/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/weaver/popl20-bad/threaded-sum-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 16:26:21,343 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 16:26:21,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 16:26:21,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-06 16:26:21,392 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-06 16:26:21,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-06 16:26:21,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-06 16:26:21,396 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-06 16:26:21,397 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-06 16:26:21,398 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-06 16:26:21,400 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-06 16:26:21,402 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-06 16:26:21,404 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-06 16:26:21,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-06 16:26:21,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-06 16:26:21,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-06 16:26:21,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-06 16:26:21,455 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-06 16:26:21,456 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-06 16:26:21,457 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-06 16:26:21,460 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 16:26:21,526 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 16:26:21,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 16:26:21,527 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 16:26:21,527 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 16:26:21,529 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 16:26:21,530 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 16:26:21,530 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 16:26:21,530 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 16:26:21,530 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 16:26:21,531 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 16:26:21,533 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 16:26:21,533 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 16:26:21,533 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 16:26:21,534 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-06 16:26:21,535 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 16:26:21,535 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-06 16:26:21,535 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-06 16:26:21,536 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 16:26:21,536 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-06 16:26:21,536 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 16:26:21,536 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-06 16:26:21,536 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 16:26:21,537 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 16:26:21,537 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 16:26:21,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 16:26:21,537 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 16:26:21,538 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 16:26:21,538 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-06 16:26:21,538 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-06 16:26:21,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-06 16:26:21,538 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-06 16:26:21,539 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 16:26:21,539 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 16:26:21,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 16:26:21,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 16:26:21,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 16:26:21,981 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 16:26:21,984 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 16:26:21,985 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad/threaded-sum-2.wvr.c [2021-10-06 16:26:22,060 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aad330afe/e74de4d0ae42499ebb24bde4f7d8f412/FLAG9a9dd29dc [2021-10-06 16:26:22,732 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 16:26:22,733 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad/threaded-sum-2.wvr.c [2021-10-06 16:26:22,742 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aad330afe/e74de4d0ae42499ebb24bde4f7d8f412/FLAG9a9dd29dc [2021-10-06 16:26:23,097 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aad330afe/e74de4d0ae42499ebb24bde4f7d8f412 [2021-10-06 16:26:23,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 16:26:23,112 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-06 16:26:23,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 16:26:23,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 16:26:23,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 16:26:23,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 04:26:23" (1/1) ... [2021-10-06 16:26:23,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a10fa99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:26:23, skipping insertion in model container [2021-10-06 16:26:23,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 04:26:23" (1/1) ... [2021-10-06 16:26:23,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 16:26:23,163 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 16:26:23,398 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad/threaded-sum-2.wvr.c[2084,2097] [2021-10-06 16:26:23,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 16:26:23,412 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 16:26:23,437 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad/threaded-sum-2.wvr.c[2084,2097] [2021-10-06 16:26:23,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 16:26:23,459 INFO L208 MainTranslator]: Completed translation [2021-10-06 16:26:23,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:26:23 WrapperNode [2021-10-06 16:26:23,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 16:26:23,461 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 16:26:23,461 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 16:26:23,462 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 16:26:23,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:26:23" (1/1) ... [2021-10-06 16:26:23,486 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:26:23" (1/1) ... [2021-10-06 16:26:23,515 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 16:26:23,516 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 16:26:23,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 16:26:23,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 16:26:23,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:26:23" (1/1) ... [2021-10-06 16:26:23,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:26:23" (1/1) ... [2021-10-06 16:26:23,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:26:23" (1/1) ... [2021-10-06 16:26:23,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:26:23" (1/1) ... [2021-10-06 16:26:23,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:26:23" (1/1) ... [2021-10-06 16:26:23,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:26:23" (1/1) ... [2021-10-06 16:26:23,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:26:23" (1/1) ... [2021-10-06 16:26:23,549 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 16:26:23,550 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 16:26:23,550 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 16:26:23,550 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 16:26:23,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:26:23" (1/1) ... [2021-10-06 16:26:23,562 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 16:26:23,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:26:23,596 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 16:26:23,621 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 16:26:23,671 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 16:26:23,672 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 16:26:23,672 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 16:26:23,672 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 16:26:23,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-06 16:26:23,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 16:26:23,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-06 16:26:23,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-06 16:26:23,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-06 16:26:23,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 16:26:23,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 16:26:23,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-06 16:26:23,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 16:26:23,677 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 16:26:24,246 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 16:26:24,247 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-06 16:26:24,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 04:26:24 BoogieIcfgContainer [2021-10-06 16:26:24,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 16:26:24,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 16:26:24,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 16:26:24,257 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 16:26:24,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 04:26:23" (1/3) ... [2021-10-06 16:26:24,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13902baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 04:26:24, skipping insertion in model container [2021-10-06 16:26:24,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:26:23" (2/3) ... [2021-10-06 16:26:24,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13902baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 04:26:24, skipping insertion in model container [2021-10-06 16:26:24,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 04:26:24" (3/3) ... [2021-10-06 16:26:24,261 INFO L111 eAbstractionObserver]: Analyzing ICFG threaded-sum-2.wvr.c [2021-10-06 16:26:24,268 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-06 16:26:24,268 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 16:26:24,269 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-06 16:26:24,269 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 16:26:24,312 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:26:24,312 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:26:24,313 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:26:24,313 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:26:24,313 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:26:24,313 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:26:24,314 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:26:24,314 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:26:24,314 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:26:24,315 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:26:24,315 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:26:24,315 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:26:24,316 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:26:24,316 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:26:24,316 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:26:24,316 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:26:24,323 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:26:24,323 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:26:24,323 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:26:24,324 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:26:24,324 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:26:24,324 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:26:24,325 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:26:24,325 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:26:24,325 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:26:24,326 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:26:24,327 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:26:24,328 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:26:24,337 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:26:24,337 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:26:24,338 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:26:24,340 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:26:24,344 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:26:24,345 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:26:24,346 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:26:24,346 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:26:24,375 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-06 16:26:24,469 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 16:26:24,487 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 16:26:24,488 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-10-06 16:26:24,519 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 16:26:24,541 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 86 transitions, 188 flow [2021-10-06 16:26:24,546 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 86 transitions, 188 flow [2021-10-06 16:26:24,549 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 86 transitions, 188 flow [2021-10-06 16:26:24,630 INFO L129 PetriNetUnfolder]: 7/84 cut-off events. [2021-10-06 16:26:24,631 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-06 16:26:24,637 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 84 events. 7/84 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 68 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 51. Up to 3 conditions per place. [2021-10-06 16:26:24,644 INFO L116 LiptonReduction]: Number of co-enabled transitions 538 [2021-10-06 16:26:28,610 INFO L131 LiptonReduction]: Checked pairs total: 1626 [2021-10-06 16:26:28,610 INFO L133 LiptonReduction]: Total number of compositions: 84 [2021-10-06 16:26:28,619 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 28 transitions, 72 flow [2021-10-06 16:26:28,642 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 131 states, 105 states have (on average 3.066666666666667) internal successors, (322), 130 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:28,646 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 105 states have (on average 3.066666666666667) internal successors, (322), 130 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:28,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 16:26:28,653 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:26:28,654 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 16:26:28,655 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:26:28,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:26:28,662 INFO L82 PathProgramCache]: Analyzing trace with hash 377623, now seen corresponding path program 1 times [2021-10-06 16:26:28,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:26:28,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862363287] [2021-10-06 16:26:28,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:26:28,676 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:26:28,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:26:28,889 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 16:26:28,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:26:28,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862363287] [2021-10-06 16:26:28,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862363287] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:26:28,892 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:26:28,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-06 16:26:28,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400346125] [2021-10-06 16:26:28,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 16:26:28,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:26:28,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 16:26:28,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:26:28,932 INFO L87 Difference]: Start difference. First operand has 131 states, 105 states have (on average 3.066666666666667) internal successors, (322), 130 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:28,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:26:28,997 INFO L93 Difference]: Finished difference Result 87 states and 213 transitions. [2021-10-06 16:26:28,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 16:26:29,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-06 16:26:29,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:26:29,018 INFO L225 Difference]: With dead ends: 87 [2021-10-06 16:26:29,019 INFO L226 Difference]: Without dead ends: 87 [2021-10-06 16:26:29,023 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:26:29,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-10-06 16:26:29,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2021-10-06 16:26:29,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 74 states have (on average 2.8783783783783785) internal successors, (213), 86 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:29,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 213 transitions. [2021-10-06 16:26:29,092 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 213 transitions. Word has length 3 [2021-10-06 16:26:29,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:26:29,095 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 213 transitions. [2021-10-06 16:26:29,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:29,095 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 213 transitions. [2021-10-06 16:26:29,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-06 16:26:29,097 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:26:29,098 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-06 16:26:29,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-06 16:26:29,108 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:26:29,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:26:29,109 INFO L82 PathProgramCache]: Analyzing trace with hash 11704217, now seen corresponding path program 1 times [2021-10-06 16:26:29,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:26:29,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155379361] [2021-10-06 16:26:29,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:26:29,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:26:29,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:26:29,221 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 16:26:29,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:26:29,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155379361] [2021-10-06 16:26:29,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155379361] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:26:29,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:26:29,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-06 16:26:29,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502570370] [2021-10-06 16:26:29,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 16:26:29,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:26:29,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 16:26:29,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:26:29,231 INFO L87 Difference]: Start difference. First operand 87 states and 213 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 16:26:29,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:26:29,245 INFO L93 Difference]: Finished difference Result 144 states and 356 transitions. [2021-10-06 16:26:29,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 16:26:29,245 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 16:26:29,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:26:29,248 INFO L225 Difference]: With dead ends: 144 [2021-10-06 16:26:29,248 INFO L226 Difference]: Without dead ends: 144 [2021-10-06 16:26:29,249 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:26:29,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-10-06 16:26:29,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 115. [2021-10-06 16:26:29,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 102 states have (on average 3.0294117647058822) internal successors, (309), 114 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:29,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 309 transitions. [2021-10-06 16:26:29,270 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 309 transitions. Word has length 4 [2021-10-06 16:26:29,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:26:29,270 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 309 transitions. [2021-10-06 16:26:29,274 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 16:26:29,274 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 309 transitions. [2021-10-06 16:26:29,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 16:26:29,275 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:26:29,275 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 16:26:29,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-06 16:26:29,276 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:26:29,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:26:29,276 INFO L82 PathProgramCache]: Analyzing trace with hash 362916719, now seen corresponding path program 1 times [2021-10-06 16:26:29,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:26:29,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276302980] [2021-10-06 16:26:29,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:26:29,277 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:26:29,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:26:29,342 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 16:26:29,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:26:29,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276302980] [2021-10-06 16:26:29,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276302980] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:26:29,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:26:29,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-06 16:26:29,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495226778] [2021-10-06 16:26:29,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 16:26:29,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:26:29,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 16:26:29,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:26:29,346 INFO L87 Difference]: Start difference. First operand 115 states and 309 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:29,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:26:29,381 INFO L93 Difference]: Finished difference Result 139 states and 350 transitions. [2021-10-06 16:26:29,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 16:26:29,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-06 16:26:29,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:26:29,384 INFO L225 Difference]: With dead ends: 139 [2021-10-06 16:26:29,384 INFO L226 Difference]: Without dead ends: 139 [2021-10-06 16:26:29,385 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:26:29,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-10-06 16:26:29,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 125. [2021-10-06 16:26:29,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 112 states have (on average 2.9464285714285716) internal successors, (330), 124 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:29,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 330 transitions. [2021-10-06 16:26:29,399 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 330 transitions. Word has length 5 [2021-10-06 16:26:29,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:26:29,399 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 330 transitions. [2021-10-06 16:26:29,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:29,400 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 330 transitions. [2021-10-06 16:26:29,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 16:26:29,400 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:26:29,400 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 16:26:29,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-06 16:26:29,401 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:26:29,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:26:29,402 INFO L82 PathProgramCache]: Analyzing trace with hash 362916720, now seen corresponding path program 1 times [2021-10-06 16:26:29,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:26:29,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505098702] [2021-10-06 16:26:29,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:26:29,402 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:26:29,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-06 16:26:29,421 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-06 16:26:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-06 16:26:29,484 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-06 16:26:29,485 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-06 16:26:29,486 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:26:29,488 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:26:29,489 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:26:29,489 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:26:29,491 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:26:29,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:26:29,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:26:29,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:26:29,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:26:29,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:26:29,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:26:29,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-06 16:26:29,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-06 16:26:29,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:26:29,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:26:29,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:26:29,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:26:29,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:26:29,495 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:26:29,495 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:26:29,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-06 16:26:29,504 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-06 16:26:29,504 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-06 16:26:29,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 04:26:29 BasicIcfg [2021-10-06 16:26:29,541 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-06 16:26:29,543 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-06 16:26:29,543 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-06 16:26:29,543 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-06 16:26:29,544 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 04:26:24" (3/4) ... [2021-10-06 16:26:29,546 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-06 16:26:29,608 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/weaver/popl20-bad/threaded-sum-2.wvr.c-witness.graphml [2021-10-06 16:26:29,608 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-06 16:26:29,610 INFO L168 Benchmark]: Toolchain (without parser) took 6504.84 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 127.5 MB in the beginning and 99.2 MB in the end (delta: 28.2 MB). Peak memory consumption was 59.7 MB. Max. memory is 8.0 GB. [2021-10-06 16:26:29,611 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 152.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 16:26:29,612 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.84 ms. Allocated memory is still 152.0 MB. Free memory was 127.1 MB in the beginning and 117.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-06 16:26:29,612 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.82 ms. Allocated memory is still 152.0 MB. Free memory was 117.1 MB in the beginning and 115.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-06 16:26:29,613 INFO L168 Benchmark]: Boogie Preprocessor took 33.06 ms. Allocated memory is still 152.0 MB. Free memory was 115.5 MB in the beginning and 114.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-06 16:26:29,614 INFO L168 Benchmark]: RCFGBuilder took 700.47 ms. Allocated memory is still 152.0 MB. Free memory was 114.4 MB in the beginning and 130.6 MB in the end (delta: -16.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. [2021-10-06 16:26:29,614 INFO L168 Benchmark]: TraceAbstraction took 5288.91 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 130.1 MB in the beginning and 101.9 MB in the end (delta: 28.3 MB). Peak memory consumption was 58.1 MB. Max. memory is 8.0 GB. [2021-10-06 16:26:29,615 INFO L168 Benchmark]: Witness Printer took 65.81 ms. Allocated memory is still 182.5 MB. Free memory was 101.9 MB in the beginning and 99.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-10-06 16:26:29,619 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 152.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 344.84 ms. Allocated memory is still 152.0 MB. Free memory was 127.1 MB in the beginning and 117.1 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 53.82 ms. Allocated memory is still 152.0 MB. Free memory was 117.1 MB in the beginning and 115.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.06 ms. Allocated memory is still 152.0 MB. Free memory was 115.5 MB in the beginning and 114.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 700.47 ms. Allocated memory is still 152.0 MB. Free memory was 114.4 MB in the beginning and 130.6 MB in the end (delta: -16.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5288.91 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 130.1 MB in the beginning and 101.9 MB in the end (delta: 28.3 MB). Peak memory consumption was 58.1 MB. Max. memory is 8.0 GB. * Witness Printer took 65.81 ms. Allocated memory is still 182.5 MB. Free memory was 101.9 MB in the beginning and 99.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4064.2ms, 86 PlacesBefore, 32 PlacesAfterwards, 86 TransitionsBefore, 28 TransitionsAfterwards, 538 CoEnabledTransitionPairs, 7 FixpointIterations, 46 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 84 TotalNumberOfCompositions, 1626 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1070, positive: 1003, positive conditional: 0, positive unconditional: 1003, negative: 67, negative conditional: 0, negative unconditional: 67, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 353, positive: 341, positive conditional: 0, positive unconditional: 341, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 353, positive: 327, positive conditional: 0, positive unconditional: 327, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 26, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 82, positive: 33, positive conditional: 0, positive unconditional: 33, negative: 49, negative conditional: 0, negative unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1070, positive: 662, positive conditional: 0, positive unconditional: 662, negative: 55, negative conditional: 0, negative unconditional: 55, unknown: 353, unknown conditional: 0, unknown unconditional: 353] , Statistics on independence cache: Total cache size (in pairs): 81, Positive cache size: 76, Positive conditional cache size: 0, Positive unconditional cache size: 76, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - 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: 54]: integer overflow possible integer overflow possible We found a FailurePath: [L38] 0 int s, t, m, T, S; [L63] 0 pthread_t t1, t2; [L65] 0 s = __VERIFIER_nondet_int() [L66] 0 t = __VERIFIER_nondet_int() [L67] 0 S = s [L68] 0 T = t [L35] COND FALSE 0 !(!cond) [L73] FCALL, FORK 0 pthread_create(&t1, NULL, thread1, NULL) VAL [m=0, s=2147483647, S=2147483647, t=1, T=1] [L74] FCALL, FORK 0 pthread_create(&t2, NULL, thread2, NULL) VAL [m=0, S=2147483647, s=2147483647, T=1, t=1] [L52] COND TRUE 2 t > 0 [L54] 2 s++ VAL [m=0, s=2147483647, S=2147483647, s++=2147483647, t=1, T=1] - UnprovableResult [Line: 44]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 44]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 45]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 45]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 54]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 57]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 57]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 78]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 78]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 74]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 73]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 100 locations, 20 error locations. Started 1 CEGAR loops. OverallTime: 5033.9ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 13.4ms, AutomataDifference: 179.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4154.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 51 SDtfs, 36 SDslu, 25 SDs, 0 SdLazy, 35 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 46.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=131occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 83.1ms AutomataMinimizationTime, 3 MinimizatonAttempts, 43 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 14.7ms SsaConstructionTime, 102.7ms SatisfiabilityAnalysisTime, 181.9ms InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 43 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-06 16:26:29,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...