IsEmpty]: Start isEmpty. Operand 5112 states and 19784 transitions. [2021-10-06 16:24:15,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-06 16:24:15,659 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:24:15,659 INFO L512 BasicCegarLoop]: trace histogram [80, 1, 1, 1] [2021-10-06 16:24:15,687 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2021-10-06 16:24:15,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,89 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:24:15,860 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:24:15,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:24:15,861 INFO L82 PathProgramCache]: Analyzing trace with hash 632967961, now seen corresponding path program 80 times [2021-10-06 16:24:15,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:24:15,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567169663] [2021-10-06 16:24:15,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:24:15,862 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:24:15,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:24:18,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:24:18,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:24:18,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567169663] [2021-10-06 16:24:18,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567169663] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:24:18,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166802947] [2021-10-06 16:24:18,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:24:18,770 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:24:18,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:24:18,772 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:24:18,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2021-10-06 16:24:19,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:24:19,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:24:19,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 83 conjunts are in the unsatisfiable core [2021-10-06 16:24:19,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:24:20,192 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:24:20,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166802947] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:24:20,192 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:24:20,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 82 [2021-10-06 16:24:20,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106823595] [2021-10-06 16:24:20,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2021-10-06 16:24:20,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:24:20,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-10-06 16:24:20,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2021-10-06 16:24:20,196 INFO L87 Difference]: Start difference. First operand 5112 states and 19784 transitions. Second operand has 84 states, 83 states have (on average 1.036144578313253) internal successors, (86), 83 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:24,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:24:24,453 INFO L93 Difference]: Finished difference Result 11272 states and 44107 transitions. [2021-10-06 16:24:24,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-10-06 16:24:24,453 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 83 states have (on average 1.036144578313253) internal successors, (86), 83 states have internal predecessors, (86), 0 states have call successors, (0), 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 83 [2021-10-06 16:24:24,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:24:24,483 INFO L225 Difference]: With dead ends: 11272 [2021-10-06 16:24:24,483 INFO L226 Difference]: Without dead ends: 9652 [2021-10-06 16:24:24,484 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 2738.6ms TimeCoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2021-10-06 16:24:24,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9652 states. [2021-10-06 16:24:24,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9652 to 5172. [2021-10-06 16:24:24,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5172 states, 5157 states have (on average 3.881326352530541) internal successors, (20016), 5171 states have internal predecessors, (20016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:24,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5172 states to 5172 states and 20016 transitions. [2021-10-06 16:24:24,734 INFO L78 Accepts]: Start accepts. Automaton has 5172 states and 20016 transitions. Word has length 83 [2021-10-06 16:24:24,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:24:24,735 INFO L470 AbstractCegarLoop]: Abstraction has 5172 states and 20016 transitions. [2021-10-06 16:24:24,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 83 states have (on average 1.036144578313253) internal successors, (86), 83 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:24,735 INFO L276 IsEmpty]: Start isEmpty. Operand 5172 states and 20016 transitions. [2021-10-06 16:24:24,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-10-06 16:24:24,748 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:24:24,748 INFO L512 BasicCegarLoop]: trace histogram [81, 1, 1, 1] [2021-10-06 16:24:24,801 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2021-10-06 16:24:24,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2021-10-06 16:24:24,962 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:24:24,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:24:24,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1852829086, now seen corresponding path program 81 times [2021-10-06 16:24:24,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:24:24,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358883329] [2021-10-06 16:24:24,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:24:24,963 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:24:25,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:24:27,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:24:27,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:24:27,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358883329] [2021-10-06 16:24:27,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358883329] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:24:27,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239627786] [2021-10-06 16:24:27,971 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:24:27,972 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:24:27,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:24:27,972 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:24:27,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2021-10-06 16:24:29,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2021-10-06 16:24:29,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:24:29,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 84 conjunts are in the unsatisfiable core [2021-10-06 16:24:29,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:24:29,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:24:29,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239627786] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:24:29,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:24:29,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 83 [2021-10-06 16:24:29,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230817808] [2021-10-06 16:24:29,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2021-10-06 16:24:29,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:24:29,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-10-06 16:24:29,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2021-10-06 16:24:29,432 INFO L87 Difference]: Start difference. First operand 5172 states and 20016 transitions. Second operand has 85 states, 84 states have (on average 1.0357142857142858) internal successors, (87), 84 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:34,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:24:34,004 INFO L93 Difference]: Finished difference Result 11408 states and 44640 transitions. [2021-10-06 16:24:34,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-10-06 16:24:34,004 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 84 states have (on average 1.0357142857142858) internal successors, (87), 84 states have internal predecessors, (87), 0 states have call successors, (0), 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 84 [2021-10-06 16:24:34,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:24:34,035 INFO L225 Difference]: With dead ends: 11408 [2021-10-06 16:24:34,035 INFO L226 Difference]: Without dead ends: 9768 [2021-10-06 16:24:34,035 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 2831.4ms TimeCoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2021-10-06 16:24:34,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9768 states. [2021-10-06 16:24:34,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9768 to 5232. [2021-10-06 16:24:34,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5232 states, 5217 states have (on average 3.881157753498179) internal successors, (20248), 5231 states have internal predecessors, (20248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:34,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5232 states to 5232 states and 20248 transitions. [2021-10-06 16:24:34,169 INFO L78 Accepts]: Start accepts. Automaton has 5232 states and 20248 transitions. Word has length 84 [2021-10-06 16:24:34,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:24:34,169 INFO L470 AbstractCegarLoop]: Abstraction has 5232 states and 20248 transitions. [2021-10-06 16:24:34,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 84 states have (on average 1.0357142857142858) internal successors, (87), 84 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:34,169 INFO L276 IsEmpty]: Start isEmpty. Operand 5232 states and 20248 transitions. [2021-10-06 16:24:34,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-06 16:24:34,178 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:24:34,178 INFO L512 BasicCegarLoop]: trace histogram [82, 1, 1, 1] [2021-10-06 16:24:34,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2021-10-06 16:24:34,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2021-10-06 16:24:34,379 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:24:34,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:24:34,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1603126215, now seen corresponding path program 82 times [2021-10-06 16:24:34,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:24:34,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383841798] [2021-10-06 16:24:34,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:24:34,381 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:24:34,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:24:37,483 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:24:37,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:24:37,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383841798] [2021-10-06 16:24:37,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383841798] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:24:37,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946077309] [2021-10-06 16:24:37,485 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 16:24:37,485 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:24:37,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:24:37,488 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:24:37,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2021-10-06 16:24:38,712 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 16:24:38,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:24:38,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 85 conjunts are in the unsatisfiable core [2021-10-06 16:24:38,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:24:38,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:24:38,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946077309] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:24:38,947 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:24:38,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 84 [2021-10-06 16:24:38,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307327724] [2021-10-06 16:24:38,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2021-10-06 16:24:38,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:24:38,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2021-10-06 16:24:38,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2021-10-06 16:24:38,950 INFO L87 Difference]: Start difference. First operand 5232 states and 20248 transitions. Second operand has 86 states, 85 states have (on average 1.035294117647059) internal successors, (88), 85 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:43,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:24:43,460 INFO L93 Difference]: Finished difference Result 11544 states and 45173 transitions. [2021-10-06 16:24:43,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-10-06 16:24:43,461 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 85 states have (on average 1.035294117647059) internal successors, (88), 85 states have internal predecessors, (88), 0 states have call successors, (0), 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 85 [2021-10-06 16:24:43,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:24:43,491 INFO L225 Difference]: With dead ends: 11544 [2021-10-06 16:24:43,491 INFO L226 Difference]: Without dead ends: 9884 [2021-10-06 16:24:43,492 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 2923.5ms TimeCoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2021-10-06 16:24:43,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9884 states. [2021-10-06 16:24:43,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9884 to 5292. [2021-10-06 16:24:43,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5292 states, 5277 states have (on average 3.8809929884404015) internal successors, (20480), 5291 states have internal predecessors, (20480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:43,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5292 states to 5292 states and 20480 transitions. [2021-10-06 16:24:43,620 INFO L78 Accepts]: Start accepts. Automaton has 5292 states and 20480 transitions. Word has length 85 [2021-10-06 16:24:43,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:24:43,621 INFO L470 AbstractCegarLoop]: Abstraction has 5292 states and 20480 transitions. [2021-10-06 16:24:43,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 85 states have (on average 1.035294117647059) internal successors, (88), 85 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:43,621 INFO L276 IsEmpty]: Start isEmpty. Operand 5292 states and 20480 transitions. [2021-10-06 16:24:43,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-06 16:24:43,629 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:24:43,629 INFO L512 BasicCegarLoop]: trace histogram [83, 1, 1, 1] [2021-10-06 16:24:43,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2021-10-06 16:24:43,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,92 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:24:43,830 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:24:43,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:24:43,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1842695490, now seen corresponding path program 83 times [2021-10-06 16:24:43,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:24:43,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343040116] [2021-10-06 16:24:43,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:24:43,833 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:24:43,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:24:46,969 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:24:46,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:24:46,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343040116] [2021-10-06 16:24:46,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343040116] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:24:46,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032379256] [2021-10-06 16:24:46,970 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 16:24:46,970 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:24:46,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:24:46,972 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:24:46,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2021-10-06 16:24:48,252 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2021-10-06 16:24:48,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:24:48,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 86 conjunts are in the unsatisfiable core [2021-10-06 16:24:48,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:24:48,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:24:48,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032379256] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:24:48,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:24:48,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 85 [2021-10-06 16:24:48,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867209809] [2021-10-06 16:24:48,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2021-10-06 16:24:48,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:24:48,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-10-06 16:24:48,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2021-10-06 16:24:48,483 INFO L87 Difference]: Start difference. First operand 5292 states and 20480 transitions. Second operand has 87 states, 86 states have (on average 1.0348837209302326) internal successors, (89), 86 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:53,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:24:53,379 INFO L93 Difference]: Finished difference Result 11680 states and 45706 transitions. [2021-10-06 16:24:53,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-10-06 16:24:53,380 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 86 states have (on average 1.0348837209302326) internal successors, (89), 86 states have internal predecessors, (89), 0 states have call successors, (0), 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 86 [2021-10-06 16:24:53,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:24:53,411 INFO L225 Difference]: With dead ends: 11680 [2021-10-06 16:24:53,411 INFO L226 Difference]: Without dead ends: 10000 [2021-10-06 16:24:53,411 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 2960.2ms TimeCoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2021-10-06 16:24:53,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10000 states. [2021-10-06 16:24:53,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10000 to 5352. [2021-10-06 16:24:53,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5352 states, 5337 states have (on average 3.880831928049466) internal successors, (20712), 5351 states have internal predecessors, (20712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:53,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5352 states to 5352 states and 20712 transitions. [2021-10-06 16:24:53,551 INFO L78 Accepts]: Start accepts. Automaton has 5352 states and 20712 transitions. Word has length 86 [2021-10-06 16:24:53,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:24:53,551 INFO L470 AbstractCegarLoop]: Abstraction has 5352 states and 20712 transitions. [2021-10-06 16:24:53,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 86 states have (on average 1.0348837209302326) internal successors, (89), 86 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:53,551 INFO L276 IsEmpty]: Start isEmpty. Operand 5352 states and 20712 transitions. [2021-10-06 16:24:53,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-10-06 16:24:53,560 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:24:53,560 INFO L512 BasicCegarLoop]: trace histogram [84, 1, 1, 1] [2021-10-06 16:24:53,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2021-10-06 16:24:53,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2021-10-06 16:24:53,761 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:24:53,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:24:53,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1288985945, now seen corresponding path program 84 times [2021-10-06 16:24:53,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:24:53,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825321342] [2021-10-06 16:24:53,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:24:53,763 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:24:53,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:24:57,010 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:24:57,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:24:57,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825321342] [2021-10-06 16:24:57,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825321342] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:24:57,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386069975] [2021-10-06 16:24:57,011 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 16:24:57,011 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:24:57,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:24:57,017 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:24:57,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2021-10-06 16:24:58,322 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2021-10-06 16:24:58,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:24:58,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 87 conjunts are in the unsatisfiable core [2021-10-06 16:24:58,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:24:58,550 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:24:58,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386069975] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:24:58,551 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:24:58,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 86 [2021-10-06 16:24:58,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595313435] [2021-10-06 16:24:58,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2021-10-06 16:24:58,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:24:58,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-10-06 16:24:58,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2021-10-06 16:24:58,554 INFO L87 Difference]: Start difference. First operand 5352 states and 20712 transitions. Second operand has 88 states, 87 states have (on average 1.0344827586206897) internal successors, (90), 87 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:03,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:25:03,190 INFO L93 Difference]: Finished difference Result 11816 states and 46239 transitions. [2021-10-06 16:25:03,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-10-06 16:25:03,190 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 87 states have (on average 1.0344827586206897) internal successors, (90), 87 states have internal predecessors, (90), 0 states have call successors, (0), 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 87 [2021-10-06 16:25:03,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:25:03,231 INFO L225 Difference]: With dead ends: 11816 [2021-10-06 16:25:03,232 INFO L226 Difference]: Without dead ends: 10116 [2021-10-06 16:25:03,232 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 3060.8ms TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2021-10-06 16:25:03,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10116 states. [2021-10-06 16:25:03,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10116 to 5412. [2021-10-06 16:25:03,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5412 states, 5397 states have (on average 3.880674448767834) internal successors, (20944), 5411 states have internal predecessors, (20944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:03,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5412 states to 5412 states and 20944 transitions. [2021-10-06 16:25:03,457 INFO L78 Accepts]: Start accepts. Automaton has 5412 states and 20944 transitions. Word has length 87 [2021-10-06 16:25:03,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:25:03,458 INFO L470 AbstractCegarLoop]: Abstraction has 5412 states and 20944 transitions. [2021-10-06 16:25:03,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 87 states have (on average 1.0344827586206897) internal successors, (90), 87 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:03,458 INFO L276 IsEmpty]: Start isEmpty. Operand 5412 states and 20944 transitions. [2021-10-06 16:25:03,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-10-06 16:25:03,466 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:25:03,466 INFO L512 BasicCegarLoop]: trace histogram [85, 1, 1, 1] [2021-10-06 16:25:03,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2021-10-06 16:25:03,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2021-10-06 16:25:03,667 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:25:03,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:25:03,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1303859234, now seen corresponding path program 85 times [2021-10-06 16:25:03,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:25:03,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352221768] [2021-10-06 16:25:03,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:25:03,668 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:25:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:25:07,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:25:07,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:25:07,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352221768] [2021-10-06 16:25:07,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352221768] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:25:07,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048590276] [2021-10-06 16:25:07,017 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 16:25:07,017 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:25:07,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:25:07,018 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:25:07,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2021-10-06 16:25:08,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:25:08,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 88 conjunts are in the unsatisfiable core [2021-10-06 16:25:08,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:25:08,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:25:08,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048590276] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:25:08,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:25:08,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 87 [2021-10-06 16:25:08,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194559415] [2021-10-06 16:25:08,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2021-10-06 16:25:08,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:25:08,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2021-10-06 16:25:08,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2021-10-06 16:25:08,549 INFO L87 Difference]: Start difference. First operand 5412 states and 20944 transitions. Second operand has 89 states, 88 states have (on average 1.0340909090909092) internal successors, (91), 88 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:13,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:25:13,552 INFO L93 Difference]: Finished difference Result 11952 states and 46772 transitions. [2021-10-06 16:25:13,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-10-06 16:25:13,552 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 88 states have (on average 1.0340909090909092) internal successors, (91), 88 states have internal predecessors, (91), 0 states have call successors, (0), 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 88 [2021-10-06 16:25:13,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:25:13,583 INFO L225 Difference]: With dead ends: 11952 [2021-10-06 16:25:13,584 INFO L226 Difference]: Without dead ends: 10232 [2021-10-06 16:25:13,584 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 3145.0ms TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2021-10-06 16:25:13,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10232 states. [2021-10-06 16:25:13,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10232 to 5472. [2021-10-06 16:25:13,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5472 states, 5457 states have (on average 3.8805204324720544) internal successors, (21176), 5471 states have internal predecessors, (21176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:13,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5472 states to 5472 states and 21176 transitions. [2021-10-06 16:25:13,723 INFO L78 Accepts]: Start accepts. Automaton has 5472 states and 21176 transitions. Word has length 88 [2021-10-06 16:25:13,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:25:13,723 INFO L470 AbstractCegarLoop]: Abstraction has 5472 states and 21176 transitions. [2021-10-06 16:25:13,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 88 states have (on average 1.0340909090909092) internal successors, (91), 88 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:13,723 INFO L276 IsEmpty]: Start isEmpty. Operand 5472 states and 21176 transitions. [2021-10-06 16:25:13,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-10-06 16:25:13,732 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:25:13,732 INFO L512 BasicCegarLoop]: trace histogram [86, 1, 1, 1] [2021-10-06 16:25:13,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2021-10-06 16:25:13,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-10-06 16:25:13,938 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:25:13,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:25:13,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1764931193, now seen corresponding path program 86 times [2021-10-06 16:25:13,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:25:13,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312439355] [2021-10-06 16:25:13,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:25:13,940 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:25:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:25:17,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:25:17,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:25:17,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312439355] [2021-10-06 16:25:17,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312439355] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:25:17,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672891501] [2021-10-06 16:25:17,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:25:17,242 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:25:17,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:25:17,249 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:25:17,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2021-10-06 16:25:18,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:25:18,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:25:18,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 847 conjuncts, 89 conjunts are in the unsatisfiable core [2021-10-06 16:25:18,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:25:18,795 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:25:18,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672891501] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:25:18,795 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:25:18,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 88 [2021-10-06 16:25:18,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910020405] [2021-10-06 16:25:18,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2021-10-06 16:25:18,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:25:18,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2021-10-06 16:25:18,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2021-10-06 16:25:18,799 INFO L87 Difference]: Start difference. First operand 5472 states and 21176 transitions. Second operand has 90 states, 89 states have (on average 1.0337078651685394) internal successors, (92), 89 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:23,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:25:23,989 INFO L93 Difference]: Finished difference Result 12088 states and 47305 transitions. [2021-10-06 16:25:23,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-10-06 16:25:23,989 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 89 states have (on average 1.0337078651685394) internal successors, (92), 89 states have internal predecessors, (92), 0 states have call successors, (0), 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 89 [2021-10-06 16:25:23,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:25:24,021 INFO L225 Difference]: With dead ends: 12088 [2021-10-06 16:25:24,022 INFO L226 Difference]: Without dead ends: 10348 [2021-10-06 16:25:24,022 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 3113.8ms TimeCoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2021-10-06 16:25:24,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10348 states. [2021-10-06 16:25:24,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10348 to 5532. [2021-10-06 16:25:24,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5532 states, 5517 states have (on average 3.8803697661772705) internal successors, (21408), 5531 states have internal predecessors, (21408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:24,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5532 states to 5532 states and 21408 transitions. [2021-10-06 16:25:24,170 INFO L78 Accepts]: Start accepts. Automaton has 5532 states and 21408 transitions. Word has length 89 [2021-10-06 16:25:24,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:25:24,171 INFO L470 AbstractCegarLoop]: Abstraction has 5532 states and 21408 transitions. [2021-10-06 16:25:24,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 89 states have (on average 1.0337078651685394) internal successors, (92), 89 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:24,171 INFO L276 IsEmpty]: Start isEmpty. Operand 5532 states and 21408 transitions. [2021-10-06 16:25:24,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-06 16:25:24,181 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:25:24,181 INFO L512 BasicCegarLoop]: trace histogram [87, 1, 1, 1] [2021-10-06 16:25:24,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2021-10-06 16:25:24,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103,96 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:25:24,382 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:25:24,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:25:24,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1121707262, now seen corresponding path program 87 times [2021-10-06 16:25:24,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:25:24,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778856429] [2021-10-06 16:25:24,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:25:24,384 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:25:24,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:25:27,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:25:27,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:25:27,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778856429] [2021-10-06 16:25:27,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778856429] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:25:27,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626607292] [2021-10-06 16:25:27,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:25:27,872 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:25:27,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:25:27,872 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:25:27,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2021-10-06 16:25:29,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2021-10-06 16:25:29,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:25:29,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 856 conjuncts, 90 conjunts are in the unsatisfiable core [2021-10-06 16:25:29,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:25:29,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:25:29,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626607292] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:25:29,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:25:29,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 89 [2021-10-06 16:25:29,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987086975] [2021-10-06 16:25:29,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2021-10-06 16:25:29,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:25:29,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-10-06 16:25:29,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2021-10-06 16:25:29,511 INFO L87 Difference]: Start difference. First operand 5532 states and 21408 transitions. Second operand has 91 states, 90 states have (on average 1.0333333333333334) internal successors, (93), 90 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:34,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:25:34,708 INFO L93 Difference]: Finished difference Result 12224 states and 47838 transitions. [2021-10-06 16:25:34,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-10-06 16:25:34,708 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 90 states have (on average 1.0333333333333334) internal successors, (93), 90 states have internal predecessors, (93), 0 states have call successors, (0), 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 90 [2021-10-06 16:25:34,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:25:34,739 INFO L225 Difference]: With dead ends: 12224 [2021-10-06 16:25:34,739 INFO L226 Difference]: Without dead ends: 10464 [2021-10-06 16:25:34,740 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 3296.8ms TimeCoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2021-10-06 16:25:34,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10464 states. [2021-10-06 16:25:34,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10464 to 5592. [2021-10-06 16:25:34,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5592 states, 5577 states have (on average 3.8802223417608035) internal successors, (21640), 5591 states have internal predecessors, (21640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:34,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5592 states to 5592 states and 21640 transitions. [2021-10-06 16:25:34,976 INFO L78 Accepts]: Start accepts. Automaton has 5592 states and 21640 transitions. Word has length 90 [2021-10-06 16:25:34,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:25:34,976 INFO L470 AbstractCegarLoop]: Abstraction has 5592 states and 21640 transitions. [2021-10-06 16:25:34,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 90 states have (on average 1.0333333333333334) internal successors, (93), 90 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:34,976 INFO L276 IsEmpty]: Start isEmpty. Operand 5592 states and 21640 transitions. [2021-10-06 16:25:34,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-10-06 16:25:34,985 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:25:34,985 INFO L512 BasicCegarLoop]: trace histogram [88, 1, 1, 1] [2021-10-06 16:25:35,016 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2021-10-06 16:25:35,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2021-10-06 16:25:35,186 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:25:35,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:25:35,187 INFO L82 PathProgramCache]: Analyzing trace with hash -413186151, now seen corresponding path program 88 times [2021-10-06 16:25:35,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:25:35,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775927113] [2021-10-06 16:25:35,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:25:35,188 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:25:35,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:25:38,748 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:25:38,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:25:38,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775927113] [2021-10-06 16:25:38,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775927113] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:25:38,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274390348] [2021-10-06 16:25:38,749 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 16:25:38,749 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:25:38,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:25:38,750 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:25:38,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2021-10-06 16:25:40,141 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 16:25:40,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:25:40,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 91 conjunts are in the unsatisfiable core [2021-10-06 16:25:40,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:25:40,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:25:40,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274390348] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:25:40,386 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:25:40,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 90 [2021-10-06 16:25:40,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206135884] [2021-10-06 16:25:40,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2021-10-06 16:25:40,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:25:40,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-10-06 16:25:40,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2021-10-06 16:25:40,389 INFO L87 Difference]: Start difference. First operand 5592 states and 21640 transitions. Second operand has 92 states, 91 states have (on average 1.032967032967033) internal successors, (94), 91 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:46,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:25:46,094 INFO L93 Difference]: Finished difference Result 12360 states and 48371 transitions. [2021-10-06 16:25:46,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-10-06 16:25:46,094 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 91 states have (on average 1.032967032967033) internal successors, (94), 91 states have internal predecessors, (94), 0 states have call successors, (0), 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 91 [2021-10-06 16:25:46,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:25:46,127 INFO L225 Difference]: With dead ends: 12360 [2021-10-06 16:25:46,127 INFO L226 Difference]: Without dead ends: 10580 [2021-10-06 16:25:46,128 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 3367.2ms TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2021-10-06 16:25:46,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10580 states. [2021-10-06 16:25:46,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10580 to 5652. [2021-10-06 16:25:46,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5652 states, 5637 states have (on average 3.8800780557033883) internal successors, (21872), 5651 states have internal predecessors, (21872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:46,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5652 states to 5652 states and 21872 transitions. [2021-10-06 16:25:46,279 INFO L78 Accepts]: Start accepts. Automaton has 5652 states and 21872 transitions. Word has length 91 [2021-10-06 16:25:46,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:25:46,280 INFO L470 AbstractCegarLoop]: Abstraction has 5652 states and 21872 transitions. [2021-10-06 16:25:46,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 91 states have (on average 1.032967032967033) internal successors, (94), 91 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:46,280 INFO L276 IsEmpty]: Start isEmpty. Operand 5652 states and 21872 transitions. [2021-10-06 16:25:46,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-10-06 16:25:46,289 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:25:46,289 INFO L512 BasicCegarLoop]: trace histogram [89, 1, 1, 1] [2021-10-06 16:25:46,320 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2021-10-06 16:25:46,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,98 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:25:46,490 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:25:46,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:25:46,490 INFO L82 PathProgramCache]: Analyzing trace with hash 76131810, now seen corresponding path program 89 times [2021-10-06 16:25:46,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:25:46,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975480235] [2021-10-06 16:25:46,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:25:46,491 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:25:46,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:25:50,116 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:25:50,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:25:50,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975480235] [2021-10-06 16:25:50,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975480235] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:25:50,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504066752] [2021-10-06 16:25:50,117 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 16:25:50,117 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:25:50,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:25:50,118 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:25:50,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2021-10-06 16:25:51,556 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2021-10-06 16:25:51,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:25:51,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 874 conjuncts, 92 conjunts are in the unsatisfiable core [2021-10-06 16:25:51,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:25:51,775 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:25:51,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504066752] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:25:51,776 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:25:51,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 91 [2021-10-06 16:25:51,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793224080] [2021-10-06 16:25:51,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2021-10-06 16:25:51,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:25:51,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-10-06 16:25:51,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2021-10-06 16:25:51,778 INFO L87 Difference]: Start difference. First operand 5652 states and 21872 transitions. Second operand has 93 states, 92 states have (on average 1.0326086956521738) internal successors, (95), 92 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:57,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:25:57,423 INFO L93 Difference]: Finished difference Result 12496 states and 48904 transitions. [2021-10-06 16:25:57,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-10-06 16:25:57,423 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 92 states have (on average 1.0326086956521738) internal successors, (95), 92 states have internal predecessors, (95), 0 states have call successors, (0), 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 92 [2021-10-06 16:25:57,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:25:57,458 INFO L225 Difference]: With dead ends: 12496 [2021-10-06 16:25:57,458 INFO L226 Difference]: Without dead ends: 10696 [2021-10-06 16:25:57,458 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 3432.2ms TimeCoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2021-10-06 16:25:57,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10696 states. [2021-10-06 16:25:57,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10696 to 5712. [2021-10-06 16:25:57,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5712 states, 5697 states have (on average 3.8799368088467614) internal successors, (22104), 5711 states have internal predecessors, (22104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:57,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5712 states to 5712 states and 22104 transitions. [2021-10-06 16:25:57,613 INFO L78 Accepts]: Start accepts. Automaton has 5712 states and 22104 transitions. Word has length 92 [2021-10-06 16:25:57,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:25:57,613 INFO L470 AbstractCegarLoop]: Abstraction has 5712 states and 22104 transitions. [2021-10-06 16:25:57,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 92 states have (on average 1.0326086956521738) internal successors, (95), 92 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:57,614 INFO L276 IsEmpty]: Start isEmpty. Operand 5712 states and 22104 transitions. [2021-10-06 16:25:57,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-10-06 16:25:57,623 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:25:57,623 INFO L512 BasicCegarLoop]: trace histogram [90, 1, 1, 1] [2021-10-06 16:25:57,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0 [2021-10-06 16:25:57,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2021-10-06 16:25:57,824 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:25:57,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:25:57,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1934880583, now seen corresponding path program 90 times [2021-10-06 16:25:57,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:25:57,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936063084] [2021-10-06 16:25:57,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:25:57,825 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:25:57,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:26:01,546 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:26:01,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:26:01,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936063084] [2021-10-06 16:26:01,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936063084] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:26:01,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275703666] [2021-10-06 16:26:01,547 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 16:26:01,547 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:26:01,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:26:01,548 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:26:01,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2021-10-06 16:26:03,051 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2021-10-06 16:26:03,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:26:03,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 883 conjuncts, 93 conjunts are in the unsatisfiable core [2021-10-06 16:26:03,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:26:03,381 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:26:03,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275703666] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:26:03,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:26:03,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 92 [2021-10-06 16:26:03,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112455064] [2021-10-06 16:26:03,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-10-06 16:26:03,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:26:03,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-10-06 16:26:03,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2021-10-06 16:26:03,383 INFO L87 Difference]: Start difference. First operand 5712 states and 22104 transitions. Second operand has 94 states, 93 states have (on average 1.032258064516129) internal successors, (96), 93 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:09,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:26:09,087 INFO L93 Difference]: Finished difference Result 12632 states and 49437 transitions. [2021-10-06 16:26:09,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-10-06 16:26:09,088 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 1.032258064516129) internal successors, (96), 93 states have internal predecessors, (96), 0 states have call successors, (0), 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 93 [2021-10-06 16:26:09,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:26:09,121 INFO L225 Difference]: With dead ends: 12632 [2021-10-06 16:26:09,121 INFO L226 Difference]: Without dead ends: 10812 [2021-10-06 16:26:09,122 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 3518.1ms TimeCoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2021-10-06 16:26:09,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10812 states. [2021-10-06 16:26:09,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10812 to 5772. [2021-10-06 16:26:09,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5772 states, 5757 states have (on average 3.879798506166406) internal successors, (22336), 5771 states have internal predecessors, (22336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:09,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5772 states to 5772 states and 22336 transitions. [2021-10-06 16:26:09,268 INFO L78 Accepts]: Start accepts. Automaton has 5772 states and 22336 transitions. Word has length 93 [2021-10-06 16:26:09,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:26:09,268 INFO L470 AbstractCegarLoop]: Abstraction has 5772 states and 22336 transitions. [2021-10-06 16:26:09,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 1.032258064516129) internal successors, (96), 93 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:09,268 INFO L276 IsEmpty]: Start isEmpty. Operand 5772 states and 22336 transitions. [2021-10-06 16:26:09,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-10-06 16:26:09,277 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:26:09,277 INFO L512 BasicCegarLoop]: trace histogram [91, 1, 1, 1] [2021-10-06 16:26:09,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2021-10-06 16:26:09,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,100 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:26:09,486 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:26:09,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:26:09,486 INFO L82 PathProgramCache]: Analyzing trace with hash 148244674, now seen corresponding path program 91 times [2021-10-06 16:26:09,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:26:09,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047004398] [2021-10-06 16:26:09,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:26:09,488 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:26:09,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:26:13,128 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:26:13,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:26:13,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047004398] [2021-10-06 16:26:13,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047004398] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:26:13,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322451768] [2021-10-06 16:26:13,129 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 16:26:13,129 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:26:13,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:26:13,130 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:26:13,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2021-10-06 16:26:14,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:26:14,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 892 conjuncts, 94 conjunts are in the unsatisfiable core [2021-10-06 16:26:14,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:26:14,772 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:26:14,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322451768] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:26:14,773 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:26:14,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 93 [2021-10-06 16:26:14,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509288386] [2021-10-06 16:26:14,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2021-10-06 16:26:14,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:26:14,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2021-10-06 16:26:14,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2021-10-06 16:26:14,776 INFO L87 Difference]: Start difference. First operand 5772 states and 22336 transitions. Second operand has 95 states, 94 states have (on average 1.0319148936170213) internal successors, (97), 94 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:20,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:26:20,537 INFO L93 Difference]: Finished difference Result 12768 states and 49970 transitions. [2021-10-06 16:26:20,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-10-06 16:26:20,537 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 94 states have (on average 1.0319148936170213) internal successors, (97), 94 states have internal predecessors, (97), 0 states have call successors, (0), 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 94 [2021-10-06 16:26:20,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:26:20,569 INFO L225 Difference]: With dead ends: 12768 [2021-10-06 16:26:20,569 INFO L226 Difference]: Without dead ends: 10928 [2021-10-06 16:26:20,570 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 3449.5ms TimeCoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2021-10-06 16:26:20,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10928 states. [2021-10-06 16:26:20,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10928 to 5832. [2021-10-06 16:26:20,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5832 states, 5817 states have (on average 3.8796630565583636) internal successors, (22568), 5831 states have internal predecessors, (22568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:20,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5832 states to 5832 states and 22568 transitions. [2021-10-06 16:26:20,713 INFO L78 Accepts]: Start accepts. Automaton has 5832 states and 22568 transitions. Word has length 94 [2021-10-06 16:26:20,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:26:20,714 INFO L470 AbstractCegarLoop]: Abstraction has 5832 states and 22568 transitions. [2021-10-06 16:26:20,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 94 states have (on average 1.0319148936170213) internal successors, (97), 94 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:20,714 INFO L276 IsEmpty]: Start isEmpty. Operand 5832 states and 22568 transitions. [2021-10-06 16:26:20,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-06 16:26:20,723 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:26:20,723 INFO L512 BasicCegarLoop]: trace histogram [92, 1, 1, 1] [2021-10-06 16:26:20,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2021-10-06 16:26:20,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,101 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:26:20,924 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:26:20,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:26:20,925 INFO L82 PathProgramCache]: Analyzing trace with hash 300618201, now seen corresponding path program 92 times [2021-10-06 16:26:20,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:26:20,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279605346] [2021-10-06 16:26:20,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:26:20,926 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:26:20,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:26:24,786 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:26:24,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:26:24,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279605346] [2021-10-06 16:26:24,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279605346] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:26:24,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587354340] [2021-10-06 16:26:24,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:26:24,787 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:26:24,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:26:24,788 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:26:24,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2021-10-06 16:26:26,287 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:26:26,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:26:26,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 95 conjunts are in the unsatisfiable core [2021-10-06 16:26:26,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:26:26,550 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:26:26,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587354340] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:26:26,551 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:26:26,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 94 [2021-10-06 16:26:26,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085167741] [2021-10-06 16:26:26,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-10-06 16:26:26,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:26:26,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-10-06 16:26:26,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-10-06 16:26:26,554 INFO L87 Difference]: Start difference. First operand 5832 states and 22568 transitions. Second operand has 96 states, 95 states have (on average 1.0315789473684212) internal successors, (98), 95 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:32,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:26:32,784 INFO L93 Difference]: Finished difference Result 12904 states and 50503 transitions. [2021-10-06 16:26:32,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-10-06 16:26:32,785 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 1.0315789473684212) internal successors, (98), 95 states have internal predecessors, (98), 0 states have call successors, (0), 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 95 [2021-10-06 16:26:32,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:26:32,825 INFO L225 Difference]: With dead ends: 12904 [2021-10-06 16:26:32,825 INFO L226 Difference]: Without dead ends: 11044 [2021-10-06 16:26:32,826 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 3659.6ms TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-10-06 16:26:32,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11044 states. [2021-10-06 16:26:32,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11044 to 5892. [2021-10-06 16:26:32,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5892 states, 5877 states have (on average 3.8795303726391017) internal successors, (22800), 5891 states have internal predecessors, (22800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:32,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5892 states to 5892 states and 22800 transitions. [2021-10-06 16:26:32,974 INFO L78 Accepts]: Start accepts. Automaton has 5892 states and 22800 transitions. Word has length 95 [2021-10-06 16:26:32,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:26:32,974 INFO L470 AbstractCegarLoop]: Abstraction has 5892 states and 22800 transitions. [2021-10-06 16:26:32,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 1.0315789473684212) internal successors, (98), 95 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:32,974 INFO L276 IsEmpty]: Start isEmpty. Operand 5892 states and 22800 transitions. [2021-10-06 16:26:32,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-10-06 16:26:32,983 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:26:32,983 INFO L512 BasicCegarLoop]: trace histogram [93, 1, 1, 1] [2021-10-06 16:26:33,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2021-10-06 16:26:33,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,102 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:26:33,184 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:26:33,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:26:33,185 INFO L82 PathProgramCache]: Analyzing trace with hash 729230242, now seen corresponding path program 93 times [2021-10-06 16:26:33,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:26:33,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971589666] [2021-10-06 16:26:33,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:26:33,186 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:26:33,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:26:37,093 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:26:37,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:26:37,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971589666] [2021-10-06 16:26:37,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971589666] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:26:37,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851382483] [2021-10-06 16:26:37,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:26:37,095 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:26:37,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:26:37,096 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:26:37,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2021-10-06 16:26:38,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2021-10-06 16:26:38,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:26:38,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 910 conjuncts, 96 conjunts are in the unsatisfiable core [2021-10-06 16:26:38,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:26:38,903 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:26:38,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851382483] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:26:38,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:26:38,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 95 [2021-10-06 16:26:38,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530844624] [2021-10-06 16:26:38,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2021-10-06 16:26:38,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:26:38,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-10-06 16:26:38,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2021-10-06 16:26:38,906 INFO L87 Difference]: Start difference. First operand 5892 states and 22800 transitions. Second operand has 97 states, 96 states have (on average 1.03125) internal successors, (99), 96 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:45,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:26:45,467 INFO L93 Difference]: Finished difference Result 13040 states and 51036 transitions. [2021-10-06 16:26:45,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-10-06 16:26:45,467 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 96 states have (on average 1.03125) internal successors, (99), 96 states have internal predecessors, (99), 0 states have call successors, (0), 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 96 [2021-10-06 16:26:45,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:26:45,499 INFO L225 Difference]: With dead ends: 13040 [2021-10-06 16:26:45,500 INFO L226 Difference]: Without dead ends: 11160 [2021-10-06 16:26:45,500 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 3707.7ms TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2021-10-06 16:26:45,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11160 states. [2021-10-06 16:26:45,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11160 to 5952. [2021-10-06 16:26:45,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5952 states, 5937 states have (on average 3.8794003705575206) internal successors, (23032), 5951 states have internal predecessors, (23032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:45,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5952 states to 5952 states and 23032 transitions. [2021-10-06 16:26:45,635 INFO L78 Accepts]: Start accepts. Automaton has 5952 states and 23032 transitions. Word has length 96 [2021-10-06 16:26:45,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:26:45,635 INFO L470 AbstractCegarLoop]: Abstraction has 5952 states and 23032 transitions. [2021-10-06 16:26:45,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 96 states have (on average 1.03125) internal successors, (99), 96 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:45,635 INFO L276 IsEmpty]: Start isEmpty. Operand 5952 states and 23032 transitions. [2021-10-06 16:26:45,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-10-06 16:26:45,644 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:26:45,644 INFO L512 BasicCegarLoop]: trace histogram [94, 1, 1, 1] [2021-10-06 16:26:45,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2021-10-06 16:26:45,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,103 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:26:45,845 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:26:45,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:26:45,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1131301625, now seen corresponding path program 94 times [2021-10-06 16:26:45,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:26:45,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683971884] [2021-10-06 16:26:45,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:26:45,847 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:26:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:26:49,593 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:26:49,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:26:49,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683971884] [2021-10-06 16:26:49,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683971884] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:26:49,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810151461] [2021-10-06 16:26:49,594 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 16:26:49,594 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:26:49,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:26:49,595 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:26:49,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2021-10-06 16:26:51,029 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 16:26:51,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:26:51,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 97 conjunts are in the unsatisfiable core [2021-10-06 16:26:51,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:26:51,274 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:26:51,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810151461] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:26:51,274 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:26:51,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 96 [2021-10-06 16:26:51,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562746569] [2021-10-06 16:26:51,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2021-10-06 16:26:51,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:26:51,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2021-10-06 16:26:51,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2021-10-06 16:26:51,277 INFO L87 Difference]: Start difference. First operand 5952 states and 23032 transitions. Second operand has 98 states, 97 states have (on average 1.0309278350515463) internal successors, (100), 97 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:57,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:26:57,634 INFO L93 Difference]: Finished difference Result 13176 states and 51569 transitions. [2021-10-06 16:26:57,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-10-06 16:26:57,634 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 97 states have (on average 1.0309278350515463) internal successors, (100), 97 states have internal predecessors, (100), 0 states have call successors, (0), 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 97 [2021-10-06 16:26:57,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:26:57,667 INFO L225 Difference]: With dead ends: 13176 [2021-10-06 16:26:57,667 INFO L226 Difference]: Without dead ends: 11276 [2021-10-06 16:26:57,667 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 3546.1ms TimeCoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2021-10-06 16:26:57,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11276 states. [2021-10-06 16:26:57,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11276 to 6012. [2021-10-06 16:26:57,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6012 states, 5997 states have (on average 3.8792729698182424) internal successors, (23264), 6011 states have internal predecessors, (23264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:57,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6012 states to 6012 states and 23264 transitions. [2021-10-06 16:26:57,807 INFO L78 Accepts]: Start accepts. Automaton has 6012 states and 23264 transitions. Word has length 97 [2021-10-06 16:26:57,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:26:57,807 INFO L470 AbstractCegarLoop]: Abstraction has 6012 states and 23264 transitions. [2021-10-06 16:26:57,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 97 states have (on average 1.0309278350515463) internal successors, (100), 97 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:57,808 INFO L276 IsEmpty]: Start isEmpty. Operand 6012 states and 23264 transitions. [2021-10-06 16:26:57,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-10-06 16:26:57,817 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:26:57,817 INFO L512 BasicCegarLoop]: trace histogram [95, 1, 1, 1] [2021-10-06 16:26:57,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2021-10-06 16:26:58,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111,104 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:26:58,018 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:26:58,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:26:58,018 INFO L82 PathProgramCache]: Analyzing trace with hash 710612610, now seen corresponding path program 95 times [2021-10-06 16:26:58,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:26:58,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010608949] [2021-10-06 16:26:58,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:26:58,019 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:26:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:27:01,840 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:27:01,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:27:01,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010608949] [2021-10-06 16:27:01,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010608949] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:27:01,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959257591] [2021-10-06 16:27:01,841 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 16:27:01,841 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:27:01,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:27:01,843 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:27:01,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2021-10-06 16:27:03,351 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2021-10-06 16:27:03,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:27:03,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 928 conjuncts, 98 conjunts are in the unsatisfiable core [2021-10-06 16:27:03,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:27:03,595 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:27:03,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959257591] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:27:03,595 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:27:03,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 97 [2021-10-06 16:27:03,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143208535] [2021-10-06 16:27:03,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2021-10-06 16:27:03,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:27:03,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-10-06 16:27:03,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2021-10-06 16:27:03,598 INFO L87 Difference]: Start difference. First operand 6012 states and 23264 transitions. Second operand has 99 states, 98 states have (on average 1.030612244897959) internal successors, (101), 98 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:27:10,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:27:10,020 INFO L93 Difference]: Finished difference Result 13312 states and 52102 transitions. [2021-10-06 16:27:10,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-10-06 16:27:10,020 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 98 states have (on average 1.030612244897959) internal successors, (101), 98 states have internal predecessors, (101), 0 states have call successors, (0), 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 98 [2021-10-06 16:27:10,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:27:10,053 INFO L225 Difference]: With dead ends: 13312 [2021-10-06 16:27:10,053 INFO L226 Difference]: Without dead ends: 11392 [2021-10-06 16:27:10,054 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 3623.1ms TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2021-10-06 16:27:10,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11392 states. [2021-10-06 16:27:10,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11392 to 6072. [2021-10-06 16:27:10,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6072 states, 6057 states have (on average 3.8791480931154037) internal successors, (23496), 6071 states have internal predecessors, (23496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:27:10,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6072 states to 6072 states and 23496 transitions. [2021-10-06 16:27:10,196 INFO L78 Accepts]: Start accepts. Automaton has 6072 states and 23496 transitions. Word has length 98 [2021-10-06 16:27:10,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:27:10,196 INFO L470 AbstractCegarLoop]: Abstraction has 6072 states and 23496 transitions. [2021-10-06 16:27:10,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 98 states have (on average 1.030612244897959) internal successors, (101), 98 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:27:10,197 INFO L276 IsEmpty]: Start isEmpty. Operand 6072 states and 23496 transitions. [2021-10-06 16:27:10,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-10-06 16:27:10,206 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:27:10,206 INFO L512 BasicCegarLoop]: trace histogram [96, 1, 1, 1] [2021-10-06 16:27:10,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2021-10-06 16:27:10,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2021-10-06 16:27:10,407 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:27:10,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:27:10,408 INFO L82 PathProgramCache]: Analyzing trace with hash 554155033, now seen corresponding path program 96 times [2021-10-06 16:27:10,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:27:10,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375654941] [2021-10-06 16:27:10,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:27:10,409 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:27:10,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:27:14,307 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:27:14,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:27:14,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375654941] [2021-10-06 16:27:14,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375654941] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:27:14,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356336342] [2021-10-06 16:27:14,308 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 16:27:14,308 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:27:14,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:27:14,314 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:27:14,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2021-10-06 16:27:15,896 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2021-10-06 16:27:15,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:27:15,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 937 conjuncts, 99 conjunts are in the unsatisfiable core [2021-10-06 16:27:15,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:27:16,144 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:27:16,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356336342] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:27:16,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:27:16,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 98 [2021-10-06 16:27:16,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819865504] [2021-10-06 16:27:16,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2021-10-06 16:27:16,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:27:16,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-10-06 16:27:16,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2021-10-06 16:27:16,147 INFO L87 Difference]: Start difference. First operand 6072 states and 23496 transitions. Second operand has 100 states, 99 states have (on average 1.0303030303030303) internal successors, (102), 99 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:27:23,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:27:23,840 INFO L93 Difference]: Finished difference Result 13448 states and 52635 transitions. [2021-10-06 16:27:23,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-10-06 16:27:23,841 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 99 states have (on average 1.0303030303030303) internal successors, (102), 99 states have internal predecessors, (102), 0 states have call successors, (0), 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 99 [2021-10-06 16:27:23,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:27:23,874 INFO L225 Difference]: With dead ends: 13448 [2021-10-06 16:27:23,874 INFO L226 Difference]: Without dead ends: 11508 [2021-10-06 16:27:23,875 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 3699.3ms TimeCoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2021-10-06 16:27:23,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11508 states. [2021-10-06 16:27:23,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11508 to 6132. [2021-10-06 16:27:24,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6132 states, 6117 states have (on average 3.87902566617623) internal successors, (23728), 6131 states have internal predecessors, (23728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:27:24,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6132 states to 6132 states and 23728 transitions. [2021-10-06 16:27:24,023 INFO L78 Accepts]: Start accepts. Automaton has 6132 states and 23728 transitions. Word has length 99 [2021-10-06 16:27:24,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:27:24,023 INFO L470 AbstractCegarLoop]: Abstraction has 6132 states and 23728 transitions. [2021-10-06 16:27:24,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 99 states have (on average 1.0303030303030303) internal successors, (102), 99 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:27:24,024 INFO L276 IsEmpty]: Start isEmpty. Operand 6132 states and 23728 transitions. [2021-10-06 16:27:24,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-06 16:27:24,034 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:27:24,034 INFO L512 BasicCegarLoop]: trace histogram [97, 1, 1, 1] [2021-10-06 16:27:24,064 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0 [2021-10-06 16:27:24,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2021-10-06 16:27:24,235 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:27:24,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:27:24,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1062558, now seen corresponding path program 97 times [2021-10-06 16:27:24,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:27:24,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830215360] [2021-10-06 16:27:24,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:27:24,236 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:27:24,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:27:28,230 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:27:28,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:27:28,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830215360] [2021-10-06 16:27:28,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830215360] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:27:28,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307219419] [2021-10-06 16:27:28,231 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 16:27:28,231 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:27:28,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:27:28,232 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:27:28,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2021-10-06 16:27:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:27:29,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 946 conjuncts, 100 conjunts are in the unsatisfiable core [2021-10-06 16:27:29,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:27:29,977 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:27:29,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307219419] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:27:29,977 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:27:29,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 99 [2021-10-06 16:27:29,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143255651] [2021-10-06 16:27:29,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2021-10-06 16:27:29,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:27:29,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2021-10-06 16:27:29,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2021-10-06 16:27:29,982 INFO L87 Difference]: Start difference. First operand 6132 states and 23728 transitions. Second operand has 101 states, 100 states have (on average 1.03) internal successors, (103), 100 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:27:36,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:27:36,857 INFO L93 Difference]: Finished difference Result 13584 states and 53168 transitions. [2021-10-06 16:27:36,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-10-06 16:27:36,857 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 100 states have (on average 1.03) internal successors, (103), 100 states have internal predecessors, (103), 0 states have call successors, (0), 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 100 [2021-10-06 16:27:36,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:27:36,999 INFO L225 Difference]: With dead ends: 13584 [2021-10-06 16:27:36,999 INFO L226 Difference]: Without dead ends: 11624 [2021-10-06 16:27:37,000 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 3786.6ms TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2021-10-06 16:27:37,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11624 states. [2021-10-06 16:27:37,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11624 to 6192. [2021-10-06 16:27:37,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6192 states, 6177 states have (on average 3.878905617613728) internal successors, (23960), 6191 states have internal predecessors, (23960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:27:37,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6192 states to 6192 states and 23960 transitions. [2021-10-06 16:27:37,138 INFO L78 Accepts]: Start accepts. Automaton has 6192 states and 23960 transitions. Word has length 100 [2021-10-06 16:27:37,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:27:37,138 INFO L470 AbstractCegarLoop]: Abstraction has 6192 states and 23960 transitions. [2021-10-06 16:27:37,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 100 states have (on average 1.03) internal successors, (103), 100 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:27:37,139 INFO L276 IsEmpty]: Start isEmpty. Operand 6192 states and 23960 transitions. [2021-10-06 16:27:37,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-10-06 16:27:37,148 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:27:37,148 INFO L512 BasicCegarLoop]: trace histogram [98, 1, 1, 1] [2021-10-06 16:27:37,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Forceful destruction successful, exit code 0 [2021-10-06 16:27:37,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2021-10-06 16:27:37,349 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:27:37,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:27:37,350 INFO L82 PathProgramCache]: Analyzing trace with hash -32938695, now seen corresponding path program 98 times [2021-10-06 16:27:37,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:27:37,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226800456] [2021-10-06 16:27:37,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:27:37,351 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:27:37,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:27:41,413 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:27:41,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:27:41,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226800456] [2021-10-06 16:27:41,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226800456] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:27:41,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233247500] [2021-10-06 16:27:41,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:27:41,414 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:27:41,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:27:41,416 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:27:41,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2021-10-06 16:27:42,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:27:42,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:27:42,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 955 conjuncts, 101 conjunts are in the unsatisfiable core [2021-10-06 16:27:42,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:27:43,216 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:27:43,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233247500] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:27:43,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:27:43,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 100 [2021-10-06 16:27:43,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960511517] [2021-10-06 16:27:43,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2021-10-06 16:27:43,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:27:43,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-10-06 16:27:43,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2021-10-06 16:27:43,220 INFO L87 Difference]: Start difference. First operand 6192 states and 23960 transitions. Second operand has 102 states, 101 states have (on average 1.0297029702970297) internal successors, (104), 101 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:27:50,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:27:50,840 INFO L93 Difference]: Finished difference Result 13720 states and 53701 transitions. [2021-10-06 16:27:50,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-10-06 16:27:50,841 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 101 states have (on average 1.0297029702970297) internal successors, (104), 101 states have internal predecessors, (104), 0 states have call successors, (0), 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 101 [2021-10-06 16:27:50,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:27:50,888 INFO L225 Difference]: With dead ends: 13720 [2021-10-06 16:27:50,888 INFO L226 Difference]: Without dead ends: 11740 [2021-10-06 16:27:50,889 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 3839.6ms TimeCoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2021-10-06 16:27:50,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11740 states. [2021-10-06 16:27:51,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11740 to 6252. [2021-10-06 16:27:51,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6252 states, 6237 states have (on average 3.878787878787879) internal successors, (24192), 6251 states have internal predecessors, (24192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:27:51,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6252 states to 6252 states and 24192 transitions. [2021-10-06 16:27:51,041 INFO L78 Accepts]: Start accepts. Automaton has 6252 states and 24192 transitions. Word has length 101 [2021-10-06 16:27:51,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:27:51,041 INFO L470 AbstractCegarLoop]: Abstraction has 6252 states and 24192 transitions. [2021-10-06 16:27:51,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 101 states have (on average 1.0297029702970297) internal successors, (104), 101 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:27:51,041 INFO L276 IsEmpty]: Start isEmpty. Operand 6252 states and 24192 transitions. [2021-10-06 16:27:51,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-10-06 16:27:51,050 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:27:51,050 INFO L512 BasicCegarLoop]: trace histogram [99, 1, 1, 1] [2021-10-06 16:27:51,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2021-10-06 16:27:51,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2021-10-06 16:27:51,251 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:27:51,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:27:51,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1021098942, now seen corresponding path program 99 times [2021-10-06 16:27:51,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:27:51,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433327039] [2021-10-06 16:27:51,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:27:51,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:27:51,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:27:55,417 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:27:55,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:27:55,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433327039] [2021-10-06 16:27:55,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433327039] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:27:55,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634805064] [2021-10-06 16:27:55,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:27:55,418 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:27:55,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:27:55,420 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:27:55,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2021-10-06 16:27:57,183 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2021-10-06 16:27:57,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:27:57,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 964 conjuncts, 102 conjunts are in the unsatisfiable core [2021-10-06 16:27:57,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:27:57,436 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:27:57,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634805064] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:27:57,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:27:57,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 101 [2021-10-06 16:27:57,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828791133] [2021-10-06 16:27:57,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2021-10-06 16:27:57,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:27:57,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-10-06 16:27:57,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2021-10-06 16:27:57,438 INFO L87 Difference]: Start difference. First operand 6252 states and 24192 transitions. Second operand has 103 states, 102 states have (on average 1.0294117647058822) internal successors, (105), 102 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:28:04,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:28:04,628 INFO L93 Difference]: Finished difference Result 13856 states and 54234 transitions. [2021-10-06 16:28:04,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-10-06 16:28:04,628 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 102 states have (on average 1.0294117647058822) internal successors, (105), 102 states have internal predecessors, (105), 0 states have call successors, (0), 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 102 [2021-10-06 16:28:04,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:28:04,662 INFO L225 Difference]: With dead ends: 13856 [2021-10-06 16:28:04,663 INFO L226 Difference]: Without dead ends: 11856 [2021-10-06 16:28:04,663 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 3945.1ms TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2021-10-06 16:28:04,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11856 states. [2021-10-06 16:28:04,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11856 to 6312. [2021-10-06 16:28:04,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6312 states, 6297 states have (on average 3.8786723836747656) internal successors, (24424), 6311 states have internal predecessors, (24424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:28:04,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6312 states to 6312 states and 24424 transitions. [2021-10-06 16:28:04,814 INFO L78 Accepts]: Start accepts. Automaton has 6312 states and 24424 transitions. Word has length 102 [2021-10-06 16:28:04,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:28:04,814 INFO L470 AbstractCegarLoop]: Abstraction has 6312 states and 24424 transitions. [2021-10-06 16:28:04,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 102 states have (on average 1.0294117647058822) internal successors, (105), 102 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:28:04,814 INFO L276 IsEmpty]: Start isEmpty. Operand 6312 states and 24424 transitions. [2021-10-06 16:28:04,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-10-06 16:28:04,824 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:28:04,824 INFO L512 BasicCegarLoop]: trace histogram [100, 1, 1, 1] [2021-10-06 16:28:04,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2021-10-06 16:28:05,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 109 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2021-10-06 16:28:05,025 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:28:05,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:28:05,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1589295527, now seen corresponding path program 100 times [2021-10-06 16:28:05,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:28:05,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372837518] [2021-10-06 16:28:05,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:28:05,027 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:28:05,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:28:09,246 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:28:09,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:28:09,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372837518] [2021-10-06 16:28:09,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372837518] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:28:09,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321756577] [2021-10-06 16:28:09,247 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 16:28:09,248 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:28:09,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:28:09,249 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:28:09,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2021-10-06 16:28:10,852 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 16:28:10,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:28:10,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 103 conjunts are in the unsatisfiable core [2021-10-06 16:28:10,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:28:11,102 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:28:11,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321756577] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:28:11,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:28:11,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 102 [2021-10-06 16:28:11,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274977541] [2021-10-06 16:28:11,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2021-10-06 16:28:11,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:28:11,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2021-10-06 16:28:11,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2021-10-06 16:28:11,107 INFO L87 Difference]: Start difference. First operand 6312 states and 24424 transitions. Second operand has 104 states, 103 states have (on average 1.029126213592233) internal successors, (106), 103 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:28:18,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:28:18,698 INFO L93 Difference]: Finished difference Result 13992 states and 54767 transitions. [2021-10-06 16:28:18,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-10-06 16:28:18,698 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 103 states have (on average 1.029126213592233) internal successors, (106), 103 states have internal predecessors, (106), 0 states have call successors, (0), 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 103 [2021-10-06 16:28:18,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:28:18,733 INFO L225 Difference]: With dead ends: 13992 [2021-10-06 16:28:18,733 INFO L226 Difference]: Without dead ends: 11972 [2021-10-06 16:28:18,734 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 4007.9ms TimeCoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2021-10-06 16:28:18,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11972 states. [2021-10-06 16:28:18,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11972 to 6372. [2021-10-06 16:28:18,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6372 states, 6357 states have (on average 3.878559068743118) internal successors, (24656), 6371 states have internal predecessors, (24656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:28:18,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6372 states to 6372 states and 24656 transitions. [2021-10-06 16:28:18,882 INFO L78 Accepts]: Start accepts. Automaton has 6372 states and 24656 transitions. Word has length 103 [2021-10-06 16:28:18,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:28:18,883 INFO L470 AbstractCegarLoop]: Abstraction has 6372 states and 24656 transitions. [2021-10-06 16:28:18,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 103 states have (on average 1.029126213592233) internal successors, (106), 103 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:28:18,883 INFO L276 IsEmpty]: Start isEmpty. Operand 6372 states and 24656 transitions. [2021-10-06 16:28:18,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-10-06 16:28:18,892 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:28:18,892 INFO L512 BasicCegarLoop]: trace histogram [101, 1, 1, 1] [2021-10-06 16:28:18,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Forceful destruction successful, exit code 0 [2021-10-06 16:28:19,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2021-10-06 16:28:19,093 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:28:19,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:28:19,094 INFO L82 PathProgramCache]: Analyzing trace with hash -2023520478, now seen corresponding path program 101 times [2021-10-06 16:28:19,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:28:19,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941078529] [2021-10-06 16:28:19,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:28:19,095 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:28:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:28:23,397 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:28:23,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:28:23,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941078529] [2021-10-06 16:28:23,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941078529] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:28:23,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278156310] [2021-10-06 16:28:23,398 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 16:28:23,399 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:28:23,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:28:23,400 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:28:23,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2021-10-06 16:28:25,122 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 52 check-sat command(s) [2021-10-06 16:28:25,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:28:25,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 982 conjuncts, 104 conjunts are in the unsatisfiable core [2021-10-06 16:28:25,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:28:25,379 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:28:25,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278156310] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:28:25,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:28:25,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 103 [2021-10-06 16:28:25,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890930692] [2021-10-06 16:28:25,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2021-10-06 16:28:25,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:28:25,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2021-10-06 16:28:25,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2021-10-06 16:28:25,382 INFO L87 Difference]: Start difference. First operand 6372 states and 24656 transitions. Second operand has 105 states, 104 states have (on average 1.0288461538461537) internal successors, (107), 104 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:28:33,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:28:33,505 INFO L93 Difference]: Finished difference Result 14128 states and 55300 transitions. [2021-10-06 16:28:33,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-10-06 16:28:33,506 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 104 states have (on average 1.0288461538461537) internal successors, (107), 104 states have internal predecessors, (107), 0 states have call successors, (0), 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 104 [2021-10-06 16:28:33,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:28:33,541 INFO L225 Difference]: With dead ends: 14128 [2021-10-06 16:28:33,541 INFO L226 Difference]: Without dead ends: 12088 [2021-10-06 16:28:33,542 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 4086.6ms TimeCoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2021-10-06 16:28:33,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12088 states. [2021-10-06 16:28:33,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12088 to 6432. [2021-10-06 16:28:33,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6432 states, 6417 states have (on average 3.8784478728377745) internal successors, (24888), 6431 states have internal predecessors, (24888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:28:33,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6432 states to 6432 states and 24888 transitions. [2021-10-06 16:28:33,690 INFO L78 Accepts]: Start accepts. Automaton has 6432 states and 24888 transitions. Word has length 104 [2021-10-06 16:28:33,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:28:33,690 INFO L470 AbstractCegarLoop]: Abstraction has 6432 states and 24888 transitions. [2021-10-06 16:28:33,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 104 states have (on average 1.0288461538461537) internal successors, (107), 104 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:28:33,690 INFO L276 IsEmpty]: Start isEmpty. Operand 6432 states and 24888 transitions. [2021-10-06 16:28:33,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-06 16:28:33,700 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:28:33,700 INFO L512 BasicCegarLoop]: trace histogram [102, 1, 1, 1] [2021-10-06 16:28:33,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Forceful destruction successful, exit code 0 [2021-10-06 16:28:33,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118,111 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:28:33,901 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:28:33,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:28:33,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1695375225, now seen corresponding path program 102 times [2021-10-06 16:28:33,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:28:33,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949913661] [2021-10-06 16:28:33,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:28:33,902 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:28:33,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:28:38,267 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:28:38,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:28:38,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949913661] [2021-10-06 16:28:38,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949913661] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:28:38,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971413443] [2021-10-06 16:28:38,268 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 16:28:38,268 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:28:38,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:28:38,269 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:28:38,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2021-10-06 16:28:40,032 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2021-10-06 16:28:40,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:28:40,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 991 conjuncts, 105 conjunts are in the unsatisfiable core [2021-10-06 16:28:40,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:28:40,301 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:28:40,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971413443] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:28:40,302 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:28:40,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 104 [2021-10-06 16:28:40,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106407802] [2021-10-06 16:28:40,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2021-10-06 16:28:40,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:28:40,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2021-10-06 16:28:40,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2021-10-06 16:28:40,306 INFO L87 Difference]: Start difference. First operand 6432 states and 24888 transitions. Second operand has 106 states, 105 states have (on average 1.0285714285714285) internal successors, (108), 105 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:28:48,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:28:48,540 INFO L93 Difference]: Finished difference Result 14264 states and 55833 transitions. [2021-10-06 16:28:48,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-10-06 16:28:48,541 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 105 states have (on average 1.0285714285714285) internal successors, (108), 105 states have internal predecessors, (108), 0 states have call successors, (0), 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 105 [2021-10-06 16:28:48,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:28:48,577 INFO L225 Difference]: With dead ends: 14264 [2021-10-06 16:28:48,577 INFO L226 Difference]: Without dead ends: 12204 [2021-10-06 16:28:48,578 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 4150.9ms TimeCoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2021-10-06 16:28:48,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12204 states. [2021-10-06 16:28:48,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12204 to 6492. [2021-10-06 16:28:48,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6492 states, 6477 states have (on average 3.878338737069631) internal successors, (25120), 6491 states have internal predecessors, (25120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:28:48,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6492 states to 6492 states and 25120 transitions. [2021-10-06 16:28:48,732 INFO L78 Accepts]: Start accepts. Automaton has 6492 states and 25120 transitions. Word has length 105 [2021-10-06 16:28:48,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:28:48,733 INFO L470 AbstractCegarLoop]: Abstraction has 6492 states and 25120 transitions. [2021-10-06 16:28:48,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 105 states have (on average 1.0285714285714285) internal successors, (108), 105 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:28:48,733 INFO L276 IsEmpty]: Start isEmpty. Operand 6492 states and 25120 transitions. [2021-10-06 16:28:48,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-10-06 16:28:48,743 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:28:48,743 INFO L512 BasicCegarLoop]: trace histogram [103, 1, 1, 1] [2021-10-06 16:28:48,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Forceful destruction successful, exit code 0 [2021-10-06 16:28:48,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,112 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:28:48,944 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:28:48,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:28:48,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1017025026, now seen corresponding path program 103 times [2021-10-06 16:28:48,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:28:48,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497880535] [2021-10-06 16:28:48,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:28:48,945 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:28:49,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:28:53,414 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:28:53,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:28:53,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497880535] [2021-10-06 16:28:53,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497880535] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:28:53,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661389659] [2021-10-06 16:28:53,415 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 16:28:53,416 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:28:53,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:28:53,417 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:28:53,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2021-10-06 16:28:55,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:28:55,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 1000 conjuncts, 106 conjunts are in the unsatisfiable core [2021-10-06 16:28:55,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:28:55,405 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:28:55,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661389659] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:28:55,406 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:28:55,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 105 [2021-10-06 16:28:55,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889545371] [2021-10-06 16:28:55,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2021-10-06 16:28:55,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:28:55,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2021-10-06 16:28:55,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2021-10-06 16:28:55,410 INFO L87 Difference]: Start difference. First operand 6492 states and 25120 transitions. Second operand has 107 states, 106 states have (on average 1.028301886792453) internal successors, (109), 106 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:29:03,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:29:03,768 INFO L93 Difference]: Finished difference Result 14400 states and 56366 transitions. [2021-10-06 16:29:03,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2021-10-06 16:29:03,769 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 106 states have (on average 1.028301886792453) internal successors, (109), 106 states have internal predecessors, (109), 0 states have call successors, (0), 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 106 [2021-10-06 16:29:03,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:29:03,805 INFO L225 Difference]: With dead ends: 14400 [2021-10-06 16:29:03,805 INFO L226 Difference]: Without dead ends: 12320 [2021-10-06 16:29:03,806 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 4246.7ms TimeCoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2021-10-06 16:29:03,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12320 states. [2021-10-06 16:29:03,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12320 to 6552. [2021-10-06 16:29:03,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6552 states, 6537 states have (on average 3.8782316047116416) internal successors, (25352), 6551 states have internal predecessors, (25352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:29:03,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6552 states to 6552 states and 25352 transitions. [2021-10-06 16:29:03,959 INFO L78 Accepts]: Start accepts. Automaton has 6552 states and 25352 transitions. Word has length 106 [2021-10-06 16:29:03,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:29:03,960 INFO L470 AbstractCegarLoop]: Abstraction has 6552 states and 25352 transitions. [2021-10-06 16:29:03,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 106 states have (on average 1.028301886792453) internal successors, (109), 106 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:29:03,960 INFO L276 IsEmpty]: Start isEmpty. Operand 6552 states and 25352 transitions. [2021-10-06 16:29:03,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-10-06 16:29:03,971 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:29:03,971 INFO L512 BasicCegarLoop]: trace histogram [104, 1, 1, 1] [2021-10-06 16:29:04,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Ended with exit code 0 [2021-10-06 16:29:04,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable120 [2021-10-06 16:29:04,172 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:29:04,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:29:04,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1463005337, now seen corresponding path program 104 times [2021-10-06 16:29:04,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:29:04,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525328500] [2021-10-06 16:29:04,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:29:04,174 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:29:04,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:29:08,734 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:29:08,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:29:08,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525328500] [2021-10-06 16:29:08,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525328500] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:29:08,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585303857] [2021-10-06 16:29:08,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:29:08,735 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:29:08,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:29:08,736 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:29:08,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2021-10-06 16:29:10,460 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:29:10,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:29:10,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 1009 conjuncts, 107 conjunts are in the unsatisfiable core [2021-10-06 16:29:10,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:29:10,732 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:29:10,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585303857] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:29:10,732 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:29:10,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 106 [2021-10-06 16:29:10,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419916885] [2021-10-06 16:29:10,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2021-10-06 16:29:10,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:29:10,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2021-10-06 16:29:10,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2021-10-06 16:29:10,736 INFO L87 Difference]: Start difference. First operand 6552 states and 25352 transitions. Second operand has 108 states, 107 states have (on average 1.02803738317757) internal successors, (110), 107 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:29:19,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:29:19,499 INFO L93 Difference]: Finished difference Result 14536 states and 56899 transitions. [2021-10-06 16:29:19,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-10-06 16:29:19,499 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 107 states have (on average 1.02803738317757) internal successors, (110), 107 states have internal predecessors, (110), 0 states have call successors, (0), 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 107 [2021-10-06 16:29:19,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:29:19,536 INFO L225 Difference]: With dead ends: 14536 [2021-10-06 16:29:19,536 INFO L226 Difference]: Without dead ends: 12436 [2021-10-06 16:29:19,537 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 4341.3ms TimeCoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2021-10-06 16:29:19,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12436 states. [2021-10-06 16:29:19,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12436 to 6612. [2021-10-06 16:29:19,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6612 states, 6597 states have (on average 3.8781264211005) internal successors, (25584), 6611 states have internal predecessors, (25584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:29:19,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6612 states to 6612 states and 25584 transitions. [2021-10-06 16:29:19,695 INFO L78 Accepts]: Start accepts. Automaton has 6612 states and 25584 transitions. Word has length 107 [2021-10-06 16:29:19,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:29:19,696 INFO L470 AbstractCegarLoop]: Abstraction has 6612 states and 25584 transitions. [2021-10-06 16:29:19,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 107 states have (on average 1.02803738317757) internal successors, (110), 107 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:29:19,696 INFO L276 IsEmpty]: Start isEmpty. Operand 6612 states and 25584 transitions. [2021-10-06 16:29:19,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-10-06 16:29:19,706 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:29:19,706 INFO L512 BasicCegarLoop]: trace histogram [105, 1, 1, 1] [2021-10-06 16:29:19,737 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Ended with exit code 0 [2021-10-06 16:29:19,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,114 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:29:19,907 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:29:19,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:29:19,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1891474206, now seen corresponding path program 105 times [2021-10-06 16:29:19,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:29:19,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068278645] [2021-10-06 16:29:19,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:29:19,909 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:29:19,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:29:24,550 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:29:24,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:29:24,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068278645] [2021-10-06 16:29:24,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068278645] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:29:24,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573356523] [2021-10-06 16:29:24,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:29:24,551 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:29:24,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:29:24,552 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:29:24,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2021-10-06 16:29:26,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2021-10-06 16:29:26,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:29:26,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 1018 conjuncts, 108 conjunts are in the unsatisfiable core [2021-10-06 16:29:26,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:29:26,702 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:29:26,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573356523] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:29:26,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:29:26,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 107 [2021-10-06 16:29:26,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384007448] [2021-10-06 16:29:26,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2021-10-06 16:29:26,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:29:26,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2021-10-06 16:29:26,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2021-10-06 16:29:26,706 INFO L87 Difference]: Start difference. First operand 6612 states and 25584 transitions. Second operand has 109 states, 108 states have (on average 1.0277777777777777) internal successors, (111), 108 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:29:35,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:29:35,547 INFO L93 Difference]: Finished difference Result 14672 states and 57432 transitions. [2021-10-06 16:29:35,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-10-06 16:29:35,547 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 108 states have (on average 1.0277777777777777) internal successors, (111), 108 states have internal predecessors, (111), 0 states have call successors, (0), 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 108 [2021-10-06 16:29:35,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:29:35,584 INFO L225 Difference]: With dead ends: 14672 [2021-10-06 16:29:35,584 INFO L226 Difference]: Without dead ends: 12552 [2021-10-06 16:29:35,585 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 4424.6ms TimeCoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2021-10-06 16:29:35,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12552 states. [2021-10-06 16:29:35,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12552 to 6672. [2021-10-06 16:29:35,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6672 states, 6657 states have (on average 3.878023133543638) internal successors, (25816), 6671 states have internal predecessors, (25816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:29:35,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6672 states to 6672 states and 25816 transitions. [2021-10-06 16:29:35,743 INFO L78 Accepts]: Start accepts. Automaton has 6672 states and 25816 transitions. Word has length 108 [2021-10-06 16:29:35,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:29:35,743 INFO L470 AbstractCegarLoop]: Abstraction has 6672 states and 25816 transitions. [2021-10-06 16:29:35,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 108 states have (on average 1.0277777777777777) internal successors, (111), 108 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:29:35,743 INFO L276 IsEmpty]: Start isEmpty. Operand 6672 states and 25816 transitions. [2021-10-06 16:29:35,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-10-06 16:29:35,753 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:29:35,754 INFO L512 BasicCegarLoop]: trace histogram [106, 1, 1, 1] [2021-10-06 16:29:35,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Ended with exit code 0 [2021-10-06 16:29:35,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 115 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2021-10-06 16:29:35,961 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:29:35,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:29:35,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1493842361, now seen corresponding path program 106 times [2021-10-06 16:29:35,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:29:35,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362911016] [2021-10-06 16:29:35,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:29:35,963 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:29:36,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:29:40,754 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:29:40,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:29:40,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362911016] [2021-10-06 16:29:40,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362911016] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:29:40,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732579772] [2021-10-06 16:29:40,755 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 16:29:40,755 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:29:40,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:29:40,756 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:29:40,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2021-10-06 16:29:42,559 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 16:29:42,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:29:42,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 109 conjunts are in the unsatisfiable core [2021-10-06 16:29:42,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:29:42,825 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:29:42,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732579772] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:29:42,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:29:42,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 108 [2021-10-06 16:29:42,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825923338] [2021-10-06 16:29:42,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2021-10-06 16:29:42,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:29:42,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2021-10-06 16:29:42,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2021-10-06 16:29:42,828 INFO L87 Difference]: Start difference. First operand 6672 states and 25816 transitions. Second operand has 110 states, 109 states have (on average 1.0275229357798166) internal successors, (112), 109 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:29:52,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:29:52,404 INFO L93 Difference]: Finished difference Result 14808 states and 57965 transitions. [2021-10-06 16:29:52,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2021-10-06 16:29:52,405 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 109 states have (on average 1.0275229357798166) internal successors, (112), 109 states have internal predecessors, (112), 0 states have call successors, (0), 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 109 [2021-10-06 16:29:52,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:29:52,442 INFO L225 Difference]: With dead ends: 14808 [2021-10-06 16:29:52,443 INFO L226 Difference]: Without dead ends: 12668 [2021-10-06 16:29:52,443 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 4563.0ms TimeCoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2021-10-06 16:29:52,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12668 states. [2021-10-06 16:29:52,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12668 to 6732. [2021-10-06 16:29:52,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6732 states, 6717 states have (on average 3.8779216912312044) internal successors, (26048), 6731 states have internal predecessors, (26048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:29:52,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6732 states to 6732 states and 26048 transitions. [2021-10-06 16:29:52,606 INFO L78 Accepts]: Start accepts. Automaton has 6732 states and 26048 transitions. Word has length 109 [2021-10-06 16:29:52,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:29:52,606 INFO L470 AbstractCegarLoop]: Abstraction has 6732 states and 26048 transitions. [2021-10-06 16:29:52,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 109 states have (on average 1.0275229357798166) internal successors, (112), 109 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:29:52,606 INFO L276 IsEmpty]: Start isEmpty. Operand 6732 states and 26048 transitions. [2021-10-06 16:29:52,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-06 16:29:52,616 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:29:52,616 INFO L512 BasicCegarLoop]: trace histogram [107, 1, 1, 1] [2021-10-06 16:29:52,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Ended with exit code 0 [2021-10-06 16:29:52,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2021-10-06 16:29:52,817 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:29:52,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:29:52,818 INFO L82 PathProgramCache]: Analyzing trace with hash -935526462, now seen corresponding path program 107 times [2021-10-06 16:29:52,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:29:52,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818272928] [2021-10-06 16:29:52,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:29:52,819 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:29:52,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:29:57,612 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:29:57,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:29:57,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818272928] [2021-10-06 16:29:57,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818272928] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:29:57,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916614878] [2021-10-06 16:29:57,613 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 16:29:57,613 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:29:57,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:29:57,614 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:29:57,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2021-10-06 16:29:59,514 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2021-10-06 16:29:59,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:29:59,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 1036 conjuncts, 110 conjunts are in the unsatisfiable core [2021-10-06 16:29:59,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:29:59,790 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:29:59,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916614878] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:29:59,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:29:59,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 109 [2021-10-06 16:29:59,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763518846] [2021-10-06 16:29:59,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2021-10-06 16:29:59,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:29:59,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2021-10-06 16:29:59,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2021-10-06 16:29:59,795 INFO L87 Difference]: Start difference. First operand 6732 states and 26048 transitions. Second operand has 111 states, 110 states have (on average 1.0272727272727273) internal successors, (113), 110 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:30:09,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:30:09,825 INFO L93 Difference]: Finished difference Result 14944 states and 58498 transitions. [2021-10-06 16:30:09,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2021-10-06 16:30:09,826 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 110 states have (on average 1.0272727272727273) internal successors, (113), 110 states have internal predecessors, (113), 0 states have call successors, (0), 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 110 [2021-10-06 16:30:09,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:30:09,863 INFO L225 Difference]: With dead ends: 14944 [2021-10-06 16:30:09,864 INFO L226 Difference]: Without dead ends: 12784 [2021-10-06 16:30:09,865 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 4574.1ms TimeCoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2021-10-06 16:30:09,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12784 states. [2021-10-06 16:30:09,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12784 to 6792. [2021-10-06 16:30:10,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6792 states, 6777 states have (on average 3.8778220451527226) internal successors, (26280), 6791 states have internal predecessors, (26280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:30:10,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6792 states to 6792 states and 26280 transitions. [2021-10-06 16:30:10,026 INFO L78 Accepts]: Start accepts. Automaton has 6792 states and 26280 transitions. Word has length 110 [2021-10-06 16:30:10,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:30:10,026 INFO L470 AbstractCegarLoop]: Abstraction has 6792 states and 26280 transitions. [2021-10-06 16:30:10,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 110 states have (on average 1.0272727272727273) internal successors, (113), 110 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:30:10,026 INFO L276 IsEmpty]: Start isEmpty. Operand 6792 states and 26280 transitions. [2021-10-06 16:30:10,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-10-06 16:30:10,037 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:30:10,037 INFO L512 BasicCegarLoop]: trace histogram [108, 1, 1, 1] [2021-10-06 16:30:10,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Forceful destruction successful, exit code 0 [2021-10-06 16:30:10,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 117 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2021-10-06 16:30:10,238 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:30:10,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:30:10,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1063451353, now seen corresponding path program 108 times [2021-10-06 16:30:10,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:30:10,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542740504] [2021-10-06 16:30:10,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:30:10,240 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:30:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:30:15,212 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:30:15,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:30:15,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542740504] [2021-10-06 16:30:15,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542740504] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:30:15,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525538911] [2021-10-06 16:30:15,213 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 16:30:15,214 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:30:15,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:30:15,215 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:30:15,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2021-10-06 16:30:17,183 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2021-10-06 16:30:17,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:30:17,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 1045 conjuncts, 111 conjunts are in the unsatisfiable core [2021-10-06 16:30:17,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:30:17,455 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:30:17,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525538911] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:30:17,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:30:17,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 110 [2021-10-06 16:30:17,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276873100] [2021-10-06 16:30:17,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2021-10-06 16:30:17,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:30:17,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2021-10-06 16:30:17,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2021-10-06 16:30:17,459 INFO L87 Difference]: Start difference. First operand 6792 states and 26280 transitions. Second operand has 112 states, 111 states have (on average 1.027027027027027) internal successors, (114), 111 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:30:27,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:30:27,267 INFO L93 Difference]: Finished difference Result 15080 states and 59031 transitions. [2021-10-06 16:30:27,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-10-06 16:30:27,267 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 111 states have (on average 1.027027027027027) internal successors, (114), 111 states have internal predecessors, (114), 0 states have call successors, (0), 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 111 [2021-10-06 16:30:27,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:30:27,306 INFO L225 Difference]: With dead ends: 15080 [2021-10-06 16:30:27,306 INFO L226 Difference]: Without dead ends: 12900 [2021-10-06 16:30:27,307 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 4650.9ms TimeCoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2021-10-06 16:30:27,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12900 states. [2021-10-06 16:30:27,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12900 to 6852. [2021-10-06 16:30:27,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6852 states, 6837 states have (on average 3.8777241480181366) internal successors, (26512), 6851 states have internal predecessors, (26512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:30:27,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6852 states to 6852 states and 26512 transitions. [2021-10-06 16:30:27,470 INFO L78 Accepts]: Start accepts. Automaton has 6852 states and 26512 transitions. Word has length 111 [2021-10-06 16:30:27,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:30:27,470 INFO L470 AbstractCegarLoop]: Abstraction has 6852 states and 26512 transitions. [2021-10-06 16:30:27,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 111 states have (on average 1.027027027027027) internal successors, (114), 111 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:30:27,470 INFO L276 IsEmpty]: Start isEmpty. Operand 6852 states and 26512 transitions. [2021-10-06 16:30:27,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-10-06 16:30:27,481 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:30:27,481 INFO L512 BasicCegarLoop]: trace histogram [109, 1, 1, 1] [2021-10-06 16:30:27,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Forceful destruction successful, exit code 0 [2021-10-06 16:30:27,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2021-10-06 16:30:27,682 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:30:27,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:30:27,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1392745822, now seen corresponding path program 109 times [2021-10-06 16:30:27,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:30:27,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729086902] [2021-10-06 16:30:27,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:30:27,684 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:30:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:30:32,672 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:30:32,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:30:32,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729086902] [2021-10-06 16:30:32,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729086902] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:30:32,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958144210] [2021-10-06 16:30:32,673 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 16:30:32,673 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:30:32,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:30:32,675 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:30:32,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2021-10-06 16:30:34,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:30:34,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 112 conjunts are in the unsatisfiable core [2021-10-06 16:30:34,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:30:34,827 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:30:34,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958144210] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:30:34,828 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:30:34,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 111 [2021-10-06 16:30:34,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968538798] [2021-10-06 16:30:34,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2021-10-06 16:30:34,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:30:34,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2021-10-06 16:30:34,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2021-10-06 16:30:34,833 INFO L87 Difference]: Start difference. First operand 6852 states and 26512 transitions. Second operand has 113 states, 112 states have (on average 1.0267857142857142) internal successors, (115), 112 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:30:44,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:30:44,782 INFO L93 Difference]: Finished difference Result 15216 states and 59564 transitions. [2021-10-06 16:30:44,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2021-10-06 16:30:44,782 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 112 states have (on average 1.0267857142857142) internal successors, (115), 112 states have internal predecessors, (115), 0 states have call successors, (0), 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 112 [2021-10-06 16:30:44,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:30:44,822 INFO L225 Difference]: With dead ends: 15216 [2021-10-06 16:30:44,822 INFO L226 Difference]: Without dead ends: 13016 [2021-10-06 16:30:44,823 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 4751.2ms TimeCoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2021-10-06 16:30:44,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13016 states. [2021-10-06 16:30:44,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13016 to 6912. [2021-10-06 16:30:44,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6912 states, 6897 states have (on average 3.877627954182978) internal successors, (26744), 6911 states have internal predecessors, (26744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:30:44,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6912 states to 6912 states and 26744 transitions. [2021-10-06 16:30:44,987 INFO L78 Accepts]: Start accepts. Automaton has 6912 states and 26744 transitions. Word has length 112 [2021-10-06 16:30:44,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:30:44,987 INFO L470 AbstractCegarLoop]: Abstraction has 6912 states and 26744 transitions. [2021-10-06 16:30:44,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 112 states have (on average 1.0267857142857142) internal successors, (115), 112 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:30:44,987 INFO L276 IsEmpty]: Start isEmpty. Operand 6912 states and 26744 transitions. [2021-10-06 16:30:44,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-10-06 16:30:44,999 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:30:44,999 INFO L512 BasicCegarLoop]: trace histogram [110, 1, 1, 1] [2021-10-06 16:30:45,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Forceful destruction successful, exit code 0 [2021-10-06 16:30:45,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2021-10-06 16:30:45,207 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:30:45,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:30:45,208 INFO L82 PathProgramCache]: Analyzing trace with hash -225446919, now seen corresponding path program 110 times [2021-10-06 16:30:45,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:30:45,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705633577] [2021-10-06 16:30:45,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:30:45,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:30:45,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:30:50,276 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:30:50,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:30:50,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705633577] [2021-10-06 16:30:50,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705633577] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:30:50,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869125203] [2021-10-06 16:30:50,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:30:50,278 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:30:50,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:30:50,279 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:30:50,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2021-10-06 16:30:52,203 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:30:52,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:30:52,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 1063 conjuncts, 113 conjunts are in the unsatisfiable core [2021-10-06 16:30:52,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:30:52,471 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:30:52,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869125203] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:30:52,471 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:30:52,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 112 [2021-10-06 16:30:52,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591041834] [2021-10-06 16:30:52,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2021-10-06 16:30:52,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:30:52,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2021-10-06 16:30:52,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2021-10-06 16:30:52,476 INFO L87 Difference]: Start difference. First operand 6912 states and 26744 transitions. Second operand has 114 states, 113 states have (on average 1.0265486725663717) internal successors, (116), 113 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:31:02,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:31:02,802 INFO L93 Difference]: Finished difference Result 15352 states and 60097 transitions. [2021-10-06 16:31:02,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-10-06 16:31:02,803 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 113 states have (on average 1.0265486725663717) internal successors, (116), 113 states have internal predecessors, (116), 0 states have call successors, (0), 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 113 [2021-10-06 16:31:02,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:31:02,842 INFO L225 Difference]: With dead ends: 15352 [2021-10-06 16:31:02,842 INFO L226 Difference]: Without dead ends: 13132 [2021-10-06 16:31:02,843 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 4831.3ms TimeCoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2021-10-06 16:31:02,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13132 states. [2021-10-06 16:31:03,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13132 to 6972. [2021-10-06 16:31:03,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6972 states, 6957 states have (on average 3.877533419577404) internal successors, (26976), 6971 states have internal predecessors, (26976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:31:03,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6972 states to 6972 states and 26976 transitions. [2021-10-06 16:31:03,136 INFO L78 Accepts]: Start accepts. Automaton has 6972 states and 26976 transitions. Word has length 113 [2021-10-06 16:31:03,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:31:03,137 INFO L470 AbstractCegarLoop]: Abstraction has 6972 states and 26976 transitions. [2021-10-06 16:31:03,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 113 states have (on average 1.0265486725663717) internal successors, (116), 113 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:31:03,137 INFO L276 IsEmpty]: Start isEmpty. Operand 6972 states and 26976 transitions. [2021-10-06 16:31:03,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-10-06 16:31:03,149 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:31:03,149 INFO L512 BasicCegarLoop]: trace histogram [111, 1, 1, 1] [2021-10-06 16:31:03,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Forceful destruction successful, exit code 0 [2021-10-06 16:31:03,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable127 [2021-10-06 16:31:03,354 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:31:03,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:31:03,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1601080706, now seen corresponding path program 111 times [2021-10-06 16:31:03,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:31:03,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080494437] [2021-10-06 16:31:03,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:31:03,357 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:31:03,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:31:08,515 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:31:08,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:31:08,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080494437] [2021-10-06 16:31:08,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080494437] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:31:08,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934984847] [2021-10-06 16:31:08,517 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:31:08,517 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:31:08,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:31:08,518 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:31:08,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2021-10-06 16:31:10,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 57 check-sat command(s) [2021-10-06 16:31:10,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:31:10,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 1072 conjuncts, 114 conjunts are in the unsatisfiable core [2021-10-06 16:31:10,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:31:10,878 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:31:10,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934984847] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:31:10,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:31:10,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 113 [2021-10-06 16:31:10,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501859097] [2021-10-06 16:31:10,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2021-10-06 16:31:10,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:31:10,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2021-10-06 16:31:10,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2021-10-06 16:31:10,882 INFO L87 Difference]: Start difference. First operand 6972 states and 26976 transitions. Second operand has 115 states, 114 states have (on average 1.0263157894736843) internal successors, (117), 114 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:31:21,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:31:21,503 INFO L93 Difference]: Finished difference Result 15488 states and 60630 transitions. [2021-10-06 16:31:21,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2021-10-06 16:31:21,503 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 114 states have (on average 1.0263157894736843) internal successors, (117), 114 states have internal predecessors, (117), 0 states have call successors, (0), 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 114 [2021-10-06 16:31:21,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:31:21,542 INFO L225 Difference]: With dead ends: 15488 [2021-10-06 16:31:21,543 INFO L226 Difference]: Without dead ends: 13248 [2021-10-06 16:31:21,543 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 4918.8ms TimeCoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2021-10-06 16:31:21,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13248 states. [2021-10-06 16:31:21,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13248 to 7032. [2021-10-06 16:31:21,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7032 states, 7017 states have (on average 3.877440501638877) internal successors, (27208), 7031 states have internal predecessors, (27208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:31:21,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7032 states to 7032 states and 27208 transitions. [2021-10-06 16:31:21,871 INFO L78 Accepts]: Start accepts. Automaton has 7032 states and 27208 transitions. Word has length 114 [2021-10-06 16:31:21,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:31:21,871 INFO L470 AbstractCegarLoop]: Abstraction has 7032 states and 27208 transitions. [2021-10-06 16:31:21,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 114 states have (on average 1.0263157894736843) internal successors, (117), 114 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:31:21,871 INFO L276 IsEmpty]: Start isEmpty. Operand 7032 states and 27208 transitions. [2021-10-06 16:31:21,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-06 16:31:21,883 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:31:21,883 INFO L512 BasicCegarLoop]: trace histogram [112, 1, 1, 1] [2021-10-06 16:31:21,914 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Ended with exit code 0 [2021-10-06 16:31:22,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2021-10-06 16:31:22,084 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:31:22,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:31:22,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1906105063, now seen corresponding path program 112 times [2021-10-06 16:31:22,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:31:22,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461738566] [2021-10-06 16:31:22,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:31:22,086 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:31:22,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:31:27,315 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 0 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:31:27,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:31:27,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461738566] [2021-10-06 16:31:27,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461738566] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:31:27,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498404072] [2021-10-06 16:31:27,316 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 16:31:27,316 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:31:27,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:31:27,318 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:31:27,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2021-10-06 16:31:29,321 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 16:31:29,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:31:29,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 1081 conjuncts, 115 conjunts are in the unsatisfiable core [2021-10-06 16:31:29,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:31:29,607 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 0 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:31:29,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498404072] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:31:29,607 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:31:29,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 114 [2021-10-06 16:31:29,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732552308] [2021-10-06 16:31:29,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2021-10-06 16:31:29,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:31:29,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2021-10-06 16:31:29,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2021-10-06 16:31:29,611 INFO L87 Difference]: Start difference. First operand 7032 states and 27208 transitions. Second operand has 116 states, 115 states have (on average 1.0260869565217392) internal successors, (118), 115 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:31:41,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:31:41,483 INFO L93 Difference]: Finished difference Result 15624 states and 61163 transitions. [2021-10-06 16:31:41,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2021-10-06 16:31:41,488 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 115 states have (on average 1.0260869565217392) internal successors, (118), 115 states have internal predecessors, (118), 0 states have call successors, (0), 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 115 [2021-10-06 16:31:41,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:31:41,533 INFO L225 Difference]: With dead ends: 15624 [2021-10-06 16:31:41,533 INFO L226 Difference]: Without dead ends: 13364 [2021-10-06 16:31:41,534 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 4986.5ms TimeCoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2021-10-06 16:31:41,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13364 states. [2021-10-06 16:31:41,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13364 to 7092. [2021-10-06 16:31:41,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7092 states, 7077 states have (on average 3.877349159248269) internal successors, (27440), 7091 states have internal predecessors, (27440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:31:41,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7092 states to 7092 states and 27440 transitions. [2021-10-06 16:31:41,722 INFO L78 Accepts]: Start accepts. Automaton has 7092 states and 27440 transitions. Word has length 115 [2021-10-06 16:31:41,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:31:41,722 INFO L470 AbstractCegarLoop]: Abstraction has 7092 states and 27440 transitions. [2021-10-06 16:31:41,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 115 states have (on average 1.0260869565217392) internal successors, (118), 115 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:31:41,722 INFO L276 IsEmpty]: Start isEmpty. Operand 7092 states and 27440 transitions. [2021-10-06 16:31:41,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-10-06 16:31:41,734 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:31:41,734 INFO L512 BasicCegarLoop]: trace histogram [113, 1, 1, 1] [2021-10-06 16:31:41,765 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Ended with exit code 0 [2021-10-06 16:31:41,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2021-10-06 16:31:41,934 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:31:41,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:31:41,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1040285794, now seen corresponding path program 113 times [2021-10-06 16:31:41,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:31:41,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627140201] [2021-10-06 16:31:41,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:31:41,936 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:31:41,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:31:47,298 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:31:47,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:31:47,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627140201] [2021-10-06 16:31:47,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627140201] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:31:47,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051854398] [2021-10-06 16:31:47,299 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 16:31:47,299 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:31:47,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:31:47,300 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:31:47,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2021-10-06 16:31:49,418 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2021-10-06 16:31:49,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:31:49,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 116 conjunts are in the unsatisfiable core [2021-10-06 16:31:49,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:31:49,719 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:31:49,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051854398] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:31:49,720 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:31:49,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 115 [2021-10-06 16:31:49,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510791142] [2021-10-06 16:31:49,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 117 states [2021-10-06 16:31:49,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:31:49,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2021-10-06 16:31:49,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2021-10-06 16:31:49,723 INFO L87 Difference]: Start difference. First operand 7092 states and 27440 transitions. Second operand has 117 states, 116 states have (on average 1.0258620689655173) internal successors, (119), 116 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:32:00,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:32:00,870 INFO L93 Difference]: Finished difference Result 15760 states and 61696 transitions. [2021-10-06 16:32:00,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2021-10-06 16:32:00,871 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 116 states have (on average 1.0258620689655173) internal successors, (119), 116 states have internal predecessors, (119), 0 states have call successors, (0), 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 116 [2021-10-06 16:32:00,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:32:00,911 INFO L225 Difference]: With dead ends: 15760 [2021-10-06 16:32:00,911 INFO L226 Difference]: Without dead ends: 13480 [2021-10-06 16:32:00,911 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 5124.7ms TimeCoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2021-10-06 16:32:00,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13480 states. [2021-10-06 16:32:01,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13480 to 7152. [2021-10-06 16:32:01,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7152 states, 7137 states have (on average 3.8772593526691885) internal successors, (27672), 7151 states have internal predecessors, (27672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:32:01,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7152 states to 7152 states and 27672 transitions. [2021-10-06 16:32:01,081 INFO L78 Accepts]: Start accepts. Automaton has 7152 states and 27672 transitions. Word has length 116 [2021-10-06 16:32:01,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:32:01,081 INFO L470 AbstractCegarLoop]: Abstraction has 7152 states and 27672 transitions. [2021-10-06 16:32:01,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 117 states, 116 states have (on average 1.0258620689655173) internal successors, (119), 116 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:32:01,082 INFO L276 IsEmpty]: Start isEmpty. Operand 7152 states and 27672 transitions. [2021-10-06 16:32:01,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-10-06 16:32:01,093 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:32:01,093 INFO L512 BasicCegarLoop]: trace histogram [114, 1, 1, 1] [2021-10-06 16:32:01,125 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Ended with exit code 0 [2021-10-06 16:32:01,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,123 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:32:01,294 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:32:01,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:32:01,295 INFO L82 PathProgramCache]: Analyzing trace with hash -2110878151, now seen corresponding path program 114 times [2021-10-06 16:32:01,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:32:01,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314379580] [2021-10-06 16:32:01,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:32:01,296 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:32:01,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:32:06,750 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 0 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:32:06,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:32:06,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314379580] [2021-10-06 16:32:06,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314379580] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:32:06,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476566184] [2021-10-06 16:32:06,751 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 16:32:06,751 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:32:06,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:32:06,754 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:32:06,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2021-10-06 16:32:08,904 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 58 check-sat command(s) [2021-10-06 16:32:08,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:32:08,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 1099 conjuncts, 117 conjunts are in the unsatisfiable core [2021-10-06 16:32:08,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:32:09,196 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 0 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:32:09,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476566184] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:32:09,196 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:32:09,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 116 [2021-10-06 16:32:09,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230068215] [2021-10-06 16:32:09,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2021-10-06 16:32:09,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:32:09,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2021-10-06 16:32:09,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2021-10-06 16:32:09,200 INFO L87 Difference]: Start difference. First operand 7152 states and 27672 transitions. Second operand has 118 states, 117 states have (on average 1.0256410256410255) internal successors, (120), 117 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:32:20,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:32:20,747 INFO L93 Difference]: Finished difference Result 15896 states and 62229 transitions. [2021-10-06 16:32:20,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-10-06 16:32:20,747 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 117 states have (on average 1.0256410256410255) internal successors, (120), 117 states have internal predecessors, (120), 0 states have call successors, (0), 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 117 [2021-10-06 16:32:20,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:32:20,788 INFO L225 Difference]: With dead ends: 15896 [2021-10-06 16:32:20,788 INFO L226 Difference]: Without dead ends: 13596 [2021-10-06 16:32:20,789 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 5212.7ms TimeCoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2021-10-06 16:32:20,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13596 states. [2021-10-06 16:32:20,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13596 to 7212. [2021-10-06 16:32:20,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7212 states, 7197 states have (on average 3.877171043490343) internal successors, (27904), 7211 states have internal predecessors, (27904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:32:20,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7212 states to 7212 states and 27904 transitions. [2021-10-06 16:32:20,967 INFO L78 Accepts]: Start accepts. Automaton has 7212 states and 27904 transitions. Word has length 117 [2021-10-06 16:32:20,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:32:20,967 INFO L470 AbstractCegarLoop]: Abstraction has 7212 states and 27904 transitions. [2021-10-06 16:32:20,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 117 states have (on average 1.0256410256410255) internal successors, (120), 117 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:32:20,968 INFO L276 IsEmpty]: Start isEmpty. Operand 7212 states and 27904 transitions. [2021-10-06 16:32:20,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-10-06 16:32:20,979 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:32:20,979 INFO L512 BasicCegarLoop]: trace histogram [115, 1, 1, 1] [2021-10-06 16:32:21,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Forceful destruction successful, exit code 0 [2021-10-06 16:32:21,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,124 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:32:21,180 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-06 16:32:21,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:32:21,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1012712638, now seen corresponding path program 115 times [2021-10-06 16:32:21,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:32:21,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894712141] [2021-10-06 16:32:21,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:32:21,182 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:32:21,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:32:26,794 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:32:26,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:32:26,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894712141] [2021-10-06 16:32:26,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894712141] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:32:26,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354177119] [2021-10-06 16:32:26,796 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 16:32:26,796 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:32:26,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:32:26,797 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:32:26,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process Received shutdown request... [2021-10-06 16:32:28,705 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-06 16:32:28,713 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-06 16:32:28,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:32:28,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 1108 conjuncts, 118 conjunts are in the unsatisfiable core [2021-10-06 16:32:28,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:32:28,900 WARN L223 SmtUtils]: Removed 1 from assertion stack [2021-10-06 16:32:28,902 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:32:28,938 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Ended with exit code 0 [2021-10-06 16:32:29,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,125 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:32:29,109 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 119 with TraceHistMax 115,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. [2021-10-06 16:32:29,112 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:32:29,112 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:32:29,113 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:32:29,113 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:32:29,113 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:32:29,113 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:32:29,113 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:32:29,113 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:32:29,113 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:32:29,113 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:32:29,114 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:32:29,114 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:32:29,114 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-06 16:32:29,114 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-06 16:32:29,114 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-06 16:32:29,114 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-06 16:32:29,114 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:32:29,114 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:32:29,114 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:32:29,114 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:32:29,115 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:32:29,115 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:32:29,115 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:32:29,115 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:32:29,115 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:32:29,115 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:32:29,115 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:32:29,115 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:32:29,115 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:32:29,116 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:32:29,116 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:32:29,116 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:32:29,116 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:32:29,116 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:32:29,116 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:32:29,121 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-06 16:32:29,122 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-06 16:32:29,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 04:32:29 BasicIcfg [2021-10-06 16:32:29,123 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-06 16:32:29,123 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.witnessprinter [2021-10-06 16:32:29,125 INFO L168 Benchmark]: Toolchain (without parser) took 764454.66 ms. Allocated memory was 158.3 MB in the beginning and 2.8 GB in the end (delta: 2.6 GB). Free memory was 132.8 MB in the beginning and 2.2 GB in the end (delta: -2.1 GB). Peak memory consumption was 571.4 MB. Max. memory is 8.0 GB. [2021-10-06 16:32:29,126 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 158.3 MB. Free memory was 129.7 MB in the beginning and 129.7 MB in the end (delta: 80.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 16:32:29,126 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.74 ms. Allocated memory is still 158.3 MB. Free memory was 132.6 MB in the beginning and 122.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-06 16:32:29,126 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.89 ms. Allocated memory is still 158.3 MB. Free memory was 122.1 MB in the beginning and 120.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 16:32:29,127 INFO L168 Benchmark]: Boogie Preprocessor took 79.28 ms. Allocated memory is still 158.3 MB. Free memory was 120.3 MB in the beginning and 118.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-06 16:32:29,127 INFO L168 Benchmark]: RCFGBuilder took 1095.14 ms. Allocated memory is still 158.3 MB. Free memory was 118.8 MB in the beginning and 124.7 MB in the end (delta: -5.8 MB). Peak memory consumption was 15.2 MB. Max. memory is 8.0 GB. [2021-10-06 16:32:29,127 INFO L168 Benchmark]: TraceAbstraction took 762851.89 ms. Allocated memory was 158.3 MB in the beginning and 2.8 GB in the end (delta: 2.6 GB). Free memory was 124.1 MB in the beginning and 2.2 GB in the end (delta: -2.1 GB). Peak memory consumption was 562.5 MB. Max. memory is 8.0 GB. [2021-10-06 16:32:29,129 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 158.3 MB. Free memory was 129.7 MB in the beginning and 129.7 MB in the end (delta: 80.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 345.74 ms. Allocated memory is still 158.3 MB. Free memory was 132.6 MB in the beginning and 122.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 62.89 ms. Allocated memory is still 158.3 MB. Free memory was 122.1 MB in the beginning and 120.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 79.28 ms. Allocated memory is still 158.3 MB. Free memory was 120.3 MB in the beginning and 118.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1095.14 ms. Allocated memory is still 158.3 MB. Free memory was 118.8 MB in the beginning and 124.7 MB in the end (delta: -5.8 MB). Peak memory consumption was 15.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 762851.89 ms. Allocated memory was 158.3 MB in the beginning and 2.8 GB in the end (delta: 2.6 GB). Free memory was 124.1 MB in the beginning and 2.2 GB in the end (delta: -2.1 GB). Peak memory consumption was 562.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6907.2ms, 134 PlacesBefore, 54 PlacesAfterwards, 131 TransitionsBefore, 45 TransitionsAfterwards, 2160 CoEnabledTransitionPairs, 7 FixpointIterations, 59 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 8 ConcurrentYvCompositions, 6 ChoiceCompositions, 116 TotalNumberOfCompositions, 3092 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3092, positive: 3092, positive conditional: 0, positive unconditional: 3092, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1043, positive: 1043, positive conditional: 0, positive unconditional: 1043, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1043, positive: 1043, positive conditional: 0, positive unconditional: 1043, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3092, positive: 2049, positive conditional: 0, positive unconditional: 2049, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1043, unknown conditional: 0, unknown unconditional: 1043] , Statistics on independence cache: Total cache size (in pairs): 196, Positive cache size: 196, Positive conditional cache size: 0, Positive unconditional cache size: 196, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 42]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 119 with TraceHistMax 115,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. - TimeoutResultAtElement [Line: 42]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 119 with TraceHistMax 115,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 119 with TraceHistMax 115,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 119 with TraceHistMax 115,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. - TimeoutResultAtElement [Line: 52]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 119 with TraceHistMax 115,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. - TimeoutResultAtElement [Line: 52]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 119 with TraceHistMax 115,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. - TimeoutResultAtElement [Line: 53]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 119 with TraceHistMax 115,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. - TimeoutResultAtElement [Line: 53]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 119 with TraceHistMax 115,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. - TimeoutResultAtElement [Line: 61]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 119 with TraceHistMax 115,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. - TimeoutResultAtElement [Line: 61]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 119 with TraceHistMax 115,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. - TimeoutResultAtElement [Line: 62]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 119 with TraceHistMax 115,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. - TimeoutResultAtElement [Line: 62]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 119 with TraceHistMax 115,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 119 with TraceHistMax 115,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 119 with TraceHistMax 115,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 119 with TraceHistMax 115,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 119 with TraceHistMax 115,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 119 with TraceHistMax 115,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 119 with TraceHistMax 115,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 119 with TraceHistMax 115,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 119 with TraceHistMax 115,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 158 locations, 36 error locations. Started 1 CEGAR loops. OverallTime: 762652.8ms, OverallIterations: 133, TraceHistogramMax: 115, EmptinessCheckTime: 786.2ms, AutomataDifference: 363861.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7176.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 16186 SDtfs, 393654 SDslu, 153005 SDs, 0 SdLazy, 29752 SolverSat, 76565 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 40908.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13556 GetRequests, 6733 SyntacticMatches, 0 SemanticMatches, 6823 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12890 ImplicationChecksByTransitivity, 209324.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=7212occurred in iteration=132, InterpolantAutomatonStates: 6957, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 17709.7ms AutomataMinimizationTime, 132 MinimizatonAttempts, 403716 StatesRemovedByMinimization, 127 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 2299.1ms SsaConstructionTime, 14468.7ms SatisfiabilityAnalysisTime, 240597.4ms InterpolantComputationTime, 14007 NumberOfCodeBlocks, 13995 NumberOfCodeBlocksAsserted, 1984 NumberOfCheckSat, 13752 ConstructedInterpolants, 0 QuantifiedInterpolants, 41224 SizeOfPredicates, 15 NumberOfNonLiveVariables, 68318 ConjunctsInSsa, 6948 ConjunctsInUnsatCore, 255 InterpolantComputations, 14 PerfectInterpolantSequences, 36/506977 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown