/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/figure3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 16:21:38,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 16:21:38,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 16:21:38,397 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-06 16:21:38,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-06 16:21:38,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-06 16:21:38,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-06 16:21:38,483 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 16:21:38,530 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 16:21:38,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 16:21:38,531 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 16:21:38,531 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 16:21:38,535 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 16:21:38,535 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 16:21:38,535 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 16:21:38,535 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 16:21:38,535 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 16:21:38,536 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 16:21:38,537 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 16:21:38,537 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 16:21:38,537 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 16:21:38,537 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-06 16:21:38,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 16:21:38,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-06 16:21:38,538 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-06 16:21:38,538 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 16:21:38,538 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-06 16:21:38,538 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 16:21:38,539 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-06 16:21:38,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 16:21:38,539 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 16:21:38,539 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 16:21:38,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 16:21:38,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 16:21:38,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 16:21:38,540 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-06 16:21:38,540 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-06 16:21:38,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-06 16:21:38,540 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-06 16:21:38,541 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 16:21:38,541 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 16:21:38,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 16:21:38,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 16:21:38,980 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 16:21:38,981 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 16:21:38,982 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 16:21:38,983 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20/figure3.wvr.c [2021-10-06 16:21:39,078 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23d08ad4f/ec1eb0531fb64ef8944e1fd46151fd1f/FLAG8d4cd7acf [2021-10-06 16:21:39,592 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 16:21:39,593 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20/figure3.wvr.c [2021-10-06 16:21:39,601 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23d08ad4f/ec1eb0531fb64ef8944e1fd46151fd1f/FLAG8d4cd7acf [2021-10-06 16:21:39,985 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23d08ad4f/ec1eb0531fb64ef8944e1fd46151fd1f [2021-10-06 16:21:39,988 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 16:21:39,996 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-06 16:21:39,998 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 16:21:39,998 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 16:21:40,003 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 16:21:40,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 04:21:39" (1/1) ... [2021-10-06 16:21:40,006 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c75aaf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:21:40, skipping insertion in model container [2021-10-06 16:21:40,006 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 04:21:39" (1/1) ... [2021-10-06 16:21:40,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 16:21:40,031 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 16:21:40,203 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/figure3.wvr.c[1970,1983] [2021-10-06 16:21:40,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 16:21:40,214 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 16:21:40,236 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/figure3.wvr.c[1970,1983] [2021-10-06 16:21:40,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 16:21:40,253 INFO L208 MainTranslator]: Completed translation [2021-10-06 16:21:40,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:21:40 WrapperNode [2021-10-06 16:21:40,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 16:21:40,255 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 16:21:40,256 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 16:21:40,256 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 16:21:40,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:21:40" (1/1) ... [2021-10-06 16:21:40,273 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:21:40" (1/1) ... [2021-10-06 16:21:40,297 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 16:21:40,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 16:21:40,298 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 16:21:40,298 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 16:21:40,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:21:40" (1/1) ... [2021-10-06 16:21:40,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:21:40" (1/1) ... [2021-10-06 16:21:40,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:21:40" (1/1) ... [2021-10-06 16:21:40,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:21:40" (1/1) ... [2021-10-06 16:21:40,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:21:40" (1/1) ... [2021-10-06 16:21:40,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:21:40" (1/1) ... [2021-10-06 16:21:40,322 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:21:40" (1/1) ... [2021-10-06 16:21:40,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 16:21:40,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 16:21:40,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 16:21:40,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 16:21:40,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:21:40" (1/1) ... [2021-10-06 16:21:40,336 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 16:21:40,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:21:40,369 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 16:21:40,402 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 16:21:40,460 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 16:21:40,460 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 16:21:40,460 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 16:21:40,460 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 16:21:40,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-06 16:21:40,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 16:21:40,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-06 16:21:40,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-06 16:21:40,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-06 16:21:40,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 16:21:40,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 16:21:40,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-06 16:21:40,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 16:21:40,466 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 16:21:40,940 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 16:21:40,940 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-06 16:21:40,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 04:21:40 BoogieIcfgContainer [2021-10-06 16:21:40,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 16:21:40,946 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 16:21:40,946 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 16:21:40,952 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 16:21:40,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 04:21:39" (1/3) ... [2021-10-06 16:21:40,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a0ce5f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 04:21:40, skipping insertion in model container [2021-10-06 16:21:40,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:21:40" (2/3) ... [2021-10-06 16:21:40,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a0ce5f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 04:21:40, skipping insertion in model container [2021-10-06 16:21:40,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 04:21:40" (3/3) ... [2021-10-06 16:21:40,964 INFO L111 eAbstractionObserver]: Analyzing ICFG figure3.wvr.c [2021-10-06 16:21:40,973 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-06 16:21:40,973 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 16:21:40,973 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-10-06 16:21:40,974 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 16:21:41,036 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,037 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,037 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,038 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,038 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,038 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,042 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,043 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,043 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,043 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,044 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,044 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,045 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,046 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,046 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,048 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,048 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,049 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,049 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,049 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,050 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,050 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,050 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,051 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,052 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,053 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,053 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,054 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,055 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,055 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,056 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,056 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,056 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,056 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,057 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,057 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,058 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,058 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,061 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,104 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,105 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,105 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,108 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,108 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,108 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,109 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,109 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,109 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,114 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,114 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,115 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,115 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,116 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,116 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,116 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,117 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,117 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,117 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,117 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,118 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,131 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,132 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,132 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,132 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,133 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,135 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,141 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,141 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,145 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,145 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:21:41,176 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-06 16:21:41,239 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 16:21:41,247 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 16:21:41,248 INFO L340 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2021-10-06 16:21:41,265 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 16:21:41,277 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 89 transitions, 194 flow [2021-10-06 16:21:41,280 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 89 transitions, 194 flow [2021-10-06 16:21:41,283 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 90 places, 89 transitions, 194 flow [2021-10-06 16:21:41,330 INFO L129 PetriNetUnfolder]: 6/87 cut-off events. [2021-10-06 16:21:41,330 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-06 16:21:41,336 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 87 events. 6/87 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 99 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2021-10-06 16:21:41,339 INFO L116 LiptonReduction]: Number of co-enabled transitions 996 [2021-10-06 16:21:45,372 INFO L131 LiptonReduction]: Checked pairs total: 1200 [2021-10-06 16:21:45,372 INFO L133 LiptonReduction]: Total number of compositions: 86 [2021-10-06 16:21:45,382 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 25 transitions, 66 flow [2021-10-06 16:21:45,409 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 124 states, 100 states have (on average 2.94) internal successors, (294), 123 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:45,411 INFO L276 IsEmpty]: Start isEmpty. Operand has 124 states, 100 states have (on average 2.94) internal successors, (294), 123 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:45,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-06 16:21:45,416 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:21:45,417 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-06 16:21:45,418 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-06 16:21:45,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:21:45,423 INFO L82 PathProgramCache]: Analyzing trace with hash 11517118, now seen corresponding path program 1 times [2021-10-06 16:21:45,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:21:45,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278159523] [2021-10-06 16:21:45,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:21:45,440 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:21:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:21:45,717 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 16:21:45,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:21:45,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278159523] [2021-10-06 16:21:45,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278159523] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:21:45,719 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:21:45,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-06 16:21:45,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718199503] [2021-10-06 16:21:45,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 16:21:45,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:21:45,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 16:21:45,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:21:45,745 INFO L87 Difference]: Start difference. First operand has 124 states, 100 states have (on average 2.94) internal successors, (294), 123 states have internal predecessors, (294), 0 states have call successors, (0), 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), 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 16:21:45,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:21:45,800 INFO L93 Difference]: Finished difference Result 142 states and 340 transitions. [2021-10-06 16:21:45,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 16:21:45,802 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 16:21:45,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:21:45,816 INFO L225 Difference]: With dead ends: 142 [2021-10-06 16:21:45,816 INFO L226 Difference]: Without dead ends: 132 [2021-10-06 16:21:45,817 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:21:45,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-06 16:21:45,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2021-10-06 16:21:45,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 106 states have (on average 3.0283018867924527) internal successors, (321), 129 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:45,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 321 transitions. [2021-10-06 16:21:45,870 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 321 transitions. Word has length 4 [2021-10-06 16:21:45,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:21:45,871 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 321 transitions. [2021-10-06 16:21:45,872 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 16:21:45,872 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 321 transitions. [2021-10-06 16:21:45,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-06 16:21:45,872 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:21:45,873 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-06 16:21:45,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-06 16:21:45,873 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-06 16:21:45,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:21:45,874 INFO L82 PathProgramCache]: Analyzing trace with hash 11517184, now seen corresponding path program 1 times [2021-10-06 16:21:45,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:21:45,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150846734] [2021-10-06 16:21:45,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:21:45,875 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:21:45,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:21:45,914 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 16:21:45,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:21:45,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150846734] [2021-10-06 16:21:45,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150846734] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:21:45,915 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:21:45,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-06 16:21:45,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770777898] [2021-10-06 16:21:45,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 16:21:45,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:21:45,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 16:21:45,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:21:45,919 INFO L87 Difference]: Start difference. First operand 130 states and 321 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:45,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:21:45,938 INFO L93 Difference]: Finished difference Result 132 states and 306 transitions. [2021-10-06 16:21:45,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 16:21:45,938 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 16:21:45,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:21:45,941 INFO L225 Difference]: With dead ends: 132 [2021-10-06 16:21:45,941 INFO L226 Difference]: Without dead ends: 132 [2021-10-06 16:21:45,942 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:21:45,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-06 16:21:45,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2021-10-06 16:21:45,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 106 states have (on average 2.8773584905660377) internal successors, (305), 129 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:45,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 305 transitions. [2021-10-06 16:21:45,970 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 305 transitions. Word has length 4 [2021-10-06 16:21:45,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:21:45,970 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 305 transitions. [2021-10-06 16:21:45,971 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 16:21:45,971 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 305 transitions. [2021-10-06 16:21:45,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-06 16:21:45,971 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:21:45,972 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-06 16:21:45,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-06 16:21:45,972 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-06 16:21:45,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:21:45,977 INFO L82 PathProgramCache]: Analyzing trace with hash 11517159, now seen corresponding path program 1 times [2021-10-06 16:21:45,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:21:45,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630597072] [2021-10-06 16:21:45,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:21:45,978 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:21:46,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:21:46,088 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 16:21:46,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:21:46,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630597072] [2021-10-06 16:21:46,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630597072] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:21:46,090 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:21:46,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-06 16:21:46,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924593053] [2021-10-06 16:21:46,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 16:21:46,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:21:46,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 16:21:46,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:21:46,092 INFO L87 Difference]: Start difference. First operand 130 states and 305 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 16:21:46,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:21:46,115 INFO L93 Difference]: Finished difference Result 124 states and 289 transitions. [2021-10-06 16:21:46,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 16:21:46,116 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 16:21:46,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:21:46,119 INFO L225 Difference]: With dead ends: 124 [2021-10-06 16:21:46,119 INFO L226 Difference]: Without dead ends: 124 [2021-10-06 16:21:46,120 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:21:46,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-06 16:21:46,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-10-06 16:21:46,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 100 states have (on average 2.89) internal successors, (289), 123 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:46,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 289 transitions. [2021-10-06 16:21:46,145 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 289 transitions. Word has length 4 [2021-10-06 16:21:46,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:21:46,146 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 289 transitions. [2021-10-06 16:21:46,146 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 16:21:46,146 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 289 transitions. [2021-10-06 16:21:46,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 16:21:46,148 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:21:46,148 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 16:21:46,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-06 16:21:46,149 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-06 16:21:46,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:21:46,150 INFO L82 PathProgramCache]: Analyzing trace with hash 357033012, now seen corresponding path program 1 times [2021-10-06 16:21:46,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:21:46,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174760486] [2021-10-06 16:21:46,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:21:46,151 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:21:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-06 16:21:46,194 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-06 16:21:46,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-06 16:21:46,257 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-06 16:21:46,257 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-06 16:21:46,259 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:21:46,261 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:21:46,261 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:21:46,261 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:21:46,262 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:21:46,262 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:21:46,262 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:21:46,262 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:21:46,263 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:21:46,263 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-06 16:21:46,263 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-06 16:21:46,263 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:21:46,264 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:21:46,264 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:21:46,264 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:21:46,264 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:21:46,265 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:21:46,265 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:21:46,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-06 16:21:46,273 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-06 16:21:46,273 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-06 16:21:46,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 04:21:46 BasicIcfg [2021-10-06 16:21:46,296 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-06 16:21:46,297 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-06 16:21:46,297 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-06 16:21:46,297 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-06 16:21:46,298 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 04:21:40" (3/4) ... [2021-10-06 16:21:46,300 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-06 16:21:46,342 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/weaver/popl20/figure3.wvr.c-witness.graphml [2021-10-06 16:21:46,342 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-06 16:21:46,345 INFO L168 Benchmark]: Toolchain (without parser) took 6353.35 ms. Allocated memory was 152.0 MB in the beginning and 200.3 MB in the end (delta: 48.2 MB). Free memory was 126.7 MB in the beginning and 129.7 MB in the end (delta: -3.0 MB). Peak memory consumption was 46.6 MB. Max. memory is 8.0 GB. [2021-10-06 16:21:46,345 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 152.0 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 16:21:46,346 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.85 ms. Allocated memory is still 152.0 MB. Free memory was 126.3 MB in the beginning and 116.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-10-06 16:21:46,347 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.81 ms. Allocated memory is still 152.0 MB. Free memory was 116.4 MB in the beginning and 114.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 16:21:46,347 INFO L168 Benchmark]: Boogie Preprocessor took 27.40 ms. Allocated memory is still 152.0 MB. Free memory was 114.8 MB in the beginning and 113.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-06 16:21:46,348 INFO L168 Benchmark]: RCFGBuilder took 618.12 ms. Allocated memory is still 152.0 MB. Free memory was 113.5 MB in the beginning and 99.9 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-10-06 16:21:46,349 INFO L168 Benchmark]: TraceAbstraction took 5350.08 ms. Allocated memory was 152.0 MB in the beginning and 200.3 MB in the end (delta: 48.2 MB). Free memory was 99.5 MB in the beginning and 132.3 MB in the end (delta: -32.9 MB). Peak memory consumption was 16.2 MB. Max. memory is 8.0 GB. [2021-10-06 16:21:46,349 INFO L168 Benchmark]: Witness Printer took 45.82 ms. Allocated memory is still 200.3 MB. Free memory was 131.8 MB in the beginning and 129.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 16:21:46,353 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 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 256.85 ms. Allocated memory is still 152.0 MB. Free memory was 126.3 MB in the beginning and 116.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 41.81 ms. Allocated memory is still 152.0 MB. Free memory was 116.4 MB in the beginning and 114.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 27.40 ms. Allocated memory is still 152.0 MB. Free memory was 114.8 MB in the beginning and 113.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 618.12 ms. Allocated memory is still 152.0 MB. Free memory was 113.5 MB in the beginning and 99.9 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5350.08 ms. Allocated memory was 152.0 MB in the beginning and 200.3 MB in the end (delta: 48.2 MB). Free memory was 99.5 MB in the beginning and 132.3 MB in the end (delta: -32.9 MB). Peak memory consumption was 16.2 MB. Max. memory is 8.0 GB. * Witness Printer took 45.82 ms. Allocated memory is still 200.3 MB. Free memory was 131.8 MB in the beginning and 129.7 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: 4091.8ms, 90 PlacesBefore, 30 PlacesAfterwards, 89 TransitionsBefore, 25 TransitionsAfterwards, 996 CoEnabledTransitionPairs, 6 FixpointIterations, 38 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 86 TotalNumberOfCompositions, 1200 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1142, positive: 1135, positive conditional: 0, positive unconditional: 1135, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 609, positive: 604, positive conditional: 0, positive unconditional: 604, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 609, positive: 601, positive conditional: 0, positive unconditional: 601, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 8, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 52, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1142, positive: 531, positive conditional: 0, positive unconditional: 531, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 609, unknown conditional: 0, unknown unconditional: 609] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 48, Positive conditional cache size: 0, Positive unconditional cache size: 48, 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: 42]: integer overflow possible integer overflow possible We found a FailurePath: [L38] 0 int N, counter, c; [L56] 0 pthread_t t1, t2; [L58] 0 N = __VERIFIER_nondet_int() [L59] 0 c = __VERIFIER_nondet_int() [L35] COND FALSE 0 !(!cond) [L64] FCALL, FORK 0 pthread_create(&t1, NULL, thread1, NULL) VAL [c=1073741824, counter=0, N=2] [L41] 1 int i=0; VAL [c=1073741824, counter=0, i=0, N=2] [L41] COND TRUE 1 i