/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/join_correct.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 12:55:38,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 12:55:38,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 12:55:38,909 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-05 12:55:38,909 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-05 12:55:38,913 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-05 12:55:38,915 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-05 12:55:38,920 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-05 12:55:38,922 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-05 12:55:38,926 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-05 12:55:38,927 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-05 12:55:38,929 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-05 12:55:38,929 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-05 12:55:38,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-05 12:55:38,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-05 12:55:38,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-05 12:55:38,936 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-05 12:55:38,937 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-05 12:55:38,939 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-05 12:55:38,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-05 12:55:38,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-05 12:55:38,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-05 12:55:38,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-05 12:55:38,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-05 12:55:38,956 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-05 12:55:38,964 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 12:55:38,964 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 12:55:38,965 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 12:55:38,969 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 [2021-06-05 12:55:39,004 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 12:55:39,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 12:55:39,005 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 12:55:39,005 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 12:55:39,008 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 12:55:39,008 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 12:55:39,008 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 12:55:39,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 12:55:39,008 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 12:55:39,009 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 12:55:39,009 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 12:55:39,010 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 12:55:39,010 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 12:55:39,010 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 12:55:39,010 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 12:55:39,010 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 12:55:39,010 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 12:55:39,010 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 12:55:39,010 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 12:55:39,011 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 12:55:39,011 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 12:55:39,011 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 12:55:39,011 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 12:55:39,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 12:55:39,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 12:55:39,012 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 12:55:39,012 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 12:55:39,012 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 12:55:39,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 12:55:39,012 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 12:55:39,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 12:55:39,012 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-06-05 12:55:39,013 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 12:55:39,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 12:55:39,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 12:55:39,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 12:55:39,372 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 12:55:39,373 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 12:55:39,374 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/join_correct.c [2021-06-05 12:55:39,453 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ca58cc89/5edceff596c841abbe88a08acfaba4ff/FLAG5f0525479 [2021-06-05 12:55:39,898 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 12:55:39,898 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/join_correct.c [2021-06-05 12:55:39,899 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-05 12:55:39,930 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ca58cc89/5edceff596c841abbe88a08acfaba4ff/FLAG5f0525479 [2021-06-05 12:55:40,311 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ca58cc89/5edceff596c841abbe88a08acfaba4ff [2021-06-05 12:55:40,313 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 12:55:40,317 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 12:55:40,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 12:55:40,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 12:55:40,322 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 12:55:40,323 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 12:55:40" (1/1) ... [2021-06-05 12:55:40,324 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c72ca9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:55:40, skipping insertion in model container [2021-06-05 12:55:40,325 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 12:55:40" (1/1) ... [2021-06-05 12:55:40,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 12:55:40,341 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 12:55:40,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 12:55:40,535 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 12:55:40,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 12:55:40,563 INFO L208 MainTranslator]: Completed translation [2021-06-05 12:55:40,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:55:40 WrapperNode [2021-06-05 12:55:40,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 12:55:40,570 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 12:55:40,570 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 12:55:40,571 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 12:55:40,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:55:40" (1/1) ... [2021-06-05 12:55:40,583 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:55:40" (1/1) ... [2021-06-05 12:55:40,597 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 12:55:40,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 12:55:40,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 12:55:40,598 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 12:55:40,604 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:55:40" (1/1) ... [2021-06-05 12:55:40,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:55:40" (1/1) ... [2021-06-05 12:55:40,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:55:40" (1/1) ... [2021-06-05 12:55:40,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:55:40" (1/1) ... [2021-06-05 12:55:40,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:55:40" (1/1) ... [2021-06-05 12:55:40,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:55:40" (1/1) ... [2021-06-05 12:55:40,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:55:40" (1/1) ... [2021-06-05 12:55:40,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 12:55:40,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 12:55:40,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 12:55:40,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 12:55:40,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:55:40" (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 [2021-06-05 12:55:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-06-05 12:55:40,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 12:55:40,690 INFO L130 BoogieDeclarations]: Found specification of procedure increment [2021-06-05 12:55:40,690 INFO L138 BoogieDeclarations]: Found implementation of procedure increment [2021-06-05 12:55:40,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 12:55:40,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 12:55:40,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-05 12:55:40,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-06-05 12:55:40,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 12:55:40,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 12:55:40,693 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 12:55:40,957 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 12:55:40,957 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-06-05 12:55:40,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 12:55:40 BoogieIcfgContainer [2021-06-05 12:55:40,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 12:55:40,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 12:55:40,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 12:55:40,962 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 12:55:40,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 12:55:40" (1/3) ... [2021-06-05 12:55:40,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@245e1ab0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 12:55:40, skipping insertion in model container [2021-06-05 12:55:40,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:55:40" (2/3) ... [2021-06-05 12:55:40,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@245e1ab0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 12:55:40, skipping insertion in model container [2021-06-05 12:55:40,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 12:55:40" (3/3) ... [2021-06-05 12:55:40,964 INFO L111 eAbstractionObserver]: Analyzing ICFG join_correct.c [2021-06-05 12:55:40,969 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 12:55:40,969 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 12:55:40,969 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 12:55:40,970 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 12:55:40,987 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:40,987 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:40,987 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:40,987 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:40,988 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:40,988 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:40,988 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:40,988 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:40,988 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:40,989 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:40,989 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:40,989 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:40,989 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:40,989 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:40,989 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:40,989 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:40,991 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:40,991 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:40,991 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:40,991 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:40,998 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-06-05 12:55:41,016 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 12:55:41,032 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 12:55:41,033 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 12:55:41,033 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 12:55:41,033 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 12:55:41,033 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 12:55:41,033 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 12:55:41,033 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 12:55:41,033 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 12:55:41,049 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 38 transitions, 84 flow [2021-06-05 12:55:41,066 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 84 states, 80 states have (on average 1.5875) internal successors, (127), 83 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) [2021-06-05 12:55:41,069 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 80 states have (on average 1.5875) internal successors, (127), 83 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) [2021-06-05 12:55:41,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 12:55:41,080 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 12:55:41,082 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 12:55:41,082 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 12:55:41,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 12:55:41,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1806410254, now seen corresponding path program 1 times [2021-06-05 12:55:41,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 12:55:41,102 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971513118] [2021-06-05 12:55:41,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 12:55:41,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:55:41,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 12:55:41,279 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 12:55:41,279 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971513118] [2021-06-05 12:55:41,280 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971513118] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 12:55:41,281 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 12:55:41,281 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-05 12:55:41,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565715867] [2021-06-05 12:55:41,285 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-05 12:55:41,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 12:55:41,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-05 12:55:41,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-05 12:55:41,303 INFO L87 Difference]: Start difference. First operand has 84 states, 80 states have (on average 1.5875) internal successors, (127), 83 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) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:55:41,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 12:55:41,320 INFO L93 Difference]: Finished difference Result 84 states and 122 transitions. [2021-06-05 12:55:41,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-05 12:55:41,321 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 12:55:41,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 12:55:41,328 INFO L225 Difference]: With dead ends: 84 [2021-06-05 12:55:41,329 INFO L226 Difference]: Without dead ends: 53 [2021-06-05 12:55:41,330 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 [2021-06-05 12:55:41,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-06-05 12:55:41,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-06-05 12:55:41,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.4615384615384615) internal successors, (76), 52 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:55:41,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 76 transitions. [2021-06-05 12:55:41,374 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 76 transitions. Word has length 28 [2021-06-05 12:55:41,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 12:55:41,374 INFO L482 AbstractCegarLoop]: Abstraction has 53 states and 76 transitions. [2021-06-05 12:55:41,375 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:55:41,375 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 76 transitions. [2021-06-05 12:55:41,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 12:55:41,377 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 12:55:41,378 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 12:55:41,378 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 12:55:41,379 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 12:55:41,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 12:55:41,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1044209, now seen corresponding path program 1 times [2021-06-05 12:55:41,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 12:55:41,384 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607156281] [2021-06-05 12:55:41,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 12:55:41,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:55:41,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 12:55:41,497 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 12:55:41,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607156281] [2021-06-05 12:55:41,498 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607156281] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 12:55:41,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041897067] [2021-06-05 12:55:41,498 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 [2021-06-05 12:55:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:55:41,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2021-06-05 12:55:41,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 12:55:41,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 12:55:41,714 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041897067] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 12:55:41,714 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 12:55:41,714 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-06-05 12:55:41,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902478289] [2021-06-05 12:55:41,716 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 12:55:41,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 12:55:41,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 12:55:41,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-05 12:55:41,717 INFO L87 Difference]: Start difference. First operand 53 states and 76 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:55:41,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 12:55:41,765 INFO L93 Difference]: Finished difference Result 35 states and 49 transitions. [2021-06-05 12:55:41,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 12:55:41,765 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 12:55:41,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 12:55:41,766 INFO L225 Difference]: With dead ends: 35 [2021-06-05 12:55:41,766 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 12:55:41,766 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.1ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-06-05 12:55:41,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 12:55:41,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 12:55:41,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:55:41,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 12:55:41,767 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2021-06-05 12:55:41,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 12:55:41,767 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 12:55:41,768 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:55:41,768 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 12:55:41,768 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 12:55:41,997 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-06-05 12:55:41,997 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2021-06-05 12:55:41,999 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 12:55:41,999 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 12:55:42,000 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 12:55:42,000 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 12:55:42,000 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 12:55:42,000 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 12:55:42,000 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 12:55:42,000 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 12:55:42,000 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-06-05 12:55:42,001 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 38 transitions, 84 flow [2021-06-05 12:55:42,004 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 84 states, 80 states have (on average 1.5875) internal successors, (127), 83 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) [2021-06-05 12:55:42,005 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 80 states have (on average 1.5875) internal successors, (127), 83 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) [2021-06-05 12:55:42,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 12:55:42,006 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 12:55:42,006 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 12:55:42,006 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-05 12:55:42,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 12:55:42,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1623463023, now seen corresponding path program 1 times [2021-06-05 12:55:42,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 12:55:42,007 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544916097] [2021-06-05 12:55:42,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 12:55:42,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 12:55:42,020 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 12:55:42,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 12:55:42,033 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 12:55:42,048 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-05 12:55:42,048 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-06-05 12:55:42,048 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 12:55:42,048 INFO L315 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2021-06-05 12:55:42,049 WARN L242 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-05 12:55:42,049 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2021-06-05 12:55:42,058 WARN L313 ript$VariableManager]: TermVariabe |incrementThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:42,058 WARN L313 ript$VariableManager]: TermVariabe |incrementThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:42,058 WARN L313 ript$VariableManager]: TermVariabe incrementThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:42,058 WARN L313 ript$VariableManager]: TermVariabe incrementThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:42,058 WARN L313 ript$VariableManager]: TermVariabe |incrementThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:42,058 WARN L313 ript$VariableManager]: TermVariabe |incrementThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:42,059 WARN L313 ript$VariableManager]: TermVariabe incrementThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:42,059 WARN L313 ript$VariableManager]: TermVariabe incrementThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:42,059 WARN L313 ript$VariableManager]: TermVariabe incrementThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:42,059 WARN L313 ript$VariableManager]: TermVariabe incrementThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:42,059 WARN L313 ript$VariableManager]: TermVariabe |incrementThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:42,059 WARN L313 ript$VariableManager]: TermVariabe |incrementThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:42,059 WARN L313 ript$VariableManager]: TermVariabe incrementThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:42,059 WARN L313 ript$VariableManager]: TermVariabe incrementThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:42,059 WARN L313 ript$VariableManager]: TermVariabe |incrementThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:42,059 WARN L313 ript$VariableManager]: TermVariabe |incrementThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:42,060 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:42,060 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:42,060 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:42,060 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:42,060 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:42,060 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:42,060 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:42,060 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:42,060 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:42,061 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:42,061 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:42,061 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:42,061 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:42,061 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:42,061 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:42,061 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:42,062 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:42,062 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:42,062 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:42,062 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:42,064 WARN L313 ript$VariableManager]: TermVariabe incrementThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:42,064 WARN L313 ript$VariableManager]: TermVariabe |incrementThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:42,064 WARN L313 ript$VariableManager]: TermVariabe incrementThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:42,064 WARN L313 ript$VariableManager]: TermVariabe |incrementThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:42,077 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-06-05 12:55:42,077 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 12:55:42,078 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 12:55:42,078 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 12:55:42,078 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 12:55:42,078 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 12:55:42,078 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 12:55:42,079 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 12:55:42,079 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 12:55:42,079 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 12:55:42,080 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 43 transitions, 104 flow [2021-06-05 12:55:42,111 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 416 states, 408 states have (on average 2.156862745098039) internal successors, (880), 415 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:55:42,118 INFO L276 IsEmpty]: Start isEmpty. Operand has 416 states, 408 states have (on average 2.156862745098039) internal successors, (880), 415 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:55:42,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 12:55:42,125 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 12:55:42,125 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 12:55:42,125 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 12:55:42,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 12:55:42,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1533845642, now seen corresponding path program 1 times [2021-06-05 12:55:42,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 12:55:42,127 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421047277] [2021-06-05 12:55:42,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 12:55:42,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:55:42,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 12:55:42,155 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 12:55:42,156 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421047277] [2021-06-05 12:55:42,156 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421047277] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 12:55:42,156 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 12:55:42,156 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-05 12:55:42,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373403162] [2021-06-05 12:55:42,157 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-05 12:55:42,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 12:55:42,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-05 12:55:42,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-05 12:55:42,161 INFO L87 Difference]: Start difference. First operand has 416 states, 408 states have (on average 2.156862745098039) internal successors, (880), 415 states have internal predecessors, (880), 0 states have call successors, (0), 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 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:55:42,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 12:55:42,185 INFO L93 Difference]: Finished difference Result 416 states and 859 transitions. [2021-06-05 12:55:42,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-05 12:55:42,185 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 12:55:42,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 12:55:42,188 INFO L225 Difference]: With dead ends: 416 [2021-06-05 12:55:42,189 INFO L226 Difference]: Without dead ends: 261 [2021-06-05 12:55:42,189 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 [2021-06-05 12:55:42,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-06-05 12:55:42,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2021-06-05 12:55:42,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 258 states have (on average 2.0775193798449614) internal successors, (536), 260 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:55:42,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 536 transitions. [2021-06-05 12:55:42,224 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 536 transitions. Word has length 28 [2021-06-05 12:55:42,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 12:55:42,224 INFO L482 AbstractCegarLoop]: Abstraction has 261 states and 536 transitions. [2021-06-05 12:55:42,225 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:55:42,225 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 536 transitions. [2021-06-05 12:55:42,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 12:55:42,229 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 12:55:42,229 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 12:55:42,229 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 12:55:42,229 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 12:55:42,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 12:55:42,230 INFO L82 PathProgramCache]: Analyzing trace with hash -273608821, now seen corresponding path program 1 times [2021-06-05 12:55:42,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 12:55:42,230 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128797752] [2021-06-05 12:55:42,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 12:55:42,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:55:42,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 12:55:42,322 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 12:55:42,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128797752] [2021-06-05 12:55:42,322 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128797752] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 12:55:42,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898719415] [2021-06-05 12:55:42,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-06-05 12:55:42,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:55:42,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2021-06-05 12:55:42,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 12:55:42,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 12:55:42,482 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898719415] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 12:55:42,482 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 12:55:42,483 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-06-05 12:55:42,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595183446] [2021-06-05 12:55:42,483 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 12:55:42,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 12:55:42,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 12:55:42,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-05 12:55:42,484 INFO L87 Difference]: Start difference. First operand 261 states and 536 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:55:42,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 12:55:42,544 INFO L93 Difference]: Finished difference Result 243 states and 509 transitions. [2021-06-05 12:55:42,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 12:55:42,545 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 12:55:42,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 12:55:42,550 INFO L225 Difference]: With dead ends: 243 [2021-06-05 12:55:42,550 INFO L226 Difference]: Without dead ends: 243 [2021-06-05 12:55:42,550 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 37.5ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-06-05 12:55:42,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-06-05 12:55:42,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2021-06-05 12:55:42,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 241 states have (on average 2.112033195020747) internal successors, (509), 242 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:55:42,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 509 transitions. [2021-06-05 12:55:42,579 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 509 transitions. Word has length 28 [2021-06-05 12:55:42,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 12:55:42,579 INFO L482 AbstractCegarLoop]: Abstraction has 243 states and 509 transitions. [2021-06-05 12:55:42,579 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:55:42,579 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 509 transitions. [2021-06-05 12:55:42,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-06-05 12:55:42,583 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 12:55:42,583 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 12:55:42,788 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 12:55:42,789 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 12:55:42,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 12:55:42,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1144972007, now seen corresponding path program 1 times [2021-06-05 12:55:42,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 12:55:42,790 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212695899] [2021-06-05 12:55:42,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 12:55:42,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:55:42,987 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-06-05 12:55:42,987 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 12:55:42,987 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212695899] [2021-06-05 12:55:42,987 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212695899] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 12:55:42,988 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182291584] [2021-06-05 12:55:42,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-06-05 12:55:43,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:55:43,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 12:55:43,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 12:55:43,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 12:55:43,246 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 12:55:43,251 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 12:55:43,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 12:55:43,256 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 12:55:43,260 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 12:55:43,261 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-06-05 12:55:43,261 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:23, output treesize:15 [2021-06-05 12:55:43,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-06-05 12:55:43,296 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 12:55:43,302 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 12:55:43,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-06-05 12:55:43,305 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 12:55:43,308 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 12:55:43,309 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-06-05 12:55:43,310 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:7 [2021-06-05 12:55:43,311 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-06-05 12:55:43,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182291584] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 12:55:43,311 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 12:55:43,311 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-06-05 12:55:43,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882685651] [2021-06-05 12:55:43,312 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 12:55:43,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 12:55:43,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 12:55:43,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 12:55:43,313 INFO L87 Difference]: Start difference. First operand 243 states and 509 transitions. Second operand has 9 states, 8 states have (on average 4.125) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:55:43,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 12:55:43,591 INFO L93 Difference]: Finished difference Result 239 states and 502 transitions. [2021-06-05 12:55:43,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 12:55:43,592 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.125) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-06-05 12:55:43,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 12:55:43,593 INFO L225 Difference]: With dead ends: 239 [2021-06-05 12:55:43,593 INFO L226 Difference]: Without dead ends: 219 [2021-06-05 12:55:43,594 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 248.5ms TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-06-05 12:55:43,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-06-05 12:55:43,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2021-06-05 12:55:43,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 2.1422018348623855) internal successors, (467), 218 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:55:43,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 467 transitions. [2021-06-05 12:55:43,601 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 467 transitions. Word has length 38 [2021-06-05 12:55:43,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 12:55:43,602 INFO L482 AbstractCegarLoop]: Abstraction has 219 states and 467 transitions. [2021-06-05 12:55:43,602 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 4.125) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:55:43,602 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 467 transitions. [2021-06-05 12:55:43,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-06-05 12:55:43,603 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 12:55:43,603 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 12:55:43,816 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 12:55:43,817 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 12:55:43,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 12:55:43,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1397908089, now seen corresponding path program 1 times [2021-06-05 12:55:43,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 12:55:43,818 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949469357] [2021-06-05 12:55:43,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 12:55:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:55:44,297 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 12:55:44,298 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 12:55:44,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949469357] [2021-06-05 12:55:44,298 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949469357] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 12:55:44,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686634064] [2021-06-05 12:55:44,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 12:55:44,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:55:44,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 12:55:44,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 12:55:44,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 12:55:44,398 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 12:55:44,407 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 12:55:44,410 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-06-05 12:55:44,410 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:32, output treesize:33 [2021-06-05 12:55:44,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 12:55:44,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 29 [2021-06-05 12:55:44,532 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 12:55:44,541 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 12:55:44,546 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-05 12:55:44,546 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:40, output treesize:36 [2021-06-05 12:55:44,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 12:55:44,816 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 12:55:44,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 17 [2021-06-05 12:55:44,819 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 12:55:44,824 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 12:55:44,826 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-06-05 12:55:44,826 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:50, output treesize:11 [2021-06-05 12:55:44,854 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 12:55:44,854 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686634064] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 12:55:44,854 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 12:55:44,854 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 19 [2021-06-05 12:55:44,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201603669] [2021-06-05 12:55:44,857 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 12:55:44,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 12:55:44,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 12:55:44,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-06-05 12:55:44,862 INFO L87 Difference]: Start difference. First operand 219 states and 467 transitions. Second operand has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:55:45,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 12:55:45,138 INFO L93 Difference]: Finished difference Result 195 states and 425 transitions. [2021-06-05 12:55:45,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 12:55:45,138 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-06-05 12:55:45,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 12:55:45,139 INFO L225 Difference]: With dead ends: 195 [2021-06-05 12:55:45,139 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 12:55:45,139 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 580.3ms TimeCoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2021-06-05 12:55:45,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 12:55:45,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 12:55:45,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:55:45,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 12:55:45,140 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2021-06-05 12:55:45,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 12:55:45,140 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 12:55:45,140 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:55:45,140 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 12:55:45,140 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 12:55:45,356 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 12:55:45,357 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2021-06-05 12:55:45,357 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 12:55:45,358 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 12:55:45,358 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 12:55:45,358 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 12:55:45,358 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 12:55:45,358 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 12:55:45,358 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 12:55:45,358 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 12:55:45,358 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-06-05 12:55:45,359 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 43 transitions, 104 flow [2021-06-05 12:55:45,367 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 416 states, 408 states have (on average 2.156862745098039) internal successors, (880), 415 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:55:45,368 INFO L276 IsEmpty]: Start isEmpty. Operand has 416 states, 408 states have (on average 2.156862745098039) internal successors, (880), 415 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:55:45,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-06-05 12:55:45,370 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 12:55:45,370 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 12:55:45,370 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-05 12:55:45,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 12:55:45,370 INFO L82 PathProgramCache]: Analyzing trace with hash -451166546, now seen corresponding path program 1 times [2021-06-05 12:55:45,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 12:55:45,371 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679516499] [2021-06-05 12:55:45,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 12:55:45,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:55:45,421 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 12:55:45,421 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 12:55:45,421 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679516499] [2021-06-05 12:55:45,421 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679516499] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 12:55:45,422 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059636557] [2021-06-05 12:55:45,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 12:55:45,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:55:45,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2021-06-05 12:55:45,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 12:55:45,542 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 12:55:45,542 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059636557] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 12:55:45,543 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-05 12:55:45,543 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2021-06-05 12:55:45,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997661703] [2021-06-05 12:55:45,543 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 12:55:45,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 12:55:45,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 12:55:45,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-06-05 12:55:45,545 INFO L87 Difference]: Start difference. First operand has 416 states, 408 states have (on average 2.156862745098039) internal successors, (880), 415 states have internal predecessors, (880), 0 states have call successors, (0), 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 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:55:45,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 12:55:45,606 INFO L93 Difference]: Finished difference Result 336 states and 659 transitions. [2021-06-05 12:55:45,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 12:55:45,607 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-06-05 12:55:45,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 12:55:45,609 INFO L225 Difference]: With dead ends: 336 [2021-06-05 12:55:45,609 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 12:55:45,609 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 57.4ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-06-05 12:55:45,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 12:55:45,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 12:55:45,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:55:45,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 12:55:45,610 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2021-06-05 12:55:45,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 12:55:45,611 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 12:55:45,611 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:55:45,611 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 12:55:45,611 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 12:55:45,826 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 12:55:45,826 INFO L315 ceAbstractionStarter]: Result for error location InUseError was SAFE (2/2) [2021-06-05 12:55:45,827 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2021-06-05 12:55:45,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 12:55:45 BasicIcfg [2021-06-05 12:55:45,830 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 12:55:45,830 INFO L168 Benchmark]: Toolchain (without parser) took 5513.54 ms. Allocated memory is still 339.7 MB. Free memory was 301.8 MB in the beginning and 218.8 MB in the end (delta: 83.0 MB). Peak memory consumption was 85.9 MB. Max. memory is 16.0 GB. [2021-06-05 12:55:45,830 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 339.7 MB. Free memory was 320.1 MB in the beginning and 320.0 MB in the end (delta: 70.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 12:55:45,831 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.54 ms. Allocated memory is still 339.7 MB. Free memory was 301.6 MB in the beginning and 321.8 MB in the end (delta: -20.2 MB). Peak memory consumption was 9.0 MB. Max. memory is 16.0 GB. [2021-06-05 12:55:45,831 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.07 ms. Allocated memory is still 339.7 MB. Free memory was 321.8 MB in the beginning and 320.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 12:55:45,831 INFO L168 Benchmark]: Boogie Preprocessor took 27.56 ms. Allocated memory is still 339.7 MB. Free memory was 320.8 MB in the beginning and 319.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 12:55:45,831 INFO L168 Benchmark]: RCFGBuilder took 332.44 ms. Allocated memory is still 339.7 MB. Free memory was 319.7 MB in the beginning and 302.9 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-06-05 12:55:45,831 INFO L168 Benchmark]: TraceAbstraction took 4870.17 ms. Allocated memory is still 339.7 MB. Free memory was 302.9 MB in the beginning and 218.8 MB in the end (delta: 84.1 MB). Peak memory consumption was 85.2 MB. Max. memory is 16.0 GB. [2021-06-05 12:55:45,832 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 339.7 MB. Free memory was 320.1 MB in the beginning and 320.0 MB in the end (delta: 70.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 250.54 ms. Allocated memory is still 339.7 MB. Free memory was 301.6 MB in the beginning and 321.8 MB in the end (delta: -20.2 MB). Peak memory consumption was 9.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 27.07 ms. Allocated memory is still 339.7 MB. Free memory was 321.8 MB in the beginning and 320.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 27.56 ms. Allocated memory is still 339.7 MB. Free memory was 320.8 MB in the beginning and 319.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 332.44 ms. Allocated memory is still 339.7 MB. Free memory was 319.7 MB in the beginning and 302.9 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4870.17 ms. Allocated memory is still 339.7 MB. Free memory was 302.9 MB in the beginning and 218.8 MB in the end (delta: 84.1 MB). Peak memory consumption was 85.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 33]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 42 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 967.0ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 16.2ms, AutomataDifference: 95.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 32.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 54 SDtfs, 23 SDslu, 40 SDs, 0 SdLazy, 19 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 23.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 32.0ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 25.5ms SsaConstructionTime, 74.4ms SatisfiabilityAnalysisTime, 289.3ms InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 81 ConstructedInterpolants, 0 QuantifiedInterpolants, 137 SizeOfPredicates, 2 NumberOfNonLiveVariables, 76 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 1/3 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 with 2 thread instances CFG has 4 procedures, 46 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3278.6ms, OverallIterations: 4, TraceHistogramMax: 2, EmptinessCheckTime: 22.1ms, AutomataDifference: 661.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 32.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 187 SDtfs, 273 SDslu, 712 SDs, 0 SdLazy, 296 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 191.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 98 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 866.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=416occurred in iteration=0, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 71.6ms AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 59.6ms SsaConstructionTime, 126.7ms SatisfiabilityAnalysisTime, 1547.5ms InterpolantComputationTime, 236 NumberOfCodeBlocks, 236 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 229 ConstructedInterpolants, 12 QuantifiedInterpolants, 2379 SizeOfPredicates, 26 NumberOfNonLiveVariables, 270 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 13/51 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, 42 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 48.8ms, OverallIterations: 1, TraceHistogramMax: 2, EmptinessCheckTime: 1.1ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred 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: TRACE_CHECK: 1.3ms SsaConstructionTime, 10.0ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 4 procedures, 46 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 468.8ms, OverallIterations: 1, TraceHistogramMax: 3, EmptinessCheckTime: 2.4ms, AutomataDifference: 65.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 60 SDtfs, 71 SDslu, 86 SDs, 0 SdLazy, 39 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 57.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=416occurred 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: 0.4ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 8.6ms SsaConstructionTime, 15.6ms SatisfiabilityAnalysisTime, 105.5ms InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 SizeOfPredicates, 4 NumberOfNonLiveVariables, 70 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 30/40 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...