/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 [2021-10-07 15:08:02,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 15:08:02,544 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 15:08:02,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-07 15:08:02,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-07 15:08:02,710 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-07 15:08:02,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-07 15:08:02,718 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-07 15:08:02,768 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 15:08:02,768 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 15:08:02,769 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 15:08:02,769 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 15:08:02,773 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 15:08:02,774 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 15:08:02,774 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 15:08:02,774 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 15:08:02,774 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 15:08:02,775 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 15:08:02,776 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 15:08:02,776 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 15:08:02,776 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 15:08:02,776 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-07 15:08:02,777 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 15:08:02,777 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-07 15:08:02,777 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-07 15:08:02,777 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 15:08:02,777 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-07 15:08:02,778 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 15:08:02,778 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-07 15:08:02,778 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 15:08:02,778 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 15:08:02,778 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 15:08:02,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:08:02,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 15:08:02,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 15:08:02,779 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-07 15:08:02,780 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-07 15:08:02,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-07 15:08:02,780 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-07 15:08:02,780 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 15:08:02,780 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 15:08:03,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 15:08:03,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 15:08:03,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 15:08:03,219 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 15:08:03,219 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 15:08:03,220 INFO L432 ainManager$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 [2021-10-07 15:08:03,302 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/522050ed0/960d7982f1844ed2a6df240e8308d028/FLAGc490dbbd0 [2021-10-07 15:08:03,850 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 15:08:03,851 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2021-10-07 15:08:03,861 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/522050ed0/960d7982f1844ed2a6df240e8308d028/FLAGc490dbbd0 [2021-10-07 15:08:04,209 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/522050ed0/960d7982f1844ed2a6df240e8308d028 [2021-10-07 15:08:04,214 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 15:08:04,224 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-07 15:08:04,229 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 15:08:04,229 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 15:08:04,234 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 15:08:04,234 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:08:04" (1/1) ... [2021-10-07 15:08:04,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20a9ce43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:08:04, skipping insertion in model container [2021-10-07 15:08:04,237 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:08:04" (1/1) ... [2021-10-07 15:08:04,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 15:08:04,274 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 15:08:04,546 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[2597,2610] [2021-10-07 15:08:04,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:08:04,566 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 15:08:04,620 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[2597,2610] [2021-10-07 15:08:04,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:08:04,646 INFO L208 MainTranslator]: Completed translation [2021-10-07 15:08:04,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:08:04 WrapperNode [2021-10-07 15:08:04,648 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 15:08:04,649 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 15:08:04,649 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 15:08:04,649 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 15:08:04,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:08:04" (1/1) ... [2021-10-07 15:08:04,679 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:08:04" (1/1) ... [2021-10-07 15:08:04,738 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 15:08:04,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 15:08:04,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 15:08:04,739 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 15:08:04,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:08:04" (1/1) ... [2021-10-07 15:08:04,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:08:04" (1/1) ... [2021-10-07 15:08:04,758 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:08:04" (1/1) ... [2021-10-07 15:08:04,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:08:04" (1/1) ... [2021-10-07 15:08:04,771 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:08:04" (1/1) ... [2021-10-07 15:08:04,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:08:04" (1/1) ... [2021-10-07 15:08:04,803 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:08:04" (1/1) ... [2021-10-07 15:08:04,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 15:08:04,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 15:08:04,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 15:08:04,816 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 15:08:04,817 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:08:04" (1/1) ... [2021-10-07 15:08:04,832 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:08:04,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:04,863 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-07 15:08:04,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-07 15:08:04,920 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 15:08:04,920 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 15:08:04,920 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 15:08:04,920 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 15:08:04,921 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-07 15:08:04,921 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-07 15:08:04,921 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-07 15:08:04,921 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-07 15:08:04,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-07 15:08:04,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 15:08:04,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-07 15:08:04,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-07 15:08:04,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-07 15:08:04,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 15:08:04,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 15:08:04,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-07 15:08:04,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 15:08:04,924 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-07 15:08:05,722 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 15:08:05,722 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-07 15:08:05,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:08:05 BoogieIcfgContainer [2021-10-07 15:08:05,725 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 15:08:05,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 15:08:05,727 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 15:08:05,730 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 15:08:05,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:08:04" (1/3) ... [2021-10-07 15:08:05,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d24b834 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:08:05, skipping insertion in model container [2021-10-07 15:08:05,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:08:04" (2/3) ... [2021-10-07 15:08:05,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d24b834 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:08:05, skipping insertion in model container [2021-10-07 15:08:05,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:08:05" (3/3) ... [2021-10-07 15:08:05,733 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-proofs-counter-add-4-semi-Q67.wvr.c [2021-10-07 15:08:05,739 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-07 15:08:05,739 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 15:08:05,739 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-10-07 15:08:05,739 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 15:08:05,775 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,775 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,776 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,776 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,776 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,776 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,777 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,777 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,777 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,777 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,778 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,778 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,778 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,778 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,779 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,779 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,779 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,779 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,779 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,780 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,781 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,781 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,781 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,781 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,781 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,782 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,782 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,782 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,782 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,783 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,783 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,783 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,784 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,784 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,784 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,784 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,784 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,785 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,785 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,785 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,785 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,785 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,786 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,786 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,786 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,786 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,786 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,787 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,787 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,787 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,787 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,787 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,788 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,788 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,788 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,788 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,789 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,789 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,789 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,789 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,790 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,790 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,790 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,790 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,791 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,791 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,791 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,791 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,791 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,792 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,792 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,792 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,792 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,792 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,793 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,793 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,793 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,793 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,793 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,794 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,794 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,795 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,795 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,795 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,795 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,795 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,795 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,796 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,796 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,796 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,796 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,797 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,797 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,797 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,797 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,797 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,797 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,798 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,798 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,798 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,798 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,798 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,799 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,799 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,799 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,799 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,799 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,799 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,800 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,800 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,800 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,800 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,800 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,801 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,801 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,801 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,801 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,801 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,801 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,802 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,805 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,805 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,805 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,806 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,806 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,806 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,808 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,808 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,808 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,809 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,810 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,810 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,811 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,811 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,812 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,813 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,813 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,813 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,813 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,813 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:05,823 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-07 15:08:05,873 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 15:08:05,881 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-07 15:08:05,881 INFO L340 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2021-10-07 15:08:05,898 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 15:08:05,910 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 141 places, 138 transitions, 308 flow [2021-10-07 15:08:05,914 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 141 places, 138 transitions, 308 flow [2021-10-07 15:08:05,916 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 141 places, 138 transitions, 308 flow [2021-10-07 15:08:06,001 INFO L129 PetriNetUnfolder]: 10/134 cut-off events. [2021-10-07 15:08:06,002 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-07 15:08:06,007 INFO L84 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 134 events. 10/134 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 127 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 97. Up to 2 conditions per place. [2021-10-07 15:08:06,011 INFO L116 LiptonReduction]: Number of co-enabled transitions 2520 [2021-10-07 15:08:12,236 INFO L131 LiptonReduction]: Checked pairs total: 3550 [2021-10-07 15:08:12,236 INFO L133 LiptonReduction]: Total number of compositions: 124 [2021-10-07 15:08:12,250 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 54 places, 45 transitions, 122 flow [2021-10-07 15:08:12,434 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) [2021-10-07 15:08:12,452 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) [2021-10-07 15:08:12,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 15:08:12,458 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:12,458 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 15:08:12,459 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:12,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:12,465 INFO L82 PathProgramCache]: Analyzing trace with hash 639337, now seen corresponding path program 1 times [2021-10-07 15:08:12,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:12,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717036458] [2021-10-07 15:08:12,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:12,477 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:12,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:12,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:12,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717036458] [2021-10-07 15:08:12,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717036458] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:08:12,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:08:12,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-07 15:08:12,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842028385] [2021-10-07 15:08:12,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:08:12,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:12,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:08:12,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:08:12,729 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) [2021-10-07 15:08:12,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:12,906 INFO L93 Difference]: Finished difference Result 4446 states and 18988 transitions. [2021-10-07 15:08:12,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:08:12,908 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 [2021-10-07 15:08:12,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:13,084 INFO L225 Difference]: With dead ends: 4446 [2021-10-07 15:08:13,084 INFO L226 Difference]: Without dead ends: 4446 [2021-10-07 15:08:13,086 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:08:13,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4446 states. [2021-10-07 15:08:13,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4446 to 2968. [2021-10-07 15:08:13,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2968 states, 2569 states have (on average 5.393927598287271) internal successors, (13857), 2967 states have internal predecessors, (13857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:13,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2968 states to 2968 states and 13857 transitions. [2021-10-07 15:08:13,464 INFO L78 Accepts]: Start accepts. Automaton has 2968 states and 13857 transitions. Word has length 3 [2021-10-07 15:08:13,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:13,465 INFO L470 AbstractCegarLoop]: Abstraction has 2968 states and 13857 transitions. [2021-10-07 15:08:13,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:13,466 INFO L276 IsEmpty]: Start isEmpty. Operand 2968 states and 13857 transitions. [2021-10-07 15:08:13,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 15:08:13,467 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:13,467 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 15:08:13,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-07 15:08:13,468 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:13,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:13,468 INFO L82 PathProgramCache]: Analyzing trace with hash 639340, now seen corresponding path program 1 times [2021-10-07 15:08:13,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:13,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671708724] [2021-10-07 15:08:13,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:13,469 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:13,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:13,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:13,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671708724] [2021-10-07 15:08:13,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671708724] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:08:13,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:08:13,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-07 15:08:13,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032880590] [2021-10-07 15:08:13,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:08:13,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:13,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:08:13,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:08:13,571 INFO L87 Difference]: Start difference. First operand 2968 states and 13857 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:13,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:13,746 INFO L93 Difference]: Finished difference Result 3036 states and 14102 transitions. [2021-10-07 15:08:13,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:08:13,746 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 [2021-10-07 15:08:13,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:13,792 INFO L225 Difference]: With dead ends: 3036 [2021-10-07 15:08:13,792 INFO L226 Difference]: Without dead ends: 3016 [2021-10-07 15:08:13,793 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 [2021-10-07 15:08:13,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3016 states. [2021-10-07 15:08:13,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3016 to 3016. [2021-10-07 15:08:13,916 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) [2021-10-07 15:08:13,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3016 states to 3016 states and 14047 transitions. [2021-10-07 15:08:13,943 INFO L78 Accepts]: Start accepts. Automaton has 3016 states and 14047 transitions. Word has length 3 [2021-10-07 15:08:13,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:13,944 INFO L470 AbstractCegarLoop]: Abstraction has 3016 states and 14047 transitions. [2021-10-07 15:08:13,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:13,944 INFO L276 IsEmpty]: Start isEmpty. Operand 3016 states and 14047 transitions. [2021-10-07 15:08:13,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 15:08:13,945 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:13,945 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-07 15:08:13,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-07 15:08:13,946 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:13,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:13,946 INFO L82 PathProgramCache]: Analyzing trace with hash 19819998, now seen corresponding path program 1 times [2021-10-07 15:08:13,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:13,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835987450] [2021-10-07 15:08:13,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:13,947 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:13,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:13,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:13,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835987450] [2021-10-07 15:08:13,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835987450] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:08:13,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:08:13,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 15:08:13,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169575547] [2021-10-07 15:08:13,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:08:13,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:13,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:08:13,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:08:13,995 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) [2021-10-07 15:08:14,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:14,106 INFO L93 Difference]: Finished difference Result 2644 states and 12423 transitions. [2021-10-07 15:08:14,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:08:14,107 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 [2021-10-07 15:08:14,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:14,150 INFO L225 Difference]: With dead ends: 2644 [2021-10-07 15:08:14,150 INFO L226 Difference]: Without dead ends: 2644 [2021-10-07 15:08:14,151 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 [2021-10-07 15:08:14,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2644 states. [2021-10-07 15:08:14,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2644 to 2644. [2021-10-07 15:08:14,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2644 states, 2325 states have (on average 5.3432258064516125) internal successors, (12423), 2643 states have internal predecessors, (12423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:14,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2644 states to 2644 states and 12423 transitions. [2021-10-07 15:08:14,290 INFO L78 Accepts]: Start accepts. Automaton has 2644 states and 12423 transitions. Word has length 4 [2021-10-07 15:08:14,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:14,290 INFO L470 AbstractCegarLoop]: Abstraction has 2644 states and 12423 transitions. [2021-10-07 15:08:14,291 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) [2021-10-07 15:08:14,291 INFO L276 IsEmpty]: Start isEmpty. Operand 2644 states and 12423 transitions. [2021-10-07 15:08:14,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 15:08:14,292 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:14,292 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-07 15:08:14,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-07 15:08:14,294 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:14,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:14,294 INFO L82 PathProgramCache]: Analyzing trace with hash 19820000, now seen corresponding path program 1 times [2021-10-07 15:08:14,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:14,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911735777] [2021-10-07 15:08:14,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:14,296 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:14,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:14,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:14,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:14,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911735777] [2021-10-07 15:08:14,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911735777] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:14,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029372577] [2021-10-07 15:08:14,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:14,394 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:14,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:14,396 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:08:14,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-07 15:08:14,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:14,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:08:14,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:14,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:14,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029372577] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:14,538 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:14,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 3 [2021-10-07 15:08:14,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188466863] [2021-10-07 15:08:14,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 15:08:14,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:14,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 15:08:14,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:08:14,540 INFO L87 Difference]: Start difference. First operand 2644 states and 12423 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) [2021-10-07 15:08:14,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:14,729 INFO L93 Difference]: Finished difference Result 5936 states and 25357 transitions. [2021-10-07 15:08:14,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:08:14,730 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 [2021-10-07 15:08:14,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:14,784 INFO L225 Difference]: With dead ends: 5936 [2021-10-07 15:08:14,784 INFO L226 Difference]: Without dead ends: 5936 [2021-10-07 15:08:14,785 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.2ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:08:14,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5936 states. [2021-10-07 15:08:14,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5936 to 3016. [2021-10-07 15:08:14,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3016 states, 2697 states have (on average 5.621431219873934) internal successors, (15161), 3015 states have internal predecessors, (15161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:15,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3016 states to 3016 states and 15161 transitions. [2021-10-07 15:08:15,014 INFO L78 Accepts]: Start accepts. Automaton has 3016 states and 15161 transitions. Word has length 4 [2021-10-07 15:08:15,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:15,014 INFO L470 AbstractCegarLoop]: Abstraction has 3016 states and 15161 transitions. [2021-10-07 15:08:15,015 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) [2021-10-07 15:08:15,015 INFO L276 IsEmpty]: Start isEmpty. Operand 3016 states and 15161 transitions. [2021-10-07 15:08:15,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 15:08:15,015 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:15,016 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-07 15:08:15,053 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 [2021-10-07 15:08:15,230 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 [2021-10-07 15:08:15,231 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:15,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:15,234 INFO L82 PathProgramCache]: Analyzing trace with hash 19820001, now seen corresponding path program 1 times [2021-10-07 15:08:15,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:15,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347361843] [2021-10-07 15:08:15,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:15,235 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:15,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:15,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:15,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347361843] [2021-10-07 15:08:15,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347361843] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:15,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574941184] [2021-10-07 15:08:15,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:15,321 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:15,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:15,331 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:08:15,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-07 15:08:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:15,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:08:15,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:15,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:15,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574941184] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:15,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:15,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 3 [2021-10-07 15:08:15,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021802441] [2021-10-07 15:08:15,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 15:08:15,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:15,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 15:08:15,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:08:15,423 INFO L87 Difference]: Start difference. First operand 3016 states and 15161 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) [2021-10-07 15:08:15,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:15,601 INFO L93 Difference]: Finished difference Result 6634 states and 27180 transitions. [2021-10-07 15:08:15,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 15:08:15,602 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 [2021-10-07 15:08:15,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:15,653 INFO L225 Difference]: With dead ends: 6634 [2021-10-07 15:08:15,653 INFO L226 Difference]: Without dead ends: 6614 [2021-10-07 15:08:15,653 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.0ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:08:15,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6614 states. [2021-10-07 15:08:15,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6614 to 5404. [2021-10-07 15:08:15,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5404 states, 5085 states have (on average 5.107767944936087) internal successors, (25973), 5403 states have internal predecessors, (25973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:16,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5404 states to 5404 states and 25973 transitions. [2021-10-07 15:08:16,067 INFO L78 Accepts]: Start accepts. Automaton has 5404 states and 25973 transitions. Word has length 4 [2021-10-07 15:08:16,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:16,067 INFO L470 AbstractCegarLoop]: Abstraction has 5404 states and 25973 transitions. [2021-10-07 15:08:16,067 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) [2021-10-07 15:08:16,068 INFO L276 IsEmpty]: Start isEmpty. Operand 5404 states and 25973 transitions. [2021-10-07 15:08:16,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 15:08:16,068 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:16,068 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-07 15:08:16,105 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 [2021-10-07 15:08:16,282 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 [2021-10-07 15:08:16,283 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:16,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:16,283 INFO L82 PathProgramCache]: Analyzing trace with hash 19820002, now seen corresponding path program 1 times [2021-10-07 15:08:16,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:16,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182910387] [2021-10-07 15:08:16,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:16,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:16,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:16,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:16,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182910387] [2021-10-07 15:08:16,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182910387] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:16,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694259436] [2021-10-07 15:08:16,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:16,314 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:16,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:16,315 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:08:16,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-07 15:08:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:16,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:08:16,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:16,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:16,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694259436] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:08:16,385 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:08:16,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2021-10-07 15:08:16,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902565011] [2021-10-07 15:08:16,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:08:16,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:16,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:08:16,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:08:16,386 INFO L87 Difference]: Start difference. First operand 5404 states and 25973 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:16,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:16,507 INFO L93 Difference]: Finished difference Result 5772 states and 27809 transitions. [2021-10-07 15:08:16,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:08:16,508 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-07 15:08:16,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:16,552 INFO L225 Difference]: With dead ends: 5772 [2021-10-07 15:08:16,552 INFO L226 Difference]: Without dead ends: 5772 [2021-10-07 15:08:16,552 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:08:16,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5772 states. [2021-10-07 15:08:16,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5772 to 3768. [2021-10-07 15:08:16,812 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) [2021-10-07 15:08:16,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3768 states to 3768 states and 17846 transitions. [2021-10-07 15:08:16,837 INFO L78 Accepts]: Start accepts. Automaton has 3768 states and 17846 transitions. Word has length 4 [2021-10-07 15:08:16,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:16,837 INFO L470 AbstractCegarLoop]: Abstraction has 3768 states and 17846 transitions. [2021-10-07 15:08:16,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:16,838 INFO L276 IsEmpty]: Start isEmpty. Operand 3768 states and 17846 transitions. [2021-10-07 15:08:16,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 15:08:16,838 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:16,838 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2021-10-07 15:08:16,864 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-10-07 15:08:17,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:17,052 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:17,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:17,053 INFO L82 PathProgramCache]: Analyzing trace with hash 614420491, now seen corresponding path program 2 times [2021-10-07 15:08:17,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:17,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668436637] [2021-10-07 15:08:17,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:17,054 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:17,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:17,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:17,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:17,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668436637] [2021-10-07 15:08:17,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668436637] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:17,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825293767] [2021-10-07 15:08:17,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:08:17,096 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:17,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:17,098 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:08:17,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-07 15:08:17,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:08:17,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:17,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:08:17,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:17,225 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:08:17,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825293767] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:08:17,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:08:17,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-07 15:08:17,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624223598] [2021-10-07 15:08:17,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:08:17,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:17,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:08:17,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:08:17,228 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) [2021-10-07 15:08:17,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:17,264 INFO L93 Difference]: Finished difference Result 3228 states and 15307 transitions. [2021-10-07 15:08:17,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:08:17,264 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 [2021-10-07 15:08:17,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:17,289 INFO L225 Difference]: With dead ends: 3228 [2021-10-07 15:08:17,290 INFO L226 Difference]: Without dead ends: 3228 [2021-10-07 15:08:17,290 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 9.1ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:08:17,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3228 states. [2021-10-07 15:08:17,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3228 to 1972. [2021-10-07 15:08:17,462 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) [2021-10-07 15:08:17,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1972 states to 1972 states and 8405 transitions. [2021-10-07 15:08:17,478 INFO L78 Accepts]: Start accepts. Automaton has 1972 states and 8405 transitions. Word has length 5 [2021-10-07 15:08:17,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:17,478 INFO L470 AbstractCegarLoop]: Abstraction has 1972 states and 8405 transitions. [2021-10-07 15:08:17,478 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) [2021-10-07 15:08:17,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1972 states and 8405 transitions. [2021-10-07 15:08:17,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 15:08:17,479 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:17,479 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2021-10-07 15:08:17,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-07 15:08:17,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:17,695 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:17,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:17,696 INFO L82 PathProgramCache]: Analyzing trace with hash 614420492, now seen corresponding path program 2 times [2021-10-07 15:08:17,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:17,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579121004] [2021-10-07 15:08:17,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:17,697 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:17,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:17,732 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:17,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:17,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579121004] [2021-10-07 15:08:17,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579121004] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:17,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146818182] [2021-10-07 15:08:17,733 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:08:17,733 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:17,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:17,735 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:08:17,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-07 15:08:17,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:08:17,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:17,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 15:08:17,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:17,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:17,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146818182] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:17,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:17,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2021-10-07 15:08:17,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124982236] [2021-10-07 15:08:17,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:08:17,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:17,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:08:17,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:08:17,816 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) [2021-10-07 15:08:17,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:17,932 INFO L93 Difference]: Finished difference Result 3464 states and 13906 transitions. [2021-10-07 15:08:17,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 15:08:17,933 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 [2021-10-07 15:08:17,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:17,957 INFO L225 Difference]: With dead ends: 3464 [2021-10-07 15:08:17,958 INFO L226 Difference]: Without dead ends: 3444 [2021-10-07 15:08:17,958 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 9.7ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:08:17,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3444 states. [2021-10-07 15:08:18,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3444 to 2348. [2021-10-07 15:08:18,075 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) [2021-10-07 15:08:18,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 10368 transitions. [2021-10-07 15:08:18,094 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 10368 transitions. Word has length 5 [2021-10-07 15:08:18,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:18,094 INFO L470 AbstractCegarLoop]: Abstraction has 2348 states and 10368 transitions. [2021-10-07 15:08:18,094 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) [2021-10-07 15:08:18,095 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 10368 transitions. [2021-10-07 15:08:18,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-07 15:08:18,095 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:18,095 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-07 15:08:18,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-07 15:08:18,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:18,310 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:18,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:18,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1869484483, now seen corresponding path program 1 times [2021-10-07 15:08:18,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:18,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673455136] [2021-10-07 15:08:18,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:18,312 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:18,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:18,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:18,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:18,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673455136] [2021-10-07 15:08:18,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673455136] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:08:18,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:08:18,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-07 15:08:18,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389513236] [2021-10-07 15:08:18,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:08:18,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:18,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:08:18,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:08:18,340 INFO L87 Difference]: Start difference. First operand 2348 states and 10368 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:18,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:18,393 INFO L93 Difference]: Finished difference Result 3708 states and 16218 transitions. [2021-10-07 15:08:18,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:08:18,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-07 15:08:18,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:18,415 INFO L225 Difference]: With dead ends: 3708 [2021-10-07 15:08:18,415 INFO L226 Difference]: Without dead ends: 3704 [2021-10-07 15:08:18,415 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:08:18,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3704 states. [2021-10-07 15:08:18,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3704 to 2870. [2021-10-07 15:08:18,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2870 states, 2743 states have (on average 4.852351440029165) internal successors, (13310), 2869 states have internal predecessors, (13310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:18,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 13310 transitions. [2021-10-07 15:08:18,599 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 13310 transitions. Word has length 6 [2021-10-07 15:08:18,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:18,600 INFO L470 AbstractCegarLoop]: Abstraction has 2870 states and 13310 transitions. [2021-10-07 15:08:18,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:18,600 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 13310 transitions. [2021-10-07 15:08:18,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-07 15:08:18,601 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:18,601 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2021-10-07 15:08:18,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-07 15:08:18,601 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:18,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:18,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1867166529, now seen corresponding path program 3 times [2021-10-07 15:08:18,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:18,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115017616] [2021-10-07 15:08:18,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:18,603 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:18,637 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:18,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:18,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115017616] [2021-10-07 15:08:18,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115017616] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:18,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046401968] [2021-10-07 15:08:18,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:08:18,639 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:18,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:18,640 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:08:18,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-07 15:08:18,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:08:18,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:18,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:08:18,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:18,739 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:18,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046401968] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:18,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:18,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-10-07 15:08:18,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925617066] [2021-10-07 15:08:18,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:08:18,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:18,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:08:18,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-07 15:08:18,744 INFO L87 Difference]: Start difference. First operand 2870 states and 13310 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) [2021-10-07 15:08:18,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:18,903 INFO L93 Difference]: Finished difference Result 5262 states and 22824 transitions. [2021-10-07 15:08:18,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:08:18,904 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 [2021-10-07 15:08:18,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:18,932 INFO L225 Difference]: With dead ends: 5262 [2021-10-07 15:08:18,933 INFO L226 Difference]: Without dead ends: 5230 [2021-10-07 15:08:18,933 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 14.9ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-07 15:08:18,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5230 states. [2021-10-07 15:08:19,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5230 to 3362. [2021-10-07 15:08:19,073 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) [2021-10-07 15:08:19,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3362 states to 3362 states and 15877 transitions. [2021-10-07 15:08:19,098 INFO L78 Accepts]: Start accepts. Automaton has 3362 states and 15877 transitions. Word has length 6 [2021-10-07 15:08:19,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:19,099 INFO L470 AbstractCegarLoop]: Abstraction has 3362 states and 15877 transitions. [2021-10-07 15:08:19,099 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) [2021-10-07 15:08:19,099 INFO L276 IsEmpty]: Start isEmpty. Operand 3362 states and 15877 transitions. [2021-10-07 15:08:19,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 15:08:19,100 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:19,100 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:19,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-07 15:08:19,313 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,SelfDestructingSolverStorable9 [2021-10-07 15:08:19,314 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:19,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:19,316 INFO L82 PathProgramCache]: Analyzing trace with hash 2119510105, now seen corresponding path program 1 times [2021-10-07 15:08:19,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:19,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726558704] [2021-10-07 15:08:19,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:19,317 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:19,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:19,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:19,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:19,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726558704] [2021-10-07 15:08:19,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726558704] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:08:19,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:08:19,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-07 15:08:19,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452254114] [2021-10-07 15:08:19,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:08:19,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:19,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:08:19,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:08:19,342 INFO L87 Difference]: Start difference. First operand 3362 states and 15877 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) [2021-10-07 15:08:19,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:19,414 INFO L93 Difference]: Finished difference Result 2672 states and 12337 transitions. [2021-10-07 15:08:19,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:08:19,414 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 [2021-10-07 15:08:19,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:19,429 INFO L225 Difference]: With dead ends: 2672 [2021-10-07 15:08:19,429 INFO L226 Difference]: Without dead ends: 2672 [2021-10-07 15:08:19,429 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:08:19,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2672 states. [2021-10-07 15:08:19,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2672 to 2672. [2021-10-07 15:08:19,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2672 states, 2577 states have (on average 4.787349631354288) internal successors, (12337), 2671 states have internal predecessors, (12337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:19,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2672 states to 2672 states and 12337 transitions. [2021-10-07 15:08:19,526 INFO L78 Accepts]: Start accepts. Automaton has 2672 states and 12337 transitions. Word has length 7 [2021-10-07 15:08:19,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:19,526 INFO L470 AbstractCegarLoop]: Abstraction has 2672 states and 12337 transitions. [2021-10-07 15:08:19,526 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) [2021-10-07 15:08:19,526 INFO L276 IsEmpty]: Start isEmpty. Operand 2672 states and 12337 transitions. [2021-10-07 15:08:19,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 15:08:19,527 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:19,527 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:19,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-07 15:08:19,528 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:19,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:19,528 INFO L82 PathProgramCache]: Analyzing trace with hash 2119510107, now seen corresponding path program 1 times [2021-10-07 15:08:19,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:19,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290706381] [2021-10-07 15:08:19,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:19,529 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:19,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:19,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:19,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290706381] [2021-10-07 15:08:19,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290706381] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:08:19,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:08:19,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-07 15:08:19,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119942399] [2021-10-07 15:08:19,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:08:19,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:19,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:08:19,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:08:19,550 INFO L87 Difference]: Start difference. First operand 2672 states and 12337 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) [2021-10-07 15:08:19,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:19,597 INFO L93 Difference]: Finished difference Result 4504 states and 20684 transitions. [2021-10-07 15:08:19,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:08:19,598 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 [2021-10-07 15:08:19,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:19,621 INFO L225 Difference]: With dead ends: 4504 [2021-10-07 15:08:19,621 INFO L226 Difference]: Without dead ends: 4504 [2021-10-07 15:08:19,621 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:08:19,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4504 states. [2021-10-07 15:08:19,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4504 to 3542. [2021-10-07 15:08:19,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3542 states, 3447 states have (on average 4.965767333913548) internal successors, (17117), 3541 states have internal predecessors, (17117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:19,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3542 states to 3542 states and 17117 transitions. [2021-10-07 15:08:19,770 INFO L78 Accepts]: Start accepts. Automaton has 3542 states and 17117 transitions. Word has length 7 [2021-10-07 15:08:19,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:19,770 INFO L470 AbstractCegarLoop]: Abstraction has 3542 states and 17117 transitions. [2021-10-07 15:08:19,771 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) [2021-10-07 15:08:19,771 INFO L276 IsEmpty]: Start isEmpty. Operand 3542 states and 17117 transitions. [2021-10-07 15:08:19,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 15:08:19,772 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:19,772 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2021-10-07 15:08:19,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-07 15:08:19,772 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:19,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:19,773 INFO L82 PathProgramCache]: Analyzing trace with hash 2047588012, now seen corresponding path program 4 times [2021-10-07 15:08:19,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:19,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739094563] [2021-10-07 15:08:19,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:19,773 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:19,811 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:19,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:19,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739094563] [2021-10-07 15:08:19,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739094563] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:19,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743659491] [2021-10-07 15:08:19,812 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:08:19,812 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:19,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:19,814 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:08:19,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-07 15:08:19,878 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:08:19,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:19,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:08:19,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:19,906 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:19,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743659491] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:19,907 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:19,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-10-07 15:08:19,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967459822] [2021-10-07 15:08:19,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:08:19,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:19,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:08:19,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:08:19,908 INFO L87 Difference]: Start difference. First operand 3542 states and 17117 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) [2021-10-07 15:08:20,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:20,087 INFO L93 Difference]: Finished difference Result 6526 states and 29886 transitions. [2021-10-07 15:08:20,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:08:20,088 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 [2021-10-07 15:08:20,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:20,122 INFO L225 Difference]: With dead ends: 6526 [2021-10-07 15:08:20,122 INFO L226 Difference]: Without dead ends: 6494 [2021-10-07 15:08:20,123 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 15.8ms TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:08:20,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6494 states. [2021-10-07 15:08:20,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6494 to 4076. [2021-10-07 15:08:20,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4076 states, 3981 states have (on average 4.988445114292891) internal successors, (19859), 4075 states have internal predecessors, (19859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:20,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4076 states to 4076 states and 19859 transitions. [2021-10-07 15:08:20,380 INFO L78 Accepts]: Start accepts. Automaton has 4076 states and 19859 transitions. Word has length 7 [2021-10-07 15:08:20,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:20,381 INFO L470 AbstractCegarLoop]: Abstraction has 4076 states and 19859 transitions. [2021-10-07 15:08:20,381 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) [2021-10-07 15:08:20,381 INFO L276 IsEmpty]: Start isEmpty. Operand 4076 states and 19859 transitions. [2021-10-07 15:08:20,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 15:08:20,383 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:20,383 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:20,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-07 15:08:20,596 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 [2021-10-07 15:08:20,596 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:20,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:20,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1278277053, now seen corresponding path program 1 times [2021-10-07 15:08:20,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:20,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188969178] [2021-10-07 15:08:20,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:20,598 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:20,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:20,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:20,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:20,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188969178] [2021-10-07 15:08:20,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188969178] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:08:20,620 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:08:20,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 15:08:20,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494705326] [2021-10-07 15:08:20,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:08:20,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:20,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:08:20,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:08:20,621 INFO L87 Difference]: Start difference. First operand 4076 states and 19859 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:20,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:20,659 INFO L93 Difference]: Finished difference Result 3380 states and 16432 transitions. [2021-10-07 15:08:20,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:08:20,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-07 15:08:20,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:20,676 INFO L225 Difference]: With dead ends: 3380 [2021-10-07 15:08:20,676 INFO L226 Difference]: Without dead ends: 3380 [2021-10-07 15:08:20,676 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:08:20,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3380 states. [2021-10-07 15:08:20,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3380 to 3380. [2021-10-07 15:08:20,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3380 states, 3309 states have (on average 4.965850710184346) internal successors, (16432), 3379 states have internal predecessors, (16432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:20,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3380 states to 3380 states and 16432 transitions. [2021-10-07 15:08:20,801 INFO L78 Accepts]: Start accepts. Automaton has 3380 states and 16432 transitions. Word has length 8 [2021-10-07 15:08:20,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:20,801 INFO L470 AbstractCegarLoop]: Abstraction has 3380 states and 16432 transitions. [2021-10-07 15:08:20,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:20,801 INFO L276 IsEmpty]: Start isEmpty. Operand 3380 states and 16432 transitions. [2021-10-07 15:08:20,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 15:08:20,802 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:20,802 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:20,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-07 15:08:20,803 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:20,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:20,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1278277054, now seen corresponding path program 1 times [2021-10-07 15:08:20,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:20,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294295468] [2021-10-07 15:08:20,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:20,804 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:20,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:20,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:20,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:20,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294295468] [2021-10-07 15:08:20,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294295468] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:20,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249647874] [2021-10-07 15:08:20,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:20,832 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:20,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:20,833 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:08:20,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-07 15:08:20,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:20,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:08:20,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:20,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:20,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249647874] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:20,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:20,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 3 [2021-10-07 15:08:20,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763177434] [2021-10-07 15:08:20,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 15:08:20,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:20,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 15:08:20,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:08:20,943 INFO L87 Difference]: Start difference. First operand 3380 states and 16432 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:21,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:21,029 INFO L93 Difference]: Finished difference Result 6358 states and 29091 transitions. [2021-10-07 15:08:21,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:08:21,030 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-07 15:08:21,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:21,062 INFO L225 Difference]: With dead ends: 6358 [2021-10-07 15:08:21,063 INFO L226 Difference]: Without dead ends: 6350 [2021-10-07 15:08:21,063 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 [2021-10-07 15:08:21,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6350 states. [2021-10-07 15:08:21,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6350 to 4120. [2021-10-07 15:08:21,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4120 states, 4049 states have (on average 5.117806865892813) internal successors, (20722), 4119 states have internal predecessors, (20722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:21,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4120 states to 4120 states and 20722 transitions. [2021-10-07 15:08:21,331 INFO L78 Accepts]: Start accepts. Automaton has 4120 states and 20722 transitions. Word has length 8 [2021-10-07 15:08:21,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:21,331 INFO L470 AbstractCegarLoop]: Abstraction has 4120 states and 20722 transitions. [2021-10-07 15:08:21,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:21,332 INFO L276 IsEmpty]: Start isEmpty. Operand 4120 states and 20722 transitions. [2021-10-07 15:08:21,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 15:08:21,333 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:21,333 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:21,371 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 [2021-10-07 15:08:21,546 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,SelfDestructingSolverStorable14 [2021-10-07 15:08:21,547 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:21,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:21,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1280304387, now seen corresponding path program 1 times [2021-10-07 15:08:21,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:21,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169186969] [2021-10-07 15:08:21,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:21,550 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:21,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:21,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:21,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:21,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169186969] [2021-10-07 15:08:21,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169186969] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:21,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963106384] [2021-10-07 15:08:21,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:21,579 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:21,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:21,580 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:08:21,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-07 15:08:21,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:21,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:08:21,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:21,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:21,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963106384] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:21,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:21,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2021-10-07 15:08:21,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238188541] [2021-10-07 15:08:21,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:08:21,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:21,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:08:21,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:08:21,672 INFO L87 Difference]: Start difference. First operand 4120 states and 20722 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:21,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:21,770 INFO L93 Difference]: Finished difference Result 7302 states and 34952 transitions. [2021-10-07 15:08:21,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:08:21,770 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-07 15:08:21,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:21,818 INFO L225 Difference]: With dead ends: 7302 [2021-10-07 15:08:21,818 INFO L226 Difference]: Without dead ends: 7302 [2021-10-07 15:08:21,819 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:08:21,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7302 states. [2021-10-07 15:08:22,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7302 to 5126. [2021-10-07 15:08:22,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5126 states, 5055 states have (on average 5.232047477744807) internal successors, (26448), 5125 states have internal predecessors, (26448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:22,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5126 states to 5126 states and 26448 transitions. [2021-10-07 15:08:22,080 INFO L78 Accepts]: Start accepts. Automaton has 5126 states and 26448 transitions. Word has length 8 [2021-10-07 15:08:22,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:22,081 INFO L470 AbstractCegarLoop]: Abstraction has 5126 states and 26448 transitions. [2021-10-07 15:08:22,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:22,081 INFO L276 IsEmpty]: Start isEmpty. Operand 5126 states and 26448 transitions. [2021-10-07 15:08:22,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 15:08:22,082 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:22,082 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1] [2021-10-07 15:08:22,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-07 15:08:22,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:22,296 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:22,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:22,297 INFO L82 PathProgramCache]: Analyzing trace with hash -949280607, now seen corresponding path program 5 times [2021-10-07 15:08:22,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:22,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326169914] [2021-10-07 15:08:22,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:22,298 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:22,345 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:22,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:22,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326169914] [2021-10-07 15:08:22,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326169914] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:22,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46863194] [2021-10-07 15:08:22,347 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:08:22,347 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:22,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:22,348 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:08:22,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-07 15:08:22,419 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-07 15:08:22,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:22,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:08:22,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:22,447 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:22,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46863194] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:22,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:22,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-10-07 15:08:22,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803357624] [2021-10-07 15:08:22,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-07 15:08:22,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:22,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-07 15:08:22,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-07 15:08:22,450 INFO L87 Difference]: Start difference. First operand 5126 states and 26448 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) [2021-10-07 15:08:22,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:22,696 INFO L93 Difference]: Finished difference Result 9474 states and 46724 transitions. [2021-10-07 15:08:22,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:08:22,697 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 [2021-10-07 15:08:22,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:22,757 INFO L225 Difference]: With dead ends: 9474 [2021-10-07 15:08:22,757 INFO L226 Difference]: Without dead ends: 9426 [2021-10-07 15:08:22,758 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 21.4ms TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-07 15:08:22,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9426 states. [2021-10-07 15:08:23,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9426 to 5832. [2021-10-07 15:08:23,079 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) [2021-10-07 15:08:23,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5832 states to 5832 states and 30142 transitions. [2021-10-07 15:08:23,126 INFO L78 Accepts]: Start accepts. Automaton has 5832 states and 30142 transitions. Word has length 8 [2021-10-07 15:08:23,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:23,126 INFO L470 AbstractCegarLoop]: Abstraction has 5832 states and 30142 transitions. [2021-10-07 15:08:23,126 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) [2021-10-07 15:08:23,127 INFO L276 IsEmpty]: Start isEmpty. Operand 5832 states and 30142 transitions. [2021-10-07 15:08:23,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 15:08:23,128 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:23,128 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:23,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-07 15:08:23,342 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 [2021-10-07 15:08:23,343 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:23,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:23,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1034730843, now seen corresponding path program 2 times [2021-10-07 15:08:23,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:23,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180109263] [2021-10-07 15:08:23,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:23,346 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:23,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:23,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:23,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:23,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180109263] [2021-10-07 15:08:23,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180109263] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:23,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710413274] [2021-10-07 15:08:23,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:08:23,379 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:23,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:23,380 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:08:23,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-07 15:08:23,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:08:23,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:23,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:08:23,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:23,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:08:23,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710413274] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:08:23,478 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:08:23,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-07 15:08:23,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080276144] [2021-10-07 15:08:23,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:08:23,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:23,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:08:23,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:08:23,481 INFO L87 Difference]: Start difference. First operand 5832 states and 30142 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:23,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:23,547 INFO L93 Difference]: Finished difference Result 4906 states and 25214 transitions. [2021-10-07 15:08:23,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:08:23,548 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 [2021-10-07 15:08:23,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:23,577 INFO L225 Difference]: With dead ends: 4906 [2021-10-07 15:08:23,578 INFO L226 Difference]: Without dead ends: 4906 [2021-10-07 15:08:23,578 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 9.2ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:08:23,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4906 states. [2021-10-07 15:08:23,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4906 to 2574. [2021-10-07 15:08:23,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2574 states, 2527 states have (on average 4.747130985358132) internal successors, (11996), 2573 states have internal predecessors, (11996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:23,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2574 states to 2574 states and 11996 transitions. [2021-10-07 15:08:23,716 INFO L78 Accepts]: Start accepts. Automaton has 2574 states and 11996 transitions. Word has length 9 [2021-10-07 15:08:23,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:23,716 INFO L470 AbstractCegarLoop]: Abstraction has 2574 states and 11996 transitions. [2021-10-07 15:08:23,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:23,717 INFO L276 IsEmpty]: Start isEmpty. Operand 2574 states and 11996 transitions. [2021-10-07 15:08:23,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 15:08:23,717 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:23,717 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1, 1] [2021-10-07 15:08:23,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-07 15:08:23,930 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 [2021-10-07 15:08:23,931 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:23,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:23,932 INFO L82 PathProgramCache]: Analyzing trace with hash 637072716, now seen corresponding path program 6 times [2021-10-07 15:08:23,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:23,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410660476] [2021-10-07 15:08:23,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:23,933 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:23,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:23,987 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:23,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:23,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410660476] [2021-10-07 15:08:23,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410660476] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:23,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530411494] [2021-10-07 15:08:23,988 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:08:23,988 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:23,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:23,989 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:08:24,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-07 15:08:24,084 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-07 15:08:24,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:24,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:08:24,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:24,119 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:24,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530411494] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:24,120 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:24,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-10-07 15:08:24,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515844378] [2021-10-07 15:08:24,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:08:24,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:24,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:08:24,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:08:24,122 INFO L87 Difference]: Start difference. First operand 2574 states and 11996 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) [2021-10-07 15:08:24,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:24,281 INFO L93 Difference]: Finished difference Result 4658 states and 20837 transitions. [2021-10-07 15:08:24,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 15:08:24,281 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 [2021-10-07 15:08:24,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:24,303 INFO L225 Difference]: With dead ends: 4658 [2021-10-07 15:08:24,303 INFO L226 Difference]: Without dead ends: 4610 [2021-10-07 15:08:24,304 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 25.2ms TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:08:24,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4610 states. [2021-10-07 15:08:24,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4610 to 2866. [2021-10-07 15:08:24,438 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) [2021-10-07 15:08:24,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2866 states to 2866 states and 13390 transitions. [2021-10-07 15:08:24,454 INFO L78 Accepts]: Start accepts. Automaton has 2866 states and 13390 transitions. Word has length 9 [2021-10-07 15:08:24,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:24,454 INFO L470 AbstractCegarLoop]: Abstraction has 2866 states and 13390 transitions. [2021-10-07 15:08:24,454 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) [2021-10-07 15:08:24,454 INFO L276 IsEmpty]: Start isEmpty. Operand 2866 states and 13390 transitions. [2021-10-07 15:08:24,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 15:08:24,455 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:24,455 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2021-10-07 15:08:24,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-07 15:08:24,661 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 [2021-10-07 15:08:24,662 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:24,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:24,663 INFO L82 PathProgramCache]: Analyzing trace with hash 63619896, now seen corresponding path program 2 times [2021-10-07 15:08:24,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:24,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879057906] [2021-10-07 15:08:24,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:24,664 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:24,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:24,695 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:24,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:24,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879057906] [2021-10-07 15:08:24,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879057906] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:24,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29703004] [2021-10-07 15:08:24,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:08:24,696 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:24,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:24,697 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:08:24,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-07 15:08:24,794 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:08:24,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:24,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:08:24,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:24,838 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:08:24,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29703004] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:08:24,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:08:24,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-07 15:08:24,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894070026] [2021-10-07 15:08:24,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:08:24,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:24,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:08:24,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:08:24,841 INFO L87 Difference]: Start difference. First operand 2866 states and 13390 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) [2021-10-07 15:08:24,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:24,865 INFO L93 Difference]: Finished difference Result 2386 states and 11170 transitions. [2021-10-07 15:08:24,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:08:24,866 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 [2021-10-07 15:08:24,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:24,876 INFO L225 Difference]: With dead ends: 2386 [2021-10-07 15:08:24,877 INFO L226 Difference]: Without dead ends: 2326 [2021-10-07 15:08:24,877 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.2ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:08:24,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2326 states. [2021-10-07 15:08:24,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2326 to 1296. [2021-10-07 15:08:24,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1296 states, 1265 states have (on average 4.238735177865613) internal successors, (5362), 1295 states have internal predecessors, (5362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:24,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 5362 transitions. [2021-10-07 15:08:24,924 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 5362 transitions. Word has length 10 [2021-10-07 15:08:24,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:24,925 INFO L470 AbstractCegarLoop]: Abstraction has 1296 states and 5362 transitions. [2021-10-07 15:08:24,925 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) [2021-10-07 15:08:24,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 5362 transitions. [2021-10-07 15:08:24,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 15:08:24,926 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:24,926 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:24,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-07 15:08:25,126 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 [2021-10-07 15:08:25,127 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:25,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:25,128 INFO L82 PathProgramCache]: Analyzing trace with hash 103258246, now seen corresponding path program 1 times [2021-10-07 15:08:25,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:25,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920791633] [2021-10-07 15:08:25,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:25,130 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:25,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:25,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:25,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:25,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920791633] [2021-10-07 15:08:25,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920791633] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:08:25,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:08:25,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-07 15:08:25,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741489556] [2021-10-07 15:08:25,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:08:25,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:25,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:08:25,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:08:25,154 INFO L87 Difference]: Start difference. First operand 1296 states and 5362 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:25,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:25,178 INFO L93 Difference]: Finished difference Result 1852 states and 7624 transitions. [2021-10-07 15:08:25,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:08:25,178 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 [2021-10-07 15:08:25,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:25,186 INFO L225 Difference]: With dead ends: 1852 [2021-10-07 15:08:25,186 INFO L226 Difference]: Without dead ends: 1836 [2021-10-07 15:08:25,187 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:08:25,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1836 states. [2021-10-07 15:08:25,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1836 to 1558. [2021-10-07 15:08:25,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1558 states, 1527 states have (on average 4.376555337262606) internal successors, (6683), 1557 states have internal predecessors, (6683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:25,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 6683 transitions. [2021-10-07 15:08:25,233 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 6683 transitions. Word has length 10 [2021-10-07 15:08:25,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:25,234 INFO L470 AbstractCegarLoop]: Abstraction has 1558 states and 6683 transitions. [2021-10-07 15:08:25,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:25,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 6683 transitions. [2021-10-07 15:08:25,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 15:08:25,235 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:25,235 INFO L512 BasicCegarLoop]: trace histogram [7, 1, 1, 1] [2021-10-07 15:08:25,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-07 15:08:25,236 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:25,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:25,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1725581823, now seen corresponding path program 7 times [2021-10-07 15:08:25,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:25,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900328093] [2021-10-07 15:08:25,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:25,237 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:25,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:25,297 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:25,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:25,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900328093] [2021-10-07 15:08:25,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900328093] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:25,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670804692] [2021-10-07 15:08:25,298 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:08:25,298 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:25,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:25,299 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:08:25,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-07 15:08:25,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:25,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:08:25,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:25,417 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:25,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670804692] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:25,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:25,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-10-07 15:08:25,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061231289] [2021-10-07 15:08:25,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 15:08:25,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:25,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 15:08:25,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:08:25,419 INFO L87 Difference]: Start difference. First operand 1558 states and 6683 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) [2021-10-07 15:08:25,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:25,559 INFO L93 Difference]: Finished difference Result 2890 states and 11963 transitions. [2021-10-07 15:08:25,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 15:08:25,560 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 [2021-10-07 15:08:25,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:25,572 INFO L225 Difference]: With dead ends: 2890 [2021-10-07 15:08:25,572 INFO L226 Difference]: Without dead ends: 2814 [2021-10-07 15:08:25,572 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 32.4ms TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:08:25,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2814 states. [2021-10-07 15:08:25,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2814 to 1708. [2021-10-07 15:08:25,625 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) [2021-10-07 15:08:25,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1708 states to 1708 states and 7339 transitions. [2021-10-07 15:08:25,635 INFO L78 Accepts]: Start accepts. Automaton has 1708 states and 7339 transitions. Word has length 10 [2021-10-07 15:08:25,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:25,635 INFO L470 AbstractCegarLoop]: Abstraction has 1708 states and 7339 transitions. [2021-10-07 15:08:25,635 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) [2021-10-07 15:08:25,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1708 states and 7339 transitions. [2021-10-07 15:08:25,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 15:08:25,637 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:25,637 INFO L512 BasicCegarLoop]: trace histogram [8, 1, 1, 1] [2021-10-07 15:08:25,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-07 15:08:25,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:25,852 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:25,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:25,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1953428500, now seen corresponding path program 8 times [2021-10-07 15:08:25,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:25,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549635196] [2021-10-07 15:08:25,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:25,854 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:25,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:25,923 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:25,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:25,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549635196] [2021-10-07 15:08:25,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549635196] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:25,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069035108] [2021-10-07 15:08:25,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:08:25,925 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:25,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:25,927 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:08:25,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-07 15:08:26,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:08:26,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:26,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:08:26,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:26,042 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:26,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069035108] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:26,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:26,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-10-07 15:08:26,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716864569] [2021-10-07 15:08:26,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:08:26,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:26,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:08:26,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:08:26,044 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) [2021-10-07 15:08:26,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:26,182 INFO L93 Difference]: Finished difference Result 3206 states and 13302 transitions. [2021-10-07 15:08:26,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:08:26,183 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 [2021-10-07 15:08:26,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:26,192 INFO L225 Difference]: With dead ends: 3206 [2021-10-07 15:08:26,192 INFO L226 Difference]: Without dead ends: 3126 [2021-10-07 15:08:26,193 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 41.2ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:08:26,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3126 states. [2021-10-07 15:08:26,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3126 to 1858. [2021-10-07 15:08:26,235 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) [2021-10-07 15:08:26,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 7995 transitions. [2021-10-07 15:08:26,241 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 7995 transitions. Word has length 11 [2021-10-07 15:08:26,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:26,242 INFO L470 AbstractCegarLoop]: Abstraction has 1858 states and 7995 transitions. [2021-10-07 15:08:26,242 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) [2021-10-07 15:08:26,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 7995 transitions. [2021-10-07 15:08:26,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 15:08:26,243 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:26,244 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:26,271 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-10-07 15:08:26,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:26,458 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:26,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:26,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1358821881, now seen corresponding path program 1 times [2021-10-07 15:08:26,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:26,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311121303] [2021-10-07 15:08:26,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:26,460 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:26,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:26,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:08:26,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:26,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311121303] [2021-10-07 15:08:26,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311121303] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:26,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272984929] [2021-10-07 15:08:26,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:26,494 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:26,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:26,495 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:08:26,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-07 15:08:26,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:26,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:08:26,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:26,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:08:26,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272984929] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:08:26,614 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:08:26,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2021-10-07 15:08:26,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101758955] [2021-10-07 15:08:26,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:08:26,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:26,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:08:26,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:08:26,615 INFO L87 Difference]: Start difference. First operand 1858 states and 7995 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:26,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:26,642 INFO L93 Difference]: Finished difference Result 1894 states and 7692 transitions. [2021-10-07 15:08:26,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:08:26,643 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) 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 [2021-10-07 15:08:26,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:26,651 INFO L225 Difference]: With dead ends: 1894 [2021-10-07 15:08:26,651 INFO L226 Difference]: Without dead ends: 1894 [2021-10-07 15:08:26,651 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:08:26,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1894 states. [2021-10-07 15:08:26,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1894 to 1580. [2021-10-07 15:08:26,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1580 states, 1557 states have (on average 4.292228644829801) internal successors, (6683), 1579 states have internal predecessors, (6683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:26,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 6683 transitions. [2021-10-07 15:08:26,697 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 6683 transitions. Word has length 12 [2021-10-07 15:08:26,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:26,698 INFO L470 AbstractCegarLoop]: Abstraction has 1580 states and 6683 transitions. [2021-10-07 15:08:26,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:26,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 6683 transitions. [2021-10-07 15:08:26,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 15:08:26,699 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:26,699 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:26,734 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 [2021-10-07 15:08:26,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-10-07 15:08:26,913 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:26,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:26,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1358821879, now seen corresponding path program 1 times [2021-10-07 15:08:26,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:26,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480632172] [2021-10-07 15:08:26,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:26,916 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:26,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:26,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:08:26,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:26,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480632172] [2021-10-07 15:08:26,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480632172] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:26,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059183985] [2021-10-07 15:08:26,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:26,944 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:26,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:26,945 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:08:26,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-07 15:08:27,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:27,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:08:27,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:27,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:08:27,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059183985] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:27,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:27,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 3 [2021-10-07 15:08:27,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311733770] [2021-10-07 15:08:27,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 15:08:27,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:27,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 15:08:27,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:08:27,104 INFO L87 Difference]: Start difference. First operand 1580 states and 6683 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) [2021-10-07 15:08:27,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:27,137 INFO L93 Difference]: Finished difference Result 2546 states and 10346 transitions. [2021-10-07 15:08:27,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:08:27,138 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 [2021-10-07 15:08:27,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:27,147 INFO L225 Difference]: With dead ends: 2546 [2021-10-07 15:08:27,148 INFO L226 Difference]: Without dead ends: 2518 [2021-10-07 15:08:27,148 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.7ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:08:27,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2021-10-07 15:08:27,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 1890. [2021-10-07 15:08:27,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1890 states, 1867 states have (on average 4.411355115158008) internal successors, (8236), 1889 states have internal predecessors, (8236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:27,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1890 states to 1890 states and 8236 transitions. [2021-10-07 15:08:27,210 INFO L78 Accepts]: Start accepts. Automaton has 1890 states and 8236 transitions. Word has length 12 [2021-10-07 15:08:27,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:27,210 INFO L470 AbstractCegarLoop]: Abstraction has 1890 states and 8236 transitions. [2021-10-07 15:08:27,210 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) [2021-10-07 15:08:27,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1890 states and 8236 transitions. [2021-10-07 15:08:27,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 15:08:27,212 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:27,212 INFO L512 BasicCegarLoop]: trace histogram [9, 1, 1, 1] [2021-10-07 15:08:27,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-07 15:08:27,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-10-07 15:08:27,426 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:27,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:27,427 INFO L82 PathProgramCache]: Analyzing trace with hash -426740895, now seen corresponding path program 9 times [2021-10-07 15:08:27,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:27,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889427072] [2021-10-07 15:08:27,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:27,428 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:27,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:27,501 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:27,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:27,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889427072] [2021-10-07 15:08:27,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889427072] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:27,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250511186] [2021-10-07 15:08:27,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:08:27,502 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:27,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:27,503 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:08:27,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-07 15:08:27,606 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-07 15:08:27,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:27,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:08:27,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:27,678 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:27,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250511186] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:27,678 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:27,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-10-07 15:08:27,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357964559] [2021-10-07 15:08:27,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:08:27,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:27,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:08:27,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:08:27,680 INFO L87 Difference]: Start difference. First operand 1890 states and 8236 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) [2021-10-07 15:08:27,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:27,843 INFO L93 Difference]: Finished difference Result 3554 states and 15102 transitions. [2021-10-07 15:08:27,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 15:08:27,843 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 [2021-10-07 15:08:27,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:27,855 INFO L225 Difference]: With dead ends: 3554 [2021-10-07 15:08:27,855 INFO L226 Difference]: Without dead ends: 3430 [2021-10-07 15:08:27,855 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 49.4ms TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:08:27,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3430 states. [2021-10-07 15:08:27,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3430 to 2048. [2021-10-07 15:08:27,901 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) [2021-10-07 15:08:27,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2048 states to 2048 states and 8917 transitions. [2021-10-07 15:08:27,912 INFO L78 Accepts]: Start accepts. Automaton has 2048 states and 8917 transitions. Word has length 12 [2021-10-07 15:08:27,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:27,912 INFO L470 AbstractCegarLoop]: Abstraction has 2048 states and 8917 transitions. [2021-10-07 15:08:27,912 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) [2021-10-07 15:08:27,912 INFO L276 IsEmpty]: Start isEmpty. Operand 2048 states and 8917 transitions. [2021-10-07 15:08:27,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 15:08:27,914 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:27,914 INFO L512 BasicCegarLoop]: trace histogram [10, 1, 1, 1] [2021-10-07 15:08:27,945 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 [2021-10-07 15:08:28,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:28,130 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:28,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:28,131 INFO L82 PathProgramCache]: Analyzing trace with hash -344065396, now seen corresponding path program 10 times [2021-10-07 15:08:28,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:28,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760921450] [2021-10-07 15:08:28,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:28,132 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:28,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:28,225 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:28,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:28,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760921450] [2021-10-07 15:08:28,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760921450] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:28,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578242002] [2021-10-07 15:08:28,226 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:08:28,226 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:28,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:28,227 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:08:28,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-07 15:08:28,337 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:08:28,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:28,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-07 15:08:28,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:28,388 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:28,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578242002] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:28,388 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:28,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-10-07 15:08:28,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101612713] [2021-10-07 15:08:28,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:08:28,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:28,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:08:28,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:08:28,390 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) [2021-10-07 15:08:28,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:28,574 INFO L93 Difference]: Finished difference Result 3878 states and 16488 transitions. [2021-10-07 15:08:28,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-07 15:08:28,575 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 [2021-10-07 15:08:28,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:28,592 INFO L225 Difference]: With dead ends: 3878 [2021-10-07 15:08:28,592 INFO L226 Difference]: Without dead ends: 3750 [2021-10-07 15:08:28,592 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 58.1ms TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:08:28,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3750 states. [2021-10-07 15:08:28,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3750 to 2206. [2021-10-07 15:08:28,661 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) [2021-10-07 15:08:28,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2206 states to 2206 states and 9598 transitions. [2021-10-07 15:08:28,673 INFO L78 Accepts]: Start accepts. Automaton has 2206 states and 9598 transitions. Word has length 13 [2021-10-07 15:08:28,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:28,673 INFO L470 AbstractCegarLoop]: Abstraction has 2206 states and 9598 transitions. [2021-10-07 15:08:28,674 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) [2021-10-07 15:08:28,674 INFO L276 IsEmpty]: Start isEmpty. Operand 2206 states and 9598 transitions. [2021-10-07 15:08:28,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 15:08:28,676 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:28,676 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:28,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-07 15:08:28,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-07 15:08:28,892 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:28,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:28,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1638725724, now seen corresponding path program 2 times [2021-10-07 15:08:28,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:28,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28093402] [2021-10-07 15:08:28,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:28,895 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:28,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:28,948 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:08:28,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:28,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28093402] [2021-10-07 15:08:28,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28093402] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:28,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848704731] [2021-10-07 15:08:28,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:08:28,949 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:28,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:28,950 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:08:28,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-07 15:08:29,047 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:08:29,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:29,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:08:29,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:29,104 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:08:29,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848704731] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:08:29,105 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:08:29,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-07 15:08:29,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750981194] [2021-10-07 15:08:29,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:08:29,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:29,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:08:29,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:08:29,106 INFO L87 Difference]: Start difference. First operand 2206 states and 9598 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) [2021-10-07 15:08:29,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:29,124 INFO L93 Difference]: Finished difference Result 1884 states and 8060 transitions. [2021-10-07 15:08:29,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:08:29,125 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 [2021-10-07 15:08:29,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:29,131 INFO L225 Difference]: With dead ends: 1884 [2021-10-07 15:08:29,132 INFO L226 Difference]: Without dead ends: 1528 [2021-10-07 15:08:29,132 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 30.0ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:08:29,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2021-10-07 15:08:29,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 972. [2021-10-07 15:08:29,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 957 states have (on average 3.9456635318704283) internal successors, (3776), 971 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:29,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 3776 transitions. [2021-10-07 15:08:29,163 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 3776 transitions. Word has length 14 [2021-10-07 15:08:29,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:29,164 INFO L470 AbstractCegarLoop]: Abstraction has 972 states and 3776 transitions. [2021-10-07 15:08:29,164 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) [2021-10-07 15:08:29,164 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 3776 transitions. [2021-10-07 15:08:29,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 15:08:29,166 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:29,166 INFO L512 BasicCegarLoop]: trace histogram [11, 1, 1, 1] [2021-10-07 15:08:29,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-07 15:08:29,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-07 15:08:29,381 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:29,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:29,382 INFO L82 PathProgramCache]: Analyzing trace with hash -2076092223, now seen corresponding path program 11 times [2021-10-07 15:08:29,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:29,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584590356] [2021-10-07 15:08:29,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:29,384 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:29,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:29,486 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:29,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:29,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584590356] [2021-10-07 15:08:29,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584590356] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:29,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423575002] [2021-10-07 15:08:29,487 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:08:29,487 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:29,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:29,488 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:08:29,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-07 15:08:29,594 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-10-07 15:08:29,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:29,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 15:08:29,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:29,645 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:29,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423575002] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:29,646 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:29,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-10-07 15:08:29,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642059114] [2021-10-07 15:08:29,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 15:08:29,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:29,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 15:08:29,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:08:29,647 INFO L87 Difference]: Start difference. First operand 972 states and 3776 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) [2021-10-07 15:08:29,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:29,791 INFO L93 Difference]: Finished difference Result 1888 states and 7330 transitions. [2021-10-07 15:08:29,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:08:29,791 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 [2021-10-07 15:08:29,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:29,797 INFO L225 Difference]: With dead ends: 1888 [2021-10-07 15:08:29,798 INFO L226 Difference]: Without dead ends: 1648 [2021-10-07 15:08:29,798 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 66.3ms TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:08:29,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2021-10-07 15:08:29,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1032. [2021-10-07 15:08:29,825 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) [2021-10-07 15:08:29,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 4008 transitions. [2021-10-07 15:08:29,830 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 4008 transitions. Word has length 14 [2021-10-07 15:08:29,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:29,830 INFO L470 AbstractCegarLoop]: Abstraction has 1032 states and 4008 transitions. [2021-10-07 15:08:29,830 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) [2021-10-07 15:08:29,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 4008 transitions. [2021-10-07 15:08:29,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 15:08:29,832 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:29,832 INFO L512 BasicCegarLoop]: trace histogram [12, 1, 1, 1] [2021-10-07 15:08:29,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-07 15:08:30,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-07 15:08:30,042 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:30,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:30,043 INFO L82 PathProgramCache]: Analyzing trace with hash 65650988, now seen corresponding path program 12 times [2021-10-07 15:08:30,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:30,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031534427] [2021-10-07 15:08:30,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:30,044 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:30,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:30,164 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:30,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:30,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031534427] [2021-10-07 15:08:30,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031534427] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:30,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479827134] [2021-10-07 15:08:30,165 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:08:30,166 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:30,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:30,168 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:08:30,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-07 15:08:30,277 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-07 15:08:30,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:30,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 15:08:30,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:30,339 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:30,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479827134] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:30,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:30,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-10-07 15:08:30,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173880540] [2021-10-07 15:08:30,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 15:08:30,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:30,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 15:08:30,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:08:30,341 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) [2021-10-07 15:08:30,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:30,481 INFO L93 Difference]: Finished difference Result 2024 states and 7863 transitions. [2021-10-07 15:08:30,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:08:30,482 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 [2021-10-07 15:08:30,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:30,487 INFO L225 Difference]: With dead ends: 2024 [2021-10-07 15:08:30,487 INFO L226 Difference]: Without dead ends: 1764 [2021-10-07 15:08:30,488 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 73.2ms TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:08:30,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2021-10-07 15:08:30,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1092. [2021-10-07 15:08:30,515 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) [2021-10-07 15:08:30,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1092 states to 1092 states and 4240 transitions. [2021-10-07 15:08:30,520 INFO L78 Accepts]: Start accepts. Automaton has 1092 states and 4240 transitions. Word has length 15 [2021-10-07 15:08:30,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:30,521 INFO L470 AbstractCegarLoop]: Abstraction has 1092 states and 4240 transitions. [2021-10-07 15:08:30,521 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) [2021-10-07 15:08:30,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1092 states and 4240 transitions. [2021-10-07 15:08:30,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:08:30,523 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:30,523 INFO L512 BasicCegarLoop]: trace histogram [13, 1, 1, 1] [2021-10-07 15:08:30,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-07 15:08:30,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:30,739 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:30,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:30,740 INFO L82 PathProgramCache]: Analyzing trace with hash 2035181089, now seen corresponding path program 13 times [2021-10-07 15:08:30,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:30,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584411869] [2021-10-07 15:08:30,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:30,741 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:30,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:30,897 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:30,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:30,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584411869] [2021-10-07 15:08:30,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584411869] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:30,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626506770] [2021-10-07 15:08:30,901 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:08:30,901 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:30,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:30,903 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:08:30,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-07 15:08:31,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:31,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 15:08:31,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:31,071 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:31,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626506770] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:31,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:31,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-10-07 15:08:31,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830067527] [2021-10-07 15:08:31,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-07 15:08:31,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:31,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-07 15:08:31,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:08:31,073 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) [2021-10-07 15:08:31,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:31,248 INFO L93 Difference]: Finished difference Result 2160 states and 8396 transitions. [2021-10-07 15:08:31,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 15:08:31,248 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 [2021-10-07 15:08:31,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:31,256 INFO L225 Difference]: With dead ends: 2160 [2021-10-07 15:08:31,256 INFO L226 Difference]: Without dead ends: 1880 [2021-10-07 15:08:31,258 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 91.8ms TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:08:31,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2021-10-07 15:08:31,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1152. [2021-10-07 15:08:31,289 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) [2021-10-07 15:08:31,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 4472 transitions. [2021-10-07 15:08:31,294 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 4472 transitions. Word has length 16 [2021-10-07 15:08:31,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:31,296 INFO L470 AbstractCegarLoop]: Abstraction has 1152 states and 4472 transitions. [2021-10-07 15:08:31,296 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) [2021-10-07 15:08:31,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 4472 transitions. [2021-10-07 15:08:31,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:08:31,298 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:31,299 INFO L512 BasicCegarLoop]: trace histogram [14, 1, 1, 1] [2021-10-07 15:08:31,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-07 15:08:31,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:31,512 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:31,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:31,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1333895220, now seen corresponding path program 14 times [2021-10-07 15:08:31,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:31,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967523209] [2021-10-07 15:08:31,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:31,513 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:31,664 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:31,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:31,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967523209] [2021-10-07 15:08:31,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967523209] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:31,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550644195] [2021-10-07 15:08:31,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:08:31,665 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:31,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:31,666 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:08:31,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-07 15:08:31,777 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:08:31,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:31,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-07 15:08:31,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:31,843 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:31,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550644195] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:31,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:31,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-10-07 15:08:31,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537328253] [2021-10-07 15:08:31,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 15:08:31,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:31,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 15:08:31,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:08:31,845 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) [2021-10-07 15:08:32,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:32,023 INFO L93 Difference]: Finished difference Result 2296 states and 8929 transitions. [2021-10-07 15:08:32,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 15:08:32,023 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 [2021-10-07 15:08:32,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:32,029 INFO L225 Difference]: With dead ends: 2296 [2021-10-07 15:08:32,030 INFO L226 Difference]: Without dead ends: 1996 [2021-10-07 15:08:32,030 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 107.3ms TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:08:32,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1996 states. [2021-10-07 15:08:32,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1996 to 1212. [2021-10-07 15:08:32,055 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) [2021-10-07 15:08:32,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 4704 transitions. [2021-10-07 15:08:32,060 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 4704 transitions. Word has length 17 [2021-10-07 15:08:32,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:32,061 INFO L470 AbstractCegarLoop]: Abstraction has 1212 states and 4704 transitions. [2021-10-07 15:08:32,061 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) [2021-10-07 15:08:32,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 4704 transitions. [2021-10-07 15:08:32,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:08:32,063 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:32,064 INFO L512 BasicCegarLoop]: trace histogram [15, 1, 1, 1] [2021-10-07 15:08:32,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-07 15:08:32,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-10-07 15:08:32,278 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:32,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:32,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1598921601, now seen corresponding path program 15 times [2021-10-07 15:08:32,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:32,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229295748] [2021-10-07 15:08:32,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:32,280 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:32,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:32,431 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:32,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:32,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229295748] [2021-10-07 15:08:32,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229295748] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:32,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70742092] [2021-10-07 15:08:32,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:08:32,432 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:32,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:32,433 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:08:32,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-07 15:08:32,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-10-07 15:08:32,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:32,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 15:08:32,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:32,646 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:32,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70742092] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:32,646 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:32,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-10-07 15:08:32,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559374044] [2021-10-07 15:08:32,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 15:08:32,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:32,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 15:08:32,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:08:32,648 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) [2021-10-07 15:08:32,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:32,844 INFO L93 Difference]: Finished difference Result 2432 states and 9462 transitions. [2021-10-07 15:08:32,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-07 15:08:32,844 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 [2021-10-07 15:08:32,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:32,853 INFO L225 Difference]: With dead ends: 2432 [2021-10-07 15:08:32,853 INFO L226 Difference]: Without dead ends: 2112 [2021-10-07 15:08:32,854 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 105.0ms TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:08:32,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2112 states. [2021-10-07 15:08:32,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2112 to 1272. [2021-10-07 15:08:32,888 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) [2021-10-07 15:08:32,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 4936 transitions. [2021-10-07 15:08:32,894 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 4936 transitions. Word has length 18 [2021-10-07 15:08:32,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:32,894 INFO L470 AbstractCegarLoop]: Abstraction has 1272 states and 4936 transitions. [2021-10-07 15:08:32,894 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) [2021-10-07 15:08:32,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 4936 transitions. [2021-10-07 15:08:32,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:08:32,897 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:32,897 INFO L512 BasicCegarLoop]: trace histogram [16, 1, 1, 1] [2021-10-07 15:08:32,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-07 15:08:33,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:33,111 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:33,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:33,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1973037460, now seen corresponding path program 16 times [2021-10-07 15:08:33,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:33,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26686128] [2021-10-07 15:08:33,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:33,112 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:33,297 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:33,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:33,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26686128] [2021-10-07 15:08:33,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26686128] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:33,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507295849] [2021-10-07 15:08:33,298 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:08:33,298 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:33,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:33,299 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) [2021-10-07 15:08:33,301 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 [2021-10-07 15:08:33,427 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:08:33,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:33,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 15:08:33,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:33,496 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:33,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507295849] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:33,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:33,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-10-07 15:08:33,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041498384] [2021-10-07 15:08:33,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 15:08:33,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:33,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 15:08:33,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-10-07 15:08:33,501 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) [2021-10-07 15:08:33,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:33,717 INFO L93 Difference]: Finished difference Result 2568 states and 9995 transitions. [2021-10-07 15:08:33,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 15:08:33,717 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 [2021-10-07 15:08:33,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:33,727 INFO L225 Difference]: With dead ends: 2568 [2021-10-07 15:08:33,728 INFO L226 Difference]: Without dead ends: 2228 [2021-10-07 15:08:33,728 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 135.9ms TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-10-07 15:08:33,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2228 states. [2021-10-07 15:08:33,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2228 to 1332. [2021-10-07 15:08:33,764 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) [2021-10-07 15:08:33,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1332 states to 1332 states and 5168 transitions. [2021-10-07 15:08:33,771 INFO L78 Accepts]: Start accepts. Automaton has 1332 states and 5168 transitions. Word has length 19 [2021-10-07 15:08:33,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:33,771 INFO L470 AbstractCegarLoop]: Abstraction has 1332 states and 5168 transitions. [2021-10-07 15:08:33,771 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) [2021-10-07 15:08:33,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1332 states and 5168 transitions. [2021-10-07 15:08:33,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:08:33,774 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:33,775 INFO L512 BasicCegarLoop]: trace histogram [17, 1, 1, 1] [2021-10-07 15:08:33,814 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 [2021-10-07 15:08:33,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:33,990 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:33,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:33,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1034618655, now seen corresponding path program 17 times [2021-10-07 15:08:33,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:33,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980594525] [2021-10-07 15:08:33,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:33,997 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:34,199 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:34,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:34,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980594525] [2021-10-07 15:08:34,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980594525] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:34,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269812171] [2021-10-07 15:08:34,200 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:08:34,201 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:34,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:34,202 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) [2021-10-07 15:08:34,218 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 [2021-10-07 15:08:34,341 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-10-07 15:08:34,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:34,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 15:08:34,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:34,409 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:34,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269812171] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:34,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:34,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-10-07 15:08:34,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752809371] [2021-10-07 15:08:34,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-07 15:08:34,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:34,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-07 15:08:34,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-10-07 15:08:34,412 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) [2021-10-07 15:08:34,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:34,628 INFO L93 Difference]: Finished difference Result 2704 states and 10528 transitions. [2021-10-07 15:08:34,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 15:08:34,628 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 [2021-10-07 15:08:34,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:34,634 INFO L225 Difference]: With dead ends: 2704 [2021-10-07 15:08:34,635 INFO L226 Difference]: Without dead ends: 2344 [2021-10-07 15:08:34,635 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 146.2ms TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-10-07 15:08:34,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2344 states. [2021-10-07 15:08:34,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2344 to 1392. [2021-10-07 15:08:34,667 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) [2021-10-07 15:08:34,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 5400 transitions. [2021-10-07 15:08:34,671 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 5400 transitions. Word has length 20 [2021-10-07 15:08:34,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:34,672 INFO L470 AbstractCegarLoop]: Abstraction has 1392 states and 5400 transitions. [2021-10-07 15:08:34,672 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) [2021-10-07 15:08:34,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 5400 transitions. [2021-10-07 15:08:34,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 15:08:34,675 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:34,675 INFO L512 BasicCegarLoop]: trace histogram [18, 1, 1, 1] [2021-10-07 15:08:34,711 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 [2021-10-07 15:08:34,888 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,SelfDestructingSolverStorable34 [2021-10-07 15:08:34,889 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:34,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:34,890 INFO L82 PathProgramCache]: Analyzing trace with hash -2008406772, now seen corresponding path program 18 times [2021-10-07 15:08:34,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:34,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801408899] [2021-10-07 15:08:34,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:34,891 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:35,131 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:35,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:35,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801408899] [2021-10-07 15:08:35,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801408899] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:35,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926963195] [2021-10-07 15:08:35,132 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:08:35,133 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:35,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:35,134 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) [2021-10-07 15:08:35,139 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 [2021-10-07 15:08:35,290 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-10-07 15:08:35,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:35,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-07 15:08:35,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:35,361 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:35,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926963195] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:35,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:35,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-10-07 15:08:35,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66106114] [2021-10-07 15:08:35,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 15:08:35,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:35,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 15:08:35,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:08:35,364 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) [2021-10-07 15:08:35,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:35,568 INFO L93 Difference]: Finished difference Result 2840 states and 11061 transitions. [2021-10-07 15:08:35,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 15:08:35,569 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 [2021-10-07 15:08:35,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:35,576 INFO L225 Difference]: With dead ends: 2840 [2021-10-07 15:08:35,576 INFO L226 Difference]: Without dead ends: 2460 [2021-10-07 15:08:35,576 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 175.4ms TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:08:35,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2460 states. [2021-10-07 15:08:35,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2460 to 1452. [2021-10-07 15:08:35,602 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) [2021-10-07 15:08:35,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 5632 transitions. [2021-10-07 15:08:35,606 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 5632 transitions. Word has length 21 [2021-10-07 15:08:35,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:35,607 INFO L470 AbstractCegarLoop]: Abstraction has 1452 states and 5632 transitions. [2021-10-07 15:08:35,607 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) [2021-10-07 15:08:35,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 5632 transitions. [2021-10-07 15:08:35,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 15:08:35,609 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:35,609 INFO L512 BasicCegarLoop]: trace histogram [19, 1, 1, 1] [2021-10-07 15:08:35,634 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 [2021-10-07 15:08:35,823 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,SelfDestructingSolverStorable35 [2021-10-07 15:08:35,824 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:35,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:35,824 INFO L82 PathProgramCache]: Analyzing trace with hash -2131067327, now seen corresponding path program 19 times [2021-10-07 15:08:35,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:35,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737968990] [2021-10-07 15:08:35,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:35,825 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:35,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:36,098 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:36,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:36,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737968990] [2021-10-07 15:08:36,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737968990] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:36,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864151888] [2021-10-07 15:08:36,099 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:08:36,100 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:36,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:36,102 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) [2021-10-07 15:08:36,103 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 [2021-10-07 15:08:36,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:36,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-07 15:08:36,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:36,331 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:36,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864151888] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:36,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:36,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-10-07 15:08:36,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438002000] [2021-10-07 15:08:36,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 15:08:36,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:36,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 15:08:36,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:08:36,334 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) [2021-10-07 15:08:36,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:36,575 INFO L93 Difference]: Finished difference Result 2976 states and 11594 transitions. [2021-10-07 15:08:36,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:08:36,575 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 [2021-10-07 15:08:36,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:36,582 INFO L225 Difference]: With dead ends: 2976 [2021-10-07 15:08:36,582 INFO L226 Difference]: Without dead ends: 2576 [2021-10-07 15:08:36,583 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 195.4ms TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:08:36,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2576 states. [2021-10-07 15:08:36,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2576 to 1512. [2021-10-07 15:08:36,610 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) [2021-10-07 15:08:36,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 5864 transitions. [2021-10-07 15:08:36,614 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 5864 transitions. Word has length 22 [2021-10-07 15:08:36,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:36,614 INFO L470 AbstractCegarLoop]: Abstraction has 1512 states and 5864 transitions. [2021-10-07 15:08:36,614 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) [2021-10-07 15:08:36,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 5864 transitions. [2021-10-07 15:08:36,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:08:36,618 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:36,618 INFO L512 BasicCegarLoop]: trace histogram [20, 1, 1, 1] [2021-10-07 15:08:36,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-10-07 15:08:36,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:36,828 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:36,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:36,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1638577236, now seen corresponding path program 20 times [2021-10-07 15:08:36,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:36,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060436767] [2021-10-07 15:08:36,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:36,830 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:36,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:37,099 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:37,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:37,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060436767] [2021-10-07 15:08:37,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060436767] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:37,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219367244] [2021-10-07 15:08:37,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:08:37,101 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:37,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:37,101 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) [2021-10-07 15:08:37,102 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 [2021-10-07 15:08:37,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:08:37,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:37,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 15:08:37,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:37,332 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:37,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219367244] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:37,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:37,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-10-07 15:08:37,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910065339] [2021-10-07 15:08:37,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-07 15:08:37,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:37,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-07 15:08:37,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:08:37,335 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) [2021-10-07 15:08:37,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:37,618 INFO L93 Difference]: Finished difference Result 3112 states and 12127 transitions. [2021-10-07 15:08:37,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 15:08:37,618 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 [2021-10-07 15:08:37,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:37,626 INFO L225 Difference]: With dead ends: 3112 [2021-10-07 15:08:37,626 INFO L226 Difference]: Without dead ends: 2692 [2021-10-07 15:08:37,626 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 206.4ms TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:08:37,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2692 states. [2021-10-07 15:08:37,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2692 to 1572. [2021-10-07 15:08:37,660 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) [2021-10-07 15:08:37,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 6096 transitions. [2021-10-07 15:08:37,665 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 6096 transitions. Word has length 23 [2021-10-07 15:08:37,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:37,665 INFO L470 AbstractCegarLoop]: Abstraction has 1572 states and 6096 transitions. [2021-10-07 15:08:37,666 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) [2021-10-07 15:08:37,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 6096 transitions. [2021-10-07 15:08:37,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:08:37,669 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:37,669 INFO L512 BasicCegarLoop]: trace histogram [21, 1, 1, 1] [2021-10-07 15:08:37,697 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 [2021-10-07 15:08:37,883 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,SelfDestructingSolverStorable37 [2021-10-07 15:08:37,884 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:37,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:37,885 INFO L82 PathProgramCache]: Analyzing trace with hash 743713697, now seen corresponding path program 21 times [2021-10-07 15:08:37,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:37,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80741] [2021-10-07 15:08:37,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:37,886 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:37,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:38,176 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:38,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:38,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80741] [2021-10-07 15:08:38,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80741] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:38,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744286376] [2021-10-07 15:08:38,177 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:08:38,178 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:38,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:38,178 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) [2021-10-07 15:08:38,179 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 [2021-10-07 15:08:38,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-10-07 15:08:38,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:38,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-07 15:08:38,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:38,437 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:38,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744286376] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:38,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:38,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-10-07 15:08:38,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35225255] [2021-10-07 15:08:38,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-07 15:08:38,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:38,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-07 15:08:38,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:08:38,439 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) [2021-10-07 15:08:38,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:38,696 INFO L93 Difference]: Finished difference Result 3248 states and 12660 transitions. [2021-10-07 15:08:38,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 15:08:38,696 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 [2021-10-07 15:08:38,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:38,705 INFO L225 Difference]: With dead ends: 3248 [2021-10-07 15:08:38,706 INFO L226 Difference]: Without dead ends: 2808 [2021-10-07 15:08:38,706 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 214.6ms TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:08:38,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2808 states. [2021-10-07 15:08:38,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2808 to 1632. [2021-10-07 15:08:38,737 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) [2021-10-07 15:08:38,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 6328 transitions. [2021-10-07 15:08:38,742 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 6328 transitions. Word has length 24 [2021-10-07 15:08:38,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:38,742 INFO L470 AbstractCegarLoop]: Abstraction has 1632 states and 6328 transitions. [2021-10-07 15:08:38,742 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) [2021-10-07 15:08:38,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 6328 transitions. [2021-10-07 15:08:38,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:08:38,745 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:38,745 INFO L512 BasicCegarLoop]: trace histogram [22, 1, 1, 1] [2021-10-07 15:08:38,773 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 [2021-10-07 15:08:38,959 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,SelfDestructingSolverStorable38 [2021-10-07 15:08:38,960 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:38,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:38,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1580288588, now seen corresponding path program 22 times [2021-10-07 15:08:38,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:38,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334491387] [2021-10-07 15:08:38,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:38,962 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:38,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:39,257 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:39,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:39,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334491387] [2021-10-07 15:08:39,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334491387] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:39,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155071440] [2021-10-07 15:08:39,258 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:08:39,258 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:39,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:39,259 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) [2021-10-07 15:08:39,260 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 [2021-10-07 15:08:39,423 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:08:39,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:39,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-07 15:08:39,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:39,521 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:39,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155071440] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:39,522 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:39,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-10-07 15:08:39,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131886570] [2021-10-07 15:08:39,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-07 15:08:39,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:39,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-07 15:08:39,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:08:39,525 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) [2021-10-07 15:08:39,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:39,774 INFO L93 Difference]: Finished difference Result 3384 states and 13193 transitions. [2021-10-07 15:08:39,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-07 15:08:39,774 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 [2021-10-07 15:08:39,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:39,782 INFO L225 Difference]: With dead ends: 3384 [2021-10-07 15:08:39,783 INFO L226 Difference]: Without dead ends: 2924 [2021-10-07 15:08:39,783 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 234.1ms TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:08:39,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2021-10-07 15:08:39,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 1692. [2021-10-07 15:08:39,815 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) [2021-10-07 15:08:39,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1692 states to 1692 states and 6560 transitions. [2021-10-07 15:08:39,820 INFO L78 Accepts]: Start accepts. Automaton has 1692 states and 6560 transitions. Word has length 25 [2021-10-07 15:08:39,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:39,820 INFO L470 AbstractCegarLoop]: Abstraction has 1692 states and 6560 transitions. [2021-10-07 15:08:39,820 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) [2021-10-07 15:08:39,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1692 states and 6560 transitions. [2021-10-07 15:08:39,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:08:39,823 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:39,823 INFO L512 BasicCegarLoop]: trace histogram [23, 1, 1, 1] [2021-10-07 15:08:39,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-10-07 15:08:40,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-10-07 15:08:40,024 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:40,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:40,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1744306433, now seen corresponding path program 23 times [2021-10-07 15:08:40,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:40,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023492437] [2021-10-07 15:08:40,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:40,026 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:40,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:40,382 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:40,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:40,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023492437] [2021-10-07 15:08:40,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023492437] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:40,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554593174] [2021-10-07 15:08:40,383 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:08:40,383 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:40,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:40,384 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) [2021-10-07 15:08:40,385 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 [2021-10-07 15:08:40,567 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-10-07 15:08:40,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:40,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-07 15:08:40,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:40,650 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:40,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554593174] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:40,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:40,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-10-07 15:08:40,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911757283] [2021-10-07 15:08:40,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-07 15:08:40,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:40,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-07 15:08:40,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-10-07 15:08:40,653 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) [2021-10-07 15:08:40,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:40,935 INFO L93 Difference]: Finished difference Result 3520 states and 13726 transitions. [2021-10-07 15:08:40,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 15:08:40,935 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 [2021-10-07 15:08:40,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:40,945 INFO L225 Difference]: With dead ends: 3520 [2021-10-07 15:08:40,945 INFO L226 Difference]: Without dead ends: 3040 [2021-10-07 15:08:40,945 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 289.5ms TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-10-07 15:08:40,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3040 states. [2021-10-07 15:08:40,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3040 to 1752. [2021-10-07 15:08:40,978 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) [2021-10-07 15:08:40,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1752 states to 1752 states and 6792 transitions. [2021-10-07 15:08:40,983 INFO L78 Accepts]: Start accepts. Automaton has 1752 states and 6792 transitions. Word has length 26 [2021-10-07 15:08:40,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:40,984 INFO L470 AbstractCegarLoop]: Abstraction has 1752 states and 6792 transitions. [2021-10-07 15:08:40,984 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) [2021-10-07 15:08:40,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1752 states and 6792 transitions. [2021-10-07 15:08:40,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-07 15:08:40,987 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:40,987 INFO L512 BasicCegarLoop]: trace histogram [24, 1, 1, 1] [2021-10-07 15:08:41,011 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2021-10-07 15:08:41,187 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,SelfDestructingSolverStorable40 [2021-10-07 15:08:41,188 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:41,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:41,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1761074964, now seen corresponding path program 24 times [2021-10-07 15:08:41,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:41,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143270537] [2021-10-07 15:08:41,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:41,190 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:41,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:41,534 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:41,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:41,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143270537] [2021-10-07 15:08:41,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143270537] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:41,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296420189] [2021-10-07 15:08:41,535 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:08:41,535 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:41,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:41,540 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) [2021-10-07 15:08:41,565 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 [2021-10-07 15:08:41,760 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-10-07 15:08:41,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:41,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-07 15:08:41,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:41,847 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:41,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296420189] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:41,847 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:41,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2021-10-07 15:08:41,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429805723] [2021-10-07 15:08:41,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-07 15:08:41,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:41,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-07 15:08:41,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:08:41,849 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) [2021-10-07 15:08:42,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:42,180 INFO L93 Difference]: Finished difference Result 3656 states and 14259 transitions. [2021-10-07 15:08:42,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-07 15:08:42,181 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 [2021-10-07 15:08:42,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:42,190 INFO L225 Difference]: With dead ends: 3656 [2021-10-07 15:08:42,190 INFO L226 Difference]: Without dead ends: 3156 [2021-10-07 15:08:42,191 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 279.2ms TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:08:42,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3156 states. [2021-10-07 15:08:42,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3156 to 1812. [2021-10-07 15:08:42,225 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) [2021-10-07 15:08:42,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1812 states to 1812 states and 7024 transitions. [2021-10-07 15:08:42,230 INFO L78 Accepts]: Start accepts. Automaton has 1812 states and 7024 transitions. Word has length 27 [2021-10-07 15:08:42,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:42,230 INFO L470 AbstractCegarLoop]: Abstraction has 1812 states and 7024 transitions. [2021-10-07 15:08:42,230 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) [2021-10-07 15:08:42,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1812 states and 7024 transitions. [2021-10-07 15:08:42,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 15:08:42,233 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:42,233 INFO L512 BasicCegarLoop]: trace histogram [25, 1, 1, 1] [2021-10-07 15:08:42,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2021-10-07 15:08:42,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:42,434 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:42,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:42,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1241251425, now seen corresponding path program 25 times [2021-10-07 15:08:42,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:42,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449016046] [2021-10-07 15:08:42,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:42,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:42,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:42,826 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:42,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:42,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449016046] [2021-10-07 15:08:42,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449016046] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:42,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133611995] [2021-10-07 15:08:42,827 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:08:42,827 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:42,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:42,828 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) [2021-10-07 15:08:42,844 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 [2021-10-07 15:08:43,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:43,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-07 15:08:43,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:43,109 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:43,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133611995] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:43,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:43,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-10-07 15:08:43,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194101495] [2021-10-07 15:08:43,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-07 15:08:43,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:43,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-07 15:08:43,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2021-10-07 15:08:43,112 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) [2021-10-07 15:08:43,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:43,486 INFO L93 Difference]: Finished difference Result 3792 states and 14792 transitions. [2021-10-07 15:08:43,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 15:08:43,486 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 [2021-10-07 15:08:43,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:43,495 INFO L225 Difference]: With dead ends: 3792 [2021-10-07 15:08:43,495 INFO L226 Difference]: Without dead ends: 3272 [2021-10-07 15:08:43,496 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 318.8ms TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2021-10-07 15:08:43,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3272 states. [2021-10-07 15:08:43,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3272 to 1872. [2021-10-07 15:08:43,536 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) [2021-10-07 15:08:43,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1872 states to 1872 states and 7256 transitions. [2021-10-07 15:08:43,544 INFO L78 Accepts]: Start accepts. Automaton has 1872 states and 7256 transitions. Word has length 28 [2021-10-07 15:08:43,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:43,545 INFO L470 AbstractCegarLoop]: Abstraction has 1872 states and 7256 transitions. [2021-10-07 15:08:43,545 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) [2021-10-07 15:08:43,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1872 states and 7256 transitions. [2021-10-07 15:08:43,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-07 15:08:43,549 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:43,549 INFO L512 BasicCegarLoop]: trace histogram [26, 1, 1, 1] [2021-10-07 15:08:43,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-10-07 15:08:43,762 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,SelfDestructingSolverStorable42 [2021-10-07 15:08:43,763 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:43,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:43,764 INFO L82 PathProgramCache]: Analyzing trace with hash -175911028, now seen corresponding path program 26 times [2021-10-07 15:08:43,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:43,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942001722] [2021-10-07 15:08:43,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:43,765 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:44,186 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:44,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:44,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942001722] [2021-10-07 15:08:44,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942001722] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:44,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014054041] [2021-10-07 15:08:44,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:08:44,187 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:44,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:44,188 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) [2021-10-07 15:08:44,189 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 [2021-10-07 15:08:44,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:08:44,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:44,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-07 15:08:44,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:44,494 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:44,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014054041] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:44,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:44,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2021-10-07 15:08:44,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746136260] [2021-10-07 15:08:44,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:08:44,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:44,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:08:44,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:08:44,496 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) [2021-10-07 15:08:44,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:44,827 INFO L93 Difference]: Finished difference Result 3928 states and 15325 transitions. [2021-10-07 15:08:44,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-07 15:08:44,828 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 [2021-10-07 15:08:44,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:44,838 INFO L225 Difference]: With dead ends: 3928 [2021-10-07 15:08:44,838 INFO L226 Difference]: Without dead ends: 3388 [2021-10-07 15:08:44,838 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 342.6ms TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:08:44,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3388 states. [2021-10-07 15:08:44,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3388 to 1932. [2021-10-07 15:08:44,878 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) [2021-10-07 15:08:44,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 7488 transitions. [2021-10-07 15:08:44,884 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 7488 transitions. Word has length 29 [2021-10-07 15:08:44,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:44,884 INFO L470 AbstractCegarLoop]: Abstraction has 1932 states and 7488 transitions. [2021-10-07 15:08:44,884 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) [2021-10-07 15:08:44,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 7488 transitions. [2021-10-07 15:08:44,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-07 15:08:44,887 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:44,887 INFO L512 BasicCegarLoop]: trace histogram [27, 1, 1, 1] [2021-10-07 15:08:44,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-10-07 15:08:45,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:45,088 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:45,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:45,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1158274111, now seen corresponding path program 27 times [2021-10-07 15:08:45,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:45,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780169025] [2021-10-07 15:08:45,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:45,105 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:45,534 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:45,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:45,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780169025] [2021-10-07 15:08:45,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780169025] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:45,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144944456] [2021-10-07 15:08:45,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:08:45,535 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:45,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:45,537 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) [2021-10-07 15:08:45,555 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 [2021-10-07 15:08:45,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-10-07 15:08:45,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:45,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-07 15:08:45,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:45,885 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:45,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144944456] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:45,885 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:45,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-10-07 15:08:45,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290493336] [2021-10-07 15:08:45,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-07 15:08:45,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:45,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-07 15:08:45,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-10-07 15:08:45,887 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) [2021-10-07 15:08:46,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:46,291 INFO L93 Difference]: Finished difference Result 4064 states and 15858 transitions. [2021-10-07 15:08:46,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-07 15:08:46,291 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 [2021-10-07 15:08:46,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:46,301 INFO L225 Difference]: With dead ends: 4064 [2021-10-07 15:08:46,301 INFO L226 Difference]: Without dead ends: 3504 [2021-10-07 15:08:46,301 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 337.1ms TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-10-07 15:08:46,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3504 states. [2021-10-07 15:08:46,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3504 to 1992. [2021-10-07 15:08:46,339 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) [2021-10-07 15:08:46,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1992 states to 1992 states and 7720 transitions. [2021-10-07 15:08:46,345 INFO L78 Accepts]: Start accepts. Automaton has 1992 states and 7720 transitions. Word has length 30 [2021-10-07 15:08:46,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:46,345 INFO L470 AbstractCegarLoop]: Abstraction has 1992 states and 7720 transitions. [2021-10-07 15:08:46,345 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) [2021-10-07 15:08:46,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1992 states and 7720 transitions. [2021-10-07 15:08:46,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-07 15:08:46,349 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:46,349 INFO L512 BasicCegarLoop]: trace histogram [28, 1, 1, 1] [2021-10-07 15:08:46,373 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2021-10-07 15:08:46,549 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,SelfDestructingSolverStorable44 [2021-10-07 15:08:46,550 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:46,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:46,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1546758612, now seen corresponding path program 28 times [2021-10-07 15:08:46,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:46,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996129945] [2021-10-07 15:08:46,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:46,552 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:46,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:46,970 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:46,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:46,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996129945] [2021-10-07 15:08:46,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996129945] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:46,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217499890] [2021-10-07 15:08:46,971 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:08:46,972 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:46,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:46,973 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) [2021-10-07 15:08:46,974 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 [2021-10-07 15:08:47,191 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:08:47,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:47,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-07 15:08:47,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:47,286 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:47,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217499890] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:47,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:47,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-10-07 15:08:47,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283960010] [2021-10-07 15:08:47,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-07 15:08:47,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:47,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-07 15:08:47,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-10-07 15:08:47,289 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) [2021-10-07 15:08:47,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:47,667 INFO L93 Difference]: Finished difference Result 4200 states and 16391 transitions. [2021-10-07 15:08:47,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-07 15:08:47,667 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 [2021-10-07 15:08:47,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:47,678 INFO L225 Difference]: With dead ends: 4200 [2021-10-07 15:08:47,678 INFO L226 Difference]: Without dead ends: 3620 [2021-10-07 15:08:47,678 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 344.9ms TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-10-07 15:08:47,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3620 states. [2021-10-07 15:08:47,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3620 to 2052. [2021-10-07 15:08:47,717 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) [2021-10-07 15:08:47,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 7952 transitions. [2021-10-07 15:08:47,722 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 7952 transitions. Word has length 31 [2021-10-07 15:08:47,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:47,723 INFO L470 AbstractCegarLoop]: Abstraction has 2052 states and 7952 transitions. [2021-10-07 15:08:47,723 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) [2021-10-07 15:08:47,723 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 7952 transitions. [2021-10-07 15:08:47,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-07 15:08:47,726 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:47,726 INFO L512 BasicCegarLoop]: trace histogram [29, 1, 1, 1] [2021-10-07 15:08:47,754 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2021-10-07 15:08:47,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:47,927 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:47,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:47,928 INFO L82 PathProgramCache]: Analyzing trace with hash -704876255, now seen corresponding path program 29 times [2021-10-07 15:08:47,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:47,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824332018] [2021-10-07 15:08:47,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:47,929 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:47,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:48,374 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:48,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:48,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824332018] [2021-10-07 15:08:48,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824332018] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:48,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275870578] [2021-10-07 15:08:48,375 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:08:48,376 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:48,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:48,377 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) [2021-10-07 15:08:48,378 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 [2021-10-07 15:08:48,616 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-10-07 15:08:48,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:48,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-07 15:08:48,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:48,713 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:48,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275870578] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:48,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:48,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-10-07 15:08:48,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624713223] [2021-10-07 15:08:48,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-10-07 15:08:48,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:48,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-10-07 15:08:48,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 15:08:48,715 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) [2021-10-07 15:08:49,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:49,253 INFO L93 Difference]: Finished difference Result 4336 states and 16924 transitions. [2021-10-07 15:08:49,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-07 15:08:49,254 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 [2021-10-07 15:08:49,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:49,268 INFO L225 Difference]: With dead ends: 4336 [2021-10-07 15:08:49,268 INFO L226 Difference]: Without dead ends: 3736 [2021-10-07 15:08:49,269 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 367.4ms TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 15:08:49,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3736 states. [2021-10-07 15:08:49,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3736 to 2112. [2021-10-07 15:08:49,317 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) [2021-10-07 15:08:49,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 8184 transitions. [2021-10-07 15:08:49,326 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 8184 transitions. Word has length 32 [2021-10-07 15:08:49,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:49,326 INFO L470 AbstractCegarLoop]: Abstraction has 2112 states and 8184 transitions. [2021-10-07 15:08:49,326 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) [2021-10-07 15:08:49,327 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 8184 transitions. [2021-10-07 15:08:49,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-07 15:08:49,331 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:49,331 INFO L512 BasicCegarLoop]: trace histogram [30, 1, 1, 1] [2021-10-07 15:08:49,357 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 [2021-10-07 15:08:49,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:49,545 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:49,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:49,545 INFO L82 PathProgramCache]: Analyzing trace with hash -376326964, now seen corresponding path program 30 times [2021-10-07 15:08:49,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:49,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634898519] [2021-10-07 15:08:49,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:49,547 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:49,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:50,075 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:50,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:50,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634898519] [2021-10-07 15:08:50,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634898519] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:50,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910195264] [2021-10-07 15:08:50,076 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:08:50,076 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:50,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:50,078 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) [2021-10-07 15:08:50,094 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 [2021-10-07 15:08:50,334 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-10-07 15:08:50,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:50,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-07 15:08:50,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:50,428 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:50,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910195264] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:50,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:50,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-10-07 15:08:50,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761771445] [2021-10-07 15:08:50,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-10-07 15:08:50,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:50,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-10-07 15:08:50,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-10-07 15:08:50,432 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) [2021-10-07 15:08:50,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:50,873 INFO L93 Difference]: Finished difference Result 4472 states and 17457 transitions. [2021-10-07 15:08:50,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-07 15:08:50,873 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 [2021-10-07 15:08:50,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:50,884 INFO L225 Difference]: With dead ends: 4472 [2021-10-07 15:08:50,884 INFO L226 Difference]: Without dead ends: 3852 [2021-10-07 15:08:50,885 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 446.0ms TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-10-07 15:08:50,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3852 states. [2021-10-07 15:08:50,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3852 to 2172. [2021-10-07 15:08:50,926 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) [2021-10-07 15:08:50,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2172 states to 2172 states and 8416 transitions. [2021-10-07 15:08:50,932 INFO L78 Accepts]: Start accepts. Automaton has 2172 states and 8416 transitions. Word has length 33 [2021-10-07 15:08:50,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:50,932 INFO L470 AbstractCegarLoop]: Abstraction has 2172 states and 8416 transitions. [2021-10-07 15:08:50,932 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) [2021-10-07 15:08:50,933 INFO L276 IsEmpty]: Start isEmpty. Operand 2172 states and 8416 transitions. [2021-10-07 15:08:50,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-07 15:08:50,936 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:50,936 INFO L512 BasicCegarLoop]: trace histogram [31, 1, 1, 1] [2021-10-07 15:08:50,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2021-10-07 15:08:51,137 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,SelfDestructingSolverStorable47 [2021-10-07 15:08:51,137 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:51,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:51,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1218766465, now seen corresponding path program 31 times [2021-10-07 15:08:51,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:51,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105521738] [2021-10-07 15:08:51,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:51,139 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:51,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:51,587 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:51,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:51,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105521738] [2021-10-07 15:08:51,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105521738] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:51,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284194227] [2021-10-07 15:08:51,588 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:08:51,589 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:51,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:51,590 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) [2021-10-07 15:08:51,614 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 [2021-10-07 15:08:51,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:51,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-07 15:08:51,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:51,923 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:51,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284194227] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:51,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:51,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2021-10-07 15:08:51,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623444755] [2021-10-07 15:08:51,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-10-07 15:08:51,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:51,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-10-07 15:08:51,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-10-07 15:08:51,926 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) [2021-10-07 15:08:52,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:52,402 INFO L93 Difference]: Finished difference Result 4608 states and 17990 transitions. [2021-10-07 15:08:52,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-07 15:08:52,403 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 [2021-10-07 15:08:52,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:52,414 INFO L225 Difference]: With dead ends: 4608 [2021-10-07 15:08:52,414 INFO L226 Difference]: Without dead ends: 3968 [2021-10-07 15:08:52,415 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 370.9ms TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-10-07 15:08:52,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3968 states. [2021-10-07 15:08:52,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3968 to 2232. [2021-10-07 15:08:52,459 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) [2021-10-07 15:08:52,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2232 states to 2232 states and 8648 transitions. [2021-10-07 15:08:52,466 INFO L78 Accepts]: Start accepts. Automaton has 2232 states and 8648 transitions. Word has length 34 [2021-10-07 15:08:52,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:52,466 INFO L470 AbstractCegarLoop]: Abstraction has 2232 states and 8648 transitions. [2021-10-07 15:08:52,466 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) [2021-10-07 15:08:52,466 INFO L276 IsEmpty]: Start isEmpty. Operand 2232 states and 8648 transitions. [2021-10-07 15:08:52,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-07 15:08:52,470 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:52,470 INFO L512 BasicCegarLoop]: trace histogram [32, 1, 1, 1] [2021-10-07 15:08:52,494 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 [2021-10-07 15:08:52,670 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,SelfDestructingSolverStorable48 [2021-10-07 15:08:52,671 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:52,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:52,672 INFO L82 PathProgramCache]: Analyzing trace with hash -872944788, now seen corresponding path program 32 times [2021-10-07 15:08:52,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:52,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207677278] [2021-10-07 15:08:52,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:52,673 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:52,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:53,193 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:53,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:53,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207677278] [2021-10-07 15:08:53,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207677278] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:53,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104285054] [2021-10-07 15:08:53,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:08:53,194 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:53,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:53,195 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) [2021-10-07 15:08:53,197 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 [2021-10-07 15:08:53,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:08:53,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:53,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-07 15:08:53,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:53,556 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:53,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104285054] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:53,556 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:53,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-10-07 15:08:53,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304282481] [2021-10-07 15:08:53,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-10-07 15:08:53,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:53,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-10-07 15:08:53,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2021-10-07 15:08:53,558 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) [2021-10-07 15:08:54,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:54,229 INFO L93 Difference]: Finished difference Result 4744 states and 18523 transitions. [2021-10-07 15:08:54,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-07 15:08:54,230 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 [2021-10-07 15:08:54,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:54,248 INFO L225 Difference]: With dead ends: 4744 [2021-10-07 15:08:54,248 INFO L226 Difference]: Without dead ends: 4084 [2021-10-07 15:08:54,249 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 437.8ms TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2021-10-07 15:08:54,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4084 states. [2021-10-07 15:08:54,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4084 to 2292. [2021-10-07 15:08:54,318 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) [2021-10-07 15:08:54,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2292 states to 2292 states and 8880 transitions. [2021-10-07 15:08:54,330 INFO L78 Accepts]: Start accepts. Automaton has 2292 states and 8880 transitions. Word has length 35 [2021-10-07 15:08:54,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:54,330 INFO L470 AbstractCegarLoop]: Abstraction has 2292 states and 8880 transitions. [2021-10-07 15:08:54,330 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) [2021-10-07 15:08:54,330 INFO L276 IsEmpty]: Start isEmpty. Operand 2292 states and 8880 transitions. [2021-10-07 15:08:54,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-07 15:08:54,337 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:54,337 INFO L512 BasicCegarLoop]: trace histogram [33, 1, 1, 1] [2021-10-07 15:08:54,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2021-10-07 15:08:54,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-10-07 15:08:54,551 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:54,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:54,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1291484191, now seen corresponding path program 33 times [2021-10-07 15:08:54,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:54,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463745830] [2021-10-07 15:08:54,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:54,552 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:54,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:55,111 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:55,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:55,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463745830] [2021-10-07 15:08:55,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463745830] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:55,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710217281] [2021-10-07 15:08:55,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:08:55,112 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:55,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:55,113 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) [2021-10-07 15:08:55,114 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 [2021-10-07 15:08:55,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-10-07 15:08:55,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:55,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-07 15:08:55,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:55,496 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:55,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710217281] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:55,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:55,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-10-07 15:08:55,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734049337] [2021-10-07 15:08:55,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-10-07 15:08:55,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:55,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-10-07 15:08:55,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2021-10-07 15:08:55,499 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) [2021-10-07 15:08:55,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:55,992 INFO L93 Difference]: Finished difference Result 4880 states and 19056 transitions. [2021-10-07 15:08:55,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-07 15:08:55,992 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 [2021-10-07 15:08:55,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:56,006 INFO L225 Difference]: With dead ends: 4880 [2021-10-07 15:08:56,006 INFO L226 Difference]: Without dead ends: 4200 [2021-10-07 15:08:56,006 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 470.0ms TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2021-10-07 15:08:56,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4200 states. [2021-10-07 15:08:56,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4200 to 2352. [2021-10-07 15:08:56,054 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) [2021-10-07 15:08:56,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2352 states to 2352 states and 9112 transitions. [2021-10-07 15:08:56,060 INFO L78 Accepts]: Start accepts. Automaton has 2352 states and 9112 transitions. Word has length 36 [2021-10-07 15:08:56,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:56,061 INFO L470 AbstractCegarLoop]: Abstraction has 2352 states and 9112 transitions. [2021-10-07 15:08:56,061 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) [2021-10-07 15:08:56,061 INFO L276 IsEmpty]: Start isEmpty. Operand 2352 states and 9112 transitions. [2021-10-07 15:08:56,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-07 15:08:56,065 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:56,065 INFO L512 BasicCegarLoop]: trace histogram [34, 1, 1, 1] [2021-10-07 15:08:56,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-10-07 15:08:56,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:56,266 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:56,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:56,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1381303796, now seen corresponding path program 34 times [2021-10-07 15:08:56,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:56,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778034776] [2021-10-07 15:08:56,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:56,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:56,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:56,841 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:56,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:56,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778034776] [2021-10-07 15:08:56,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778034776] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:56,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556379778] [2021-10-07 15:08:56,842 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:08:56,842 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:56,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:56,843 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) [2021-10-07 15:08:56,845 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 [2021-10-07 15:08:57,123 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:08:57,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:57,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-07 15:08:57,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:57,236 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:57,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556379778] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:57,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:57,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-10-07 15:08:57,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639012390] [2021-10-07 15:08:57,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-10-07 15:08:57,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:57,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-10-07 15:08:57,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 15:08:57,239 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) [2021-10-07 15:08:57,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:57,820 INFO L93 Difference]: Finished difference Result 5016 states and 19589 transitions. [2021-10-07 15:08:57,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-07 15:08:57,821 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 [2021-10-07 15:08:57,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:57,833 INFO L225 Difference]: With dead ends: 5016 [2021-10-07 15:08:57,833 INFO L226 Difference]: Without dead ends: 4316 [2021-10-07 15:08:57,834 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 485.9ms TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 15:08:57,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4316 states. [2021-10-07 15:08:57,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4316 to 2412. [2021-10-07 15:08:57,881 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) [2021-10-07 15:08:57,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 9344 transitions. [2021-10-07 15:08:57,888 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 9344 transitions. Word has length 37 [2021-10-07 15:08:57,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:57,888 INFO L470 AbstractCegarLoop]: Abstraction has 2412 states and 9344 transitions. [2021-10-07 15:08:57,888 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) [2021-10-07 15:08:57,888 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 9344 transitions. [2021-10-07 15:08:57,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-07 15:08:57,892 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:57,893 INFO L512 BasicCegarLoop]: trace histogram [35, 1, 1, 1] [2021-10-07 15:08:57,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2021-10-07 15:08:58,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:58,094 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:58,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:58,094 INFO L82 PathProgramCache]: Analyzing trace with hash 129255745, now seen corresponding path program 35 times [2021-10-07 15:08:58,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:58,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315041636] [2021-10-07 15:08:58,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:58,095 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:58,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:58,732 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:58,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:58,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315041636] [2021-10-07 15:08:58,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315041636] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:58,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686724991] [2021-10-07 15:08:58,733 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:08:58,733 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:58,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:58,734 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) [2021-10-07 15:08:58,735 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 [2021-10-07 15:08:59,038 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2021-10-07 15:08:59,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:59,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-07 15:08:59,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:59,144 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:59,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686724991] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:59,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:59,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2021-10-07 15:08:59,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717807353] [2021-10-07 15:08:59,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-10-07 15:08:59,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:59,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-10-07 15:08:59,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-10-07 15:08:59,146 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) [2021-10-07 15:08:59,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:59,682 INFO L93 Difference]: Finished difference Result 5152 states and 20122 transitions. [2021-10-07 15:08:59,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-07 15:08:59,683 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 [2021-10-07 15:08:59,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:59,696 INFO L225 Difference]: With dead ends: 5152 [2021-10-07 15:08:59,696 INFO L226 Difference]: Without dead ends: 4432 [2021-10-07 15:08:59,696 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 517.0ms TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-10-07 15:08:59,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4432 states. [2021-10-07 15:08:59,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4432 to 2472. [2021-10-07 15:08:59,744 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) [2021-10-07 15:08:59,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2472 states to 2472 states and 9576 transitions. [2021-10-07 15:08:59,751 INFO L78 Accepts]: Start accepts. Automaton has 2472 states and 9576 transitions. Word has length 38 [2021-10-07 15:08:59,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:59,751 INFO L470 AbstractCegarLoop]: Abstraction has 2472 states and 9576 transitions. [2021-10-07 15:08:59,751 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) [2021-10-07 15:08:59,751 INFO L276 IsEmpty]: Start isEmpty. Operand 2472 states and 9576 transitions. [2021-10-07 15:08:59,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-07 15:08:59,755 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:59,756 INFO L512 BasicCegarLoop]: trace histogram [36, 1, 1, 1] [2021-10-07 15:08:59,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2021-10-07 15:08:59,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:59,956 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:08:59,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:59,957 INFO L82 PathProgramCache]: Analyzing trace with hash -288038740, now seen corresponding path program 36 times [2021-10-07 15:08:59,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:59,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874709255] [2021-10-07 15:08:59,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:59,959 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:59,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:00,626 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:00,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:00,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874709255] [2021-10-07 15:09:00,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874709255] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:00,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230085164] [2021-10-07 15:09:00,627 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:09:00,627 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:00,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:00,629 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) [2021-10-07 15:09:00,630 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 [2021-10-07 15:09:00,951 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-10-07 15:09:00,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:00,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-07 15:09:00,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:01,069 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:01,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230085164] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:01,070 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:01,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2021-10-07 15:09:01,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697676448] [2021-10-07 15:09:01,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-10-07 15:09:01,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:01,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-10-07 15:09:01,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2021-10-07 15:09:01,072 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) [2021-10-07 15:09:01,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:01,635 INFO L93 Difference]: Finished difference Result 5288 states and 20655 transitions. [2021-10-07 15:09:01,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-07 15:09:01,635 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 [2021-10-07 15:09:01,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:01,648 INFO L225 Difference]: With dead ends: 5288 [2021-10-07 15:09:01,649 INFO L226 Difference]: Without dead ends: 4548 [2021-10-07 15:09:01,649 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 581.9ms TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2021-10-07 15:09:01,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4548 states. [2021-10-07 15:09:01,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4548 to 2532. [2021-10-07 15:09:01,698 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) [2021-10-07 15:09:01,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2532 states to 2532 states and 9808 transitions. [2021-10-07 15:09:01,706 INFO L78 Accepts]: Start accepts. Automaton has 2532 states and 9808 transitions. Word has length 39 [2021-10-07 15:09:01,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:01,706 INFO L470 AbstractCegarLoop]: Abstraction has 2532 states and 9808 transitions. [2021-10-07 15:09:01,706 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) [2021-10-07 15:09:01,706 INFO L276 IsEmpty]: Start isEmpty. Operand 2532 states and 9808 transitions. [2021-10-07 15:09:01,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-07 15:09:01,710 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:01,711 INFO L512 BasicCegarLoop]: trace histogram [37, 1, 1, 1] [2021-10-07 15:09:01,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2021-10-07 15:09:01,911 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,SelfDestructingSolverStorable53 [2021-10-07 15:09:01,912 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:09:01,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:01,912 INFO L82 PathProgramCache]: Analyzing trace with hash -339265887, now seen corresponding path program 37 times [2021-10-07 15:09:01,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:01,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740131292] [2021-10-07 15:09:01,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:01,914 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:01,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:02,602 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:02,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:02,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740131292] [2021-10-07 15:09:02,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740131292] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:02,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128660165] [2021-10-07 15:09:02,603 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:09:02,603 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:02,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:02,604 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) [2021-10-07 15:09:02,606 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 [2021-10-07 15:09:02,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:02,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 40 conjunts are in the unsatisfiable core [2021-10-07 15:09:02,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:03,031 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:03,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128660165] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:03,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:03,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2021-10-07 15:09:03,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885789491] [2021-10-07 15:09:03,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-10-07 15:09:03,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:03,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-10-07 15:09:03,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2021-10-07 15:09:03,035 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) [2021-10-07 15:09:03,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:03,636 INFO L93 Difference]: Finished difference Result 5424 states and 21188 transitions. [2021-10-07 15:09:03,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-07 15:09:03,637 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 [2021-10-07 15:09:03,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:03,650 INFO L225 Difference]: With dead ends: 5424 [2021-10-07 15:09:03,651 INFO L226 Difference]: Without dead ends: 4664 [2021-10-07 15:09:03,651 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 595.5ms TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2021-10-07 15:09:03,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4664 states. [2021-10-07 15:09:03,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4664 to 2592. [2021-10-07 15:09:03,701 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) [2021-10-07 15:09:03,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2592 states to 2592 states and 10040 transitions. [2021-10-07 15:09:03,709 INFO L78 Accepts]: Start accepts. Automaton has 2592 states and 10040 transitions. Word has length 40 [2021-10-07 15:09:03,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:03,709 INFO L470 AbstractCegarLoop]: Abstraction has 2592 states and 10040 transitions. [2021-10-07 15:09:03,709 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) [2021-10-07 15:09:03,709 INFO L276 IsEmpty]: Start isEmpty. Operand 2592 states and 10040 transitions. [2021-10-07 15:09:03,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-07 15:09:03,714 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:03,714 INFO L512 BasicCegarLoop]: trace histogram [38, 1, 1, 1] [2021-10-07 15:09:03,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2021-10-07 15:09:03,914 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,SelfDestructingSolverStorable54 [2021-10-07 15:09:03,915 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:09:03,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:03,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1927307444, now seen corresponding path program 38 times [2021-10-07 15:09:03,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:03,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44991330] [2021-10-07 15:09:03,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:03,917 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:03,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:04,607 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:04,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:04,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44991330] [2021-10-07 15:09:04,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44991330] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:04,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97341215] [2021-10-07 15:09:04,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:09:04,609 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:04,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:04,611 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) [2021-10-07 15:09:04,614 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 [2021-10-07 15:09:04,947 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:09:04,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:04,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-07 15:09:04,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:05,049 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:05,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97341215] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:05,049 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:05,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-10-07 15:09:05,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653480354] [2021-10-07 15:09:05,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-10-07 15:09:05,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:05,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-10-07 15:09:05,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2021-10-07 15:09:05,052 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) [2021-10-07 15:09:05,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:05,709 INFO L93 Difference]: Finished difference Result 5560 states and 21721 transitions. [2021-10-07 15:09:05,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-07 15:09:05,710 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 [2021-10-07 15:09:05,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:05,724 INFO L225 Difference]: With dead ends: 5560 [2021-10-07 15:09:05,724 INFO L226 Difference]: Without dead ends: 4780 [2021-10-07 15:09:05,724 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 600.7ms TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2021-10-07 15:09:05,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4780 states. [2021-10-07 15:09:05,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4780 to 2652. [2021-10-07 15:09:05,827 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) [2021-10-07 15:09:05,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2652 states to 2652 states and 10272 transitions. [2021-10-07 15:09:05,835 INFO L78 Accepts]: Start accepts. Automaton has 2652 states and 10272 transitions. Word has length 41 [2021-10-07 15:09:05,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:05,835 INFO L470 AbstractCegarLoop]: Abstraction has 2652 states and 10272 transitions. [2021-10-07 15:09:05,835 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) [2021-10-07 15:09:05,835 INFO L276 IsEmpty]: Start isEmpty. Operand 2652 states and 10272 transitions. [2021-10-07 15:09:05,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-07 15:09:05,840 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:05,840 INFO L512 BasicCegarLoop]: trace histogram [39, 1, 1, 1] [2021-10-07 15:09:05,865 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 [2021-10-07 15:09:06,040 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,SelfDestructingSolverStorable55 [2021-10-07 15:09:06,041 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:09:06,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:06,042 INFO L82 PathProgramCache]: Analyzing trace with hash 383011841, now seen corresponding path program 39 times [2021-10-07 15:09:06,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:06,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170083651] [2021-10-07 15:09:06,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:06,043 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:06,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:06,790 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:06,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:06,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170083651] [2021-10-07 15:09:06,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170083651] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:06,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091758798] [2021-10-07 15:09:06,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:09:06,792 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:06,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:06,793 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) [2021-10-07 15:09:06,794 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 [2021-10-07 15:09:07,157 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2021-10-07 15:09:07,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:07,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-07 15:09:07,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:07,267 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:07,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091758798] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:07,268 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:07,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2021-10-07 15:09:07,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267274400] [2021-10-07 15:09:07,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-10-07 15:09:07,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:07,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-10-07 15:09:07,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2021-10-07 15:09:07,270 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) [2021-10-07 15:09:07,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:07,926 INFO L93 Difference]: Finished difference Result 5696 states and 22254 transitions. [2021-10-07 15:09:07,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-07 15:09:07,927 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 [2021-10-07 15:09:07,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:07,941 INFO L225 Difference]: With dead ends: 5696 [2021-10-07 15:09:07,941 INFO L226 Difference]: Without dead ends: 4896 [2021-10-07 15:09:07,942 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 655.5ms TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2021-10-07 15:09:07,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4896 states. [2021-10-07 15:09:07,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4896 to 2712. [2021-10-07 15:09:07,995 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) [2021-10-07 15:09:08,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2712 states to 2712 states and 10504 transitions. [2021-10-07 15:09:08,003 INFO L78 Accepts]: Start accepts. Automaton has 2712 states and 10504 transitions. Word has length 42 [2021-10-07 15:09:08,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:08,004 INFO L470 AbstractCegarLoop]: Abstraction has 2712 states and 10504 transitions. [2021-10-07 15:09:08,004 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) [2021-10-07 15:09:08,004 INFO L276 IsEmpty]: Start isEmpty. Operand 2712 states and 10504 transitions. [2021-10-07 15:09:08,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-07 15:09:08,010 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:08,010 INFO L512 BasicCegarLoop]: trace histogram [40, 1, 1, 1] [2021-10-07 15:09:08,034 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2021-10-07 15:09:08,211 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,SelfDestructingSolverStorable56 [2021-10-07 15:09:08,211 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:09:08,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:08,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1011534356, now seen corresponding path program 40 times [2021-10-07 15:09:08,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:08,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286398954] [2021-10-07 15:09:08,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:08,214 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:08,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:08,953 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:08,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:08,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286398954] [2021-10-07 15:09:08,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286398954] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:08,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100717082] [2021-10-07 15:09:08,955 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:09:08,955 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:08,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:08,956 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) [2021-10-07 15:09:08,958 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 [2021-10-07 15:09:09,311 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:09:09,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:09,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-07 15:09:09,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:09,426 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:09,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100717082] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:09,426 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:09,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-10-07 15:09:09,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934138624] [2021-10-07 15:09:09,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-10-07 15:09:09,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:09,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-10-07 15:09:09,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2021-10-07 15:09:09,428 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) [2021-10-07 15:09:10,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:10,172 INFO L93 Difference]: Finished difference Result 5832 states and 22787 transitions. [2021-10-07 15:09:10,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-07 15:09:10,173 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 [2021-10-07 15:09:10,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:10,188 INFO L225 Difference]: With dead ends: 5832 [2021-10-07 15:09:10,188 INFO L226 Difference]: Without dead ends: 5012 [2021-10-07 15:09:10,188 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 648.1ms TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2021-10-07 15:09:10,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5012 states. [2021-10-07 15:09:10,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5012 to 2772. [2021-10-07 15:09:10,243 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) [2021-10-07 15:09:10,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2772 states to 2772 states and 10736 transitions. [2021-10-07 15:09:10,251 INFO L78 Accepts]: Start accepts. Automaton has 2772 states and 10736 transitions. Word has length 43 [2021-10-07 15:09:10,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:10,252 INFO L470 AbstractCegarLoop]: Abstraction has 2772 states and 10736 transitions. [2021-10-07 15:09:10,256 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) [2021-10-07 15:09:10,256 INFO L276 IsEmpty]: Start isEmpty. Operand 2772 states and 10736 transitions. [2021-10-07 15:09:10,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-07 15:09:10,263 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:10,263 INFO L512 BasicCegarLoop]: trace histogram [41, 1, 1, 1] [2021-10-07 15:09:10,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2021-10-07 15:09:10,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:10,479 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:09:10,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:10,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1292793503, now seen corresponding path program 41 times [2021-10-07 15:09:10,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:10,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310596181] [2021-10-07 15:09:10,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:10,481 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:11,303 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:11,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:11,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310596181] [2021-10-07 15:09:11,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310596181] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:11,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369369583] [2021-10-07 15:09:11,304 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:09:11,304 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:11,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:11,306 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) [2021-10-07 15:09:11,321 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 [2021-10-07 15:09:11,673 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2021-10-07 15:09:11,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:11,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-07 15:09:11,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:11,793 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:11,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369369583] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:11,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:11,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 43 [2021-10-07 15:09:11,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441754915] [2021-10-07 15:09:11,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-10-07 15:09:11,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:11,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-10-07 15:09:11,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2021-10-07 15:09:11,796 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) [2021-10-07 15:09:12,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:12,571 INFO L93 Difference]: Finished difference Result 5968 states and 23320 transitions. [2021-10-07 15:09:12,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-07 15:09:12,572 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 [2021-10-07 15:09:12,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:12,587 INFO L225 Difference]: With dead ends: 5968 [2021-10-07 15:09:12,587 INFO L226 Difference]: Without dead ends: 5128 [2021-10-07 15:09:12,587 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 718.0ms TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2021-10-07 15:09:12,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5128 states. [2021-10-07 15:09:12,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5128 to 2832. [2021-10-07 15:09:12,643 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) [2021-10-07 15:09:12,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2832 states to 2832 states and 10968 transitions. [2021-10-07 15:09:12,651 INFO L78 Accepts]: Start accepts. Automaton has 2832 states and 10968 transitions. Word has length 44 [2021-10-07 15:09:12,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:12,651 INFO L470 AbstractCegarLoop]: Abstraction has 2832 states and 10968 transitions. [2021-10-07 15:09:12,651 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) [2021-10-07 15:09:12,651 INFO L276 IsEmpty]: Start isEmpty. Operand 2832 states and 10968 transitions. [2021-10-07 15:09:12,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-07 15:09:12,656 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:12,656 INFO L512 BasicCegarLoop]: trace histogram [42, 1, 1, 1] [2021-10-07 15:09:12,680 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2021-10-07 15:09:12,857 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,SelfDestructingSolverStorable58 [2021-10-07 15:09:12,857 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:09:12,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:12,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1421892468, now seen corresponding path program 42 times [2021-10-07 15:09:12,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:12,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317186372] [2021-10-07 15:09:12,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:12,860 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:13,671 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:13,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:13,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317186372] [2021-10-07 15:09:13,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317186372] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:13,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612603588] [2021-10-07 15:09:13,672 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:09:13,672 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:13,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:13,674 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) [2021-10-07 15:09:13,675 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 [2021-10-07 15:09:14,102 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2021-10-07 15:09:14,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:14,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-07 15:09:14,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:14,213 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:14,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612603588] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:14,214 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:14,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 44 [2021-10-07 15:09:14,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950252546] [2021-10-07 15:09:14,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-10-07 15:09:14,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:14,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-10-07 15:09:14,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-10-07 15:09:14,216 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) [2021-10-07 15:09:15,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:15,050 INFO L93 Difference]: Finished difference Result 6104 states and 23853 transitions. [2021-10-07 15:09:15,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-07 15:09:15,051 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 [2021-10-07 15:09:15,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:15,066 INFO L225 Difference]: With dead ends: 6104 [2021-10-07 15:09:15,067 INFO L226 Difference]: Without dead ends: 5244 [2021-10-07 15:09:15,067 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 713.8ms TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-10-07 15:09:15,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5244 states. [2021-10-07 15:09:15,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5244 to 2892. [2021-10-07 15:09:15,124 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) [2021-10-07 15:09:15,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 11200 transitions. [2021-10-07 15:09:15,132 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 11200 transitions. Word has length 45 [2021-10-07 15:09:15,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:15,133 INFO L470 AbstractCegarLoop]: Abstraction has 2892 states and 11200 transitions. [2021-10-07 15:09:15,133 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) [2021-10-07 15:09:15,133 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 11200 transitions. [2021-10-07 15:09:15,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-07 15:09:15,138 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:15,138 INFO L512 BasicCegarLoop]: trace histogram [43, 1, 1, 1] [2021-10-07 15:09:15,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2021-10-07 15:09:15,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,53 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:15,352 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:09:15,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:15,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1128993087, now seen corresponding path program 43 times [2021-10-07 15:09:15,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:15,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433945956] [2021-10-07 15:09:15,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:15,354 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:15,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:16,233 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:16,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:16,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433945956] [2021-10-07 15:09:16,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433945956] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:16,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931250711] [2021-10-07 15:09:16,234 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:09:16,234 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:16,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:16,235 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) [2021-10-07 15:09:16,236 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 [2021-10-07 15:09:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:16,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 46 conjunts are in the unsatisfiable core [2021-10-07 15:09:16,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:16,749 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:16,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931250711] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:16,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:16,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 45 [2021-10-07 15:09:16,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29866921] [2021-10-07 15:09:16,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-10-07 15:09:16,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:16,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-10-07 15:09:16,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2021-10-07 15:09:16,752 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) [2021-10-07 15:09:17,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:17,606 INFO L93 Difference]: Finished difference Result 6240 states and 24386 transitions. [2021-10-07 15:09:17,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-07 15:09:17,607 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 [2021-10-07 15:09:17,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:17,622 INFO L225 Difference]: With dead ends: 6240 [2021-10-07 15:09:17,622 INFO L226 Difference]: Without dead ends: 5360 [2021-10-07 15:09:17,622 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 778.2ms TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2021-10-07 15:09:17,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5360 states. [2021-10-07 15:09:17,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5360 to 2952. [2021-10-07 15:09:17,680 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) [2021-10-07 15:09:17,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2952 states to 2952 states and 11432 transitions. [2021-10-07 15:09:17,689 INFO L78 Accepts]: Start accepts. Automaton has 2952 states and 11432 transitions. Word has length 46 [2021-10-07 15:09:17,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:17,689 INFO L470 AbstractCegarLoop]: Abstraction has 2952 states and 11432 transitions. [2021-10-07 15:09:17,689 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) [2021-10-07 15:09:17,689 INFO L276 IsEmpty]: Start isEmpty. Operand 2952 states and 11432 transitions. [2021-10-07 15:09:17,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-07 15:09:17,694 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:17,695 INFO L512 BasicCegarLoop]: trace histogram [44, 1, 1, 1] [2021-10-07 15:09:17,727 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 [2021-10-07 15:09:17,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,54 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:17,910 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:09:17,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:17,911 INFO L82 PathProgramCache]: Analyzing trace with hash -639046868, now seen corresponding path program 44 times [2021-10-07 15:09:17,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:17,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312272451] [2021-10-07 15:09:17,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:17,911 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:17,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:18,785 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:18,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:18,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312272451] [2021-10-07 15:09:18,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312272451] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:18,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134737610] [2021-10-07 15:09:18,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:09:18,787 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:18,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:18,797 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) [2021-10-07 15:09:18,801 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 [2021-10-07 15:09:19,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:09:19,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:19,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-07 15:09:19,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:19,333 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:19,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134737610] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:19,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:19,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 46 [2021-10-07 15:09:19,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128696386] [2021-10-07 15:09:19,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-10-07 15:09:19,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:19,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-10-07 15:09:19,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-10-07 15:09:19,336 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) [2021-10-07 15:09:20,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:20,281 INFO L93 Difference]: Finished difference Result 6376 states and 24919 transitions. [2021-10-07 15:09:20,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-07 15:09:20,282 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 [2021-10-07 15:09:20,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:20,303 INFO L225 Difference]: With dead ends: 6376 [2021-10-07 15:09:20,303 INFO L226 Difference]: Without dead ends: 5476 [2021-10-07 15:09:20,304 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 773.8ms TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-10-07 15:09:20,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5476 states. [2021-10-07 15:09:20,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5476 to 3012. [2021-10-07 15:09:20,445 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) [2021-10-07 15:09:20,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3012 states to 3012 states and 11664 transitions. [2021-10-07 15:09:20,455 INFO L78 Accepts]: Start accepts. Automaton has 3012 states and 11664 transitions. Word has length 47 [2021-10-07 15:09:20,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:20,455 INFO L470 AbstractCegarLoop]: Abstraction has 3012 states and 11664 transitions. [2021-10-07 15:09:20,455 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) [2021-10-07 15:09:20,455 INFO L276 IsEmpty]: Start isEmpty. Operand 3012 states and 11664 transitions. [2021-10-07 15:09:20,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-10-07 15:09:20,461 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:20,461 INFO L512 BasicCegarLoop]: trace histogram [45, 1, 1, 1] [2021-10-07 15:09:20,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2021-10-07 15:09:20,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,55 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:20,673 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:09:20,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:20,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1664384033, now seen corresponding path program 45 times [2021-10-07 15:09:20,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:20,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487018369] [2021-10-07 15:09:20,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:20,675 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:21,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:21,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:21,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487018369] [2021-10-07 15:09:21,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487018369] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:21,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878067230] [2021-10-07 15:09:21,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:09:21,625 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:21,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:21,627 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) [2021-10-07 15:09:21,628 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 [2021-10-07 15:09:22,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2021-10-07 15:09:22,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:22,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-07 15:09:22,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:22,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:22,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878067230] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:22,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:22,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 47 [2021-10-07 15:09:22,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797388171] [2021-10-07 15:09:22,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-10-07 15:09:22,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:22,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-10-07 15:09:22,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-10-07 15:09:22,207 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) [2021-10-07 15:09:23,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:23,150 INFO L93 Difference]: Finished difference Result 6512 states and 25452 transitions. [2021-10-07 15:09:23,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-07 15:09:23,151 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 [2021-10-07 15:09:23,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:23,167 INFO L225 Difference]: With dead ends: 6512 [2021-10-07 15:09:23,167 INFO L226 Difference]: Without dead ends: 5592 [2021-10-07 15:09:23,168 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 840.1ms TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-10-07 15:09:23,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5592 states. [2021-10-07 15:09:23,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5592 to 3072. [2021-10-07 15:09:23,230 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) [2021-10-07 15:09:23,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3072 states to 3072 states and 11896 transitions. [2021-10-07 15:09:23,239 INFO L78 Accepts]: Start accepts. Automaton has 3072 states and 11896 transitions. Word has length 48 [2021-10-07 15:09:23,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:23,240 INFO L470 AbstractCegarLoop]: Abstraction has 3072 states and 11896 transitions. [2021-10-07 15:09:23,240 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) [2021-10-07 15:09:23,240 INFO L276 IsEmpty]: Start isEmpty. Operand 3072 states and 11896 transitions. [2021-10-07 15:09:23,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-07 15:09:23,246 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:23,246 INFO L512 BasicCegarLoop]: trace histogram [46, 1, 1, 1] [2021-10-07 15:09:23,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2021-10-07 15:09:23,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,56 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:23,447 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:09:23,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:23,447 INFO L82 PathProgramCache]: Analyzing trace with hash 56297932, now seen corresponding path program 46 times [2021-10-07 15:09:23,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:23,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617614386] [2021-10-07 15:09:23,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:23,449 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:23,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:24,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:24,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:24,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617614386] [2021-10-07 15:09:24,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617614386] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:24,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542735418] [2021-10-07 15:09:24,411 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:09:24,411 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:24,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:24,412 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) [2021-10-07 15:09:24,457 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 [2021-10-07 15:09:24,887 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:09:24,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:24,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 49 conjunts are in the unsatisfiable core [2021-10-07 15:09:24,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:25,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:25,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542735418] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:25,024 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:25,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 48 [2021-10-07 15:09:25,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736069828] [2021-10-07 15:09:25,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-10-07 15:09:25,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:25,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-10-07 15:09:25,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2021-10-07 15:09:25,026 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) [2021-10-07 15:09:26,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:26,026 INFO L93 Difference]: Finished difference Result 6648 states and 25985 transitions. [2021-10-07 15:09:26,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-07 15:09:26,026 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 [2021-10-07 15:09:26,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:26,043 INFO L225 Difference]: With dead ends: 6648 [2021-10-07 15:09:26,043 INFO L226 Difference]: Without dead ends: 5708 [2021-10-07 15:09:26,043 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 854.5ms TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2021-10-07 15:09:26,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5708 states. [2021-10-07 15:09:26,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5708 to 3132. [2021-10-07 15:09:26,109 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) [2021-10-07 15:09:26,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3132 states to 3132 states and 12128 transitions. [2021-10-07 15:09:26,119 INFO L78 Accepts]: Start accepts. Automaton has 3132 states and 12128 transitions. Word has length 49 [2021-10-07 15:09:26,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:26,120 INFO L470 AbstractCegarLoop]: Abstraction has 3132 states and 12128 transitions. [2021-10-07 15:09:26,120 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) [2021-10-07 15:09:26,120 INFO L276 IsEmpty]: Start isEmpty. Operand 3132 states and 12128 transitions. [2021-10-07 15:09:26,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-07 15:09:26,127 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:26,127 INFO L512 BasicCegarLoop]: trace histogram [47, 1, 1, 1] [2021-10-07 15:09:26,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2021-10-07 15:09:26,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,57 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:26,328 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:09:26,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:26,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1745236353, now seen corresponding path program 47 times [2021-10-07 15:09:26,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:26,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909718652] [2021-10-07 15:09:26,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:26,330 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:26,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:27,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:27,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:27,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909718652] [2021-10-07 15:09:27,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909718652] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:27,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796053727] [2021-10-07 15:09:27,361 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:09:27,361 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:27,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:27,362 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) [2021-10-07 15:09:27,364 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 [2021-10-07 15:09:27,828 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2021-10-07 15:09:27,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:27,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 50 conjunts are in the unsatisfiable core [2021-10-07 15:09:27,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:27,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:27,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796053727] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:27,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:27,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 49 [2021-10-07 15:09:27,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800274416] [2021-10-07 15:09:27,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-10-07 15:09:27,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:27,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-10-07 15:09:27,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-10-07 15:09:27,959 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) [2021-10-07 15:09:28,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:28,999 INFO L93 Difference]: Finished difference Result 6784 states and 26518 transitions. [2021-10-07 15:09:29,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-07 15:09:29,000 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 [2021-10-07 15:09:29,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:29,018 INFO L225 Difference]: With dead ends: 6784 [2021-10-07 15:09:29,018 INFO L226 Difference]: Without dead ends: 5824 [2021-10-07 15:09:29,019 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 926.3ms TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-10-07 15:09:29,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5824 states. [2021-10-07 15:09:29,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5824 to 3192. [2021-10-07 15:09:29,087 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) [2021-10-07 15:09:29,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3192 states to 3192 states and 12360 transitions. [2021-10-07 15:09:29,098 INFO L78 Accepts]: Start accepts. Automaton has 3192 states and 12360 transitions. Word has length 50 [2021-10-07 15:09:29,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:29,098 INFO L470 AbstractCegarLoop]: Abstraction has 3192 states and 12360 transitions. [2021-10-07 15:09:29,098 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) [2021-10-07 15:09:29,099 INFO L276 IsEmpty]: Start isEmpty. Operand 3192 states and 12360 transitions. [2021-10-07 15:09:29,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-07 15:09:29,105 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:29,105 INFO L512 BasicCegarLoop]: trace histogram [48, 1, 1, 1] [2021-10-07 15:09:29,130 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 [2021-10-07 15:09:29,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,58 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:29,306 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:09:29,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:29,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1732247444, now seen corresponding path program 48 times [2021-10-07 15:09:29,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:29,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504006976] [2021-10-07 15:09:29,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:29,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:29,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:30,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:30,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:30,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504006976] [2021-10-07 15:09:30,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504006976] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:30,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013488953] [2021-10-07 15:09:30,405 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:09:30,405 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:30,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:30,406 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) [2021-10-07 15:09:30,408 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 [2021-10-07 15:09:30,894 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-10-07 15:09:30,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:30,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 51 conjunts are in the unsatisfiable core [2021-10-07 15:09:30,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:31,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:31,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013488953] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:31,031 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:31,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 50 [2021-10-07 15:09:31,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834282198] [2021-10-07 15:09:31,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-10-07 15:09:31,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:31,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-10-07 15:09:31,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-10-07 15:09:31,033 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) [2021-10-07 15:09:32,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:32,149 INFO L93 Difference]: Finished difference Result 6920 states and 27051 transitions. [2021-10-07 15:09:32,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-07 15:09:32,150 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 [2021-10-07 15:09:32,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:32,167 INFO L225 Difference]: With dead ends: 6920 [2021-10-07 15:09:32,167 INFO L226 Difference]: Without dead ends: 5940 [2021-10-07 15:09:32,168 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 982.9ms TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-10-07 15:09:32,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5940 states. [2021-10-07 15:09:32,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5940 to 3252. [2021-10-07 15:09:32,233 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) [2021-10-07 15:09:32,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3252 states to 3252 states and 12592 transitions. [2021-10-07 15:09:32,243 INFO L78 Accepts]: Start accepts. Automaton has 3252 states and 12592 transitions. Word has length 51 [2021-10-07 15:09:32,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:32,243 INFO L470 AbstractCegarLoop]: Abstraction has 3252 states and 12592 transitions. [2021-10-07 15:09:32,243 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) [2021-10-07 15:09:32,243 INFO L276 IsEmpty]: Start isEmpty. Operand 3252 states and 12592 transitions. [2021-10-07 15:09:32,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-07 15:09:32,250 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:32,250 INFO L512 BasicCegarLoop]: trace histogram [49, 1, 1, 1] [2021-10-07 15:09:32,274 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 [2021-10-07 15:09:32,450 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,SelfDestructingSolverStorable65 [2021-10-07 15:09:32,451 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:09:32,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:32,452 INFO L82 PathProgramCache]: Analyzing trace with hash 2134904545, now seen corresponding path program 49 times [2021-10-07 15:09:32,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:32,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169652213] [2021-10-07 15:09:32,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:32,453 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:32,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:33,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:33,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:33,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169652213] [2021-10-07 15:09:33,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169652213] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:33,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113643479] [2021-10-07 15:09:33,581 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:09:33,581 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:33,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:33,583 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) [2021-10-07 15:09:33,586 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 [2021-10-07 15:09:34,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:34,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 52 conjunts are in the unsatisfiable core [2021-10-07 15:09:34,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:34,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:34,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113643479] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:34,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:34,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 51 [2021-10-07 15:09:34,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46240049] [2021-10-07 15:09:34,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-10-07 15:09:34,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:34,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-10-07 15:09:34,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2021-10-07 15:09:34,192 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) [2021-10-07 15:09:35,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:35,338 INFO L93 Difference]: Finished difference Result 7056 states and 27584 transitions. [2021-10-07 15:09:35,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-07 15:09:35,338 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 [2021-10-07 15:09:35,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:35,356 INFO L225 Difference]: With dead ends: 7056 [2021-10-07 15:09:35,356 INFO L226 Difference]: Without dead ends: 6056 [2021-10-07 15:09:35,356 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1015.4ms TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2021-10-07 15:09:35,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6056 states. [2021-10-07 15:09:35,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6056 to 3312. [2021-10-07 15:09:35,424 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) [2021-10-07 15:09:35,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3312 states to 3312 states and 12824 transitions. [2021-10-07 15:09:35,434 INFO L78 Accepts]: Start accepts. Automaton has 3312 states and 12824 transitions. Word has length 52 [2021-10-07 15:09:35,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:35,434 INFO L470 AbstractCegarLoop]: Abstraction has 3312 states and 12824 transitions. [2021-10-07 15:09:35,434 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) [2021-10-07 15:09:35,434 INFO L276 IsEmpty]: Start isEmpty. Operand 3312 states and 12824 transitions. [2021-10-07 15:09:35,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-07 15:09:35,441 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:35,441 INFO L512 BasicCegarLoop]: trace histogram [50, 1, 1, 1] [2021-10-07 15:09:35,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2021-10-07 15:09:35,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,60 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:35,643 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:09:35,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:35,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1757531916, now seen corresponding path program 50 times [2021-10-07 15:09:35,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:35,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466215746] [2021-10-07 15:09:35,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:35,645 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:35,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:36,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:36,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:36,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466215746] [2021-10-07 15:09:36,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466215746] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:36,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783131286] [2021-10-07 15:09:36,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:09:36,802 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:36,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:36,805 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) [2021-10-07 15:09:36,805 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 [2021-10-07 15:09:37,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:09:37,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:37,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-07 15:09:37,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:37,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:37,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783131286] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:37,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:37,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 52 [2021-10-07 15:09:37,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109690038] [2021-10-07 15:09:37,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-10-07 15:09:37,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:37,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-10-07 15:09:37,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2021-10-07 15:09:37,440 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) [2021-10-07 15:09:38,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:38,605 INFO L93 Difference]: Finished difference Result 7192 states and 28117 transitions. [2021-10-07 15:09:38,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-07 15:09:38,605 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 [2021-10-07 15:09:38,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:38,626 INFO L225 Difference]: With dead ends: 7192 [2021-10-07 15:09:38,626 INFO L226 Difference]: Without dead ends: 6172 [2021-10-07 15:09:38,627 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1044.5ms TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2021-10-07 15:09:38,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6172 states. [2021-10-07 15:09:38,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6172 to 3372. [2021-10-07 15:09:38,698 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) [2021-10-07 15:09:38,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3372 states to 3372 states and 13056 transitions. [2021-10-07 15:09:38,709 INFO L78 Accepts]: Start accepts. Automaton has 3372 states and 13056 transitions. Word has length 53 [2021-10-07 15:09:38,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:38,709 INFO L470 AbstractCegarLoop]: Abstraction has 3372 states and 13056 transitions. [2021-10-07 15:09:38,710 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) [2021-10-07 15:09:38,710 INFO L276 IsEmpty]: Start isEmpty. Operand 3372 states and 13056 transitions. [2021-10-07 15:09:38,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-07 15:09:38,715 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:38,715 INFO L512 BasicCegarLoop]: trace histogram [51, 1, 1, 1] [2021-10-07 15:09:38,740 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 [2021-10-07 15:09:38,916 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,SelfDestructingSolverStorable67 [2021-10-07 15:09:38,916 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:09:38,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:38,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1351084991, now seen corresponding path program 51 times [2021-10-07 15:09:38,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:38,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794683196] [2021-10-07 15:09:38,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:38,918 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:38,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:40,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:40,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:40,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794683196] [2021-10-07 15:09:40,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794683196] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:40,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719216952] [2021-10-07 15:09:40,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:09:40,102 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:40,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:40,102 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) [2021-10-07 15:09:40,103 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 [2021-10-07 15:09:40,648 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2021-10-07 15:09:40,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:40,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 54 conjunts are in the unsatisfiable core [2021-10-07 15:09:40,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:40,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:40,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719216952] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:40,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:40,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 53 [2021-10-07 15:09:40,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173073454] [2021-10-07 15:09:40,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-10-07 15:09:40,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:40,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-10-07 15:09:40,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2021-10-07 15:09:40,801 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) [2021-10-07 15:09:42,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:42,227 INFO L93 Difference]: Finished difference Result 7328 states and 28650 transitions. [2021-10-07 15:09:42,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-07 15:09:42,227 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 [2021-10-07 15:09:42,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:42,246 INFO L225 Difference]: With dead ends: 7328 [2021-10-07 15:09:42,246 INFO L226 Difference]: Without dead ends: 6288 [2021-10-07 15:09:42,246 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1065.6ms TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2021-10-07 15:09:42,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6288 states. [2021-10-07 15:09:42,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6288 to 3432. [2021-10-07 15:09:42,315 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) [2021-10-07 15:09:42,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3432 states to 3432 states and 13288 transitions. [2021-10-07 15:09:42,325 INFO L78 Accepts]: Start accepts. Automaton has 3432 states and 13288 transitions. Word has length 54 [2021-10-07 15:09:42,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:42,326 INFO L470 AbstractCegarLoop]: Abstraction has 3432 states and 13288 transitions. [2021-10-07 15:09:42,326 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) [2021-10-07 15:09:42,326 INFO L276 IsEmpty]: Start isEmpty. Operand 3432 states and 13288 transitions. [2021-10-07 15:09:42,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-07 15:09:42,331 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:42,331 INFO L512 BasicCegarLoop]: trace histogram [52, 1, 1, 1] [2021-10-07 15:09:42,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2021-10-07 15:09:42,532 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,SelfDestructingSolverStorable68 [2021-10-07 15:09:42,532 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:09:42,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:42,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1066038700, now seen corresponding path program 52 times [2021-10-07 15:09:42,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:42,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667577328] [2021-10-07 15:09:42,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:42,534 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:42,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:43,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:43,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:43,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667577328] [2021-10-07 15:09:43,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667577328] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:43,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244787316] [2021-10-07 15:09:43,777 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:09:43,777 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:43,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:43,779 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) [2021-10-07 15:09:43,780 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 [2021-10-07 15:09:44,304 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:09:44,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:44,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 55 conjunts are in the unsatisfiable core [2021-10-07 15:09:44,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:44,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:44,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244787316] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:44,444 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:44,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 54 [2021-10-07 15:09:44,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023382577] [2021-10-07 15:09:44,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-10-07 15:09:44,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:44,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-10-07 15:09:44,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2021-10-07 15:09:44,446 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) [2021-10-07 15:09:45,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:45,742 INFO L93 Difference]: Finished difference Result 7464 states and 29183 transitions. [2021-10-07 15:09:45,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-10-07 15:09:45,743 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 [2021-10-07 15:09:45,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:45,762 INFO L225 Difference]: With dead ends: 7464 [2021-10-07 15:09:45,762 INFO L226 Difference]: Without dead ends: 6404 [2021-10-07 15:09:45,762 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1125.9ms TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2021-10-07 15:09:45,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6404 states. [2021-10-07 15:09:45,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6404 to 3492. [2021-10-07 15:09:45,833 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) [2021-10-07 15:09:45,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3492 states to 3492 states and 13520 transitions. [2021-10-07 15:09:45,844 INFO L78 Accepts]: Start accepts. Automaton has 3492 states and 13520 transitions. Word has length 55 [2021-10-07 15:09:45,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:45,844 INFO L470 AbstractCegarLoop]: Abstraction has 3492 states and 13520 transitions. [2021-10-07 15:09:45,844 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) [2021-10-07 15:09:45,844 INFO L276 IsEmpty]: Start isEmpty. Operand 3492 states and 13520 transitions. [2021-10-07 15:09:45,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-07 15:09:45,849 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:45,849 INFO L512 BasicCegarLoop]: trace histogram [53, 1, 1, 1] [2021-10-07 15:09:45,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2021-10-07 15:09:46,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-10-07 15:09:46,050 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:09:46,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:46,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1312538207, now seen corresponding path program 53 times [2021-10-07 15:09:46,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:46,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370801100] [2021-10-07 15:09:46,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:46,052 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:47,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:47,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:47,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370801100] [2021-10-07 15:09:47,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370801100] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:47,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870300468] [2021-10-07 15:09:47,333 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:09:47,333 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:47,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:47,334 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) [2021-10-07 15:09:47,335 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 [2021-10-07 15:09:47,901 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2021-10-07 15:09:47,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:47,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 56 conjunts are in the unsatisfiable core [2021-10-07 15:09:47,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:48,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:48,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870300468] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:48,057 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:48,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 55 [2021-10-07 15:09:48,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901076792] [2021-10-07 15:09:48,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2021-10-07 15:09:48,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:48,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-10-07 15:09:48,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2021-10-07 15:09:48,060 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) [2021-10-07 15:09:49,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:49,425 INFO L93 Difference]: Finished difference Result 7600 states and 29716 transitions. [2021-10-07 15:09:49,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-07 15:09:49,426 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 [2021-10-07 15:09:49,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:49,447 INFO L225 Difference]: With dead ends: 7600 [2021-10-07 15:09:49,447 INFO L226 Difference]: Without dead ends: 6520 [2021-10-07 15:09:49,448 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1164.1ms TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2021-10-07 15:09:49,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6520 states. [2021-10-07 15:09:49,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6520 to 3552. [2021-10-07 15:09:49,528 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) [2021-10-07 15:09:49,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3552 states to 3552 states and 13752 transitions. [2021-10-07 15:09:49,539 INFO L78 Accepts]: Start accepts. Automaton has 3552 states and 13752 transitions. Word has length 56 [2021-10-07 15:09:49,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:49,540 INFO L470 AbstractCegarLoop]: Abstraction has 3552 states and 13752 transitions. [2021-10-07 15:09:49,540 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) [2021-10-07 15:09:49,540 INFO L276 IsEmpty]: Start isEmpty. Operand 3552 states and 13752 transitions. [2021-10-07 15:09:49,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-07 15:09:49,547 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:49,547 INFO L512 BasicCegarLoop]: trace histogram [54, 1, 1, 1] [2021-10-07 15:09:49,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2021-10-07 15:09:49,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,64 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:49,748 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:09:49,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:49,749 INFO L82 PathProgramCache]: Analyzing trace with hash -2033978292, now seen corresponding path program 54 times [2021-10-07 15:09:49,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:49,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463134018] [2021-10-07 15:09:49,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:49,750 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:49,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:51,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:51,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:51,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463134018] [2021-10-07 15:09:51,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463134018] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:51,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297417239] [2021-10-07 15:09:51,072 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:09:51,072 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:51,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:51,073 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) [2021-10-07 15:09:51,074 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 [2021-10-07 15:09:51,666 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2021-10-07 15:09:51,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:51,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 57 conjunts are in the unsatisfiable core [2021-10-07 15:09:51,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:51,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:51,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297417239] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:51,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:51,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 56 [2021-10-07 15:09:51,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784418678] [2021-10-07 15:09:51,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-10-07 15:09:51,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:51,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-10-07 15:09:51,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2021-10-07 15:09:51,818 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) [2021-10-07 15:09:53,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:53,416 INFO L93 Difference]: Finished difference Result 7736 states and 30249 transitions. [2021-10-07 15:09:53,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-10-07 15:09:53,416 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 [2021-10-07 15:09:53,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:53,436 INFO L225 Difference]: With dead ends: 7736 [2021-10-07 15:09:53,436 INFO L226 Difference]: Without dead ends: 6636 [2021-10-07 15:09:53,437 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1208.6ms TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2021-10-07 15:09:53,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6636 states. [2021-10-07 15:09:53,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6636 to 3612. [2021-10-07 15:09:53,511 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) [2021-10-07 15:09:53,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3612 states to 3612 states and 13984 transitions. [2021-10-07 15:09:53,522 INFO L78 Accepts]: Start accepts. Automaton has 3612 states and 13984 transitions. Word has length 57 [2021-10-07 15:09:53,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:53,522 INFO L470 AbstractCegarLoop]: Abstraction has 3612 states and 13984 transitions. [2021-10-07 15:09:53,522 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) [2021-10-07 15:09:53,522 INFO L276 IsEmpty]: Start isEmpty. Operand 3612 states and 13984 transitions. [2021-10-07 15:09:53,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-07 15:09:53,528 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:53,528 INFO L512 BasicCegarLoop]: trace histogram [55, 1, 1, 1] [2021-10-07 15:09:53,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2021-10-07 15:09:53,728 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,SelfDestructingSolverStorable71 [2021-10-07 15:09:53,729 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:09:53,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:53,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1371182849, now seen corresponding path program 55 times [2021-10-07 15:09:53,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:53,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244789084] [2021-10-07 15:09:53,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:53,731 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:55,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:55,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:55,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244789084] [2021-10-07 15:09:55,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244789084] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:55,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022848782] [2021-10-07 15:09:55,098 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:09:55,098 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:55,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:55,102 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) [2021-10-07 15:09:55,120 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 [2021-10-07 15:09:55,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:55,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 58 conjunts are in the unsatisfiable core [2021-10-07 15:09:55,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:55,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:55,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022848782] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:55,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:55,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 57 [2021-10-07 15:09:55,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044340831] [2021-10-07 15:09:55,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2021-10-07 15:09:55,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:55,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-10-07 15:09:55,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2021-10-07 15:09:55,800 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) [2021-10-07 15:09:57,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:57,369 INFO L93 Difference]: Finished difference Result 7872 states and 30782 transitions. [2021-10-07 15:09:57,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-10-07 15:09:57,369 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 [2021-10-07 15:09:57,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:57,389 INFO L225 Difference]: With dead ends: 7872 [2021-10-07 15:09:57,389 INFO L226 Difference]: Without dead ends: 6752 [2021-10-07 15:09:57,390 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1252.4ms TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2021-10-07 15:09:57,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6752 states. [2021-10-07 15:09:57,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6752 to 3672. [2021-10-07 15:09:57,463 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) [2021-10-07 15:09:57,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3672 states to 3672 states and 14216 transitions. [2021-10-07 15:09:57,474 INFO L78 Accepts]: Start accepts. Automaton has 3672 states and 14216 transitions. Word has length 58 [2021-10-07 15:09:57,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:57,475 INFO L470 AbstractCegarLoop]: Abstraction has 3672 states and 14216 transitions. [2021-10-07 15:09:57,475 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) [2021-10-07 15:09:57,475 INFO L276 IsEmpty]: Start isEmpty. Operand 3672 states and 14216 transitions. [2021-10-07 15:09:57,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-10-07 15:09:57,481 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:57,481 INFO L512 BasicCegarLoop]: trace histogram [56, 1, 1, 1] [2021-10-07 15:09:57,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2021-10-07 15:09:57,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,66 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:57,682 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:09:57,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:57,682 INFO L82 PathProgramCache]: Analyzing trace with hash -443004180, now seen corresponding path program 56 times [2021-10-07 15:09:57,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:57,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283302138] [2021-10-07 15:09:57,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:57,683 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:57,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:59,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:59,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:59,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283302138] [2021-10-07 15:09:59,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283302138] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:59,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077105644] [2021-10-07 15:09:59,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:09:59,111 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:59,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:59,112 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) [2021-10-07 15:09:59,113 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 [2021-10-07 15:09:59,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:09:59,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:59,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 59 conjunts are in the unsatisfiable core [2021-10-07 15:09:59,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:59,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:59,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077105644] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:59,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:59,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 58 [2021-10-07 15:09:59,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183865605] [2021-10-07 15:09:59,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2021-10-07 15:09:59,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:59,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-10-07 15:09:59,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2021-10-07 15:09:59,882 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) [2021-10-07 15:10:01,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:10:01,451 INFO L93 Difference]: Finished difference Result 8008 states and 31315 transitions. [2021-10-07 15:10:01,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-10-07 15:10:01,451 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 [2021-10-07 15:10:01,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:10:01,472 INFO L225 Difference]: With dead ends: 8008 [2021-10-07 15:10:01,472 INFO L226 Difference]: Without dead ends: 6868 [2021-10-07 15:10:01,473 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1305.2ms TimeCoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2021-10-07 15:10:01,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6868 states. [2021-10-07 15:10:01,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6868 to 3732. [2021-10-07 15:10:01,550 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) [2021-10-07 15:10:01,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3732 states to 3732 states and 14448 transitions. [2021-10-07 15:10:01,561 INFO L78 Accepts]: Start accepts. Automaton has 3732 states and 14448 transitions. Word has length 59 [2021-10-07 15:10:01,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:10:01,562 INFO L470 AbstractCegarLoop]: Abstraction has 3732 states and 14448 transitions. [2021-10-07 15:10:01,562 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) [2021-10-07 15:10:01,562 INFO L276 IsEmpty]: Start isEmpty. Operand 3732 states and 14448 transitions. [2021-10-07 15:10:01,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-07 15:10:01,568 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:10:01,568 INFO L512 BasicCegarLoop]: trace histogram [57, 1, 1, 1] [2021-10-07 15:10:01,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2021-10-07 15:10:01,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,67 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:01,769 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:10:01,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:10:01,769 INFO L82 PathProgramCache]: Analyzing trace with hash -848227231, now seen corresponding path program 57 times [2021-10-07 15:10:01,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:10:01,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113148024] [2021-10-07 15:10:01,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:01,770 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:10:01,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:03,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:10:03,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:10:03,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113148024] [2021-10-07 15:10:03,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113148024] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:03,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155969746] [2021-10-07 15:10:03,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:10:03,331 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:03,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:10:03,336 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) [2021-10-07 15:10:03,339 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 [2021-10-07 15:10:04,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2021-10-07 15:10:04,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:10:04,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 60 conjunts are in the unsatisfiable core [2021-10-07 15:10:04,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:10:04,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:10:04,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155969746] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:04,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:10:04,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 59 [2021-10-07 15:10:04,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944338328] [2021-10-07 15:10:04,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2021-10-07 15:10:04,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:10:04,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-10-07 15:10:04,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2021-10-07 15:10:04,176 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) [2021-10-07 15:10:06,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:10:06,214 INFO L93 Difference]: Finished difference Result 8144 states and 31848 transitions. [2021-10-07 15:10:06,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-10-07 15:10:06,215 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 [2021-10-07 15:10:06,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:10:06,236 INFO L225 Difference]: With dead ends: 8144 [2021-10-07 15:10:06,236 INFO L226 Difference]: Without dead ends: 6984 [2021-10-07 15:10:06,236 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1397.2ms TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2021-10-07 15:10:06,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6984 states. [2021-10-07 15:10:06,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6984 to 3792. [2021-10-07 15:10:06,319 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) [2021-10-07 15:10:06,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3792 states to 3792 states and 14680 transitions. [2021-10-07 15:10:06,331 INFO L78 Accepts]: Start accepts. Automaton has 3792 states and 14680 transitions. Word has length 60 [2021-10-07 15:10:06,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:10:06,331 INFO L470 AbstractCegarLoop]: Abstraction has 3792 states and 14680 transitions. [2021-10-07 15:10:06,331 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) [2021-10-07 15:10:06,331 INFO L276 IsEmpty]: Start isEmpty. Operand 3792 states and 14680 transitions. [2021-10-07 15:10:06,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-10-07 15:10:06,337 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:10:06,338 INFO L512 BasicCegarLoop]: trace histogram [58, 1, 1, 1] [2021-10-07 15:10:06,363 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 [2021-10-07 15:10:06,538 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,SelfDestructingSolverStorable74 [2021-10-07 15:10:06,539 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:10:06,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:10:06,539 INFO L82 PathProgramCache]: Analyzing trace with hash -525239924, now seen corresponding path program 58 times [2021-10-07 15:10:06,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:10:06,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077158604] [2021-10-07 15:10:06,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:06,540 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:10:06,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:08,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:10:08,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:10:08,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077158604] [2021-10-07 15:10:08,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077158604] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:08,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103674885] [2021-10-07 15:10:08,096 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:10:08,096 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:08,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:10:08,097 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) [2021-10-07 15:10:08,098 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 [2021-10-07 15:10:08,733 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:10:08,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:10:08,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 61 conjunts are in the unsatisfiable core [2021-10-07 15:10:08,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:10:08,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:10:08,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103674885] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:08,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:10:08,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 60 [2021-10-07 15:10:08,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135161794] [2021-10-07 15:10:08,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2021-10-07 15:10:08,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:10:08,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-10-07 15:10:08,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2021-10-07 15:10:08,880 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) [2021-10-07 15:10:10,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:10:10,682 INFO L93 Difference]: Finished difference Result 8280 states and 32381 transitions. [2021-10-07 15:10:10,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-10-07 15:10:10,682 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 [2021-10-07 15:10:10,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:10:10,704 INFO L225 Difference]: With dead ends: 8280 [2021-10-07 15:10:10,705 INFO L226 Difference]: Without dead ends: 7100 [2021-10-07 15:10:10,705 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1381.0ms TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2021-10-07 15:10:10,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7100 states. [2021-10-07 15:10:10,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7100 to 3852. [2021-10-07 15:10:10,786 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) [2021-10-07 15:10:10,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3852 states to 3852 states and 14912 transitions. [2021-10-07 15:10:10,798 INFO L78 Accepts]: Start accepts. Automaton has 3852 states and 14912 transitions. Word has length 61 [2021-10-07 15:10:10,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:10:10,799 INFO L470 AbstractCegarLoop]: Abstraction has 3852 states and 14912 transitions. [2021-10-07 15:10:10,799 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) [2021-10-07 15:10:10,799 INFO L276 IsEmpty]: Start isEmpty. Operand 3852 states and 14912 transitions. [2021-10-07 15:10:10,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-07 15:10:10,805 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:10:10,805 INFO L512 BasicCegarLoop]: trace histogram [59, 1, 1, 1] [2021-10-07 15:10:10,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2021-10-07 15:10:11,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,69 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:11,006 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:10:11,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:10:11,007 INFO L82 PathProgramCache]: Analyzing trace with hash 897432001, now seen corresponding path program 59 times [2021-10-07 15:10:11,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:10:11,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765041034] [2021-10-07 15:10:11,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:11,008 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:10:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:12,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:10:12,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:10:12,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765041034] [2021-10-07 15:10:12,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765041034] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:12,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610666270] [2021-10-07 15:10:12,627 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:10:12,627 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:12,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:10:12,629 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) [2021-10-07 15:10:12,630 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 [2021-10-07 15:10:13,303 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2021-10-07 15:10:13,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:10:13,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 62 conjunts are in the unsatisfiable core [2021-10-07 15:10:13,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:10:13,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:10:13,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610666270] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:13,459 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:10:13,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 61 [2021-10-07 15:10:13,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321616214] [2021-10-07 15:10:13,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2021-10-07 15:10:13,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:10:13,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-10-07 15:10:13,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2021-10-07 15:10:13,461 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) [2021-10-07 15:10:15,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:10:15,282 INFO L93 Difference]: Finished difference Result 8416 states and 32914 transitions. [2021-10-07 15:10:15,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-10-07 15:10:15,283 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 [2021-10-07 15:10:15,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:10:15,307 INFO L225 Difference]: With dead ends: 8416 [2021-10-07 15:10:15,308 INFO L226 Difference]: Without dead ends: 7216 [2021-10-07 15:10:15,308 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1457.4ms TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2021-10-07 15:10:15,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7216 states. [2021-10-07 15:10:15,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7216 to 3912. [2021-10-07 15:10:15,392 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) [2021-10-07 15:10:15,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3912 states to 3912 states and 15144 transitions. [2021-10-07 15:10:15,404 INFO L78 Accepts]: Start accepts. Automaton has 3912 states and 15144 transitions. Word has length 62 [2021-10-07 15:10:15,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:10:15,405 INFO L470 AbstractCegarLoop]: Abstraction has 3912 states and 15144 transitions. [2021-10-07 15:10:15,405 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) [2021-10-07 15:10:15,405 INFO L276 IsEmpty]: Start isEmpty. Operand 3912 states and 15144 transitions. [2021-10-07 15:10:15,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-07 15:10:15,411 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:10:15,411 INFO L512 BasicCegarLoop]: trace histogram [60, 1, 1, 1] [2021-10-07 15:10:15,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2021-10-07 15:10:15,612 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,SelfDestructingSolverStorable76 [2021-10-07 15:10:15,612 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:10:15,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:10:15,613 INFO L82 PathProgramCache]: Analyzing trace with hash 2050588716, now seen corresponding path program 60 times [2021-10-07 15:10:15,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:10:15,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825904264] [2021-10-07 15:10:15,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:15,614 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:10:15,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:17,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:10:17,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:10:17,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825904264] [2021-10-07 15:10:17,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825904264] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:17,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269590622] [2021-10-07 15:10:17,259 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:10:17,259 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:17,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:10:17,260 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) [2021-10-07 15:10:17,262 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 [2021-10-07 15:10:17,978 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-10-07 15:10:17,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:10:17,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 63 conjunts are in the unsatisfiable core [2021-10-07 15:10:17,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:10:18,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:10:18,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269590622] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:18,141 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:10:18,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 62 [2021-10-07 15:10:18,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381138898] [2021-10-07 15:10:18,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-10-07 15:10:18,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:10:18,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-10-07 15:10:18,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2021-10-07 15:10:18,144 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) [2021-10-07 15:10:20,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:10:20,241 INFO L93 Difference]: Finished difference Result 8552 states and 33447 transitions. [2021-10-07 15:10:20,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-10-07 15:10:20,241 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 [2021-10-07 15:10:20,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:10:20,263 INFO L225 Difference]: With dead ends: 8552 [2021-10-07 15:10:20,263 INFO L226 Difference]: Without dead ends: 7332 [2021-10-07 15:10:20,264 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1503.4ms TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2021-10-07 15:10:20,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7332 states. [2021-10-07 15:10:20,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7332 to 3972. [2021-10-07 15:10:20,345 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) [2021-10-07 15:10:20,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3972 states to 3972 states and 15376 transitions. [2021-10-07 15:10:20,357 INFO L78 Accepts]: Start accepts. Automaton has 3972 states and 15376 transitions. Word has length 63 [2021-10-07 15:10:20,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:10:20,357 INFO L470 AbstractCegarLoop]: Abstraction has 3972 states and 15376 transitions. [2021-10-07 15:10:20,357 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) [2021-10-07 15:10:20,357 INFO L276 IsEmpty]: Start isEmpty. Operand 3972 states and 15376 transitions. [2021-10-07 15:10:20,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-10-07 15:10:20,364 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:10:20,364 INFO L512 BasicCegarLoop]: trace histogram [61, 1, 1, 1] [2021-10-07 15:10:20,390 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2021-10-07 15:10:20,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,71 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:20,565 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:10:20,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:10:20,565 INFO L82 PathProgramCache]: Analyzing trace with hash -856258783, now seen corresponding path program 61 times [2021-10-07 15:10:20,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:10:20,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278275195] [2021-10-07 15:10:20,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:20,567 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:10:20,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:22,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:10:22,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:10:22,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278275195] [2021-10-07 15:10:22,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278275195] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:22,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464464462] [2021-10-07 15:10:22,244 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:10:22,244 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:22,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:10:22,245 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) [2021-10-07 15:10:22,246 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 [2021-10-07 15:10:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:22,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 64 conjunts are in the unsatisfiable core [2021-10-07 15:10:22,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:10:23,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:10:23,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464464462] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:23,097 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:10:23,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 63 [2021-10-07 15:10:23,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634783420] [2021-10-07 15:10:23,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2021-10-07 15:10:23,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:10:23,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-10-07 15:10:23,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2021-10-07 15:10:23,099 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) [2021-10-07 15:10:25,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:10:25,006 INFO L93 Difference]: Finished difference Result 8688 states and 33980 transitions. [2021-10-07 15:10:25,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-10-07 15:10:25,006 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 [2021-10-07 15:10:25,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:10:25,030 INFO L225 Difference]: With dead ends: 8688 [2021-10-07 15:10:25,030 INFO L226 Difference]: Without dead ends: 7448 [2021-10-07 15:10:25,031 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1549.4ms TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2021-10-07 15:10:25,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7448 states. [2021-10-07 15:10:25,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7448 to 4032. [2021-10-07 15:10:25,120 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) [2021-10-07 15:10:25,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4032 states to 4032 states and 15608 transitions. [2021-10-07 15:10:25,133 INFO L78 Accepts]: Start accepts. Automaton has 4032 states and 15608 transitions. Word has length 64 [2021-10-07 15:10:25,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:10:25,133 INFO L470 AbstractCegarLoop]: Abstraction has 4032 states and 15608 transitions. [2021-10-07 15:10:25,134 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) [2021-10-07 15:10:25,134 INFO L276 IsEmpty]: Start isEmpty. Operand 4032 states and 15608 transitions. [2021-10-07 15:10:25,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-07 15:10:25,140 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:10:25,141 INFO L512 BasicCegarLoop]: trace histogram [62, 1, 1, 1] [2021-10-07 15:10:25,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2021-10-07 15:10:25,341 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,SelfDestructingSolverStorable78 [2021-10-07 15:10:25,342 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:10:25,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:10:25,342 INFO L82 PathProgramCache]: Analyzing trace with hash -774218036, now seen corresponding path program 62 times [2021-10-07 15:10:25,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:10:25,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283016764] [2021-10-07 15:10:25,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:25,343 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:10:25,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:27,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:10:27,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:10:27,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283016764] [2021-10-07 15:10:27,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283016764] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:27,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393017898] [2021-10-07 15:10:27,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:10:27,124 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:27,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:10:27,125 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) [2021-10-07 15:10:27,126 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 [2021-10-07 15:10:27,835 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:10:27,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:10:27,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 65 conjunts are in the unsatisfiable core [2021-10-07 15:10:27,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:10:27,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:10:27,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393017898] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:27,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:10:27,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 64 [2021-10-07 15:10:27,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986024269] [2021-10-07 15:10:27,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-10-07 15:10:27,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:10:27,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-10-07 15:10:27,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2021-10-07 15:10:27,997 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) [2021-10-07 15:10:30,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:10:30,144 INFO L93 Difference]: Finished difference Result 8824 states and 34513 transitions. [2021-10-07 15:10:30,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-10-07 15:10:30,144 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 [2021-10-07 15:10:30,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:10:30,167 INFO L225 Difference]: With dead ends: 8824 [2021-10-07 15:10:30,168 INFO L226 Difference]: Without dead ends: 7564 [2021-10-07 15:10:30,168 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1638.2ms TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2021-10-07 15:10:30,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7564 states. [2021-10-07 15:10:30,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7564 to 4092. [2021-10-07 15:10:30,253 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) [2021-10-07 15:10:30,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4092 states to 4092 states and 15840 transitions. [2021-10-07 15:10:30,266 INFO L78 Accepts]: Start accepts. Automaton has 4092 states and 15840 transitions. Word has length 65 [2021-10-07 15:10:30,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:10:30,266 INFO L470 AbstractCegarLoop]: Abstraction has 4092 states and 15840 transitions. [2021-10-07 15:10:30,266 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) [2021-10-07 15:10:30,266 INFO L276 IsEmpty]: Start isEmpty. Operand 4092 states and 15840 transitions. [2021-10-07 15:10:30,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-10-07 15:10:30,275 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:10:30,276 INFO L512 BasicCegarLoop]: trace histogram [63, 1, 1, 1] [2021-10-07 15:10:30,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2021-10-07 15:10:30,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-10-07 15:10:30,490 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:10:30,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:10:30,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1769045121, now seen corresponding path program 63 times [2021-10-07 15:10:30,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:10:30,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488388396] [2021-10-07 15:10:30,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:30,492 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:10:30,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:32,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:10:32,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:10:32,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488388396] [2021-10-07 15:10:32,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488388396] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:32,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600560340] [2021-10-07 15:10:32,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:10:32,274 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:32,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:10:32,276 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) [2021-10-07 15:10:32,277 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 [2021-10-07 15:10:33,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2021-10-07 15:10:33,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:10:33,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 66 conjunts are in the unsatisfiable core [2021-10-07 15:10:33,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:10:33,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:10:33,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600560340] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:33,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:10:33,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 65 [2021-10-07 15:10:33,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655362100] [2021-10-07 15:10:33,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2021-10-07 15:10:33,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:10:33,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-10-07 15:10:33,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2021-10-07 15:10:33,290 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) [2021-10-07 15:10:35,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:10:35,419 INFO L93 Difference]: Finished difference Result 8960 states and 35046 transitions. [2021-10-07 15:10:35,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-10-07 15:10:35,420 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 [2021-10-07 15:10:35,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:10:35,443 INFO L225 Difference]: With dead ends: 8960 [2021-10-07 15:10:35,443 INFO L226 Difference]: Without dead ends: 7680 [2021-10-07 15:10:35,443 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1648.2ms TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2021-10-07 15:10:35,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7680 states. [2021-10-07 15:10:35,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7680 to 4152. [2021-10-07 15:10:35,536 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) [2021-10-07 15:10:35,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4152 states to 4152 states and 16072 transitions. [2021-10-07 15:10:35,561 INFO L78 Accepts]: Start accepts. Automaton has 4152 states and 16072 transitions. Word has length 66 [2021-10-07 15:10:35,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:10:35,561 INFO L470 AbstractCegarLoop]: Abstraction has 4152 states and 16072 transitions. [2021-10-07 15:10:35,562 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) [2021-10-07 15:10:35,562 INFO L276 IsEmpty]: Start isEmpty. Operand 4152 states and 16072 transitions. [2021-10-07 15:10:35,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-07 15:10:35,571 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:10:35,572 INFO L512 BasicCegarLoop]: trace histogram [64, 1, 1, 1] [2021-10-07 15:10:35,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2021-10-07 15:10:35,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,74 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:35,786 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:10:35,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:10:35,787 INFO L82 PathProgramCache]: Analyzing trace with hash -994175636, now seen corresponding path program 64 times [2021-10-07 15:10:35,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:10:35,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110059031] [2021-10-07 15:10:35,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:35,788 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:10:35,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:37,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:10:37,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:10:37,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110059031] [2021-10-07 15:10:37,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110059031] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:37,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492284098] [2021-10-07 15:10:37,616 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:10:37,617 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:37,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:10:37,618 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) [2021-10-07 15:10:37,618 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 [2021-10-07 15:10:38,360 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:10:38,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:10:38,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 67 conjunts are in the unsatisfiable core [2021-10-07 15:10:38,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:10:38,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:10:38,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492284098] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:38,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:10:38,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 66 [2021-10-07 15:10:38,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427935450] [2021-10-07 15:10:38,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2021-10-07 15:10:38,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:10:38,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-10-07 15:10:38,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2021-10-07 15:10:38,533 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) [2021-10-07 15:10:40,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:10:40,854 INFO L93 Difference]: Finished difference Result 9096 states and 35579 transitions. [2021-10-07 15:10:40,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-10-07 15:10:40,857 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 [2021-10-07 15:10:40,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:10:40,883 INFO L225 Difference]: With dead ends: 9096 [2021-10-07 15:10:40,883 INFO L226 Difference]: Without dead ends: 7796 [2021-10-07 15:10:40,884 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1694.4ms TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2021-10-07 15:10:40,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7796 states. [2021-10-07 15:10:40,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7796 to 4212. [2021-10-07 15:10:40,977 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) [2021-10-07 15:10:40,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4212 states to 4212 states and 16304 transitions. [2021-10-07 15:10:40,990 INFO L78 Accepts]: Start accepts. Automaton has 4212 states and 16304 transitions. Word has length 67 [2021-10-07 15:10:40,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:10:40,991 INFO L470 AbstractCegarLoop]: Abstraction has 4212 states and 16304 transitions. [2021-10-07 15:10:40,991 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) [2021-10-07 15:10:40,991 INFO L276 IsEmpty]: Start isEmpty. Operand 4212 states and 16304 transitions. [2021-10-07 15:10:41,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-07 15:10:41,001 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:10:41,001 INFO L512 BasicCegarLoop]: trace histogram [65, 1, 1, 1] [2021-10-07 15:10:41,038 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 [2021-10-07 15:10:41,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,75 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:41,216 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:10:41,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:10:41,217 INFO L82 PathProgramCache]: Analyzing trace with hash -754673183, now seen corresponding path program 65 times [2021-10-07 15:10:41,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:10:41,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564723063] [2021-10-07 15:10:41,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:41,218 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:10:41,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:43,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:10:43,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:10:43,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564723063] [2021-10-07 15:10:43,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564723063] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:43,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796314446] [2021-10-07 15:10:43,098 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:10:43,098 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:43,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:10:43,099 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) [2021-10-07 15:10:43,100 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 [2021-10-07 15:10:43,886 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2021-10-07 15:10:43,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:10:43,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 68 conjunts are in the unsatisfiable core [2021-10-07 15:10:43,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:10:44,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:10:44,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796314446] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:44,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:10:44,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 67 [2021-10-07 15:10:44,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271249711] [2021-10-07 15:10:44,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2021-10-07 15:10:44,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:10:44,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-10-07 15:10:44,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2021-10-07 15:10:44,063 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) [2021-10-07 15:10:46,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:10:46,390 INFO L93 Difference]: Finished difference Result 9232 states and 36112 transitions. [2021-10-07 15:10:46,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-10-07 15:10:46,391 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 [2021-10-07 15:10:46,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:10:46,414 INFO L225 Difference]: With dead ends: 9232 [2021-10-07 15:10:46,415 INFO L226 Difference]: Without dead ends: 7912 [2021-10-07 15:10:46,415 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1743.4ms TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2021-10-07 15:10:46,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7912 states. [2021-10-07 15:10:46,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7912 to 4272. [2021-10-07 15:10:46,526 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) [2021-10-07 15:10:46,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4272 states to 4272 states and 16536 transitions. [2021-10-07 15:10:46,540 INFO L78 Accepts]: Start accepts. Automaton has 4272 states and 16536 transitions. Word has length 68 [2021-10-07 15:10:46,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:10:46,540 INFO L470 AbstractCegarLoop]: Abstraction has 4272 states and 16536 transitions. [2021-10-07 15:10:46,540 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) [2021-10-07 15:10:46,540 INFO L276 IsEmpty]: Start isEmpty. Operand 4272 states and 16536 transitions. [2021-10-07 15:10:46,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-10-07 15:10:46,549 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:10:46,549 INFO L512 BasicCegarLoop]: trace histogram [66, 1, 1, 1] [2021-10-07 15:10:46,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2021-10-07 15:10:46,749 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,SelfDestructingSolverStorable82 [2021-10-07 15:10:46,750 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:10:46,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:10:46,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1920031732, now seen corresponding path program 66 times [2021-10-07 15:10:46,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:10:46,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627270053] [2021-10-07 15:10:46,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:46,752 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:10:46,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:48,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:10:48,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:10:48,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627270053] [2021-10-07 15:10:48,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627270053] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:48,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774748716] [2021-10-07 15:10:48,692 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:10:48,693 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:48,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:10:48,694 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) [2021-10-07 15:10:48,694 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 [2021-10-07 15:10:49,514 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2021-10-07 15:10:49,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:10:49,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 667 conjuncts, 69 conjunts are in the unsatisfiable core [2021-10-07 15:10:49,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:10:49,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:10:49,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774748716] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:49,701 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:10:49,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 68 [2021-10-07 15:10:49,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646070530] [2021-10-07 15:10:49,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2021-10-07 15:10:49,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:10:49,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-10-07 15:10:49,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2021-10-07 15:10:49,704 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) [2021-10-07 15:10:52,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:10:52,246 INFO L93 Difference]: Finished difference Result 9368 states and 36645 transitions. [2021-10-07 15:10:52,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-10-07 15:10:52,251 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 [2021-10-07 15:10:52,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:10:52,285 INFO L225 Difference]: With dead ends: 9368 [2021-10-07 15:10:52,285 INFO L226 Difference]: Without dead ends: 8028 [2021-10-07 15:10:52,285 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1800.8ms TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2021-10-07 15:10:52,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8028 states. [2021-10-07 15:10:52,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8028 to 4332. [2021-10-07 15:10:52,404 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) [2021-10-07 15:10:52,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4332 states to 4332 states and 16768 transitions. [2021-10-07 15:10:52,424 INFO L78 Accepts]: Start accepts. Automaton has 4332 states and 16768 transitions. Word has length 69 [2021-10-07 15:10:52,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:10:52,424 INFO L470 AbstractCegarLoop]: Abstraction has 4332 states and 16768 transitions. [2021-10-07 15:10:52,424 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) [2021-10-07 15:10:52,424 INFO L276 IsEmpty]: Start isEmpty. Operand 4332 states and 16768 transitions. [2021-10-07 15:10:52,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-07 15:10:52,434 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:10:52,434 INFO L512 BasicCegarLoop]: trace histogram [67, 1, 1, 1] [2021-10-07 15:10:52,460 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2021-10-07 15:10:52,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,77 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:52,635 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:10:52,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:10:52,636 INFO L82 PathProgramCache]: Analyzing trace with hash 608558913, now seen corresponding path program 67 times [2021-10-07 15:10:52,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:10:52,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228893889] [2021-10-07 15:10:52,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:52,637 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:10:52,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:54,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:10:54,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:10:54,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228893889] [2021-10-07 15:10:54,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228893889] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:54,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987348763] [2021-10-07 15:10:54,672 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:10:54,673 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:54,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:10:54,675 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) [2021-10-07 15:10:54,684 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 [2021-10-07 15:10:55,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:55,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 70 conjunts are in the unsatisfiable core [2021-10-07 15:10:55,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:10:55,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:10:55,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987348763] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:55,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:10:55,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 69 [2021-10-07 15:10:55,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266731255] [2021-10-07 15:10:55,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2021-10-07 15:10:55,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:10:55,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-10-07 15:10:55,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2021-10-07 15:10:55,660 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) [2021-10-07 15:10:58,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:10:58,296 INFO L93 Difference]: Finished difference Result 9504 states and 37178 transitions. [2021-10-07 15:10:58,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-10-07 15:10:58,297 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 [2021-10-07 15:10:58,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:10:58,322 INFO L225 Difference]: With dead ends: 9504 [2021-10-07 15:10:58,322 INFO L226 Difference]: Without dead ends: 8144 [2021-10-07 15:10:58,322 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1851.3ms TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2021-10-07 15:10:58,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8144 states. [2021-10-07 15:10:58,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8144 to 4392. [2021-10-07 15:10:58,483 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) [2021-10-07 15:10:58,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4392 states to 4392 states and 17000 transitions. [2021-10-07 15:10:58,496 INFO L78 Accepts]: Start accepts. Automaton has 4392 states and 17000 transitions. Word has length 70 [2021-10-07 15:10:58,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:10:58,497 INFO L470 AbstractCegarLoop]: Abstraction has 4392 states and 17000 transitions. [2021-10-07 15:10:58,497 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) [2021-10-07 15:10:58,497 INFO L276 IsEmpty]: Start isEmpty. Operand 4392 states and 17000 transitions. [2021-10-07 15:10:58,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-07 15:10:58,505 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:10:58,505 INFO L512 BasicCegarLoop]: trace histogram [68, 1, 1, 1] [2021-10-07 15:10:58,530 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 [2021-10-07 15:10:58,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,78 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:58,706 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:10:58,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:10:58,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1685457580, now seen corresponding path program 68 times [2021-10-07 15:10:58,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:10:58,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15304467] [2021-10-07 15:10:58,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:58,708 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:10:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:00,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:11:00,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:00,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15304467] [2021-10-07 15:11:00,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15304467] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:00,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210513789] [2021-10-07 15:11:00,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:11:00,758 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:00,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:00,761 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) [2021-10-07 15:11:00,763 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 [2021-10-07 15:11:01,585 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:11:01,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:11:01,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 71 conjunts are in the unsatisfiable core [2021-10-07 15:11:01,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:01,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:11:01,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210513789] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:01,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:01,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 70 [2021-10-07 15:11:01,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550720469] [2021-10-07 15:11:01,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2021-10-07 15:11:01,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:01,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-10-07 15:11:01,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2021-10-07 15:11:01,772 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) [2021-10-07 15:11:04,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:04,384 INFO L93 Difference]: Finished difference Result 9640 states and 37711 transitions. [2021-10-07 15:11:04,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-10-07 15:11:04,385 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 [2021-10-07 15:11:04,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:04,410 INFO L225 Difference]: With dead ends: 9640 [2021-10-07 15:11:04,410 INFO L226 Difference]: Without dead ends: 8260 [2021-10-07 15:11:04,410 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1906.7ms TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2021-10-07 15:11:04,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8260 states. [2021-10-07 15:11:04,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8260 to 4452. [2021-10-07 15:11:04,506 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) [2021-10-07 15:11:04,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4452 states to 4452 states and 17232 transitions. [2021-10-07 15:11:04,519 INFO L78 Accepts]: Start accepts. Automaton has 4452 states and 17232 transitions. Word has length 71 [2021-10-07 15:11:04,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:04,519 INFO L470 AbstractCegarLoop]: Abstraction has 4452 states and 17232 transitions. [2021-10-07 15:11:04,520 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) [2021-10-07 15:11:04,520 INFO L276 IsEmpty]: Start isEmpty. Operand 4452 states and 17232 transitions. [2021-10-07 15:11:04,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-10-07 15:11:04,527 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:04,527 INFO L512 BasicCegarLoop]: trace histogram [69, 1, 1, 1] [2021-10-07 15:11:04,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2021-10-07 15:11:04,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,79 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:04,728 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:11:04,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:04,729 INFO L82 PathProgramCache]: Analyzing trace with hash 709577889, now seen corresponding path program 69 times [2021-10-07 15:11:04,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:04,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997483296] [2021-10-07 15:11:04,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:04,730 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:04,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:06,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:11:06,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:06,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997483296] [2021-10-07 15:11:06,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997483296] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:06,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580018053] [2021-10-07 15:11:06,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:11:06,858 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:06,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:06,860 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) [2021-10-07 15:11:06,861 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 [2021-10-07 15:11:07,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2021-10-07 15:11:07,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:11:07,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 72 conjunts are in the unsatisfiable core [2021-10-07 15:11:07,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:07,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:11:07,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580018053] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:07,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:07,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 71 [2021-10-07 15:11:07,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409023314] [2021-10-07 15:11:07,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2021-10-07 15:11:07,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:07,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-10-07 15:11:07,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2021-10-07 15:11:07,958 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) [2021-10-07 15:11:10,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:10,665 INFO L93 Difference]: Finished difference Result 9776 states and 38244 transitions. [2021-10-07 15:11:10,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-10-07 15:11:10,666 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 [2021-10-07 15:11:10,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:10,691 INFO L225 Difference]: With dead ends: 9776 [2021-10-07 15:11:10,691 INFO L226 Difference]: Without dead ends: 8376 [2021-10-07 15:11:10,692 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1970.8ms TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2021-10-07 15:11:10,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8376 states. [2021-10-07 15:11:10,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8376 to 4512. [2021-10-07 15:11:10,788 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) [2021-10-07 15:11:10,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4512 states to 4512 states and 17464 transitions. [2021-10-07 15:11:10,802 INFO L78 Accepts]: Start accepts. Automaton has 4512 states and 17464 transitions. Word has length 72 [2021-10-07 15:11:10,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:10,802 INFO L470 AbstractCegarLoop]: Abstraction has 4512 states and 17464 transitions. [2021-10-07 15:11:10,802 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) [2021-10-07 15:11:10,802 INFO L276 IsEmpty]: Start isEmpty. Operand 4512 states and 17464 transitions. [2021-10-07 15:11:10,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-10-07 15:11:10,810 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:10,810 INFO L512 BasicCegarLoop]: trace histogram [70, 1, 1, 1] [2021-10-07 15:11:10,837 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2021-10-07 15:11:11,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,80 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:11,011 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:11:11,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:11,011 INFO L82 PathProgramCache]: Analyzing trace with hash 522078540, now seen corresponding path program 70 times [2021-10-07 15:11:11,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:11,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083258777] [2021-10-07 15:11:11,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:11,012 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:11,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:13,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:11:13,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:13,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083258777] [2021-10-07 15:11:13,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083258777] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:13,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660831938] [2021-10-07 15:11:13,221 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:11:13,222 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:13,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:13,224 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) [2021-10-07 15:11:13,226 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 [2021-10-07 15:11:14,086 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:11:14,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:11:14,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 703 conjuncts, 73 conjunts are in the unsatisfiable core [2021-10-07 15:11:14,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:14,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:11:14,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660831938] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:14,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:14,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 72 [2021-10-07 15:11:14,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097222131] [2021-10-07 15:11:14,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2021-10-07 15:11:14,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:14,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2021-10-07 15:11:14,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2021-10-07 15:11:14,283 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) [2021-10-07 15:11:17,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:17,323 INFO L93 Difference]: Finished difference Result 9912 states and 38777 transitions. [2021-10-07 15:11:17,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-10-07 15:11:17,324 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 [2021-10-07 15:11:17,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:17,349 INFO L225 Difference]: With dead ends: 9912 [2021-10-07 15:11:17,349 INFO L226 Difference]: Without dead ends: 8492 [2021-10-07 15:11:17,350 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 2054.8ms TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2021-10-07 15:11:17,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8492 states. [2021-10-07 15:11:17,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8492 to 4572. [2021-10-07 15:11:17,444 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) [2021-10-07 15:11:17,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4572 states to 4572 states and 17696 transitions. [2021-10-07 15:11:17,457 INFO L78 Accepts]: Start accepts. Automaton has 4572 states and 17696 transitions. Word has length 73 [2021-10-07 15:11:17,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:17,458 INFO L470 AbstractCegarLoop]: Abstraction has 4572 states and 17696 transitions. [2021-10-07 15:11:17,458 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) [2021-10-07 15:11:17,458 INFO L276 IsEmpty]: Start isEmpty. Operand 4572 states and 17696 transitions. [2021-10-07 15:11:17,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-10-07 15:11:17,465 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:17,465 INFO L512 BasicCegarLoop]: trace histogram [71, 1, 1, 1] [2021-10-07 15:11:17,490 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 [2021-10-07 15:11:17,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,81 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:17,666 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:11:17,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:17,667 INFO L82 PathProgramCache]: Analyzing trace with hash -995433983, now seen corresponding path program 71 times [2021-10-07 15:11:17,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:17,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270020965] [2021-10-07 15:11:17,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:17,668 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:17,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:19,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:11:19,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:19,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270020965] [2021-10-07 15:11:19,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270020965] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:19,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708145422] [2021-10-07 15:11:19,893 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:11:19,893 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:19,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:19,895 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) [2021-10-07 15:11:19,896 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 [2021-10-07 15:11:20,807 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2021-10-07 15:11:20,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:11:20,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 712 conjuncts, 74 conjunts are in the unsatisfiable core [2021-10-07 15:11:20,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:20,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:11:20,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708145422] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:20,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:20,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 73 [2021-10-07 15:11:20,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87775221] [2021-10-07 15:11:20,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2021-10-07 15:11:20,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:20,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-10-07 15:11:20,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2021-10-07 15:11:20,991 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) [2021-10-07 15:11:23,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:23,949 INFO L93 Difference]: Finished difference Result 10048 states and 39310 transitions. [2021-10-07 15:11:23,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-10-07 15:11:23,950 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 [2021-10-07 15:11:23,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:23,975 INFO L225 Difference]: With dead ends: 10048 [2021-10-07 15:11:23,976 INFO L226 Difference]: Without dead ends: 8608 [2021-10-07 15:11:23,976 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 2076.6ms TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2021-10-07 15:11:23,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8608 states. [2021-10-07 15:11:24,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8608 to 4632. [2021-10-07 15:11:24,141 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) [2021-10-07 15:11:24,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4632 states to 4632 states and 17928 transitions. [2021-10-07 15:11:24,155 INFO L78 Accepts]: Start accepts. Automaton has 4632 states and 17928 transitions. Word has length 74 [2021-10-07 15:11:24,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:24,156 INFO L470 AbstractCegarLoop]: Abstraction has 4632 states and 17928 transitions. [2021-10-07 15:11:24,156 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) [2021-10-07 15:11:24,156 INFO L276 IsEmpty]: Start isEmpty. Operand 4632 states and 17928 transitions. [2021-10-07 15:11:24,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-07 15:11:24,163 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:24,163 INFO L512 BasicCegarLoop]: trace histogram [72, 1, 1, 1] [2021-10-07 15:11:24,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2021-10-07 15:11:24,364 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,SelfDestructingSolverStorable88 [2021-10-07 15:11:24,364 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:11:24,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:24,365 INFO L82 PathProgramCache]: Analyzing trace with hash -793681940, now seen corresponding path program 72 times [2021-10-07 15:11:24,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:24,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866192909] [2021-10-07 15:11:24,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:24,366 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:26,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:11:26,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:26,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866192909] [2021-10-07 15:11:26,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866192909] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:26,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858176690] [2021-10-07 15:11:26,658 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:11:26,658 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:26,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:26,659 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) [2021-10-07 15:11:26,661 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 [2021-10-07 15:11:27,635 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-10-07 15:11:27,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:11:27,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 75 conjunts are in the unsatisfiable core [2021-10-07 15:11:27,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:27,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:11:27,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858176690] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:27,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:27,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 74 [2021-10-07 15:11:27,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512048903] [2021-10-07 15:11:27,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2021-10-07 15:11:27,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:27,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-10-07 15:11:27,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2021-10-07 15:11:27,828 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) [2021-10-07 15:11:31,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:31,076 INFO L93 Difference]: Finished difference Result 10184 states and 39843 transitions. [2021-10-07 15:11:31,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-10-07 15:11:31,076 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 [2021-10-07 15:11:31,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:31,104 INFO L225 Difference]: With dead ends: 10184 [2021-10-07 15:11:31,104 INFO L226 Difference]: Without dead ends: 8724 [2021-10-07 15:11:31,105 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 2141.4ms TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2021-10-07 15:11:31,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8724 states. [2021-10-07 15:11:31,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8724 to 4692. [2021-10-07 15:11:31,209 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) [2021-10-07 15:11:31,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4692 states to 4692 states and 18160 transitions. [2021-10-07 15:11:31,298 INFO L78 Accepts]: Start accepts. Automaton has 4692 states and 18160 transitions. Word has length 75 [2021-10-07 15:11:31,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:31,299 INFO L470 AbstractCegarLoop]: Abstraction has 4692 states and 18160 transitions. [2021-10-07 15:11:31,299 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) [2021-10-07 15:11:31,299 INFO L276 IsEmpty]: Start isEmpty. Operand 4692 states and 18160 transitions. [2021-10-07 15:11:31,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-10-07 15:11:31,307 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:31,307 INFO L512 BasicCegarLoop]: trace histogram [73, 1, 1, 1] [2021-10-07 15:11:31,333 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 [2021-10-07 15:11:31,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,83 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:31,508 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:11:31,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:31,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1165664097, now seen corresponding path program 73 times [2021-10-07 15:11:31,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:31,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810607783] [2021-10-07 15:11:31,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:31,510 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:31,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:33,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:11:33,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:33,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810607783] [2021-10-07 15:11:33,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810607783] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:33,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57471647] [2021-10-07 15:11:33,820 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:11:33,820 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:33,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:33,821 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) [2021-10-07 15:11:33,822 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 [2021-10-07 15:11:34,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:34,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 76 conjunts are in the unsatisfiable core [2021-10-07 15:11:34,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:34,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:11:34,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57471647] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:34,975 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:34,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 75 [2021-10-07 15:11:34,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300219072] [2021-10-07 15:11:34,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2021-10-07 15:11:34,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:34,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-10-07 15:11:34,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2021-10-07 15:11:34,979 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) [2021-10-07 15:11:38,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:38,446 INFO L93 Difference]: Finished difference Result 10320 states and 40376 transitions. [2021-10-07 15:11:38,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-10-07 15:11:38,446 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 [2021-10-07 15:11:38,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:38,473 INFO L225 Difference]: With dead ends: 10320 [2021-10-07 15:11:38,473 INFO L226 Difference]: Without dead ends: 8840 [2021-10-07 15:11:38,474 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 2151.1ms TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2021-10-07 15:11:38,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8840 states. [2021-10-07 15:11:38,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8840 to 4752. [2021-10-07 15:11:38,628 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) [2021-10-07 15:11:38,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4752 states to 4752 states and 18392 transitions. [2021-10-07 15:11:38,643 INFO L78 Accepts]: Start accepts. Automaton has 4752 states and 18392 transitions. Word has length 76 [2021-10-07 15:11:38,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:38,643 INFO L470 AbstractCegarLoop]: Abstraction has 4752 states and 18392 transitions. [2021-10-07 15:11:38,643 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) [2021-10-07 15:11:38,643 INFO L276 IsEmpty]: Start isEmpty. Operand 4752 states and 18392 transitions. [2021-10-07 15:11:38,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-07 15:11:38,651 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:38,651 INFO L512 BasicCegarLoop]: trace histogram [74, 1, 1, 1] [2021-10-07 15:11:38,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2021-10-07 15:11:38,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,84 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:38,852 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:11:38,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:38,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1775849100, now seen corresponding path program 74 times [2021-10-07 15:11:38,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:38,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054635523] [2021-10-07 15:11:38,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:38,854 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:38,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:41,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:11:41,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:41,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054635523] [2021-10-07 15:11:41,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054635523] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:41,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899574881] [2021-10-07 15:11:41,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:11:41,266 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:41,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:41,269 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) [2021-10-07 15:11:41,269 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 [2021-10-07 15:11:42,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:11:42,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:11:42,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 739 conjuncts, 77 conjunts are in the unsatisfiable core [2021-10-07 15:11:42,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:42,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:11:42,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899574881] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:42,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:42,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 76 [2021-10-07 15:11:42,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808116540] [2021-10-07 15:11:42,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2021-10-07 15:11:42,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:42,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-10-07 15:11:42,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2021-10-07 15:11:42,425 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) [2021-10-07 15:11:45,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:45,744 INFO L93 Difference]: Finished difference Result 10456 states and 40909 transitions. [2021-10-07 15:11:45,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-10-07 15:11:45,744 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 [2021-10-07 15:11:45,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:45,771 INFO L225 Difference]: With dead ends: 10456 [2021-10-07 15:11:45,772 INFO L226 Difference]: Without dead ends: 8956 [2021-10-07 15:11:45,772 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 2258.8ms TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2021-10-07 15:11:45,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8956 states. [2021-10-07 15:11:45,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8956 to 4812. [2021-10-07 15:11:45,874 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) [2021-10-07 15:11:45,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4812 states to 4812 states and 18624 transitions. [2021-10-07 15:11:45,889 INFO L78 Accepts]: Start accepts. Automaton has 4812 states and 18624 transitions. Word has length 77 [2021-10-07 15:11:45,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:45,889 INFO L470 AbstractCegarLoop]: Abstraction has 4812 states and 18624 transitions. [2021-10-07 15:11:45,890 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) [2021-10-07 15:11:45,890 INFO L276 IsEmpty]: Start isEmpty. Operand 4812 states and 18624 transitions. [2021-10-07 15:11:45,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-07 15:11:45,897 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:45,898 INFO L512 BasicCegarLoop]: trace histogram [75, 1, 1, 1] [2021-10-07 15:11:45,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2021-10-07 15:11:46,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,85 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:46,098 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:11:46,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:46,099 INFO L82 PathProgramCache]: Analyzing trace with hash -783252287, now seen corresponding path program 75 times [2021-10-07 15:11:46,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:46,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170998952] [2021-10-07 15:11:46,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:46,101 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:46,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:48,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:11:48,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:48,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170998952] [2021-10-07 15:11:48,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170998952] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:48,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281917067] [2021-10-07 15:11:48,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:11:48,612 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:48,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:48,614 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) [2021-10-07 15:11:48,615 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 [2021-10-07 15:11:49,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2021-10-07 15:11:49,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:11:49,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 78 conjunts are in the unsatisfiable core [2021-10-07 15:11:49,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:49,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:11:49,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281917067] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:49,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:49,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 77 [2021-10-07 15:11:49,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805355025] [2021-10-07 15:11:49,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2021-10-07 15:11:49,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:49,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-10-07 15:11:49,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2021-10-07 15:11:49,859 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) [2021-10-07 15:11:53,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:53,652 INFO L93 Difference]: Finished difference Result 10592 states and 41442 transitions. [2021-10-07 15:11:53,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-10-07 15:11:53,652 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 [2021-10-07 15:11:53,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:53,680 INFO L225 Difference]: With dead ends: 10592 [2021-10-07 15:11:53,680 INFO L226 Difference]: Without dead ends: 9072 [2021-10-07 15:11:53,680 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 2353.0ms TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2021-10-07 15:11:53,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9072 states. [2021-10-07 15:11:53,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9072 to 4872. [2021-10-07 15:11:53,781 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) [2021-10-07 15:11:53,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4872 states to 4872 states and 18856 transitions. [2021-10-07 15:11:53,796 INFO L78 Accepts]: Start accepts. Automaton has 4872 states and 18856 transitions. Word has length 78 [2021-10-07 15:11:53,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:53,796 INFO L470 AbstractCegarLoop]: Abstraction has 4872 states and 18856 transitions. [2021-10-07 15:11:53,796 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) [2021-10-07 15:11:53,796 INFO L276 IsEmpty]: Start isEmpty. Operand 4872 states and 18856 transitions. [2021-10-07 15:11:53,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-10-07 15:11:53,804 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:53,804 INFO L512 BasicCegarLoop]: trace histogram [76, 1, 1, 1] [2021-10-07 15:11:53,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2021-10-07 15:11:54,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,86 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:54,005 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:11:54,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:54,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1488983340, now seen corresponding path program 76 times [2021-10-07 15:11:54,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:54,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770497879] [2021-10-07 15:11:54,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:54,007 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:54,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:56,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:11:56,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:56,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770497879] [2021-10-07 15:11:56,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770497879] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:56,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897629264] [2021-10-07 15:11:56,598 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:11:56,598 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:56,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:56,600 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) [2021-10-07 15:11:56,600 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 [2021-10-07 15:11:57,607 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:11:57,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:11:57,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 79 conjunts are in the unsatisfiable core [2021-10-07 15:11:57,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:57,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:11:57,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897629264] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:57,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:57,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 78 [2021-10-07 15:11:57,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747026577] [2021-10-07 15:11:57,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2021-10-07 15:11:57,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:57,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-10-07 15:11:57,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2021-10-07 15:11:57,811 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) [2021-10-07 15:12:01,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:12:01,506 INFO L93 Difference]: Finished difference Result 10728 states and 41975 transitions. [2021-10-07 15:12:01,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-10-07 15:12:01,506 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 [2021-10-07 15:12:01,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:12:01,534 INFO L225 Difference]: With dead ends: 10728 [2021-10-07 15:12:01,534 INFO L226 Difference]: Without dead ends: 9188 [2021-10-07 15:12:01,535 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 2427.8ms TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2021-10-07 15:12:01,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9188 states. [2021-10-07 15:12:01,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9188 to 4932. [2021-10-07 15:12:01,640 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) [2021-10-07 15:12:01,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4932 states to 4932 states and 19088 transitions. [2021-10-07 15:12:01,655 INFO L78 Accepts]: Start accepts. Automaton has 4932 states and 19088 transitions. Word has length 79 [2021-10-07 15:12:01,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:12:01,655 INFO L470 AbstractCegarLoop]: Abstraction has 4932 states and 19088 transitions. [2021-10-07 15:12:01,655 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) [2021-10-07 15:12:01,655 INFO L276 IsEmpty]: Start isEmpty. Operand 4932 states and 19088 transitions. [2021-10-07 15:12:01,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-07 15:12:01,663 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:12:01,663 INFO L512 BasicCegarLoop]: trace histogram [77, 1, 1, 1] [2021-10-07 15:12:01,689 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2021-10-07 15:12:01,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,87 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:01,864 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:12:01,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:12:01,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1086156255, now seen corresponding path program 77 times [2021-10-07 15:12:01,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:12:01,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981099] [2021-10-07 15:12:01,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:12:01,866 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:12:01,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:04,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:12:04,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:12:04,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981099] [2021-10-07 15:12:04,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981099] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:04,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593029503] [2021-10-07 15:12:04,462 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:12:04,462 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:04,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:12:04,464 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) [2021-10-07 15:12:04,464 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 [2021-10-07 15:12:05,574 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2021-10-07 15:12:05,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:12:05,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 80 conjunts are in the unsatisfiable core [2021-10-07 15:12:05,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:12:05,772 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:12:05,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593029503] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:05,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:12:05,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 79 [2021-10-07 15:12:05,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711639123] [2021-10-07 15:12:05,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2021-10-07 15:12:05,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:12:05,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-10-07 15:12:05,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2021-10-07 15:12:05,774 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) [2021-10-07 15:12:09,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:12:09,700 INFO L93 Difference]: Finished difference Result 10864 states and 42508 transitions. [2021-10-07 15:12:09,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-10-07 15:12:09,700 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 [2021-10-07 15:12:09,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:12:09,731 INFO L225 Difference]: With dead ends: 10864 [2021-10-07 15:12:09,731 INFO L226 Difference]: Without dead ends: 9304 [2021-10-07 15:12:09,732 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 2434.7ms TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2021-10-07 15:12:09,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9304 states. [2021-10-07 15:12:09,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9304 to 4992. [2021-10-07 15:12:09,837 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) [2021-10-07 15:12:09,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4992 states to 4992 states and 19320 transitions. [2021-10-07 15:12:09,852 INFO L78 Accepts]: Start accepts. Automaton has 4992 states and 19320 transitions. Word has length 80 [2021-10-07 15:12:09,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:12:09,852 INFO L470 AbstractCegarLoop]: Abstraction has 4992 states and 19320 transitions. [2021-10-07 15:12:09,853 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) [2021-10-07 15:12:09,853 INFO L276 IsEmpty]: Start isEmpty. Operand 4992 states and 19320 transitions. [2021-10-07 15:12:09,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-10-07 15:12:09,861 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:12:09,861 INFO L512 BasicCegarLoop]: trace histogram [78, 1, 1, 1] [2021-10-07 15:12:09,889 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2021-10-07 15:12:10,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,88 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:10,062 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:12:10,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:12:10,063 INFO L82 PathProgramCache]: Analyzing trace with hash 688894924, now seen corresponding path program 78 times [2021-10-07 15:12:10,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:12:10,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187941887] [2021-10-07 15:12:10,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:12:10,064 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:12:10,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:12,772 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:12:12,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:12:12,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187941887] [2021-10-07 15:12:12,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187941887] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:12,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735191191] [2021-10-07 15:12:12,773 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:12:12,773 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:12,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:12:12,774 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) [2021-10-07 15:12:12,774 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 [2021-10-07 15:12:13,885 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2021-10-07 15:12:13,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:12:13,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 81 conjunts are in the unsatisfiable core [2021-10-07 15:12:13,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:12:14,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:12:14,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735191191] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:14,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:12:14,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 80 [2021-10-07 15:12:14,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593185287] [2021-10-07 15:12:14,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2021-10-07 15:12:14,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:12:14,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-10-07 15:12:14,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2021-10-07 15:12:14,116 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) [2021-10-07 15:12:18,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:12:18,525 INFO L93 Difference]: Finished difference Result 11000 states and 43041 transitions. [2021-10-07 15:12:18,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-10-07 15:12:18,526 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 [2021-10-07 15:12:18,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:12:18,557 INFO L225 Difference]: With dead ends: 11000 [2021-10-07 15:12:18,557 INFO L226 Difference]: Without dead ends: 9420 [2021-10-07 15:12:18,558 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 2546.7ms TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2021-10-07 15:12:18,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9420 states. [2021-10-07 15:12:18,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9420 to 5052. [2021-10-07 15:12:18,662 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) [2021-10-07 15:12:18,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5052 states to 5052 states and 19552 transitions. [2021-10-07 15:12:18,677 INFO L78 Accepts]: Start accepts. Automaton has 5052 states and 19552 transitions. Word has length 81 [2021-10-07 15:12:18,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:12:18,677 INFO L470 AbstractCegarLoop]: Abstraction has 5052 states and 19552 transitions. [2021-10-07 15:12:18,677 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) [2021-10-07 15:12:18,678 INFO L276 IsEmpty]: Start isEmpty. Operand 5052 states and 19552 transitions. [2021-10-07 15:12:18,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-10-07 15:12:18,685 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:12:18,686 INFO L512 BasicCegarLoop]: trace histogram [79, 1, 1, 1] [2021-10-07 15:12:18,713 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2021-10-07 15:12:18,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,89 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:18,886 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:12:18,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:12:18,887 INFO L82 PathProgramCache]: Analyzing trace with hash -119093375, now seen corresponding path program 79 times [2021-10-07 15:12:18,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:12:18,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485318906] [2021-10-07 15:12:18,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:12:18,888 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:12:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:21,604 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:12:21,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:12:21,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485318906] [2021-10-07 15:12:21,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485318906] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:21,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556622014] [2021-10-07 15:12:21,606 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:12:21,606 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:21,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:12:21,609 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) [2021-10-07 15:12:21,610 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 [2021-10-07 15:12:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:22,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 82 conjunts are in the unsatisfiable core [2021-10-07 15:12:22,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:12:22,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:12:22,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556622014] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:22,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:12:22,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 81 [2021-10-07 15:12:22,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278169307] [2021-10-07 15:12:22,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2021-10-07 15:12:22,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:12:22,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-10-07 15:12:22,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2021-10-07 15:12:22,889 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) [2021-10-07 15:12:26,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:12:26,908 INFO L93 Difference]: Finished difference Result 11136 states and 43574 transitions. [2021-10-07 15:12:26,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-10-07 15:12:26,909 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 [2021-10-07 15:12:26,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:12:26,940 INFO L225 Difference]: With dead ends: 11136 [2021-10-07 15:12:26,940 INFO L226 Difference]: Without dead ends: 9536 [2021-10-07 15:12:26,940 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 2555.9ms TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2021-10-07 15:12:26,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9536 states. [2021-10-07 15:12:27,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9536 to 5112. [2021-10-07 15:12:27,054 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) [2021-10-07 15:12:27,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5112 states to 5112 states and 19784 transitions. [2021-10-07 15:12:27,072 INFO L78 Accepts]: Start accepts. Automaton has 5112 states and 19784 transitions. Word has length 82 [2021-10-07 15:12:27,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:12:27,072 INFO L470 AbstractCegarLoop]: Abstraction has 5112 states and 19784 transitions. [2021-10-07 15:12:27,073 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) [2021-10-07 15:12:27,073 INFO L276 IsEmpty]: Start isEmpty. Operand 5112 states and 19784 transitions. [2021-10-07 15:12:27,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-07 15:12:27,081 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:12:27,081 INFO L512 BasicCegarLoop]: trace histogram [80, 1, 1, 1] [2021-10-07 15:12:27,107 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2021-10-07 15:12:27,282 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,SelfDestructingSolverStorable96 [2021-10-07 15:12:27,282 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:12:27,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:12:27,283 INFO L82 PathProgramCache]: Analyzing trace with hash 603073132, now seen corresponding path program 80 times [2021-10-07 15:12:27,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:12:27,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895554494] [2021-10-07 15:12:27,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:12:27,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:12:27,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:30,178 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:12:30,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:12:30,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895554494] [2021-10-07 15:12:30,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895554494] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:30,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098772349] [2021-10-07 15:12:30,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:12:30,180 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:30,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:12:30,181 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) [2021-10-07 15:12:30,183 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 [2021-10-07 15:12:31,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:12:31,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:12:31,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 83 conjunts are in the unsatisfiable core [2021-10-07 15:12:31,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:12:31,501 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:12:31,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098772349] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:31,502 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:12:31,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 82 [2021-10-07 15:12:31,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962233044] [2021-10-07 15:12:31,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2021-10-07 15:12:31,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:12:31,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-10-07 15:12:31,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2021-10-07 15:12:31,504 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) [2021-10-07 15:12:35,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:12:35,888 INFO L93 Difference]: Finished difference Result 11272 states and 44107 transitions. [2021-10-07 15:12:35,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-10-07 15:12:35,888 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 [2021-10-07 15:12:35,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:12:35,917 INFO L225 Difference]: With dead ends: 11272 [2021-10-07 15:12:35,917 INFO L226 Difference]: Without dead ends: 9652 [2021-10-07 15:12:35,917 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 2730.2ms TimeCoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2021-10-07 15:12:35,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9652 states. [2021-10-07 15:12:36,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9652 to 5172. [2021-10-07 15:12:36,028 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) [2021-10-07 15:12:36,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5172 states to 5172 states and 20016 transitions. [2021-10-07 15:12:36,043 INFO L78 Accepts]: Start accepts. Automaton has 5172 states and 20016 transitions. Word has length 83 [2021-10-07 15:12:36,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:12:36,043 INFO L470 AbstractCegarLoop]: Abstraction has 5172 states and 20016 transitions. [2021-10-07 15:12:36,044 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) [2021-10-07 15:12:36,044 INFO L276 IsEmpty]: Start isEmpty. Operand 5172 states and 20016 transitions. [2021-10-07 15:12:36,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-10-07 15:12:36,056 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:12:36,056 INFO L512 BasicCegarLoop]: trace histogram [81, 1, 1, 1] [2021-10-07 15:12:36,098 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 [2021-10-07 15:12:36,271 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,SelfDestructingSolverStorable97 [2021-10-07 15:12:36,272 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:12:36,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:12:36,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1515398369, now seen corresponding path program 81 times [2021-10-07 15:12:36,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:12:36,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295587193] [2021-10-07 15:12:36,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:12:36,273 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:12:36,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:39,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:12:39,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:12:39,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295587193] [2021-10-07 15:12:39,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295587193] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:39,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412814026] [2021-10-07 15:12:39,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:12:39,112 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:39,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:12:39,113 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) [2021-10-07 15:12:39,114 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 [2021-10-07 15:12:40,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2021-10-07 15:12:40,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:12:40,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 84 conjunts are in the unsatisfiable core [2021-10-07 15:12:40,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:12:40,517 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:12:40,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412814026] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:40,517 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:12:40,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 83 [2021-10-07 15:12:40,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122261548] [2021-10-07 15:12:40,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2021-10-07 15:12:40,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:12:40,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-10-07 15:12:40,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2021-10-07 15:12:40,520 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) [2021-10-07 15:12:45,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:12:45,135 INFO L93 Difference]: Finished difference Result 11408 states and 44640 transitions. [2021-10-07 15:12:45,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-10-07 15:12:45,136 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 [2021-10-07 15:12:45,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:12:45,168 INFO L225 Difference]: With dead ends: 11408 [2021-10-07 15:12:45,168 INFO L226 Difference]: Without dead ends: 9768 [2021-10-07 15:12:45,168 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 2672.7ms TimeCoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2021-10-07 15:12:45,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9768 states. [2021-10-07 15:12:45,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9768 to 5232. [2021-10-07 15:12:45,278 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) [2021-10-07 15:12:45,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5232 states to 5232 states and 20248 transitions. [2021-10-07 15:12:45,294 INFO L78 Accepts]: Start accepts. Automaton has 5232 states and 20248 transitions. Word has length 84 [2021-10-07 15:12:45,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:12:45,294 INFO L470 AbstractCegarLoop]: Abstraction has 5232 states and 20248 transitions. [2021-10-07 15:12:45,294 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) [2021-10-07 15:12:45,294 INFO L276 IsEmpty]: Start isEmpty. Operand 5232 states and 20248 transitions. [2021-10-07 15:12:45,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-07 15:12:45,302 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:12:45,302 INFO L512 BasicCegarLoop]: trace histogram [82, 1, 1, 1] [2021-10-07 15:12:45,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2021-10-07 15:12:45,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,92 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:45,504 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:12:45,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:12:45,505 INFO L82 PathProgramCache]: Analyzing trace with hash -267290356, now seen corresponding path program 82 times [2021-10-07 15:12:45,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:12:45,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725015764] [2021-10-07 15:12:45,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:12:45,506 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:12:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:48,489 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:12:48,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:12:48,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725015764] [2021-10-07 15:12:48,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725015764] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:48,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237914420] [2021-10-07 15:12:48,491 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:12:48,491 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:48,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:12:48,496 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) [2021-10-07 15:12:48,512 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 [2021-10-07 15:12:49,635 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:12:49,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:12:49,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 85 conjunts are in the unsatisfiable core [2021-10-07 15:12:49,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:12:49,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:12:49,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237914420] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:49,847 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:12:49,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 84 [2021-10-07 15:12:49,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37006211] [2021-10-07 15:12:49,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2021-10-07 15:12:49,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:12:49,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2021-10-07 15:12:49,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2021-10-07 15:12:49,849 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) [2021-10-07 15:12:54,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:12:54,590 INFO L93 Difference]: Finished difference Result 11544 states and 45173 transitions. [2021-10-07 15:12:54,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-10-07 15:12:54,590 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 [2021-10-07 15:12:54,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:12:54,619 INFO L225 Difference]: With dead ends: 11544 [2021-10-07 15:12:54,619 INFO L226 Difference]: Without dead ends: 9884 [2021-10-07 15:12:54,620 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 2819.4ms TimeCoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2021-10-07 15:12:54,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9884 states. [2021-10-07 15:12:54,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9884 to 5292. [2021-10-07 15:12:54,729 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) [2021-10-07 15:12:54,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5292 states to 5292 states and 20480 transitions. [2021-10-07 15:12:54,744 INFO L78 Accepts]: Start accepts. Automaton has 5292 states and 20480 transitions. Word has length 85 [2021-10-07 15:12:54,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:12:54,745 INFO L470 AbstractCegarLoop]: Abstraction has 5292 states and 20480 transitions. [2021-10-07 15:12:54,745 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) [2021-10-07 15:12:54,745 INFO L276 IsEmpty]: Start isEmpty. Operand 5292 states and 20480 transitions. [2021-10-07 15:12:54,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-07 15:12:54,753 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:12:54,753 INFO L512 BasicCegarLoop]: trace histogram [83, 1, 1, 1] [2021-10-07 15:12:54,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2021-10-07 15:12:54,954 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,SelfDestructingSolverStorable99 [2021-10-07 15:12:54,954 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:12:54,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:12:54,955 INFO L82 PathProgramCache]: Analyzing trace with hash 303934017, now seen corresponding path program 83 times [2021-10-07 15:12:54,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:12:54,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296877757] [2021-10-07 15:12:54,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:12:54,956 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:12:54,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:57,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:12:57,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:12:57,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296877757] [2021-10-07 15:12:57,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296877757] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:57,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322394275] [2021-10-07 15:12:57,938 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:12:57,938 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:57,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:12:57,939 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) [2021-10-07 15:12:57,939 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 [2021-10-07 15:12:59,147 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2021-10-07 15:12:59,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:12:59,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 86 conjunts are in the unsatisfiable core [2021-10-07 15:12:59,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:12:59,361 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:12:59,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322394275] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:59,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:12:59,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 85 [2021-10-07 15:12:59,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305450015] [2021-10-07 15:12:59,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2021-10-07 15:12:59,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:12:59,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-10-07 15:12:59,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2021-10-07 15:12:59,365 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) [2021-10-07 15:13:03,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:13:03,994 INFO L93 Difference]: Finished difference Result 11680 states and 45706 transitions. [2021-10-07 15:13:03,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-10-07 15:13:03,995 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 [2021-10-07 15:13:03,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:13:04,028 INFO L225 Difference]: With dead ends: 11680 [2021-10-07 15:13:04,028 INFO L226 Difference]: Without dead ends: 10000 [2021-10-07 15:13:04,029 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 2806.0ms TimeCoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2021-10-07 15:13:04,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10000 states. [2021-10-07 15:13:04,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10000 to 5352. [2021-10-07 15:13:04,143 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) [2021-10-07 15:13:04,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5352 states to 5352 states and 20712 transitions. [2021-10-07 15:13:04,159 INFO L78 Accepts]: Start accepts. Automaton has 5352 states and 20712 transitions. Word has length 86 [2021-10-07 15:13:04,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:13:04,159 INFO L470 AbstractCegarLoop]: Abstraction has 5352 states and 20712 transitions. [2021-10-07 15:13:04,160 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) [2021-10-07 15:13:04,160 INFO L276 IsEmpty]: Start isEmpty. Operand 5352 states and 20712 transitions. [2021-10-07 15:13:04,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-10-07 15:13:04,168 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:13:04,168 INFO L512 BasicCegarLoop]: trace histogram [84, 1, 1, 1] [2021-10-07 15:13:04,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2021-10-07 15:13:04,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,94 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:04,369 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:13:04,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:13:04,370 INFO L82 PathProgramCache]: Analyzing trace with hash 832020396, now seen corresponding path program 84 times [2021-10-07 15:13:04,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:13:04,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20141367] [2021-10-07 15:13:04,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:13:04,371 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:13:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:13:07,423 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:13:07,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:13:07,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20141367] [2021-10-07 15:13:07,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20141367] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:07,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738735670] [2021-10-07 15:13:07,424 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:13:07,425 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:07,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:13:07,426 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) [2021-10-07 15:13:07,426 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 [2021-10-07 15:13:08,762 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2021-10-07 15:13:08,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:13:08,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 87 conjunts are in the unsatisfiable core [2021-10-07 15:13:08,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:13:08,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:13:08,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738735670] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:08,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:13:08,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 86 [2021-10-07 15:13:08,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962728019] [2021-10-07 15:13:08,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2021-10-07 15:13:08,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:13:08,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-10-07 15:13:08,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2021-10-07 15:13:08,978 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) [2021-10-07 15:13:13,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:13:13,961 INFO L93 Difference]: Finished difference Result 11816 states and 46239 transitions. [2021-10-07 15:13:13,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-10-07 15:13:13,961 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 [2021-10-07 15:13:13,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:13:13,991 INFO L225 Difference]: With dead ends: 11816 [2021-10-07 15:13:13,991 INFO L226 Difference]: Without dead ends: 10116 [2021-10-07 15:13:13,992 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 2881.3ms TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2021-10-07 15:13:14,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10116 states. [2021-10-07 15:13:14,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10116 to 5412. [2021-10-07 15:13:14,101 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) [2021-10-07 15:13:14,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5412 states to 5412 states and 20944 transitions. [2021-10-07 15:13:14,118 INFO L78 Accepts]: Start accepts. Automaton has 5412 states and 20944 transitions. Word has length 87 [2021-10-07 15:13:14,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:13:14,118 INFO L470 AbstractCegarLoop]: Abstraction has 5412 states and 20944 transitions. [2021-10-07 15:13:14,118 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) [2021-10-07 15:13:14,118 INFO L276 IsEmpty]: Start isEmpty. Operand 5412 states and 20944 transitions. [2021-10-07 15:13:14,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-10-07 15:13:14,127 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:13:14,127 INFO L512 BasicCegarLoop]: trace histogram [85, 1, 1, 1] [2021-10-07 15:13:14,155 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 [2021-10-07 15:13:14,328 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,SelfDestructingSolverStorable101 [2021-10-07 15:13:14,328 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:13:14,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:13:14,329 INFO L82 PathProgramCache]: Analyzing trace with hash 22828961, now seen corresponding path program 85 times [2021-10-07 15:13:14,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:13:14,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533736860] [2021-10-07 15:13:14,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:13:14,330 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:13:14,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:13:17,435 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:13:17,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:13:17,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533736860] [2021-10-07 15:13:17,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533736860] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:17,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001841503] [2021-10-07 15:13:17,436 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:13:17,436 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:17,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:13:17,437 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) [2021-10-07 15:13:17,438 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 [2021-10-07 15:13:18,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:13:18,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 88 conjunts are in the unsatisfiable core [2021-10-07 15:13:18,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:13:18,884 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:13:18,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001841503] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:18,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:13:18,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 87 [2021-10-07 15:13:18,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082446418] [2021-10-07 15:13:18,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2021-10-07 15:13:18,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:13:18,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2021-10-07 15:13:18,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2021-10-07 15:13:18,887 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) [2021-10-07 15:13:24,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:13:24,171 INFO L93 Difference]: Finished difference Result 11952 states and 46772 transitions. [2021-10-07 15:13:24,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-10-07 15:13:24,171 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 [2021-10-07 15:13:24,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:13:24,201 INFO L225 Difference]: With dead ends: 11952 [2021-10-07 15:13:24,201 INFO L226 Difference]: Without dead ends: 10232 [2021-10-07 15:13:24,202 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 2929.8ms TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2021-10-07 15:13:24,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10232 states. [2021-10-07 15:13:24,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10232 to 5472. [2021-10-07 15:13:24,317 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) [2021-10-07 15:13:24,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5472 states to 5472 states and 21176 transitions. [2021-10-07 15:13:24,333 INFO L78 Accepts]: Start accepts. Automaton has 5472 states and 21176 transitions. Word has length 88 [2021-10-07 15:13:24,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:13:24,334 INFO L470 AbstractCegarLoop]: Abstraction has 5472 states and 21176 transitions. [2021-10-07 15:13:24,334 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) [2021-10-07 15:13:24,334 INFO L276 IsEmpty]: Start isEmpty. Operand 5472 states and 21176 transitions. [2021-10-07 15:13:24,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-10-07 15:13:24,342 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:13:24,343 INFO L512 BasicCegarLoop]: trace histogram [86, 1, 1, 1] [2021-10-07 15:13:24,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2021-10-07 15:13:24,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102,96 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:24,550 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:13:24,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:13:24,551 INFO L82 PathProgramCache]: Analyzing trace with hash 707698252, now seen corresponding path program 86 times [2021-10-07 15:13:24,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:13:24,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773456532] [2021-10-07 15:13:24,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:13:24,553 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:13:24,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:13:27,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:13:27,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:13:27,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773456532] [2021-10-07 15:13:27,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773456532] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:27,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597701698] [2021-10-07 15:13:27,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:13:27,741 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:27,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:13:27,742 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) [2021-10-07 15:13:27,743 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 [2021-10-07 15:13:28,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:13:28,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:13:28,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 847 conjuncts, 89 conjunts are in the unsatisfiable core [2021-10-07 15:13:28,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:13:29,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:13:29,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597701698] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:29,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:13:29,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 88 [2021-10-07 15:13:29,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575084532] [2021-10-07 15:13:29,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2021-10-07 15:13:29,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:13:29,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2021-10-07 15:13:29,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2021-10-07 15:13:29,225 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) [2021-10-07 15:13:34,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:13:34,484 INFO L93 Difference]: Finished difference Result 12088 states and 47305 transitions. [2021-10-07 15:13:34,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-10-07 15:13:34,484 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 [2021-10-07 15:13:34,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:13:34,515 INFO L225 Difference]: With dead ends: 12088 [2021-10-07 15:13:34,515 INFO L226 Difference]: Without dead ends: 10348 [2021-10-07 15:13:34,515 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 2987.3ms TimeCoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2021-10-07 15:13:34,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10348 states. [2021-10-07 15:13:34,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10348 to 5532. [2021-10-07 15:13:34,631 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) [2021-10-07 15:13:34,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5532 states to 5532 states and 21408 transitions. [2021-10-07 15:13:34,648 INFO L78 Accepts]: Start accepts. Automaton has 5532 states and 21408 transitions. Word has length 89 [2021-10-07 15:13:34,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:13:34,648 INFO L470 AbstractCegarLoop]: Abstraction has 5532 states and 21408 transitions. [2021-10-07 15:13:34,648 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) [2021-10-07 15:13:34,648 INFO L276 IsEmpty]: Start isEmpty. Operand 5532 states and 21408 transitions. [2021-10-07 15:13:34,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-07 15:13:34,657 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:13:34,657 INFO L512 BasicCegarLoop]: trace histogram [87, 1, 1, 1] [2021-10-07 15:13:34,687 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2021-10-07 15:13:34,858 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,SelfDestructingSolverStorable103 [2021-10-07 15:13:34,858 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:13:34,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:13:34,859 INFO L82 PathProgramCache]: Analyzing trace with hash 463809793, now seen corresponding path program 87 times [2021-10-07 15:13:34,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:13:34,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298101480] [2021-10-07 15:13:34,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:13:34,860 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:13:34,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:13:38,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:13:38,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:13:38,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298101480] [2021-10-07 15:13:38,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298101480] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:38,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230104584] [2021-10-07 15:13:38,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:13:38,118 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:38,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:13:38,119 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) [2021-10-07 15:13:38,120 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 [2021-10-07 15:13:39,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2021-10-07 15:13:39,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:13:39,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 856 conjuncts, 90 conjunts are in the unsatisfiable core [2021-10-07 15:13:39,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:13:39,692 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:13:39,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230104584] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:39,692 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:13:39,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 89 [2021-10-07 15:13:39,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931115426] [2021-10-07 15:13:39,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2021-10-07 15:13:39,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:13:39,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-10-07 15:13:39,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2021-10-07 15:13:39,696 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) [2021-10-07 15:13:45,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:13:45,485 INFO L93 Difference]: Finished difference Result 12224 states and 47838 transitions. [2021-10-07 15:13:45,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-10-07 15:13:45,485 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 [2021-10-07 15:13:45,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:13:45,516 INFO L225 Difference]: With dead ends: 12224 [2021-10-07 15:13:45,517 INFO L226 Difference]: Without dead ends: 10464 [2021-10-07 15:13:45,517 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 3077.2ms TimeCoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2021-10-07 15:13:45,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10464 states. [2021-10-07 15:13:45,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10464 to 5592. [2021-10-07 15:13:45,721 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) [2021-10-07 15:13:45,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5592 states to 5592 states and 21640 transitions. [2021-10-07 15:13:45,738 INFO L78 Accepts]: Start accepts. Automaton has 5592 states and 21640 transitions. Word has length 90 [2021-10-07 15:13:45,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:13:45,738 INFO L470 AbstractCegarLoop]: Abstraction has 5592 states and 21640 transitions. [2021-10-07 15:13:45,738 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) [2021-10-07 15:13:45,738 INFO L276 IsEmpty]: Start isEmpty. Operand 5592 states and 21640 transitions. [2021-10-07 15:13:45,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-10-07 15:13:45,747 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:13:45,747 INFO L512 BasicCegarLoop]: trace histogram [88, 1, 1, 1] [2021-10-07 15:13:45,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2021-10-07 15:13:45,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,98 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:45,948 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:13:45,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:13:45,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1493202156, now seen corresponding path program 88 times [2021-10-07 15:13:45,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:13:45,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142622835] [2021-10-07 15:13:45,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:13:45,950 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:13:45,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:13:49,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:13:49,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:13:49,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142622835] [2021-10-07 15:13:49,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142622835] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:49,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244622138] [2021-10-07 15:13:49,293 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:13:49,293 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:49,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:13:49,295 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) [2021-10-07 15:13:49,296 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 [2021-10-07 15:13:50,570 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:13:50,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:13:50,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 91 conjunts are in the unsatisfiable core [2021-10-07 15:13:50,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:13:50,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:13:50,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244622138] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:50,795 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:13:50,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 90 [2021-10-07 15:13:50,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686150825] [2021-10-07 15:13:50,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2021-10-07 15:13:50,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:13:50,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-10-07 15:13:50,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2021-10-07 15:13:50,798 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) [2021-10-07 15:13:56,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:13:56,434 INFO L93 Difference]: Finished difference Result 12360 states and 48371 transitions. [2021-10-07 15:13:56,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-10-07 15:13:56,435 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 [2021-10-07 15:13:56,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:13:56,465 INFO L225 Difference]: With dead ends: 12360 [2021-10-07 15:13:56,465 INFO L226 Difference]: Without dead ends: 10580 [2021-10-07 15:13:56,466 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 3164.6ms TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2021-10-07 15:13:56,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10580 states. [2021-10-07 15:13:56,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10580 to 5652. [2021-10-07 15:13:56,582 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) [2021-10-07 15:13:56,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5652 states to 5652 states and 21872 transitions. [2021-10-07 15:13:56,599 INFO L78 Accepts]: Start accepts. Automaton has 5652 states and 21872 transitions. Word has length 91 [2021-10-07 15:13:56,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:13:56,599 INFO L470 AbstractCegarLoop]: Abstraction has 5652 states and 21872 transitions. [2021-10-07 15:13:56,599 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) [2021-10-07 15:13:56,599 INFO L276 IsEmpty]: Start isEmpty. Operand 5652 states and 21872 transitions. [2021-10-07 15:13:56,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-10-07 15:13:56,608 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:13:56,608 INFO L512 BasicCegarLoop]: trace histogram [89, 1, 1, 1] [2021-10-07 15:13:56,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0 [2021-10-07 15:13:56,809 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,SelfDestructingSolverStorable105 [2021-10-07 15:13:56,809 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:13:56,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:13:56,810 INFO L82 PathProgramCache]: Analyzing trace with hash -955372959, now seen corresponding path program 89 times [2021-10-07 15:13:56,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:13:56,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070474939] [2021-10-07 15:13:56,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:13:56,811 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:13:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:14:00,237 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:14:00,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:14:00,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070474939] [2021-10-07 15:14:00,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070474939] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:00,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959033449] [2021-10-07 15:14:00,238 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:14:00,239 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:14:00,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:14:00,240 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) [2021-10-07 15:14:00,240 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 [2021-10-07 15:14:01,590 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2021-10-07 15:14:01,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:14:01,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 874 conjuncts, 92 conjunts are in the unsatisfiable core [2021-10-07 15:14:01,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:14:01,815 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:14:01,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959033449] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:01,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:14:01,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 91 [2021-10-07 15:14:01,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590637918] [2021-10-07 15:14:01,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2021-10-07 15:14:01,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:14:01,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-10-07 15:14:01,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2021-10-07 15:14:01,819 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) [2021-10-07 15:14:08,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:14:08,058 INFO L93 Difference]: Finished difference Result 12496 states and 48904 transitions. [2021-10-07 15:14:08,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-10-07 15:14:08,059 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 [2021-10-07 15:14:08,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:14:08,090 INFO L225 Difference]: With dead ends: 12496 [2021-10-07 15:14:08,090 INFO L226 Difference]: Without dead ends: 10696 [2021-10-07 15:14:08,091 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 3221.6ms TimeCoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2021-10-07 15:14:08,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10696 states. [2021-10-07 15:14:08,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10696 to 5712. [2021-10-07 15:14:08,209 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) [2021-10-07 15:14:08,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5712 states to 5712 states and 22104 transitions. [2021-10-07 15:14:08,226 INFO L78 Accepts]: Start accepts. Automaton has 5712 states and 22104 transitions. Word has length 92 [2021-10-07 15:14:08,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:14:08,227 INFO L470 AbstractCegarLoop]: Abstraction has 5712 states and 22104 transitions. [2021-10-07 15:14:08,227 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) [2021-10-07 15:14:08,227 INFO L276 IsEmpty]: Start isEmpty. Operand 5712 states and 22104 transitions. [2021-10-07 15:14:08,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-10-07 15:14:08,236 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:14:08,236 INFO L512 BasicCegarLoop]: trace histogram [90, 1, 1, 1] [2021-10-07 15:14:08,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2021-10-07 15:14:08,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,100 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:14:08,437 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:14:08,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:14:08,437 INFO L82 PathProgramCache]: Analyzing trace with hash 448209804, now seen corresponding path program 90 times [2021-10-07 15:14:08,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:14:08,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744085535] [2021-10-07 15:14:08,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:14:08,438 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:14:08,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:14:11,902 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:14:11,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:14:11,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744085535] [2021-10-07 15:14:11,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744085535] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:11,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421131582] [2021-10-07 15:14:11,903 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:14:11,903 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:14:11,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:14:11,905 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) [2021-10-07 15:14:11,906 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 [2021-10-07 15:14:13,336 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2021-10-07 15:14:13,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:14:13,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 883 conjuncts, 93 conjunts are in the unsatisfiable core [2021-10-07 15:14:13,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:14:13,565 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:14:13,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421131582] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:13,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:14:13,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 92 [2021-10-07 15:14:13,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600577038] [2021-10-07 15:14:13,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-10-07 15:14:13,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:14:13,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-10-07 15:14:13,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2021-10-07 15:14:13,569 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) [2021-10-07 15:14:19,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:14:19,714 INFO L93 Difference]: Finished difference Result 12632 states and 49437 transitions. [2021-10-07 15:14:19,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-10-07 15:14:19,715 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 [2021-10-07 15:14:19,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:14:19,747 INFO L225 Difference]: With dead ends: 12632 [2021-10-07 15:14:19,747 INFO L226 Difference]: Without dead ends: 10812 [2021-10-07 15:14:19,748 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 3273.4ms TimeCoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2021-10-07 15:14:19,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10812 states. [2021-10-07 15:14:19,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10812 to 5772. [2021-10-07 15:14:19,866 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) [2021-10-07 15:14:19,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5772 states to 5772 states and 22336 transitions. [2021-10-07 15:14:19,884 INFO L78 Accepts]: Start accepts. Automaton has 5772 states and 22336 transitions. Word has length 93 [2021-10-07 15:14:19,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:14:19,884 INFO L470 AbstractCegarLoop]: Abstraction has 5772 states and 22336 transitions. [2021-10-07 15:14:19,884 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) [2021-10-07 15:14:19,884 INFO L276 IsEmpty]: Start isEmpty. Operand 5772 states and 22336 transitions. [2021-10-07 15:14:19,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-10-07 15:14:19,893 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:14:19,894 INFO L512 BasicCegarLoop]: trace histogram [91, 1, 1, 1] [2021-10-07 15:14:19,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2021-10-07 15:14:20,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2021-10-07 15:14:20,101 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:14:20,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:14:20,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1009602497, now seen corresponding path program 91 times [2021-10-07 15:14:20,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:14:20,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302847802] [2021-10-07 15:14:20,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:14:20,103 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:14:20,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:14:23,678 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:14:23,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:14:23,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302847802] [2021-10-07 15:14:23,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302847802] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:23,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742828634] [2021-10-07 15:14:23,679 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:14:23,680 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:14:23,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:14:23,681 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) [2021-10-07 15:14:23,682 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 [2021-10-07 15:14:25,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:14:25,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 892 conjuncts, 94 conjunts are in the unsatisfiable core [2021-10-07 15:14:25,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:14:25,295 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:14:25,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742828634] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:25,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:14:25,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 93 [2021-10-07 15:14:25,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782130714] [2021-10-07 15:14:25,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2021-10-07 15:14:25,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:14:25,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2021-10-07 15:14:25,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2021-10-07 15:14:25,298 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) [2021-10-07 15:14:31,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:14:31,367 INFO L93 Difference]: Finished difference Result 12768 states and 49970 transitions. [2021-10-07 15:14:31,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-10-07 15:14:31,367 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 [2021-10-07 15:14:31,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:14:31,405 INFO L225 Difference]: With dead ends: 12768 [2021-10-07 15:14:31,405 INFO L226 Difference]: Without dead ends: 10928 [2021-10-07 15:14:31,406 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 3384.3ms TimeCoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2021-10-07 15:14:31,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10928 states. [2021-10-07 15:14:31,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10928 to 5832. [2021-10-07 15:14:31,527 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) [2021-10-07 15:14:31,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5832 states to 5832 states and 22568 transitions. [2021-10-07 15:14:31,544 INFO L78 Accepts]: Start accepts. Automaton has 5832 states and 22568 transitions. Word has length 94 [2021-10-07 15:14:31,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:14:31,545 INFO L470 AbstractCegarLoop]: Abstraction has 5832 states and 22568 transitions. [2021-10-07 15:14:31,545 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) [2021-10-07 15:14:31,545 INFO L276 IsEmpty]: Start isEmpty. Operand 5832 states and 22568 transitions. [2021-10-07 15:14:31,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-07 15:14:31,554 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:14:31,554 INFO L512 BasicCegarLoop]: trace histogram [92, 1, 1, 1] [2021-10-07 15:14:31,582 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 [2021-10-07 15:14:31,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,102 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:14:31,755 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:14:31,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:14:31,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1232906796, now seen corresponding path program 92 times [2021-10-07 15:14:31,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:14:31,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334203330] [2021-10-07 15:14:31,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:14:31,757 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:14:31,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:14:35,359 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:14:35,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:14:35,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334203330] [2021-10-07 15:14:35,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334203330] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:35,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243168690] [2021-10-07 15:14:35,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:14:35,360 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:14:35,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:14:35,362 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) [2021-10-07 15:14:35,362 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 [2021-10-07 15:14:36,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:14:36,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:14:36,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 95 conjunts are in the unsatisfiable core [2021-10-07 15:14:36,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:14:37,086 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:14:37,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243168690] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:37,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:14:37,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 94 [2021-10-07 15:14:37,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310191702] [2021-10-07 15:14:37,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-10-07 15:14:37,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:14:37,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-10-07 15:14:37,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-10-07 15:14:37,089 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) [2021-10-07 15:14:43,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:14:43,605 INFO L93 Difference]: Finished difference Result 12904 states and 50503 transitions. [2021-10-07 15:14:43,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-10-07 15:14:43,605 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 [2021-10-07 15:14:43,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:14:43,638 INFO L225 Difference]: With dead ends: 12904 [2021-10-07 15:14:43,638 INFO L226 Difference]: Without dead ends: 11044 [2021-10-07 15:14:43,638 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 3411.0ms TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-10-07 15:14:43,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11044 states. [2021-10-07 15:14:43,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11044 to 5892. [2021-10-07 15:14:43,761 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) [2021-10-07 15:14:43,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5892 states to 5892 states and 22800 transitions. [2021-10-07 15:14:43,779 INFO L78 Accepts]: Start accepts. Automaton has 5892 states and 22800 transitions. Word has length 95 [2021-10-07 15:14:43,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:14:43,779 INFO L470 AbstractCegarLoop]: Abstraction has 5892 states and 22800 transitions. [2021-10-07 15:14:43,779 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) [2021-10-07 15:14:43,780 INFO L276 IsEmpty]: Start isEmpty. Operand 5892 states and 22800 transitions. [2021-10-07 15:14:43,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-10-07 15:14:43,789 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:14:43,789 INFO L512 BasicCegarLoop]: trace histogram [93, 1, 1, 1] [2021-10-07 15:14:43,819 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2021-10-07 15:14:43,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,103 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:14:43,990 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:14:43,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:14:43,991 INFO L82 PathProgramCache]: Analyzing trace with hash -434594527, now seen corresponding path program 93 times [2021-10-07 15:14:43,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:14:43,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100886375] [2021-10-07 15:14:43,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:14:43,992 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:14:44,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:14:47,688 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:14:47,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:14:47,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100886375] [2021-10-07 15:14:47,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100886375] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:47,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471016248] [2021-10-07 15:14:47,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:14:47,689 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:14:47,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:14:47,690 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) [2021-10-07 15:14:47,692 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 [2021-10-07 15:14:49,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2021-10-07 15:14:49,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:14:49,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 910 conjuncts, 96 conjunts are in the unsatisfiable core [2021-10-07 15:14:49,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:14:49,455 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:14:49,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471016248] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:49,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:14:49,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 95 [2021-10-07 15:14:49,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904910911] [2021-10-07 15:14:49,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2021-10-07 15:14:49,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:14:49,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-10-07 15:14:49,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2021-10-07 15:14:49,459 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) [2021-10-07 15:14:56,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:14:56,293 INFO L93 Difference]: Finished difference Result 13040 states and 51036 transitions. [2021-10-07 15:14:56,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-10-07 15:14:56,293 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 [2021-10-07 15:14:56,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:14:56,326 INFO L225 Difference]: With dead ends: 13040 [2021-10-07 15:14:56,326 INFO L226 Difference]: Without dead ends: 11160 [2021-10-07 15:14:56,326 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 3501.7ms TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2021-10-07 15:14:56,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11160 states. [2021-10-07 15:14:56,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11160 to 5952. [2021-10-07 15:14:56,450 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) [2021-10-07 15:14:56,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5952 states to 5952 states and 23032 transitions. [2021-10-07 15:14:56,467 INFO L78 Accepts]: Start accepts. Automaton has 5952 states and 23032 transitions. Word has length 96 [2021-10-07 15:14:56,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:14:56,467 INFO L470 AbstractCegarLoop]: Abstraction has 5952 states and 23032 transitions. [2021-10-07 15:14:56,468 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) [2021-10-07 15:14:56,468 INFO L276 IsEmpty]: Start isEmpty. Operand 5952 states and 23032 transitions. [2021-10-07 15:14:56,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-10-07 15:14:56,477 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:14:56,477 INFO L512 BasicCegarLoop]: trace histogram [94, 1, 1, 1] [2021-10-07 15:14:56,506 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0 [2021-10-07 15:14:56,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,104 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:14:56,678 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:14:56,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:14:56,679 INFO L82 PathProgramCache]: Analyzing trace with hash -587527988, now seen corresponding path program 94 times [2021-10-07 15:14:56,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:14:56,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406095478] [2021-10-07 15:14:56,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:14:56,680 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:14:56,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:15:00,545 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:15:00,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:15:00,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406095478] [2021-10-07 15:15:00,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406095478] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:00,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025744778] [2021-10-07 15:15:00,546 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:15:00,547 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:15:00,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:15:00,548 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) [2021-10-07 15:15:00,549 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 [2021-10-07 15:15:02,039 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:15:02,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:15:02,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 97 conjunts are in the unsatisfiable core [2021-10-07 15:15:02,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:15:02,276 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:15:02,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025744778] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:02,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:15:02,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 96 [2021-10-07 15:15:02,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945303141] [2021-10-07 15:15:02,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2021-10-07 15:15:02,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:15:02,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2021-10-07 15:15:02,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2021-10-07 15:15:02,279 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) [2021-10-07 15:15:09,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:15:09,087 INFO L93 Difference]: Finished difference Result 13176 states and 51569 transitions. [2021-10-07 15:15:09,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-10-07 15:15:09,087 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 [2021-10-07 15:15:09,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:15:09,121 INFO L225 Difference]: With dead ends: 13176 [2021-10-07 15:15:09,121 INFO L226 Difference]: Without dead ends: 11276 [2021-10-07 15:15:09,121 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 3666.1ms TimeCoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2021-10-07 15:15:09,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11276 states. [2021-10-07 15:15:09,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11276 to 6012. [2021-10-07 15:15:09,247 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) [2021-10-07 15:15:09,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6012 states to 6012 states and 23264 transitions. [2021-10-07 15:15:09,266 INFO L78 Accepts]: Start accepts. Automaton has 6012 states and 23264 transitions. Word has length 97 [2021-10-07 15:15:09,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:15:09,266 INFO L470 AbstractCegarLoop]: Abstraction has 6012 states and 23264 transitions. [2021-10-07 15:15:09,266 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) [2021-10-07 15:15:09,266 INFO L276 IsEmpty]: Start isEmpty. Operand 6012 states and 23264 transitions. [2021-10-07 15:15:09,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-10-07 15:15:09,276 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:15:09,276 INFO L512 BasicCegarLoop]: trace histogram [95, 1, 1, 1] [2021-10-07 15:15:09,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2021-10-07 15:15:09,476 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,SelfDestructingSolverStorable111 [2021-10-07 15:15:09,477 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:15:09,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:15:09,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1033497983, now seen corresponding path program 95 times [2021-10-07 15:15:09,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:15:09,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794826990] [2021-10-07 15:15:09,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:15:09,478 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:15:09,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:15:13,402 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:15:13,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:15:13,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794826990] [2021-10-07 15:15:13,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794826990] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:13,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075932156] [2021-10-07 15:15:13,403 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:15:13,403 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:15:13,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:15:13,404 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) [2021-10-07 15:15:13,405 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 [2021-10-07 15:15:14,943 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2021-10-07 15:15:14,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:15:14,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 928 conjuncts, 98 conjunts are in the unsatisfiable core [2021-10-07 15:15:14,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:15:15,169 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:15:15,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075932156] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:15,170 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:15:15,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 97 [2021-10-07 15:15:15,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327665395] [2021-10-07 15:15:15,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2021-10-07 15:15:15,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:15:15,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-10-07 15:15:15,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2021-10-07 15:15:15,173 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) [2021-10-07 15:15:22,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:15:22,930 INFO L93 Difference]: Finished difference Result 13312 states and 52102 transitions. [2021-10-07 15:15:22,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-10-07 15:15:22,930 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 [2021-10-07 15:15:22,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:15:22,964 INFO L225 Difference]: With dead ends: 13312 [2021-10-07 15:15:22,964 INFO L226 Difference]: Without dead ends: 11392 [2021-10-07 15:15:22,964 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 3726.3ms TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2021-10-07 15:15:22,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11392 states. [2021-10-07 15:15:23,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11392 to 6072. [2021-10-07 15:15:23,091 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) [2021-10-07 15:15:23,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6072 states to 6072 states and 23496 transitions. [2021-10-07 15:15:23,109 INFO L78 Accepts]: Start accepts. Automaton has 6072 states and 23496 transitions. Word has length 98 [2021-10-07 15:15:23,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:15:23,109 INFO L470 AbstractCegarLoop]: Abstraction has 6072 states and 23496 transitions. [2021-10-07 15:15:23,109 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) [2021-10-07 15:15:23,109 INFO L276 IsEmpty]: Start isEmpty. Operand 6072 states and 23496 transitions. [2021-10-07 15:15:23,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-10-07 15:15:23,119 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:15:23,119 INFO L512 BasicCegarLoop]: trace histogram [96, 1, 1, 1] [2021-10-07 15:15:23,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Forceful destruction successful, exit code 0 [2021-10-07 15:15:23,319 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,SelfDestructingSolverStorable112 [2021-10-07 15:15:23,320 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:15:23,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:15:23,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1973665940, now seen corresponding path program 96 times [2021-10-07 15:15:23,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:15:23,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072706034] [2021-10-07 15:15:23,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:15:23,322 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:15:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:15:27,262 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:15:27,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:15:27,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072706034] [2021-10-07 15:15:27,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072706034] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:27,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416808333] [2021-10-07 15:15:27,263 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:15:27,263 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:15:27,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:15:27,264 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) [2021-10-07 15:15:27,265 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 [2021-10-07 15:15:28,842 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2021-10-07 15:15:28,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:15:28,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 937 conjuncts, 99 conjunts are in the unsatisfiable core [2021-10-07 15:15:28,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:15:29,085 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:15:29,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416808333] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:29,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:15:29,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 98 [2021-10-07 15:15:29,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952599708] [2021-10-07 15:15:29,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2021-10-07 15:15:29,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:15:29,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-10-07 15:15:29,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2021-10-07 15:15:29,089 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) [2021-10-07 15:15:36,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:15:36,688 INFO L93 Difference]: Finished difference Result 13448 states and 52635 transitions. [2021-10-07 15:15:36,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-10-07 15:15:36,689 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 [2021-10-07 15:15:36,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:15:36,723 INFO L225 Difference]: With dead ends: 13448 [2021-10-07 15:15:36,723 INFO L226 Difference]: Without dead ends: 11508 [2021-10-07 15:15:36,724 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 3734.8ms TimeCoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2021-10-07 15:15:36,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11508 states. [2021-10-07 15:15:36,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11508 to 6132. [2021-10-07 15:15:36,855 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) [2021-10-07 15:15:36,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6132 states to 6132 states and 23728 transitions. [2021-10-07 15:15:36,873 INFO L78 Accepts]: Start accepts. Automaton has 6132 states and 23728 transitions. Word has length 99 [2021-10-07 15:15:36,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:15:36,873 INFO L470 AbstractCegarLoop]: Abstraction has 6132 states and 23728 transitions. [2021-10-07 15:15:36,874 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) [2021-10-07 15:15:36,874 INFO L276 IsEmpty]: Start isEmpty. Operand 6132 states and 23728 transitions. [2021-10-07 15:15:36,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-07 15:15:36,883 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:15:36,884 INFO L512 BasicCegarLoop]: trace histogram [97, 1, 1, 1] [2021-10-07 15:15:36,913 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 [2021-10-07 15:15:37,084 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,SelfDestructingSolverStorable113 [2021-10-07 15:15:37,084 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:15:37,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:15:37,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1054101535, now seen corresponding path program 97 times [2021-10-07 15:15:37,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:15:37,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523781119] [2021-10-07 15:15:37,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:15:37,086 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:15:37,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:15:41,084 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:15:41,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:15:41,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523781119] [2021-10-07 15:15:41,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523781119] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:41,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922514405] [2021-10-07 15:15:41,085 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:15:41,085 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:15:41,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:15:41,087 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) [2021-10-07 15:15:41,087 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 [2021-10-07 15:15:42,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:15:42,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 946 conjuncts, 100 conjunts are in the unsatisfiable core [2021-10-07 15:15:42,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:15:42,868 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:15:42,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922514405] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:42,869 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:15:42,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 99 [2021-10-07 15:15:42,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587136010] [2021-10-07 15:15:42,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2021-10-07 15:15:42,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:15:42,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2021-10-07 15:15:42,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2021-10-07 15:15:42,873 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) [2021-10-07 15:15:51,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:15:51,430 INFO L93 Difference]: Finished difference Result 13584 states and 53168 transitions. [2021-10-07 15:15:51,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-10-07 15:15:51,430 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 [2021-10-07 15:15:51,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:15:51,465 INFO L225 Difference]: With dead ends: 13584 [2021-10-07 15:15:51,465 INFO L226 Difference]: Without dead ends: 11624 [2021-10-07 15:15:51,465 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 3787.4ms TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2021-10-07 15:15:51,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11624 states. [2021-10-07 15:15:51,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11624 to 6192. [2021-10-07 15:15:51,597 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) [2021-10-07 15:15:51,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6192 states to 6192 states and 23960 transitions. [2021-10-07 15:15:51,616 INFO L78 Accepts]: Start accepts. Automaton has 6192 states and 23960 transitions. Word has length 100 [2021-10-07 15:15:51,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:15:51,616 INFO L470 AbstractCegarLoop]: Abstraction has 6192 states and 23960 transitions. [2021-10-07 15:15:51,617 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) [2021-10-07 15:15:51,617 INFO L276 IsEmpty]: Start isEmpty. Operand 6192 states and 23960 transitions. [2021-10-07 15:15:51,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-10-07 15:15:51,626 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:15:51,626 INFO L512 BasicCegarLoop]: trace histogram [98, 1, 1, 1] [2021-10-07 15:15:51,656 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 [2021-10-07 15:15:51,827 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,SelfDestructingSolverStorable114 [2021-10-07 15:15:51,827 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:15:51,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:15:51,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1682591244, now seen corresponding path program 98 times [2021-10-07 15:15:51,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:15:51,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014428891] [2021-10-07 15:15:51,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:15:51,829 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:15:51,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:15:55,916 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:15:55,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:15:55,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014428891] [2021-10-07 15:15:55,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014428891] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:55,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310968889] [2021-10-07 15:15:55,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:15:55,917 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:15:55,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:15:55,918 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) [2021-10-07 15:15:55,919 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 [2021-10-07 15:15:57,476 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:15:57,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:15:57,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 955 conjuncts, 101 conjunts are in the unsatisfiable core [2021-10-07 15:15:57,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:15:57,729 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:15:57,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310968889] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:57,730 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:15:57,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 100 [2021-10-07 15:15:57,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978235920] [2021-10-07 15:15:57,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2021-10-07 15:15:57,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:15:57,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-10-07 15:15:57,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2021-10-07 15:15:57,734 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) [2021-10-07 15:16:05,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:16:05,780 INFO L93 Difference]: Finished difference Result 13720 states and 53701 transitions. [2021-10-07 15:16:05,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-10-07 15:16:05,780 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 [2021-10-07 15:16:05,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:16:05,828 INFO L225 Difference]: With dead ends: 13720 [2021-10-07 15:16:05,828 INFO L226 Difference]: Without dead ends: 11740 [2021-10-07 15:16:05,829 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 3877.9ms TimeCoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2021-10-07 15:16:05,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11740 states. [2021-10-07 15:16:05,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11740 to 6252. [2021-10-07 15:16:05,966 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) [2021-10-07 15:16:05,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6252 states to 6252 states and 24192 transitions. [2021-10-07 15:16:05,985 INFO L78 Accepts]: Start accepts. Automaton has 6252 states and 24192 transitions. Word has length 101 [2021-10-07 15:16:05,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:16:05,985 INFO L470 AbstractCegarLoop]: Abstraction has 6252 states and 24192 transitions. [2021-10-07 15:16:05,985 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) [2021-10-07 15:16:05,985 INFO L276 IsEmpty]: Start isEmpty. Operand 6252 states and 24192 transitions. [2021-10-07 15:16:05,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-10-07 15:16:05,995 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:16:05,995 INFO L512 BasicCegarLoop]: trace histogram [99, 1, 1, 1] [2021-10-07 15:16:06,025 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 [2021-10-07 15:16:06,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,109 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:16:06,196 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:16:06,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:16:06,197 INFO L82 PathProgramCache]: Analyzing trace with hash 620721473, now seen corresponding path program 99 times [2021-10-07 15:16:06,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:16:06,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840567590] [2021-10-07 15:16:06,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:16:06,198 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:16:06,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:16:10,495 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:16:10,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:16:10,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840567590] [2021-10-07 15:16:10,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840567590] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:16:10,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32316783] [2021-10-07 15:16:10,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:16:10,496 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:16:10,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:16:10,498 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) [2021-10-07 15:16:10,498 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 [2021-10-07 15:16:12,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2021-10-07 15:16:12,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:16:12,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 964 conjuncts, 102 conjunts are in the unsatisfiable core [2021-10-07 15:16:12,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:16:12,454 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:16:12,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32316783] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:16:12,454 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:16:12,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 101 [2021-10-07 15:16:12,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834051387] [2021-10-07 15:16:12,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2021-10-07 15:16:12,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:16:12,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-10-07 15:16:12,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2021-10-07 15:16:12,458 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) [2021-10-07 15:16:20,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:16:21,000 INFO L93 Difference]: Finished difference Result 13856 states and 54234 transitions. [2021-10-07 15:16:21,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-10-07 15:16:21,000 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 [2021-10-07 15:16:21,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:16:21,035 INFO L225 Difference]: With dead ends: 13856 [2021-10-07 15:16:21,035 INFO L226 Difference]: Without dead ends: 11856 [2021-10-07 15:16:21,036 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 3960.6ms TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2021-10-07 15:16:21,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11856 states. [2021-10-07 15:16:21,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11856 to 6312. [2021-10-07 15:16:21,171 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) [2021-10-07 15:16:21,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6312 states to 6312 states and 24424 transitions. [2021-10-07 15:16:21,190 INFO L78 Accepts]: Start accepts. Automaton has 6312 states and 24424 transitions. Word has length 102 [2021-10-07 15:16:21,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:16:21,190 INFO L470 AbstractCegarLoop]: Abstraction has 6312 states and 24424 transitions. [2021-10-07 15:16:21,190 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) [2021-10-07 15:16:21,190 INFO L276 IsEmpty]: Start isEmpty. Operand 6312 states and 24424 transitions. [2021-10-07 15:16:21,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-10-07 15:16:21,200 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:16:21,200 INFO L512 BasicCegarLoop]: trace histogram [100, 1, 1, 1] [2021-10-07 15:16:21,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Ended with exit code 0 [2021-10-07 15:16:21,414 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,SelfDestructingSolverStorable116 [2021-10-07 15:16:21,414 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:16:21,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:16:21,415 INFO L82 PathProgramCache]: Analyzing trace with hash 2062496940, now seen corresponding path program 100 times [2021-10-07 15:16:21,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:16:21,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770181835] [2021-10-07 15:16:21,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:16:21,416 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:16:21,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:16:25,770 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:16:25,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:16:25,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770181835] [2021-10-07 15:16:25,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770181835] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:16:25,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583556842] [2021-10-07 15:16:25,771 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:16:25,771 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:16:25,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:16:25,772 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) [2021-10-07 15:16:25,773 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 [2021-10-07 15:16:27,394 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:16:27,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:16:27,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 103 conjunts are in the unsatisfiable core [2021-10-07 15:16:27,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:16:27,645 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:16:27,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583556842] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:16:27,645 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:16:27,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 102 [2021-10-07 15:16:27,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052995015] [2021-10-07 15:16:27,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2021-10-07 15:16:27,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:16:27,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2021-10-07 15:16:27,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2021-10-07 15:16:27,647 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) [2021-10-07 15:16:36,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:16:36,527 INFO L93 Difference]: Finished difference Result 13992 states and 54767 transitions. [2021-10-07 15:16:36,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-10-07 15:16:36,527 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 [2021-10-07 15:16:36,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:16:36,562 INFO L225 Difference]: With dead ends: 13992 [2021-10-07 15:16:36,563 INFO L226 Difference]: Without dead ends: 11972 [2021-10-07 15:16:36,563 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 4135.9ms TimeCoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2021-10-07 15:16:36,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11972 states. [2021-10-07 15:16:36,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11972 to 6372. [2021-10-07 15:16:36,699 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) [2021-10-07 15:16:36,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6372 states to 6372 states and 24656 transitions. [2021-10-07 15:16:36,718 INFO L78 Accepts]: Start accepts. Automaton has 6372 states and 24656 transitions. Word has length 103 [2021-10-07 15:16:36,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:16:36,718 INFO L470 AbstractCegarLoop]: Abstraction has 6372 states and 24656 transitions. [2021-10-07 15:16:36,718 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) [2021-10-07 15:16:36,719 INFO L276 IsEmpty]: Start isEmpty. Operand 6372 states and 24656 transitions. [2021-10-07 15:16:36,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-10-07 15:16:36,795 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:16:36,795 INFO L512 BasicCegarLoop]: trace histogram [101, 1, 1, 1] [2021-10-07 15:16:36,824 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 [2021-10-07 15:16:36,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,111 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:16:36,996 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:16:36,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:16:36,996 INFO L82 PathProgramCache]: Analyzing trace with hash -487103839, now seen corresponding path program 101 times [2021-10-07 15:16:36,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:16:36,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019433270] [2021-10-07 15:16:36,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:16:36,997 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:16:37,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:16:41,387 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:16:41,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:16:41,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019433270] [2021-10-07 15:16:41,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019433270] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:16:41,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454656261] [2021-10-07 15:16:41,388 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:16:41,388 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:16:41,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:16:41,389 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) [2021-10-07 15:16:41,390 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 [2021-10-07 15:16:43,110 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 52 check-sat command(s) [2021-10-07 15:16:43,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:16:43,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 982 conjuncts, 104 conjunts are in the unsatisfiable core [2021-10-07 15:16:43,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:16:43,381 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:16:43,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454656261] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:16:43,382 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:16:43,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 103 [2021-10-07 15:16:43,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989462530] [2021-10-07 15:16:43,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2021-10-07 15:16:43,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:16:43,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2021-10-07 15:16:43,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2021-10-07 15:16:43,387 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) [2021-10-07 15:16:52,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:16:52,204 INFO L93 Difference]: Finished difference Result 14128 states and 55300 transitions. [2021-10-07 15:16:52,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-10-07 15:16:52,204 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 [2021-10-07 15:16:52,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:16:52,240 INFO L225 Difference]: With dead ends: 14128 [2021-10-07 15:16:52,240 INFO L226 Difference]: Without dead ends: 12088 [2021-10-07 15:16:52,241 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 4167.2ms TimeCoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2021-10-07 15:16:52,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12088 states. [2021-10-07 15:16:52,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12088 to 6432. [2021-10-07 15:16:52,478 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) [2021-10-07 15:16:52,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6432 states to 6432 states and 24888 transitions. [2021-10-07 15:16:52,497 INFO L78 Accepts]: Start accepts. Automaton has 6432 states and 24888 transitions. Word has length 104 [2021-10-07 15:16:52,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:16:52,498 INFO L470 AbstractCegarLoop]: Abstraction has 6432 states and 24888 transitions. [2021-10-07 15:16:52,498 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) [2021-10-07 15:16:52,498 INFO L276 IsEmpty]: Start isEmpty. Operand 6432 states and 24888 transitions. [2021-10-07 15:16:52,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-07 15:16:52,508 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:16:52,508 INFO L512 BasicCegarLoop]: trace histogram [102, 1, 1, 1] [2021-10-07 15:16:52,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Ended with exit code 0 [2021-10-07 15:16:52,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2021-10-07 15:16:52,709 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:16:52,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:16:52,710 INFO L82 PathProgramCache]: Analyzing trace with hash 2079650636, now seen corresponding path program 102 times [2021-10-07 15:16:52,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:16:52,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635625702] [2021-10-07 15:16:52,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:16:52,711 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:16:52,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:16:57,115 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:16:57,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:16:57,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635625702] [2021-10-07 15:16:57,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635625702] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:16:57,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515702268] [2021-10-07 15:16:57,116 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:16:57,116 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:16:57,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:16:57,118 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) [2021-10-07 15:16:57,124 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 [2021-10-07 15:16:58,868 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2021-10-07 15:16:58,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:16:58,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 991 conjuncts, 105 conjunts are in the unsatisfiable core [2021-10-07 15:16:58,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:16:59,128 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:16:59,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515702268] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:16:59,129 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:16:59,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 104 [2021-10-07 15:16:59,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942567582] [2021-10-07 15:16:59,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2021-10-07 15:16:59,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:16:59,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2021-10-07 15:16:59,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2021-10-07 15:16:59,134 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) [2021-10-07 15:17:08,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:17:08,761 INFO L93 Difference]: Finished difference Result 14264 states and 55833 transitions. [2021-10-07 15:17:08,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-10-07 15:17:08,762 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 [2021-10-07 15:17:08,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:17:08,797 INFO L225 Difference]: With dead ends: 14264 [2021-10-07 15:17:08,798 INFO L226 Difference]: Without dead ends: 12204 [2021-10-07 15:17:08,798 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 4178.0ms TimeCoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2021-10-07 15:17:08,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12204 states. [2021-10-07 15:17:08,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12204 to 6492. [2021-10-07 15:17:08,937 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) [2021-10-07 15:17:08,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6492 states to 6492 states and 25120 transitions. [2021-10-07 15:17:08,956 INFO L78 Accepts]: Start accepts. Automaton has 6492 states and 25120 transitions. Word has length 105 [2021-10-07 15:17:08,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:17:08,956 INFO L470 AbstractCegarLoop]: Abstraction has 6492 states and 25120 transitions. [2021-10-07 15:17:08,956 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) [2021-10-07 15:17:08,956 INFO L276 IsEmpty]: Start isEmpty. Operand 6492 states and 25120 transitions. [2021-10-07 15:17:08,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-10-07 15:17:08,966 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:17:08,967 INFO L512 BasicCegarLoop]: trace histogram [103, 1, 1, 1] [2021-10-07 15:17:08,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Forceful destruction successful, exit code 0 [2021-10-07 15:17:09,167 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,SelfDestructingSolverStorable119 [2021-10-07 15:17:09,167 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:17:09,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:17:09,168 INFO L82 PathProgramCache]: Analyzing trace with hash 44660737, now seen corresponding path program 103 times [2021-10-07 15:17:09,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:17:09,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658401426] [2021-10-07 15:17:09,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:17:09,169 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:17:09,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:17:13,742 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:17:13,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:17:13,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658401426] [2021-10-07 15:17:13,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658401426] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:17:13,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519902305] [2021-10-07 15:17:13,743 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:17:13,743 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:17:13,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:17:13,744 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) [2021-10-07 15:17:13,745 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 [2021-10-07 15:17:15,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:17:15,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 1000 conjuncts, 106 conjunts are in the unsatisfiable core [2021-10-07 15:17:15,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:17:15,715 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:17:15,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519902305] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:17:15,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:17:15,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 105 [2021-10-07 15:17:15,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158307529] [2021-10-07 15:17:15,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2021-10-07 15:17:15,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:17:15,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2021-10-07 15:17:15,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2021-10-07 15:17:15,718 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) [2021-10-07 15:17:25,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:17:25,289 INFO L93 Difference]: Finished difference Result 14400 states and 56366 transitions. [2021-10-07 15:17:25,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2021-10-07 15:17:25,289 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 [2021-10-07 15:17:25,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:17:25,327 INFO L225 Difference]: With dead ends: 14400 [2021-10-07 15:17:25,327 INFO L226 Difference]: Without dead ends: 12320 [2021-10-07 15:17:25,328 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 4358.7ms TimeCoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2021-10-07 15:17:25,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12320 states. [2021-10-07 15:17:25,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12320 to 6552. [2021-10-07 15:17:25,462 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) [2021-10-07 15:17:25,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6552 states to 6552 states and 25352 transitions. [2021-10-07 15:17:25,481 INFO L78 Accepts]: Start accepts. Automaton has 6552 states and 25352 transitions. Word has length 106 [2021-10-07 15:17:25,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:17:25,482 INFO L470 AbstractCegarLoop]: Abstraction has 6552 states and 25352 transitions. [2021-10-07 15:17:25,482 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) [2021-10-07 15:17:25,482 INFO L276 IsEmpty]: Start isEmpty. Operand 6552 states and 25352 transitions. [2021-10-07 15:17:25,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-10-07 15:17:25,493 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:17:25,494 INFO L512 BasicCegarLoop]: trace histogram [104, 1, 1, 1] [2021-10-07 15:17:25,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Forceful destruction successful, exit code 0 [2021-10-07 15:17:25,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,114 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:17:25,694 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:17:25,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:17:25,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1384483308, now seen corresponding path program 104 times [2021-10-07 15:17:25,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:17:25,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104677053] [2021-10-07 15:17:25,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:17:25,696 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:17:25,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:17:30,285 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:17:30,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:17:30,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104677053] [2021-10-07 15:17:30,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104677053] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:17:30,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907064017] [2021-10-07 15:17:30,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:17:30,286 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:17:30,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:17:30,287 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) [2021-10-07 15:17:30,288 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 [2021-10-07 15:17:32,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:17:32,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:17:32,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 1009 conjuncts, 107 conjunts are in the unsatisfiable core [2021-10-07 15:17:32,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:17:32,334 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:17:32,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907064017] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:17:32,335 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:17:32,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 106 [2021-10-07 15:17:32,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782664685] [2021-10-07 15:17:32,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2021-10-07 15:17:32,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:17:32,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2021-10-07 15:17:32,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2021-10-07 15:17:32,339 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) [2021-10-07 15:17:42,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:17:42,469 INFO L93 Difference]: Finished difference Result 14536 states and 56899 transitions. [2021-10-07 15:17:42,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-10-07 15:17:42,469 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 [2021-10-07 15:17:42,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:17:42,507 INFO L225 Difference]: With dead ends: 14536 [2021-10-07 15:17:42,507 INFO L226 Difference]: Without dead ends: 12436 [2021-10-07 15:17:42,508 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 4370.2ms TimeCoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2021-10-07 15:17:42,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12436 states. [2021-10-07 15:17:42,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12436 to 6612. [2021-10-07 15:17:42,649 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) [2021-10-07 15:17:42,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6612 states to 6612 states and 25584 transitions. [2021-10-07 15:17:42,668 INFO L78 Accepts]: Start accepts. Automaton has 6612 states and 25584 transitions. Word has length 107 [2021-10-07 15:17:42,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:17:42,669 INFO L470 AbstractCegarLoop]: Abstraction has 6612 states and 25584 transitions. [2021-10-07 15:17:42,669 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) [2021-10-07 15:17:42,669 INFO L276 IsEmpty]: Start isEmpty. Operand 6612 states and 25584 transitions. [2021-10-07 15:17:42,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-10-07 15:17:42,679 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:17:42,679 INFO L512 BasicCegarLoop]: trace histogram [105, 1, 1, 1] [2021-10-07 15:17:42,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Forceful destruction successful, exit code 0 [2021-10-07 15:17:42,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,115 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:17:42,880 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:17:42,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:17:42,881 INFO L82 PathProgramCache]: Analyzing trace with hash -30689951, now seen corresponding path program 105 times [2021-10-07 15:17:42,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:17:42,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024397283] [2021-10-07 15:17:42,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:17:42,883 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:17:43,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:17:47,682 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:17:47,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:17:47,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024397283] [2021-10-07 15:17:47,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024397283] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:17:47,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007344840] [2021-10-07 15:17:47,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:17:47,683 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:17:47,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:17:47,684 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) [2021-10-07 15:17:47,685 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 [2021-10-07 15:17:49,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2021-10-07 15:17:49,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:17:49,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 1018 conjuncts, 108 conjunts are in the unsatisfiable core [2021-10-07 15:17:49,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:17:49,841 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:17:49,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007344840] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:17:49,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:17:49,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 107 [2021-10-07 15:17:49,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043457198] [2021-10-07 15:17:49,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2021-10-07 15:17:49,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:17:49,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2021-10-07 15:17:49,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2021-10-07 15:17:49,845 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) [2021-10-07 15:17:59,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:17:59,842 INFO L93 Difference]: Finished difference Result 14672 states and 57432 transitions. [2021-10-07 15:17:59,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-10-07 15:17:59,843 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 [2021-10-07 15:17:59,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:17:59,881 INFO L225 Difference]: With dead ends: 14672 [2021-10-07 15:17:59,881 INFO L226 Difference]: Without dead ends: 12552 [2021-10-07 15:17:59,882 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 4490.5ms TimeCoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2021-10-07 15:17:59,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12552 states. [2021-10-07 15:18:00,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12552 to 6672. [2021-10-07 15:18:00,024 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) [2021-10-07 15:18:00,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6672 states to 6672 states and 25816 transitions. [2021-10-07 15:18:00,044 INFO L78 Accepts]: Start accepts. Automaton has 6672 states and 25816 transitions. Word has length 108 [2021-10-07 15:18:00,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:18:00,044 INFO L470 AbstractCegarLoop]: Abstraction has 6672 states and 25816 transitions. [2021-10-07 15:18:00,044 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) [2021-10-07 15:18:00,044 INFO L276 IsEmpty]: Start isEmpty. Operand 6672 states and 25816 transitions. [2021-10-07 15:18:00,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-10-07 15:18:00,055 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:18:00,055 INFO L512 BasicCegarLoop]: trace histogram [106, 1, 1, 1] [2021-10-07 15:18:00,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Ended with exit code 0 [2021-10-07 15:18:00,261 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,SelfDestructingSolverStorable122 [2021-10-07 15:18:00,261 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:18:00,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:18:00,262 INFO L82 PathProgramCache]: Analyzing trace with hash -951388020, now seen corresponding path program 106 times [2021-10-07 15:18:00,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:18:00,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129244799] [2021-10-07 15:18:00,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:18:00,263 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:18:00,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:18:05,030 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:18:05,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:18:05,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129244799] [2021-10-07 15:18:05,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129244799] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:18:05,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629271707] [2021-10-07 15:18:05,031 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:18:05,032 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:18:05,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:18:05,033 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) [2021-10-07 15:18:05,034 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 [2021-10-07 15:18:06,917 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:18:06,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:18:06,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 109 conjunts are in the unsatisfiable core [2021-10-07 15:18:06,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:18:07,177 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:18:07,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629271707] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:18:07,177 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:18:07,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 108 [2021-10-07 15:18:07,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309967566] [2021-10-07 15:18:07,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2021-10-07 15:18:07,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:18:07,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2021-10-07 15:18:07,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2021-10-07 15:18:07,180 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) [2021-10-07 15:18:17,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:18:17,551 INFO L93 Difference]: Finished difference Result 14808 states and 57965 transitions. [2021-10-07 15:18:17,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2021-10-07 15:18:17,551 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 [2021-10-07 15:18:17,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:18:17,589 INFO L225 Difference]: With dead ends: 14808 [2021-10-07 15:18:17,590 INFO L226 Difference]: Without dead ends: 12668 [2021-10-07 15:18:17,590 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 4537.3ms TimeCoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2021-10-07 15:18:17,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12668 states. [2021-10-07 15:18:17,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12668 to 6732. [2021-10-07 15:18:17,733 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) [2021-10-07 15:18:17,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6732 states to 6732 states and 26048 transitions. [2021-10-07 15:18:17,753 INFO L78 Accepts]: Start accepts. Automaton has 6732 states and 26048 transitions. Word has length 109 [2021-10-07 15:18:17,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:18:17,753 INFO L470 AbstractCegarLoop]: Abstraction has 6732 states and 26048 transitions. [2021-10-07 15:18:17,753 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) [2021-10-07 15:18:17,753 INFO L276 IsEmpty]: Start isEmpty. Operand 6732 states and 26048 transitions. [2021-10-07 15:18:17,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-07 15:18:17,765 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:18:17,765 INFO L512 BasicCegarLoop]: trace histogram [107, 1, 1, 1] [2021-10-07 15:18:17,796 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 [2021-10-07 15:18:17,965 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,SelfDestructingSolverStorable123 [2021-10-07 15:18:17,966 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:18:17,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:18:17,966 INFO L82 PathProgramCache]: Analyzing trace with hash 571742913, now seen corresponding path program 107 times [2021-10-07 15:18:17,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:18:17,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803442678] [2021-10-07 15:18:17,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:18:17,968 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:18:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:18:22,804 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:18:22,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:18:22,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803442678] [2021-10-07 15:18:22,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803442678] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:18:22,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871837188] [2021-10-07 15:18:22,805 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:18:22,805 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:18:22,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:18:22,806 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) [2021-10-07 15:18:22,807 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 [2021-10-07 15:18:24,791 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2021-10-07 15:18:24,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:18:24,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 1036 conjuncts, 110 conjunts are in the unsatisfiable core [2021-10-07 15:18:24,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:18:25,062 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:18:25,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871837188] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:18:25,063 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:18:25,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 109 [2021-10-07 15:18:25,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344033783] [2021-10-07 15:18:25,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2021-10-07 15:18:25,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:18:25,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2021-10-07 15:18:25,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2021-10-07 15:18:25,066 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) [2021-10-07 15:18:35,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:18:35,463 INFO L93 Difference]: Finished difference Result 14944 states and 58498 transitions. [2021-10-07 15:18:35,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2021-10-07 15:18:35,463 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 [2021-10-07 15:18:35,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:18:35,502 INFO L225 Difference]: With dead ends: 14944 [2021-10-07 15:18:35,503 INFO L226 Difference]: Without dead ends: 12784 [2021-10-07 15:18:35,503 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 4603.2ms TimeCoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2021-10-07 15:18:35,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12784 states. [2021-10-07 15:18:35,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12784 to 6792. [2021-10-07 15:18:35,707 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) [2021-10-07 15:18:35,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6792 states to 6792 states and 26280 transitions. [2021-10-07 15:18:35,728 INFO L78 Accepts]: Start accepts. Automaton has 6792 states and 26280 transitions. Word has length 110 [2021-10-07 15:18:35,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:18:35,728 INFO L470 AbstractCegarLoop]: Abstraction has 6792 states and 26280 transitions. [2021-10-07 15:18:35,728 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) [2021-10-07 15:18:35,728 INFO L276 IsEmpty]: Start isEmpty. Operand 6792 states and 26280 transitions. [2021-10-07 15:18:35,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-10-07 15:18:35,739 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:18:35,739 INFO L512 BasicCegarLoop]: trace histogram [108, 1, 1, 1] [2021-10-07 15:18:35,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Ended with exit code 0 [2021-10-07 15:18:35,940 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,SelfDestructingSolverStorable124 [2021-10-07 15:18:35,940 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:18:35,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:18:35,941 INFO L82 PathProgramCache]: Analyzing trace with hash 544161580, now seen corresponding path program 108 times [2021-10-07 15:18:35,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:18:35,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949047492] [2021-10-07 15:18:35,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:18:35,942 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:18:36,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:18:40,880 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:18:40,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:18:40,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949047492] [2021-10-07 15:18:40,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949047492] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:18:40,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419605993] [2021-10-07 15:18:40,881 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:18:40,881 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:18:40,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:18:40,882 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) [2021-10-07 15:18:40,883 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 [2021-10-07 15:18:42,870 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2021-10-07 15:18:42,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:18:42,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 1045 conjuncts, 111 conjunts are in the unsatisfiable core [2021-10-07 15:18:42,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:18:43,142 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:18:43,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419605993] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:18:43,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:18:43,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 110 [2021-10-07 15:18:43,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215079284] [2021-10-07 15:18:43,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2021-10-07 15:18:43,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:18:43,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2021-10-07 15:18:43,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2021-10-07 15:18:43,146 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) [2021-10-07 15:18:54,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:18:54,539 INFO L93 Difference]: Finished difference Result 15080 states and 59031 transitions. [2021-10-07 15:18:54,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-10-07 15:18:54,539 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 [2021-10-07 15:18:54,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:18:54,630 INFO L225 Difference]: With dead ends: 15080 [2021-10-07 15:18:54,630 INFO L226 Difference]: Without dead ends: 12900 [2021-10-07 15:18:54,631 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 4712.2ms TimeCoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2021-10-07 15:18:54,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12900 states. [2021-10-07 15:18:54,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12900 to 6852. [2021-10-07 15:18:54,772 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) [2021-10-07 15:18:54,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6852 states to 6852 states and 26512 transitions. [2021-10-07 15:18:54,792 INFO L78 Accepts]: Start accepts. Automaton has 6852 states and 26512 transitions. Word has length 111 [2021-10-07 15:18:54,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:18:54,793 INFO L470 AbstractCegarLoop]: Abstraction has 6852 states and 26512 transitions. [2021-10-07 15:18:54,793 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) [2021-10-07 15:18:54,793 INFO L276 IsEmpty]: Start isEmpty. Operand 6852 states and 26512 transitions. [2021-10-07 15:18:54,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-10-07 15:18:54,804 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:18:54,804 INFO L512 BasicCegarLoop]: trace histogram [109, 1, 1, 1] [2021-10-07 15:18:54,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Ended with exit code 0 [2021-10-07 15:18:55,005 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,SelfDestructingSolverStorable125 [2021-10-07 15:18:55,005 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:18:55,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:18:55,006 INFO L82 PathProgramCache]: Analyzing trace with hash -310859743, now seen corresponding path program 109 times [2021-10-07 15:18:55,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:18:55,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781432935] [2021-10-07 15:18:55,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:18:55,007 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:18:55,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:19:00,021 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:19:00,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:19:00,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781432935] [2021-10-07 15:19:00,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781432935] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:19:00,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629664013] [2021-10-07 15:19:00,022 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:19:00,022 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:19:00,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:19:00,023 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) [2021-10-07 15:19:00,024 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 [2021-10-07 15:19:01,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:19:01,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 112 conjunts are in the unsatisfiable core [2021-10-07 15:19:01,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:19:02,214 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:19:02,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629664013] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:19:02,215 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:19:02,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 111 [2021-10-07 15:19:02,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129746151] [2021-10-07 15:19:02,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2021-10-07 15:19:02,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:19:02,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2021-10-07 15:19:02,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2021-10-07 15:19:02,219 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) [2021-10-07 15:19:13,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:19:13,538 INFO L93 Difference]: Finished difference Result 15216 states and 59564 transitions. [2021-10-07 15:19:13,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2021-10-07 15:19:13,538 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 [2021-10-07 15:19:13,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:19:13,578 INFO L225 Difference]: With dead ends: 15216 [2021-10-07 15:19:13,578 INFO L226 Difference]: Without dead ends: 13016 [2021-10-07 15:19:13,579 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 4781.7ms TimeCoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2021-10-07 15:19:13,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13016 states. [2021-10-07 15:19:13,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13016 to 6912. [2021-10-07 15:19:13,727 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) [2021-10-07 15:19:13,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6912 states to 6912 states and 26744 transitions. [2021-10-07 15:19:13,748 INFO L78 Accepts]: Start accepts. Automaton has 6912 states and 26744 transitions. Word has length 112 [2021-10-07 15:19:13,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:19:13,748 INFO L470 AbstractCegarLoop]: Abstraction has 6912 states and 26744 transitions. [2021-10-07 15:19:13,748 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) [2021-10-07 15:19:13,749 INFO L276 IsEmpty]: Start isEmpty. Operand 6912 states and 26744 transitions. [2021-10-07 15:19:13,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-10-07 15:19:13,761 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:19:13,761 INFO L512 BasicCegarLoop]: trace histogram [110, 1, 1, 1] [2021-10-07 15:19:13,791 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 [2021-10-07 15:19:13,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,120 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:19:13,966 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:19:13,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:19:13,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1046716980, now seen corresponding path program 110 times [2021-10-07 15:19:13,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:19:13,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907968654] [2021-10-07 15:19:13,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:19:13,969 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:19:14,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:19:19,215 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:19:19,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:19:19,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907968654] [2021-10-07 15:19:19,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907968654] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:19:19,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601969883] [2021-10-07 15:19:19,216 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:19:19,217 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:19:19,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:19:19,218 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) [2021-10-07 15:19:19,219 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 [2021-10-07 15:19:21,168 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:19:21,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:19:21,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 1063 conjuncts, 113 conjunts are in the unsatisfiable core [2021-10-07 15:19:21,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:19:21,452 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:19:21,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601969883] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:19:21,453 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:19:21,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 112 [2021-10-07 15:19:21,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828159248] [2021-10-07 15:19:21,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2021-10-07 15:19:21,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:19:21,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2021-10-07 15:19:21,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2021-10-07 15:19:21,459 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) [2021-10-07 15:19:33,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:19:33,484 INFO L93 Difference]: Finished difference Result 15352 states and 60097 transitions. [2021-10-07 15:19:33,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-10-07 15:19:33,484 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 [2021-10-07 15:19:33,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:19:33,526 INFO L225 Difference]: With dead ends: 15352 [2021-10-07 15:19:33,527 INFO L226 Difference]: Without dead ends: 13132 [2021-10-07 15:19:33,528 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 4879.7ms TimeCoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2021-10-07 15:19:33,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13132 states. [2021-10-07 15:19:33,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13132 to 6972. [2021-10-07 15:19:33,682 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) [2021-10-07 15:19:33,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6972 states to 6972 states and 26976 transitions. [2021-10-07 15:19:33,704 INFO L78 Accepts]: Start accepts. Automaton has 6972 states and 26976 transitions. Word has length 113 [2021-10-07 15:19:33,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:19:33,704 INFO L470 AbstractCegarLoop]: Abstraction has 6972 states and 26976 transitions. [2021-10-07 15:19:33,704 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) [2021-10-07 15:19:33,705 INFO L276 IsEmpty]: Start isEmpty. Operand 6972 states and 26976 transitions. [2021-10-07 15:19:33,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-10-07 15:19:33,717 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:19:33,717 INFO L512 BasicCegarLoop]: trace histogram [111, 1, 1, 1] [2021-10-07 15:19:33,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Forceful destruction successful, exit code 0 [2021-10-07 15:19:33,923 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,SelfDestructingSolverStorable127 [2021-10-07 15:19:33,924 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:19:33,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:19:33,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1911512449, now seen corresponding path program 111 times [2021-10-07 15:19:33,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:19:33,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229350113] [2021-10-07 15:19:33,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:19:33,926 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:19:33,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:19:39,123 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:19:39,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:19:39,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229350113] [2021-10-07 15:19:39,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229350113] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:19:39,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673213031] [2021-10-07 15:19:39,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:19:39,124 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:19:39,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:19:39,126 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) [2021-10-07 15:19:39,127 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 [2021-10-07 15:19:41,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 57 check-sat command(s) [2021-10-07 15:19:41,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:19:41,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 1072 conjuncts, 114 conjunts are in the unsatisfiable core [2021-10-07 15:19:41,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:19:41,517 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:19:41,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673213031] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:19:41,518 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:19:41,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 113 [2021-10-07 15:19:41,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673661352] [2021-10-07 15:19:41,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2021-10-07 15:19:41,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:19:41,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2021-10-07 15:19:41,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2021-10-07 15:19:41,523 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) [2021-10-07 15:19:53,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:19:53,446 INFO L93 Difference]: Finished difference Result 15488 states and 60630 transitions. [2021-10-07 15:19:53,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2021-10-07 15:19:53,446 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 [2021-10-07 15:19:53,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:19:53,491 INFO L225 Difference]: With dead ends: 15488 [2021-10-07 15:19:53,491 INFO L226 Difference]: Without dead ends: 13248 [2021-10-07 15:19:53,492 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 4964.1ms TimeCoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2021-10-07 15:19:53,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13248 states. [2021-10-07 15:19:53,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13248 to 7032. [2021-10-07 15:19:53,649 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) [2021-10-07 15:19:53,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7032 states to 7032 states and 27208 transitions. [2021-10-07 15:19:53,670 INFO L78 Accepts]: Start accepts. Automaton has 7032 states and 27208 transitions. Word has length 114 [2021-10-07 15:19:53,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:19:53,670 INFO L470 AbstractCegarLoop]: Abstraction has 7032 states and 27208 transitions. [2021-10-07 15:19:53,670 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) [2021-10-07 15:19:53,670 INFO L276 IsEmpty]: Start isEmpty. Operand 7032 states and 27208 transitions. [2021-10-07 15:19:53,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-07 15:19:53,683 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:19:53,683 INFO L512 BasicCegarLoop]: trace histogram [112, 1, 1, 1] [2021-10-07 15:19:53,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Forceful destruction successful, exit code 0 [2021-10-07 15:19:53,883 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,SelfDestructingSolverStorable128 [2021-10-07 15:19:53,884 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:19:53,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:19:53,884 INFO L82 PathProgramCache]: Analyzing trace with hash -872655764, now seen corresponding path program 112 times [2021-10-07 15:19:53,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:19:53,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556640730] [2021-10-07 15:19:53,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:19:53,885 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:19:53,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:19:59,352 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 0 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:19:59,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:19:59,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556640730] [2021-10-07 15:19:59,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556640730] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:19:59,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048428383] [2021-10-07 15:19:59,353 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:19:59,354 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:19:59,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:19:59,355 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) [2021-10-07 15:19:59,362 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 [2021-10-07 15:20:01,383 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:20:01,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:20:01,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 1081 conjuncts, 115 conjunts are in the unsatisfiable core [2021-10-07 15:20:01,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:20:01,673 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 0 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:20:01,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048428383] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:20:01,674 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:20:01,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 114 [2021-10-07 15:20:01,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367511309] [2021-10-07 15:20:01,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2021-10-07 15:20:01,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:20:01,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2021-10-07 15:20:01,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2021-10-07 15:20:01,677 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) [2021-10-07 15:20:14,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:20:14,255 INFO L93 Difference]: Finished difference Result 15624 states and 61163 transitions. [2021-10-07 15:20:14,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2021-10-07 15:20:14,255 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 [2021-10-07 15:20:14,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:20:14,297 INFO L225 Difference]: With dead ends: 15624 [2021-10-07 15:20:14,297 INFO L226 Difference]: Without dead ends: 13364 [2021-10-07 15:20:14,298 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 5213.4ms TimeCoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2021-10-07 15:20:14,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13364 states. [2021-10-07 15:20:14,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13364 to 7092. [2021-10-07 15:20:14,445 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) [2021-10-07 15:20:14,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7092 states to 7092 states and 27440 transitions. [2021-10-07 15:20:14,466 INFO L78 Accepts]: Start accepts. Automaton has 7092 states and 27440 transitions. Word has length 115 [2021-10-07 15:20:14,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:20:14,467 INFO L470 AbstractCegarLoop]: Abstraction has 7092 states and 27440 transitions. [2021-10-07 15:20:14,467 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) [2021-10-07 15:20:14,467 INFO L276 IsEmpty]: Start isEmpty. Operand 7092 states and 27440 transitions. [2021-10-07 15:20:14,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-10-07 15:20:14,479 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:20:14,479 INFO L512 BasicCegarLoop]: trace histogram [113, 1, 1, 1] [2021-10-07 15:20:14,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Forceful destruction successful, exit code 0 [2021-10-07 15:20:14,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129,123 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:20:14,679 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:20:14,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:20:14,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1282524447, now seen corresponding path program 113 times [2021-10-07 15:20:14,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:20:14,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989222779] [2021-10-07 15:20:14,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:20:14,681 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:20:14,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:20:20,057 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:20:20,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:20:20,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989222779] [2021-10-07 15:20:20,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989222779] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:20:20,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131070900] [2021-10-07 15:20:20,058 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:20:20,058 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:20:20,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:20:20,059 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) [2021-10-07 15:20:20,060 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 [2021-10-07 15:20:22,161 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2021-10-07 15:20:22,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:20:22,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 116 conjunts are in the unsatisfiable core [2021-10-07 15:20:22,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:20:22,453 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:20:22,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131070900] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:20:22,453 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:20:22,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 115 [2021-10-07 15:20:22,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469376800] [2021-10-07 15:20:22,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 117 states [2021-10-07 15:20:22,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:20:22,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2021-10-07 15:20:22,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2021-10-07 15:20:22,457 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) [2021-10-07 15:20:35,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:20:35,112 INFO L93 Difference]: Finished difference Result 15760 states and 61696 transitions. [2021-10-07 15:20:35,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2021-10-07 15:20:35,113 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 [2021-10-07 15:20:35,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:20:35,160 INFO L225 Difference]: With dead ends: 15760 [2021-10-07 15:20:35,161 INFO L226 Difference]: Without dead ends: 13480 [2021-10-07 15:20:35,161 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 5131.9ms TimeCoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2021-10-07 15:20:35,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13480 states. [2021-10-07 15:20:35,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13480 to 7152. [2021-10-07 15:20:35,316 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) [2021-10-07 15:20:35,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7152 states to 7152 states and 27672 transitions. [2021-10-07 15:20:35,338 INFO L78 Accepts]: Start accepts. Automaton has 7152 states and 27672 transitions. Word has length 116 [2021-10-07 15:20:35,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:20:35,338 INFO L470 AbstractCegarLoop]: Abstraction has 7152 states and 27672 transitions. [2021-10-07 15:20:35,338 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) [2021-10-07 15:20:35,338 INFO L276 IsEmpty]: Start isEmpty. Operand 7152 states and 27672 transitions. [2021-10-07 15:20:35,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-10-07 15:20:35,350 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:20:35,350 INFO L512 BasicCegarLoop]: trace histogram [114, 1, 1, 1] [2021-10-07 15:20:35,383 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 [2021-10-07 15:20:35,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,124 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:20:35,551 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:20:35,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:20:35,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1103551732, now seen corresponding path program 114 times [2021-10-07 15:20:35,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:20:35,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736555521] [2021-10-07 15:20:35,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:20:35,554 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:20:35,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:20:41,149 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 0 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:20:41,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:20:41,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736555521] [2021-10-07 15:20:41,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736555521] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:20:41,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066466889] [2021-10-07 15:20:41,150 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:20:41,150 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:20:41,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:20:41,155 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) [2021-10-07 15:20:41,157 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 [2021-10-07 15:20:43,289 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 58 check-sat command(s) [2021-10-07 15:20:43,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:20:43,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 1099 conjuncts, 117 conjunts are in the unsatisfiable core [2021-10-07 15:20:43,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:20:43,576 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 0 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:20:43,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066466889] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:20:43,577 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:20:43,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 116 [2021-10-07 15:20:43,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337634716] [2021-10-07 15:20:43,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2021-10-07 15:20:43,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:20:43,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2021-10-07 15:20:43,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2021-10-07 15:20:43,581 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) Received shutdown request... [2021-10-07 15:20:53,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-10-07 15:20:53,965 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:53,980 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 [2021-10-07 15:20:53,980 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 [2021-10-07 15:20:53,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Forceful destruction successful, exit code 0 [2021-10-07 15:20:54,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,125 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:20:54,173 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (7152states) and FLOYD_HOARE automaton (currently 84 states, 118 states before enhancement),while ReachableStatesComputation was computing reachable states (4533 states constructed, input type IntersectNwa). [2021-10-07 15:20:54,176 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:54,176 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:54,176 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:54,176 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:54,176 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:54,177 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:54,177 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:54,177 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:54,177 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:54,177 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:54,177 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:54,177 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:54,177 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 15:20:54,177 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 15:20:54,178 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-07 15:20:54,178 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-07 15:20:54,178 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:54,178 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:54,178 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:54,178 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:54,178 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:54,178 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:54,178 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:54,178 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:54,179 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:54,179 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:54,179 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:54,179 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:54,179 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:54,179 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:54,179 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:54,179 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:54,179 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:54,180 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:54,180 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:54,185 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 15:20:54,186 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 15:20:54,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 03:20:54 BasicIcfg [2021-10-07 15:20:54,189 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 15:20:54,190 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.witnessprinter [2021-10-07 15:20:54,192 INFO L168 Benchmark]: Toolchain (without parser) took 769973.38 ms. Allocated memory was 152.0 MB in the beginning and 2.0 GB in the end (delta: 1.9 GB). Free memory was 132.9 MB in the beginning and 284.9 MB in the end (delta: -152.0 MB). Peak memory consumption was 1.7 GB. Max. memory is 8.0 GB. [2021-10-07 15:20:54,192 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 152.0 MB. Free memory was 123.9 MB in the beginning and 123.8 MB in the end (delta: 111.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 15:20:54,193 INFO L168 Benchmark]: CACSL2BoogieTranslator took 419.07 ms. Allocated memory is still 152.0 MB. Free memory was 132.6 MB in the beginning and 122.0 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-07 15:20:54,193 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.69 ms. Allocated memory is still 152.0 MB. Free memory was 122.0 MB in the beginning and 135.6 MB in the end (delta: -13.5 MB). Peak memory consumption was 6.0 MB. Max. memory is 8.0 GB. [2021-10-07 15:20:54,194 INFO L168 Benchmark]: Boogie Preprocessor took 72.29 ms. Allocated memory is still 152.0 MB. Free memory was 135.6 MB in the beginning and 133.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 15:20:54,196 INFO L168 Benchmark]: RCFGBuilder took 909.42 ms. Allocated memory is still 152.0 MB. Free memory was 133.9 MB in the beginning and 105.2 MB in the end (delta: 28.7 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. [2021-10-07 15:20:54,197 INFO L168 Benchmark]: TraceAbstraction took 768463.10 ms. Allocated memory was 152.0 MB in the beginning and 2.0 GB in the end (delta: 1.9 GB). Free memory was 104.8 MB in the beginning and 284.9 MB in the end (delta: -180.1 MB). Peak memory consumption was 1.7 GB. Max. memory is 8.0 GB. [2021-10-07 15:20:54,198 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 152.0 MB. Free memory was 123.9 MB in the beginning and 123.8 MB in the end (delta: 111.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 419.07 ms. Allocated memory is still 152.0 MB. Free memory was 132.6 MB in the beginning and 122.0 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 89.69 ms. Allocated memory is still 152.0 MB. Free memory was 122.0 MB in the beginning and 135.6 MB in the end (delta: -13.5 MB). Peak memory consumption was 6.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 72.29 ms. Allocated memory is still 152.0 MB. Free memory was 135.6 MB in the beginning and 133.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 909.42 ms. Allocated memory is still 152.0 MB. Free memory was 133.9 MB in the beginning and 105.2 MB in the end (delta: 28.7 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 768463.10 ms. Allocated memory was 152.0 MB in the beginning and 2.0 GB in the end (delta: 1.9 GB). Free memory was 104.8 MB in the beginning and 284.9 MB in the end (delta: -180.1 MB). Peak memory consumption was 1.7 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6327.1ms, 141 PlacesBefore, 54 PlacesAfterwards, 138 TransitionsBefore, 45 TransitionsAfterwards, 2520 CoEnabledTransitionPairs, 7 FixpointIterations, 63 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 8 ConcurrentYvCompositions, 6 ChoiceCompositions, 124 TotalNumberOfCompositions, 3550 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3550, positive: 3550, positive conditional: 0, positive unconditional: 3550, 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: 1323, positive: 1323, positive conditional: 0, positive unconditional: 1323, 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: 1323, positive: 1323, positive conditional: 0, positive unconditional: 1323, 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: 3550, positive: 2227, positive conditional: 0, positive unconditional: 2227, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1323, unknown conditional: 0, unknown unconditional: 1323] , 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 constructing difference of abstraction (7152states) and FLOYD_HOARE automaton (currently 84 states, 118 states before enhancement),while ReachableStatesComputation was computing reachable states (4533 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 42]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (7152states) and FLOYD_HOARE automaton (currently 84 states, 118 states before enhancement),while ReachableStatesComputation was computing reachable states (4533 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (7152states) and FLOYD_HOARE automaton (currently 84 states, 118 states before enhancement),while ReachableStatesComputation was computing reachable states (4533 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (7152states) and FLOYD_HOARE automaton (currently 84 states, 118 states before enhancement),while ReachableStatesComputation was computing reachable states (4533 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (7152states) and FLOYD_HOARE automaton (currently 84 states, 118 states before enhancement),while ReachableStatesComputation was computing reachable states (4533 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (7152states) and FLOYD_HOARE automaton (currently 84 states, 118 states before enhancement),while ReachableStatesComputation was computing reachable states (4533 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (7152states) and FLOYD_HOARE automaton (currently 84 states, 118 states before enhancement),while ReachableStatesComputation was computing reachable states (4533 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (7152states) and FLOYD_HOARE automaton (currently 84 states, 118 states before enhancement),while ReachableStatesComputation was computing reachable states (4533 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (7152states) and FLOYD_HOARE automaton (currently 84 states, 118 states before enhancement),while ReachableStatesComputation was computing reachable states (4533 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (7152states) and FLOYD_HOARE automaton (currently 84 states, 118 states before enhancement),while ReachableStatesComputation was computing reachable states (4533 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (7152states) and FLOYD_HOARE automaton (currently 84 states, 118 states before enhancement),while ReachableStatesComputation was computing reachable states (4533 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (7152states) and FLOYD_HOARE automaton (currently 84 states, 118 states before enhancement),while ReachableStatesComputation was computing reachable states (4533 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (7152states) and FLOYD_HOARE automaton (currently 84 states, 118 states before enhancement),while ReachableStatesComputation was computing reachable states (4533 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (7152states) and FLOYD_HOARE automaton (currently 84 states, 118 states before enhancement),while ReachableStatesComputation was computing reachable states (4533 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (7152states) and FLOYD_HOARE automaton (currently 84 states, 118 states before enhancement),while ReachableStatesComputation was computing reachable states (4533 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (7152states) and FLOYD_HOARE automaton (currently 84 states, 118 states before enhancement),while ReachableStatesComputation was computing reachable states (4533 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 77]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (7152states) and FLOYD_HOARE automaton (currently 84 states, 118 states before enhancement),while ReachableStatesComputation was computing reachable states (4533 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 77]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (7152states) and FLOYD_HOARE automaton (currently 84 states, 118 states before enhancement),while ReachableStatesComputation was computing reachable states (4533 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (7152states) and FLOYD_HOARE automaton (currently 84 states, 118 states before enhancement),while ReachableStatesComputation was computing reachable states (4533 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (7152states) and FLOYD_HOARE automaton (currently 84 states, 118 states before enhancement),while ReachableStatesComputation was computing reachable states (4533 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 169 locations, 36 error locations. Started 1 CEGAR loops. OverallTime: 768311.7ms, OverallIterations: 132, TraceHistogramMax: 114, EmptinessCheckTime: 833.4ms, AutomataDifference: 386446.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6552.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 15964 SDtfs, 385114 SDslu, 152614 SDs, 0 SdLazy, 29595 SolverSat, 74841 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 37849.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13562 GetRequests, 6738 SyntacticMatches, 0 SemanticMatches, 6824 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12890 ImplicationChecksByTransitivity, 205869.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=7152occurred in iteration=131, InterpolantAutomatonStates: 6841, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 15405.0ms AutomataMinimizationTime, 131 MinimizatonAttempts, 393844 StatesRemovedByMinimization, 127 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 2325.6ms SsaConstructionTime, 14070.1ms SatisfiabilityAnalysisTime, 235859.2ms InterpolantComputationTime, 14014 NumberOfCodeBlocks, 14002 NumberOfCodeBlocksAsserted, 1985 NumberOfCheckSat, 13758 ConstructedInterpolants, 0 QuantifiedInterpolants, 41266 SizeOfPredicates, 15 NumberOfNonLiveVariables, 68428 ConjunctsInSsa, 6952 ConjunctsInUnsatCore, 256 InterpolantComputations, 14 PerfectInterpolantSequences, 30/506977 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