/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/mult-flipped-dist.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 16:16:40,362 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 16:16:40,365 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 16:16:40,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-06 16:16:40,424 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-06 16:16:40,425 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-06 16:16:40,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-06 16:16:40,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-06 16:16:40,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-06 16:16:40,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-06 16:16:40,434 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-06 16:16:40,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-06 16:16:40,438 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-06 16:16:40,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-06 16:16:40,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-06 16:16:40,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-06 16:16:40,446 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-06 16:16:40,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-06 16:16:40,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-06 16:16:40,460 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-06 16:16:40,465 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-06 16:16:40,518 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 16:16:40,518 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 16:16:40,519 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 16:16:40,519 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 16:16:40,524 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 16:16:40,524 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 16:16:40,524 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 16:16:40,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 16:16:40,525 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 16:16:40,525 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 16:16:40,526 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 16:16:40,526 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 16:16:40,526 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 16:16:40,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-06 16:16:40,527 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 16:16:40,527 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-06 16:16:40,527 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-06 16:16:40,527 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 16:16:40,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-06 16:16:40,528 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 16:16:40,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-06 16:16:40,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 16:16:40,528 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 16:16:40,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 16:16:40,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 16:16:40,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 16:16:40,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 16:16:40,529 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-06 16:16:40,530 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-06 16:16:40,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-06 16:16:40,530 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-06 16:16:40,530 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 16:16:40,531 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 16:16:40,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 16:16:40,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 16:16:40,967 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 16:16:40,968 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 16:16:40,969 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 16:16:40,970 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c [2021-10-06 16:16:41,059 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36e84ff3c/7ea0f32b7ec644e69054093b2b0476d6/FLAGb99d5fe61 [2021-10-06 16:16:41,797 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 16:16:41,798 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c [2021-10-06 16:16:41,809 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36e84ff3c/7ea0f32b7ec644e69054093b2b0476d6/FLAGb99d5fe61 [2021-10-06 16:16:42,121 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36e84ff3c/7ea0f32b7ec644e69054093b2b0476d6 [2021-10-06 16:16:42,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 16:16:42,133 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-06 16:16:42,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 16:16:42,136 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 16:16:42,144 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 16:16:42,145 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 04:16:42" (1/1) ... [2021-10-06 16:16:42,146 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a8a4a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:16:42, skipping insertion in model container [2021-10-06 16:16:42,147 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 04:16:42" (1/1) ... [2021-10-06 16:16:42,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 16:16:42,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 16:16:42,368 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/mult-flipped-dist.wvr.c[2034,2047] [2021-10-06 16:16:42,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 16:16:42,381 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 16:16:42,408 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/mult-flipped-dist.wvr.c[2034,2047] [2021-10-06 16:16:42,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 16:16:42,429 INFO L208 MainTranslator]: Completed translation [2021-10-06 16:16:42,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:16:42 WrapperNode [2021-10-06 16:16:42,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 16:16:42,431 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 16:16:42,431 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 16:16:42,431 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 16:16:42,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:16:42" (1/1) ... [2021-10-06 16:16:42,452 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:16:42" (1/1) ... [2021-10-06 16:16:42,504 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 16:16:42,505 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 16:16:42,505 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 16:16:42,505 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 16:16:42,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:16:42" (1/1) ... [2021-10-06 16:16:42,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:16:42" (1/1) ... [2021-10-06 16:16:42,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:16:42" (1/1) ... [2021-10-06 16:16:42,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:16:42" (1/1) ... [2021-10-06 16:16:42,553 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:16:42" (1/1) ... [2021-10-06 16:16:42,562 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:16:42" (1/1) ... [2021-10-06 16:16:42,565 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:16:42" (1/1) ... [2021-10-06 16:16:42,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 16:16:42,575 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 16:16:42,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 16:16:42,576 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 16:16:42,577 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:16:42" (1/1) ... [2021-10-06 16:16:42,587 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 16:16:42,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:16:42,626 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-06 16:16:42,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-06 16:16:42,699 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 16:16:42,699 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 16:16:42,700 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 16:16:42,700 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 16:16:42,700 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-06 16:16:42,700 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-06 16:16:42,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-06 16:16:42,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 16:16:42,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-06 16:16:42,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 16:16:42,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 16:16:42,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-06 16:16:42,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 16:16:42,704 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-06 16:16:43,106 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 16:16:43,106 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-06 16:16:43,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 04:16:43 BoogieIcfgContainer [2021-10-06 16:16:43,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 16:16:43,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 16:16:43,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 16:16:43,118 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 16:16:43,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 04:16:42" (1/3) ... [2021-10-06 16:16:43,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56e73c1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 04:16:43, skipping insertion in model container [2021-10-06 16:16:43,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:16:42" (2/3) ... [2021-10-06 16:16:43,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56e73c1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 04:16:43, skipping insertion in model container [2021-10-06 16:16:43,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 04:16:43" (3/3) ... [2021-10-06 16:16:43,122 INFO L111 eAbstractionObserver]: Analyzing ICFG mult-flipped-dist.wvr.c [2021-10-06 16:16:43,130 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-06 16:16:43,130 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 16:16:43,130 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-10-06 16:16:43,131 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 16:16:43,182 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,183 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,183 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,184 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,184 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,184 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,185 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,186 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,186 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,186 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,186 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,187 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,187 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,187 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,188 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,188 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,188 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,189 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,189 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,189 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,189 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,190 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,190 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,190 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,191 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,192 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,192 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,192 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,193 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,193 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,194 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,194 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,194 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,195 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,195 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,195 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,195 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,233 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,234 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,234 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,234 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,235 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,235 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,235 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,235 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,236 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,236 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,236 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,237 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,238 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,238 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,238 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,239 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,239 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,240 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,240 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,240 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,241 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,241 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,241 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,242 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,242 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,242 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,242 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,243 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,243 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,243 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,244 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,244 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,244 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,244 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,245 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,249 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,249 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,249 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,250 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,255 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,256 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,256 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,256 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,259 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,259 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,260 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,260 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:16:43,273 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-06 16:16:43,356 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 16:16:43,365 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-06 16:16:43,365 INFO L340 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2021-10-06 16:16:43,385 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 16:16:43,400 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 132 places, 129 transitions, 282 flow [2021-10-06 16:16:43,405 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 132 places, 129 transitions, 282 flow [2021-10-06 16:16:43,407 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 132 places, 129 transitions, 282 flow [2021-10-06 16:16:43,487 INFO L129 PetriNetUnfolder]: 7/126 cut-off events. [2021-10-06 16:16:43,487 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-06 16:16:43,496 INFO L84 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 126 events. 7/126 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 161 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2021-10-06 16:16:43,506 INFO L116 LiptonReduction]: Number of co-enabled transitions 3302 [2021-10-06 16:16:48,905 INFO L131 LiptonReduction]: Checked pairs total: 3531 [2021-10-06 16:16:48,906 INFO L133 LiptonReduction]: Total number of compositions: 123 [2021-10-06 16:16:48,919 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 48 places, 41 transitions, 106 flow [2021-10-06 16:16:48,994 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1143 states, 967 states have (on average 3.9586349534643226) internal successors, (3828), 1142 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:16:49,001 INFO L276 IsEmpty]: Start isEmpty. Operand has 1143 states, 967 states have (on average 3.9586349534643226) internal successors, (3828), 1142 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:16:49,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-06 16:16:49,008 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:16:49,008 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-06 16:16:49,009 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2021-10-06 16:16:49,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:16:49,015 INFO L82 PathProgramCache]: Analyzing trace with hash 15232492, now seen corresponding path program 1 times [2021-10-06 16:16:49,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:16:49,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517639] [2021-10-06 16:16:49,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:16:49,028 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:16:49,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:16:49,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:16:49,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:16:49,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517639] [2021-10-06 16:16:49,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517639] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:16:49,244 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:16:49,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-06 16:16:49,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396808653] [2021-10-06 16:16:49,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 16:16:49,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:16:49,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 16:16:49,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:16:49,276 INFO L87 Difference]: Start difference. First operand has 1143 states, 967 states have (on average 3.9586349534643226) internal successors, (3828), 1142 states have internal predecessors, (3828), 0 states have call successors, (0), 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 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:16:49,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:16:49,385 INFO L93 Difference]: Finished difference Result 1858 states and 6193 transitions. [2021-10-06 16:16:49,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 16:16:49,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-06 16:16:49,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:16:49,448 INFO L225 Difference]: With dead ends: 1858 [2021-10-06 16:16:49,448 INFO L226 Difference]: Without dead ends: 1858 [2021-10-06 16:16:49,450 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:16:49,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1858 states. [2021-10-06 16:16:49,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1858 to 1285. [2021-10-06 16:16:49,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1285 states, 1109 states have (on average 4.27502254283138) internal successors, (4741), 1284 states have internal predecessors, (4741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:16:49,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1285 states to 1285 states and 4741 transitions. [2021-10-06 16:16:49,656 INFO L78 Accepts]: Start accepts. Automaton has 1285 states and 4741 transitions. Word has length 4 [2021-10-06 16:16:49,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:16:49,658 INFO L470 AbstractCegarLoop]: Abstraction has 1285 states and 4741 transitions. [2021-10-06 16:16:49,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:16:49,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1285 states and 4741 transitions. [2021-10-06 16:16:49,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-06 16:16:49,659 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:16:49,659 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-06 16:16:49,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-06 16:16:49,660 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2021-10-06 16:16:49,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:16:49,661 INFO L82 PathProgramCache]: Analyzing trace with hash 15232397, now seen corresponding path program 1 times [2021-10-06 16:16:49,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:16:49,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046399013] [2021-10-06 16:16:49,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:16:49,663 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:16:49,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:16:49,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:16:49,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:16:49,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046399013] [2021-10-06 16:16:49,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046399013] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:16:49,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:16:49,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-06 16:16:49,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556650787] [2021-10-06 16:16:49,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 16:16:49,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:16:49,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 16:16:49,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:16:49,757 INFO L87 Difference]: Start difference. First operand 1285 states and 4741 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:16:49,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:16:49,816 INFO L93 Difference]: Finished difference Result 1716 states and 5706 transitions. [2021-10-06 16:16:49,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 16:16:49,817 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 4 [2021-10-06 16:16:49,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:16:49,839 INFO L225 Difference]: With dead ends: 1716 [2021-10-06 16:16:49,839 INFO L226 Difference]: Without dead ends: 1716 [2021-10-06 16:16:49,840 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:16:49,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2021-10-06 16:16:49,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1285. [2021-10-06 16:16:49,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1285 states, 1109 states have (on average 4.14697926059513) internal successors, (4599), 1284 states have internal predecessors, (4599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:16:49,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1285 states to 1285 states and 4599 transitions. [2021-10-06 16:16:49,911 INFO L78 Accepts]: Start accepts. Automaton has 1285 states and 4599 transitions. Word has length 4 [2021-10-06 16:16:49,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:16:49,912 INFO L470 AbstractCegarLoop]: Abstraction has 1285 states and 4599 transitions. [2021-10-06 16:16:49,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:16:49,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1285 states and 4599 transitions. [2021-10-06 16:16:49,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-06 16:16:49,913 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:16:49,913 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-06 16:16:49,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-06 16:16:49,914 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2021-10-06 16:16:49,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:16:49,914 INFO L82 PathProgramCache]: Analyzing trace with hash 15232467, now seen corresponding path program 1 times [2021-10-06 16:16:49,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:16:49,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814240198] [2021-10-06 16:16:49,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:16:49,915 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:16:49,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:16:49,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:16:49,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:16:49,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814240198] [2021-10-06 16:16:49,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814240198] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:16:49,958 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:16:49,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-06 16:16:49,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789399904] [2021-10-06 16:16:49,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 16:16:49,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:16:49,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 16:16:49,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:16:49,960 INFO L87 Difference]: Start difference. First operand 1285 states and 4599 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:16:50,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:16:50,018 INFO L93 Difference]: Finished difference Result 1574 states and 5219 transitions. [2021-10-06 16:16:50,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 16:16:50,018 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 4 [2021-10-06 16:16:50,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:16:50,034 INFO L225 Difference]: With dead ends: 1574 [2021-10-06 16:16:50,035 INFO L226 Difference]: Without dead ends: 1574 [2021-10-06 16:16:50,035 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:16:50,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1574 states. [2021-10-06 16:16:50,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 1285. [2021-10-06 16:16:50,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1285 states, 1109 states have (on average 4.018935978358882) internal successors, (4457), 1284 states have internal predecessors, (4457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:16:50,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1285 states to 1285 states and 4457 transitions. [2021-10-06 16:16:50,092 INFO L78 Accepts]: Start accepts. Automaton has 1285 states and 4457 transitions. Word has length 4 [2021-10-06 16:16:50,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:16:50,092 INFO L470 AbstractCegarLoop]: Abstraction has 1285 states and 4457 transitions. [2021-10-06 16:16:50,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:16:50,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1285 states and 4457 transitions. [2021-10-06 16:16:50,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 16:16:50,093 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:16:50,094 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 16:16:50,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-06 16:16:50,094 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2021-10-06 16:16:50,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:16:50,095 INFO L82 PathProgramCache]: Analyzing trace with hash 472207739, now seen corresponding path program 1 times [2021-10-06 16:16:50,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:16:50,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926918196] [2021-10-06 16:16:50,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:16:50,096 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:16:50,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:16:50,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:16:50,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:16:50,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926918196] [2021-10-06 16:16:50,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926918196] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:16:50,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:16:50,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-06 16:16:50,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708460488] [2021-10-06 16:16:50,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 16:16:50,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:16:50,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 16:16:50,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:16:50,136 INFO L87 Difference]: Start difference. First operand 1285 states and 4457 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:16:50,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:16:50,162 INFO L93 Difference]: Finished difference Result 1143 states and 3970 transitions. [2021-10-06 16:16:50,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 16:16:50,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-06 16:16:50,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:16:50,174 INFO L225 Difference]: With dead ends: 1143 [2021-10-06 16:16:50,174 INFO L226 Difference]: Without dead ends: 1143 [2021-10-06 16:16:50,174 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:16:50,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2021-10-06 16:16:50,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 1143. [2021-10-06 16:16:50,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 1002 states have (on average 3.9620758483033933) internal successors, (3970), 1142 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:16:50,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 3970 transitions. [2021-10-06 16:16:50,224 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 3970 transitions. Word has length 5 [2021-10-06 16:16:50,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:16:50,224 INFO L470 AbstractCegarLoop]: Abstraction has 1143 states and 3970 transitions. [2021-10-06 16:16:50,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:16:50,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 3970 transitions. [2021-10-06 16:16:50,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 16:16:50,225 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:16:50,225 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 16:16:50,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-06 16:16:50,226 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2021-10-06 16:16:50,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:16:50,226 INFO L82 PathProgramCache]: Analyzing trace with hash 472207644, now seen corresponding path program 1 times [2021-10-06 16:16:50,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:16:50,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284528877] [2021-10-06 16:16:50,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:16:50,227 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:16:50,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-06 16:16:50,294 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-06 16:16:50,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-06 16:16:50,340 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-06 16:16:50,341 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-06 16:16:50,342 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:16:50,344 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:16:50,344 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:16:50,344 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:16:50,344 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:16:50,345 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:16:50,345 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:16:50,345 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:16:50,345 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:16:50,346 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:16:50,346 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:16:50,346 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:16:50,346 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:16:50,347 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:16:50,347 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:16:50,347 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:16:50,347 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:16:50,348 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-06 16:16:50,348 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-06 16:16:50,348 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-06 16:16:50,348 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:16:50,348 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:16:50,349 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:16:50,349 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:16:50,349 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:16:50,349 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:16:50,350 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:16:50,350 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:16:50,350 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:16:50,350 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:16:50,351 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:16:50,351 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:16:50,351 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:16:50,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-06 16:16:50,359 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-06 16:16:50,359 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-06 16:16:50,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 04:16:50 BasicIcfg [2021-10-06 16:16:50,382 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-06 16:16:50,382 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-06 16:16:50,383 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-06 16:16:50,383 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-06 16:16:50,383 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 04:16:43" (3/4) ... [2021-10-06 16:16:50,385 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-06 16:16:50,429 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/weaver/mult-flipped-dist.wvr.c-witness.graphml [2021-10-06 16:16:50,429 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-06 16:16:50,431 INFO L168 Benchmark]: Toolchain (without parser) took 8303.57 ms. Allocated memory was 151.0 MB in the beginning and 190.8 MB in the end (delta: 39.8 MB). Free memory was 126.9 MB in the beginning and 152.2 MB in the end (delta: -25.4 MB). Peak memory consumption was 15.1 MB. Max. memory is 8.0 GB. [2021-10-06 16:16:50,432 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 151.0 MB. Free memory is still 121.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 16:16:50,432 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.69 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 116.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-06 16:16:50,433 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.97 ms. Allocated memory is still 151.0 MB. Free memory was 116.4 MB in the beginning and 114.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 16:16:50,434 INFO L168 Benchmark]: Boogie Preprocessor took 66.40 ms. Allocated memory is still 151.0 MB. Free memory was 114.7 MB in the beginning and 113.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-06 16:16:50,434 INFO L168 Benchmark]: RCFGBuilder took 533.84 ms. Allocated memory is still 151.0 MB. Free memory was 113.5 MB in the beginning and 100.3 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-10-06 16:16:50,435 INFO L168 Benchmark]: TraceAbstraction took 7271.04 ms. Allocated memory was 151.0 MB in the beginning and 190.8 MB in the end (delta: 39.8 MB). Free memory was 99.8 MB in the beginning and 154.3 MB in the end (delta: -54.5 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 16:16:50,435 INFO L168 Benchmark]: Witness Printer took 46.70 ms. Allocated memory is still 190.8 MB. Free memory was 154.3 MB in the beginning and 152.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 16:16:50,439 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 151.0 MB. Free memory is still 121.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 294.69 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 116.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 72.97 ms. Allocated memory is still 151.0 MB. Free memory was 116.4 MB in the beginning and 114.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 66.40 ms. Allocated memory is still 151.0 MB. Free memory was 114.7 MB in the beginning and 113.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 533.84 ms. Allocated memory is still 151.0 MB. Free memory was 113.5 MB in the beginning and 100.3 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7271.04 ms. Allocated memory was 151.0 MB in the beginning and 190.8 MB in the end (delta: 39.8 MB). Free memory was 99.8 MB in the beginning and 154.3 MB in the end (delta: -54.5 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 46.70 ms. Allocated memory is still 190.8 MB. Free memory was 154.3 MB in the beginning and 152.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5501.5ms, 132 PlacesBefore, 48 PlacesAfterwards, 129 TransitionsBefore, 41 TransitionsAfterwards, 3302 CoEnabledTransitionPairs, 6 FixpointIterations, 47 TrivialSequentialCompositions, 62 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 6 ConcurrentYvCompositions, 4 ChoiceCompositions, 123 TotalNumberOfCompositions, 3531 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3531, positive: 3531, positive conditional: 0, positive unconditional: 3531, 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: 1853, positive: 1853, positive conditional: 0, positive unconditional: 1853, 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: 1853, positive: 1853, positive conditional: 0, positive unconditional: 1853, 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: 3531, positive: 1678, positive conditional: 0, positive unconditional: 1678, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1853, unknown conditional: 0, unknown unconditional: 1853] , Statistics on independence cache: Total cache size (in pairs): 130, Positive cache size: 130, Positive conditional cache size: 0, Positive unconditional cache size: 130, 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 - CounterExampleResult [Line: 43]: integer overflow possible integer overflow possible We found a FailurePath: [L38] 0 int x_1, x_2, x_3, a, b, c; [L60] 0 pthread_t t1, t2, t3; [L63] 0 a = __VERIFIER_nondet_int() [L64] 0 b = __VERIFIER_nondet_int() [L65] 0 c = __VERIFIER_nondet_int() [L67] FCALL, FORK 0 pthread_create(&t1, NULL, thread1, NULL) VAL [a=1073741824, b=0, c=2, x_1=0, x_2=0, x_3=0] [L42] 1 int i=0; VAL [a=1073741824, b=0, c=2, i=0, x_1=0, x_2=0, x_3=0] [L42] COND TRUE 1 i