/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/mainThreadTerminates.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-770125f [2021-05-22 01:23:20,448 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-22 01:23:20,451 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-22 01:23:20,494 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-22 01:23:20,494 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-22 01:23:20,499 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-22 01:23:20,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-22 01:23:20,507 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-22 01:23:20,509 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-22 01:23:20,513 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-22 01:23:20,514 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-22 01:23:20,515 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-22 01:23:20,515 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-22 01:23:20,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-22 01:23:20,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-22 01:23:20,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-22 01:23:20,523 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-22 01:23:20,524 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-22 01:23:20,526 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-22 01:23:20,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-22 01:23:20,535 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-22 01:23:20,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-22 01:23:20,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-22 01:23:20,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-22 01:23:20,544 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-22 01:23:20,555 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-22 01:23:20,555 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-22 01:23:20,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-22 01:23:20,559 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf [2021-05-22 01:23:20,596 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-22 01:23:20,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-22 01:23:20,597 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-22 01:23:20,597 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-22 01:23:20,599 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-22 01:23:20,599 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-22 01:23:20,600 INFO L138 SettingsManager]: * Use SBE=true [2021-05-22 01:23:20,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-22 01:23:20,600 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-22 01:23:20,600 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-22 01:23:20,601 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-22 01:23:20,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-22 01:23:20,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-22 01:23:20,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-22 01:23:20,602 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-22 01:23:20,602 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-22 01:23:20,602 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-22 01:23:20,602 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-22 01:23:20,602 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-22 01:23:20,603 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-22 01:23:20,603 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-22 01:23:20,607 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-22 01:23:20,607 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-22 01:23:20,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-22 01:23:20,608 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-22 01:23:20,609 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-22 01:23:20,609 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-22 01:23:20,609 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-22 01:23:20,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-22 01:23:20,609 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-22 01:23:20,609 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-22 01:23:20,610 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-05-22 01:23:20,610 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-22 01:23:20,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-22 01:23:20,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-22 01:23:20,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-22 01:23:20,892 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-22 01:23:20,892 INFO L275 PluginConnector]: CDTParser initialized [2021-05-22 01:23:20,893 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/mainThreadTerminates.c [2021-05-22 01:23:20,954 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d379fed2/837804baf8264f0fbcd22384e852c72d/FLAG7f1adaf60 [2021-05-22 01:23:21,430 INFO L306 CDTParser]: Found 1 translation units. [2021-05-22 01:23:21,431 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/mainThreadTerminates.c [2021-05-22 01:23:21,431 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-05-22 01:23:21,431 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-05-22 01:23:21,459 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d379fed2/837804baf8264f0fbcd22384e852c72d/FLAG7f1adaf60 [2021-05-22 01:23:21,925 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d379fed2/837804baf8264f0fbcd22384e852c72d [2021-05-22 01:23:21,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-22 01:23:21,933 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-22 01:23:21,935 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-22 01:23:21,935 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-22 01:23:21,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-22 01:23:21,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.05 01:23:21" (1/1) ... [2021-05-22 01:23:21,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68662d19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 01:23:21, skipping insertion in model container [2021-05-22 01:23:21,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.05 01:23:21" (1/1) ... [2021-05-22 01:23:21,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-22 01:23:21,956 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-22 01:23:22,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-22 01:23:22,123 INFO L203 MainTranslator]: Completed pre-run [2021-05-22 01:23:22,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-22 01:23:22,148 INFO L208 MainTranslator]: Completed translation [2021-05-22 01:23:22,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 01:23:22 WrapperNode [2021-05-22 01:23:22,151 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-22 01:23:22,153 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-22 01:23:22,153 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-22 01:23:22,153 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-22 01:23:22,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 01:23:22" (1/1) ... [2021-05-22 01:23:22,164 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 01:23:22" (1/1) ... [2021-05-22 01:23:22,177 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-22 01:23:22,178 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-22 01:23:22,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-22 01:23:22,179 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-22 01:23:22,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 01:23:22" (1/1) ... [2021-05-22 01:23:22,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 01:23:22" (1/1) ... [2021-05-22 01:23:22,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 01:23:22" (1/1) ... [2021-05-22 01:23:22,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 01:23:22" (1/1) ... [2021-05-22 01:23:22,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 01:23:22" (1/1) ... [2021-05-22 01:23:22,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 01:23:22" (1/1) ... [2021-05-22 01:23:22,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 01:23:22" (1/1) ... [2021-05-22 01:23:22,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-22 01:23:22,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-22 01:23:22,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-22 01:23:22,204 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-22 01:23:22,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 01:23:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-22 01:23:22,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-22 01:23:22,272 INFO L130 BoogieDeclarations]: Found specification of procedure worker_thread [2021-05-22 01:23:22,272 INFO L138 BoogieDeclarations]: Found implementation of procedure worker_thread [2021-05-22 01:23:22,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-22 01:23:22,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-22 01:23:22,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-22 01:23:22,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-22 01:23:22,274 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-22 01:23:22,447 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-22 01:23:22,447 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-05-22 01:23:22,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.05 01:23:22 BoogieIcfgContainer [2021-05-22 01:23:22,449 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-22 01:23:22,450 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-22 01:23:22,450 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-22 01:23:22,453 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-22 01:23:22,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.05 01:23:21" (1/3) ... [2021-05-22 01:23:22,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bf25899 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.05 01:23:22, skipping insertion in model container [2021-05-22 01:23:22,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 01:23:22" (2/3) ... [2021-05-22 01:23:22,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bf25899 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.05 01:23:22, skipping insertion in model container [2021-05-22 01:23:22,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.05 01:23:22" (3/3) ... [2021-05-22 01:23:22,455 INFO L111 eAbstractionObserver]: Analyzing ICFG mainThreadTerminates.c [2021-05-22 01:23:22,460 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-22 01:23:22,460 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-22 01:23:22,461 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-22 01:23:22,461 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-22 01:23:22,478 WARN L313 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,478 WARN L313 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,478 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,478 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,479 WARN L313 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,479 WARN L313 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,479 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,479 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,479 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,479 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,480 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,480 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,480 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,480 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,481 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,481 WARN L313 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,481 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,481 WARN L313 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,482 WARN L313 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,482 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,482 WARN L313 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,482 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,482 WARN L313 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,482 WARN L313 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,484 WARN L313 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,485 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,485 WARN L313 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,485 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,485 WARN L313 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,485 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,488 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-05-22 01:23:22,506 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-05-22 01:23:22,522 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 01:23:22,522 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 01:23:22,522 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 01:23:22,522 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 01:23:22,522 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 01:23:22,522 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 01:23:22,522 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 01:23:22,522 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-22 01:23:22,530 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 28 transitions, 61 flow [2021-05-22 01:23:22,542 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 80 states, 78 states have (on average 1.8846153846153846) internal successors, (147), 79 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:23:22,545 INFO L276 IsEmpty]: Start isEmpty. Operand has 80 states, 78 states have (on average 1.8846153846153846) internal successors, (147), 79 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:23:22,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-22 01:23:22,550 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:23:22,551 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:23:22,551 INFO L430 AbstractCegarLoop]: === Iteration 1 === [worker_threadErr0ASSERT_VIOLATIONASSERT, worker_threadErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:23:22,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:23:22,555 INFO L82 PathProgramCache]: Analyzing trace with hash 481569023, now seen corresponding path program 1 times [2021-05-22 01:23:22,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:23:22,571 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689526006] [2021-05-22 01:23:22,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:23:22,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:23:22,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:23:22,697 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:23:22,697 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689526006] [2021-05-22 01:23:22,698 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689526006] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:23:22,698 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:23:22,699 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-05-22 01:23:22,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552704663] [2021-05-22 01:23:22,703 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-05-22 01:23:22,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:23:22,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-05-22 01:23:22,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-05-22 01:23:22,719 INFO L87 Difference]: Start difference. First operand has 80 states, 78 states have (on average 1.8846153846153846) internal successors, (147), 79 states have internal predecessors, (147), 0 states have call successors, (0), 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 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:23:22,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:23:22,731 INFO L93 Difference]: Finished difference Result 66 states and 114 transitions. [2021-05-22 01:23:22,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-05-22 01:23:22,732 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-05-22 01:23:22,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:23:22,739 INFO L225 Difference]: With dead ends: 66 [2021-05-22 01:23:22,739 INFO L226 Difference]: Without dead ends: 66 [2021-05-22 01:23:22,740 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-05-22 01:23:22,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-05-22 01:23:22,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-05-22 01:23:22,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.7538461538461538) internal successors, (114), 65 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:23:22,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 114 transitions. [2021-05-22 01:23:22,770 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 114 transitions. Word has length 14 [2021-05-22 01:23:22,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:23:22,770 INFO L482 AbstractCegarLoop]: Abstraction has 66 states and 114 transitions. [2021-05-22 01:23:22,770 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:23:22,770 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 114 transitions. [2021-05-22 01:23:22,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-22 01:23:22,771 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:23:22,771 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:23:22,772 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-22 01:23:22,772 INFO L430 AbstractCegarLoop]: === Iteration 2 === [worker_threadErr0ASSERT_VIOLATIONASSERT, worker_threadErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:23:22,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:23:22,773 INFO L82 PathProgramCache]: Analyzing trace with hash 481569054, now seen corresponding path program 1 times [2021-05-22 01:23:22,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:23:22,773 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751803614] [2021-05-22 01:23:22,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:23:22,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:23:22,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:23:22,823 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:23:22,823 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751803614] [2021-05-22 01:23:22,823 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751803614] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:23:22,823 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:23:22,824 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-22 01:23:22,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264741493] [2021-05-22 01:23:22,825 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-22 01:23:22,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:23:22,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-22 01:23:22,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 01:23:22,827 INFO L87 Difference]: Start difference. First operand 66 states and 114 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:23:22,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:23:22,843 INFO L93 Difference]: Finished difference Result 87 states and 153 transitions. [2021-05-22 01:23:22,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-22 01:23:22,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-05-22 01:23:22,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:23:22,851 INFO L225 Difference]: With dead ends: 87 [2021-05-22 01:23:22,851 INFO L226 Difference]: Without dead ends: 87 [2021-05-22 01:23:22,852 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 01:23:22,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-05-22 01:23:22,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 73. [2021-05-22 01:23:22,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.7638888888888888) internal successors, (127), 72 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:23:22,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 127 transitions. [2021-05-22 01:23:22,862 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 127 transitions. Word has length 14 [2021-05-22 01:23:22,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:23:22,862 INFO L482 AbstractCegarLoop]: Abstraction has 73 states and 127 transitions. [2021-05-22 01:23:22,862 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:23:22,863 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 127 transitions. [2021-05-22 01:23:22,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-22 01:23:22,863 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:23:22,863 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:23:22,864 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-22 01:23:22,864 INFO L430 AbstractCegarLoop]: === Iteration 3 === [worker_threadErr0ASSERT_VIOLATIONASSERT, worker_threadErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:23:22,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:23:22,865 INFO L82 PathProgramCache]: Analyzing trace with hash -401459390, now seen corresponding path program 1 times [2021-05-22 01:23:22,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:23:22,865 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806103772] [2021-05-22 01:23:22,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:23:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:23:22,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:23:22,939 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:23:22,939 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806103772] [2021-05-22 01:23:22,939 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806103772] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 01:23:22,939 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627415064] [2021-05-22 01:23:22,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 01:23:23,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:23:23,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-22 01:23:23,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 01:23:23,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:23:23,111 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627415064] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 01:23:23,112 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 01:23:23,112 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-05-22 01:23:23,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832951487] [2021-05-22 01:23:23,112 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-22 01:23:23,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:23:23,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-22 01:23:23,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-05-22 01:23:23,114 INFO L87 Difference]: Start difference. First operand 73 states and 127 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:23:23,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:23:23,157 INFO L93 Difference]: Finished difference Result 115 states and 205 transitions. [2021-05-22 01:23:23,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-22 01:23:23,158 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-05-22 01:23:23,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:23:23,159 INFO L225 Difference]: With dead ends: 115 [2021-05-22 01:23:23,159 INFO L226 Difference]: Without dead ends: 115 [2021-05-22 01:23:23,160 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 51.9ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:23:23,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-05-22 01:23:23,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 101. [2021-05-22 01:23:23,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.79) internal successors, (179), 100 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:23:23,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 179 transitions. [2021-05-22 01:23:23,171 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 179 transitions. Word has length 18 [2021-05-22 01:23:23,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:23:23,171 INFO L482 AbstractCegarLoop]: Abstraction has 101 states and 179 transitions. [2021-05-22 01:23:23,171 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:23:23,171 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 179 transitions. [2021-05-22 01:23:23,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-22 01:23:23,172 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:23:23,172 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:23:23,389 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-05-22 01:23:23,389 INFO L430 AbstractCegarLoop]: === Iteration 4 === [worker_threadErr0ASSERT_VIOLATIONASSERT, worker_threadErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:23:23,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:23:23,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1682664602, now seen corresponding path program 2 times [2021-05-22 01:23:23,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:23:23,390 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629594143] [2021-05-22 01:23:23,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:23:23,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:23:23,464 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:23:23,464 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:23:23,464 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629594143] [2021-05-22 01:23:23,464 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629594143] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 01:23:23,465 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333002913] [2021-05-22 01:23:23,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 01:23:23,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-22 01:23:23,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 01:23:23,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2021-05-22 01:23:23,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 01:23:23,610 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:23:23,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333002913] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 01:23:23,611 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 01:23:23,611 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-05-22 01:23:23,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724181441] [2021-05-22 01:23:23,612 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:23:23,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:23:23,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:23:23,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:23:23,613 INFO L87 Difference]: Start difference. First operand 101 states and 179 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:23:23,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:23:23,674 INFO L93 Difference]: Finished difference Result 143 states and 257 transitions. [2021-05-22 01:23:23,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:23:23,674 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-05-22 01:23:23,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:23:23,676 INFO L225 Difference]: With dead ends: 143 [2021-05-22 01:23:23,676 INFO L226 Difference]: Without dead ends: 143 [2021-05-22 01:23:23,676 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 69.5ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-05-22 01:23:23,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-05-22 01:23:23,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 129. [2021-05-22 01:23:23,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.8046875) internal successors, (231), 128 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:23:23,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 231 transitions. [2021-05-22 01:23:23,688 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 231 transitions. Word has length 22 [2021-05-22 01:23:23,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:23:23,688 INFO L482 AbstractCegarLoop]: Abstraction has 129 states and 231 transitions. [2021-05-22 01:23:23,689 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:23:23,689 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 231 transitions. [2021-05-22 01:23:23,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-22 01:23:23,690 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:23:23,690 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:23:23,908 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 01:23:23,909 INFO L430 AbstractCegarLoop]: === Iteration 5 === [worker_threadErr0ASSERT_VIOLATIONASSERT, worker_threadErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:23:23,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:23:23,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1060881014, now seen corresponding path program 3 times [2021-05-22 01:23:23,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:23:23,910 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474277866] [2021-05-22 01:23:23,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:23:23,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:23:23,974 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:23:23,975 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:23:23,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474277866] [2021-05-22 01:23:23,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474277866] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 01:23:23,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44199296] [2021-05-22 01:23:23,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 01:23:24,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-05-22 01:23:24,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 01:23:24,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-22 01:23:24,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 01:23:24,154 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:23:24,154 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44199296] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 01:23:24,154 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 01:23:24,154 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-05-22 01:23:24,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044982444] [2021-05-22 01:23:24,155 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-22 01:23:24,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:23:24,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-22 01:23:24,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:23:24,159 INFO L87 Difference]: Start difference. First operand 129 states and 231 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:23:24,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:23:24,262 INFO L93 Difference]: Finished difference Result 157 states and 283 transitions. [2021-05-22 01:23:24,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-22 01:23:24,263 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-22 01:23:24,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:23:24,266 INFO L225 Difference]: With dead ends: 157 [2021-05-22 01:23:24,267 INFO L226 Difference]: Without dead ends: 157 [2021-05-22 01:23:24,267 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 91.5ms TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2021-05-22 01:23:24,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-05-22 01:23:24,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2021-05-22 01:23:24,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.814102564102564) internal successors, (283), 156 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:23:24,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 283 transitions. [2021-05-22 01:23:24,289 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 283 transitions. Word has length 26 [2021-05-22 01:23:24,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:23:24,289 INFO L482 AbstractCegarLoop]: Abstraction has 157 states and 283 transitions. [2021-05-22 01:23:24,289 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:23:24,289 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 283 transitions. [2021-05-22 01:23:24,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-05-22 01:23:24,290 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:23:24,291 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:23:24,491 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 01:23:24,491 INFO L430 AbstractCegarLoop]: === Iteration 6 === [worker_threadErr0ASSERT_VIOLATIONASSERT, worker_threadErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:23:24,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:23:24,492 INFO L82 PathProgramCache]: Analyzing trace with hash 602551726, now seen corresponding path program 4 times [2021-05-22 01:23:24,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:23:24,492 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697842641] [2021-05-22 01:23:24,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:23:24,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-22 01:23:24,504 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-22 01:23:24,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-22 01:23:24,514 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-22 01:23:24,528 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-05-22 01:23:24,529 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-05-22 01:23:24,529 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-22 01:23:24,529 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE (1/2) [2021-05-22 01:23:24,532 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-22 01:23:24,533 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 01:23:24,533 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 01:23:24,533 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 01:23:24,533 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 01:23:24,533 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 01:23:24,533 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 01:23:24,533 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 01:23:24,534 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-05-22 01:23:24,535 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 28 transitions, 61 flow [2021-05-22 01:23:24,538 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 80 states, 78 states have (on average 1.8846153846153846) internal successors, (147), 79 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:23:24,538 INFO L276 IsEmpty]: Start isEmpty. Operand has 80 states, 78 states have (on average 1.8846153846153846) internal successors, (147), 79 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:23:24,539 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-22 01:23:24,539 INFO L315 ceAbstractionStarter]: Result for error location InUseError was SAFE (2/2) [2021-05-22 01:23:24,540 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-05-22 01:23:24,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.05 01:23:24 BasicIcfg [2021-05-22 01:23:24,569 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-22 01:23:24,569 INFO L168 Benchmark]: Toolchain (without parser) took 2636.33 ms. Allocated memory is still 335.5 MB. Free memory was 297.3 MB in the beginning and 151.7 MB in the end (delta: 145.6 MB). Peak memory consumption was 147.3 MB. Max. memory is 16.0 GB. [2021-05-22 01:23:24,569 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 335.5 MB. Free memory was 315.8 MB in the beginning and 315.8 MB in the end (delta: 70.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-22 01:23:24,570 INFO L168 Benchmark]: CACSL2BoogieTranslator took 216.31 ms. Allocated memory is still 335.5 MB. Free memory was 297.1 MB in the beginning and 318.4 MB in the end (delta: -21.3 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.0 GB. [2021-05-22 01:23:24,570 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.55 ms. Allocated memory is still 335.5 MB. Free memory was 318.4 MB in the beginning and 317.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-22 01:23:24,570 INFO L168 Benchmark]: Boogie Preprocessor took 24.22 ms. Allocated memory is still 335.5 MB. Free memory is still 316.3 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-05-22 01:23:24,570 INFO L168 Benchmark]: RCFGBuilder took 245.36 ms. Allocated memory is still 335.5 MB. Free memory was 315.3 MB in the beginning and 301.7 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-05-22 01:23:24,570 INFO L168 Benchmark]: TraceAbstraction took 2118.44 ms. Allocated memory is still 335.5 MB. Free memory was 301.7 MB in the beginning and 151.7 MB in the end (delta: 150.0 MB). Peak memory consumption was 151.0 MB. Max. memory is 16.0 GB. [2021-05-22 01:23:24,571 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 335.5 MB. Free memory was 315.8 MB in the beginning and 315.8 MB in the end (delta: 70.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 216.31 ms. Allocated memory is still 335.5 MB. Free memory was 297.1 MB in the beginning and 318.4 MB in the end (delta: -21.3 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 24.55 ms. Allocated memory is still 335.5 MB. Free memory was 318.4 MB in the beginning and 317.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 24.22 ms. Allocated memory is still 335.5 MB. Free memory is still 316.3 MB. There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 245.36 ms. Allocated memory is still 335.5 MB. Free memory was 315.3 MB in the beginning and 301.7 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2118.44 ms. Allocated memory is still 335.5 MB. Free memory was 301.7 MB in the beginning and 151.7 MB in the end (delta: 150.0 MB). Peak memory consumption was 151.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 22]: assertion can be violated assertion can be violated We found a FailurePath: [L26] 0 pthread_t thread; [L27] FCALL, FORK 0 pthread_create(&thread, NULL, worker_thread, NULL) VAL [arg={0:0}] [L18] 1 int x = 0; VAL [arg={0:0}, arg={0:0}, x=0] [L19] COND TRUE 1 x < 4 VAL [arg={0:0}, arg={0:0}, x=0] [L20] 1 x++ VAL [arg={0:0}, arg={0:0}, x=1] [L19] COND TRUE 1 x < 4 VAL [arg={0:0}, arg={0:0}, x=1] [L20] 1 x++ VAL [arg={0:0}, arg={0:0}, x=2] [L19] COND TRUE 1 x < 4 VAL [arg={0:0}, arg={0:0}, x=2] [L20] 1 x++ VAL [arg={0:0}, arg={0:0}, x=3] [L19] COND TRUE 1 x < 4 VAL [arg={0:0}, arg={0:0}, x=3] [L20] 1 x++ VAL [arg={0:0}, arg={0:0}, x=4] [L19] COND FALSE 1 !(x < 4) VAL [arg={0:0}, arg={0:0}, x=4] [L22] 1 CodeAnnotStmt[Assertion] VAL [arg={0:0}, arg={0:0}, x=4] - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 38 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2009.6ms, OverallIterations: 6, TraceHistogramMax: 4, EmptinessCheckTime: 11.7ms, AutomataDifference: 285.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 20.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 151 SDtfs, 212 SDslu, 436 SDs, 0 SdLazy, 103 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 68.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 221.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=157occurred in iteration=5, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 72.7ms AutomataMinimizationTime, 5 MinimizatonAttempts, 42 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 39.9ms SsaConstructionTime, 121.9ms SatisfiabilityAnalysisTime, 544.9ms InterpolantComputationTime, 190 NumberOfCodeBlocks, 190 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 262 SizeOfPredicates, 12 NumberOfNonLiveVariables, 147 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 0/44 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 38 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.2ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 1.3ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...