/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-atomic/time_var_mutex.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 11:06:35,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 11:06:35,704 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 11:06:35,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 11:06:35,731 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 11:06:35,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 11:06:35,733 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 11:06:35,735 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 11:06:35,737 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 11:06:35,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 11:06:35,739 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 11:06:35,740 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 11:06:35,740 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 11:06:35,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 11:06:35,742 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 11:06:35,743 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 11:06:35,744 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 11:06:35,745 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 11:06:35,749 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 11:06:35,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 11:06:35,756 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 11:06:35,758 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 11:06:35,760 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 11:06:35,762 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 11:06:35,769 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-09 11:06:35,773 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 11:06:35,774 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 11:06:35,776 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 11:06:35,778 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 11:06:35,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 11:06:35,787 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 11:06:35,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 11:06:35,788 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 11:06:35,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 11:06:35,791 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 11:06:35,792 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 11:06:35,793 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-09 11:06:35,835 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 11:06:35,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 11:06:35,838 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 11:06:35,838 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 11:06:35,839 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 11:06:35,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 11:06:35,839 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 11:06:35,839 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 11:06:35,840 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 11:06:35,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 11:06:35,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 11:06:35,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 11:06:35,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 11:06:35,842 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 11:06:35,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 11:06:35,842 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 11:06:35,842 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 11:06:35,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 11:06:35,843 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 11:06:35,843 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 11:06:35,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 11:06:35,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 11:06:35,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 11:06:35,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 11:06:35,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 11:06:35,844 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-09 11:06:35,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 11:06:35,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-09 11:06:35,845 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-09 11:06:35,845 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 11:06:36,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 11:06:36,189 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 11:06:36,193 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 11:06:36,194 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 11:06:36,195 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 11:06:36,196 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/time_var_mutex.i [2020-10-09 11:06:36,257 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f67953f51/48bac899498f4422a0e0dbdd5c566067/FLAG025864135 [2020-10-09 11:06:36,839 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 11:06:36,839 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/time_var_mutex.i [2020-10-09 11:06:36,854 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f67953f51/48bac899498f4422a0e0dbdd5c566067/FLAG025864135 [2020-10-09 11:06:37,242 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f67953f51/48bac899498f4422a0e0dbdd5c566067 [2020-10-09 11:06:37,251 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 11:06:37,253 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 11:06:37,254 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 11:06:37,254 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 11:06:37,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 11:06:37,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 11:06:37" (1/1) ... [2020-10-09 11:06:37,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46b7e18a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 11:06:37, skipping insertion in model container [2020-10-09 11:06:37,262 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 11:06:37" (1/1) ... [2020-10-09 11:06:37,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 11:06:37,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 11:06:37,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 11:06:37,822 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 11:06:37,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 11:06:37,960 INFO L208 MainTranslator]: Completed translation [2020-10-09 11:06:37,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 11:06:37 WrapperNode [2020-10-09 11:06:37,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 11:06:37,964 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 11:06:37,964 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 11:06:37,965 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 11:06:37,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 11:06:37" (1/1) ... [2020-10-09 11:06:37,988 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 11:06:37" (1/1) ... [2020-10-09 11:06:38,012 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 11:06:38,012 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 11:06:38,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 11:06:38,012 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 11:06:38,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 11:06:37" (1/1) ... [2020-10-09 11:06:38,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 11:06:37" (1/1) ... [2020-10-09 11:06:38,023 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 11:06:37" (1/1) ... [2020-10-09 11:06:38,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 11:06:37" (1/1) ... [2020-10-09 11:06:38,030 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 11:06:37" (1/1) ... [2020-10-09 11:06:38,032 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 11:06:37" (1/1) ... [2020-10-09 11:06:38,035 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 11:06:37" (1/1) ... [2020-10-09 11:06:38,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 11:06:38,039 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 11:06:38,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 11:06:38,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 11:06:38,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 11:06:37" (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 [2020-10-09 11:06:38,106 INFO L130 BoogieDeclarations]: Found specification of procedure allocator [2020-10-09 11:06:38,106 INFO L138 BoogieDeclarations]: Found implementation of procedure allocator [2020-10-09 11:06:38,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-09 11:06:38,106 INFO L130 BoogieDeclarations]: Found specification of procedure de_allocator [2020-10-09 11:06:38,107 INFO L138 BoogieDeclarations]: Found implementation of procedure de_allocator [2020-10-09 11:06:38,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 11:06:38,107 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-09 11:06:38,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 11:06:38,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 11:06:38,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-09 11:06:38,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 11:06:38,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 11:06:38,112 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-09 11:06:38,614 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 11:06:38,615 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-09 11:06:38,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 11:06:38 BoogieIcfgContainer [2020-10-09 11:06:38,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 11:06:38,620 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 11:06:38,620 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 11:06:38,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 11:06:38,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 11:06:37" (1/3) ... [2020-10-09 11:06:38,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50cc532e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 11:06:38, skipping insertion in model container [2020-10-09 11:06:38,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 11:06:37" (2/3) ... [2020-10-09 11:06:38,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50cc532e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 11:06:38, skipping insertion in model container [2020-10-09 11:06:38,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 11:06:38" (3/3) ... [2020-10-09 11:06:38,627 INFO L111 eAbstractionObserver]: Analyzing ICFG time_var_mutex.i [2020-10-09 11:06:38,640 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-09 11:06:38,640 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 11:06:38,648 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-09 11:06:38,650 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 11:06:38,678 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 11:06:38,678 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 11:06:38,678 WARN L313 ript$VariableManager]: TermVariabe allocatorThread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 11:06:38,678 WARN L313 ript$VariableManager]: TermVariabe allocatorThread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 11:06:38,679 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 11:06:38,679 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 11:06:38,679 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 11:06:38,680 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 11:06:38,680 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 11:06:38,680 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 11:06:38,685 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 11:06:38,686 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 11:06:38,686 WARN L313 ript$VariableManager]: TermVariabe de_allocatorThread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 11:06:38,686 WARN L313 ript$VariableManager]: TermVariabe de_allocatorThread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 11:06:38,686 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 11:06:38,686 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 11:06:38,687 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 11:06:38,687 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 11:06:38,691 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 11:06:38,691 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 11:06:38,692 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 11:06:38,692 WARN L313 ript$VariableManager]: TermVariabe allocatorThread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 11:06:38,692 WARN L313 ript$VariableManager]: TermVariabe allocatorThread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 11:06:38,692 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 11:06:38,698 WARN L313 ript$VariableManager]: TermVariabe de_allocatorThread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 11:06:38,698 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 11:06:38,698 WARN L313 ript$VariableManager]: TermVariabe de_allocatorThread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 11:06:38,699 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 11:06:38,699 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 11:06:38,722 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-09 11:06:38,742 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 11:06:38,742 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-09 11:06:38,742 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 11:06:38,742 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 11:06:38,742 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 11:06:38,742 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 11:06:38,742 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 11:06:38,743 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 11:06:38,756 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-09 11:06:38,759 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 84 transitions, 190 flow [2020-10-09 11:06:38,762 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 84 transitions, 190 flow [2020-10-09 11:06:38,765 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 84 transitions, 190 flow [2020-10-09 11:06:38,812 INFO L129 PetriNetUnfolder]: 6/84 cut-off events. [2020-10-09 11:06:38,812 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-09 11:06:38,818 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 84 events. 6/84 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 99 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 54. Up to 3 conditions per place. [2020-10-09 11:06:38,821 INFO L117 LiptonReduction]: Number of co-enabled transitions 886 [2020-10-09 11:06:40,687 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-09 11:06:40,796 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-09 11:06:41,164 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 104 [2020-10-09 11:06:41,316 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-09 11:06:41,493 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-09 11:06:41,662 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-09 11:06:41,687 INFO L132 LiptonReduction]: Checked pairs total: 3969 [2020-10-09 11:06:41,687 INFO L134 LiptonReduction]: Total number of compositions: 69 [2020-10-09 11:06:41,696 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 31 transitions, 84 flow [2020-10-09 11:06:41,717 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 197 states. [2020-10-09 11:06:41,720 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states. [2020-10-09 11:06:41,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-09 11:06:41,727 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 11:06:41,728 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-09 11:06:41,728 INFO L429 AbstractCegarLoop]: === Iteration 1 === [de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 11:06:41,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 11:06:41,735 INFO L82 PathProgramCache]: Analyzing trace with hash 304074620, now seen corresponding path program 1 times [2020-10-09 11:06:41,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 11:06:41,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673155464] [2020-10-09 11:06:41,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 11:06:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 11:06:41,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 11:06:41,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673155464] [2020-10-09 11:06:41,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 11:06:41,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 11:06:41,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721951740] [2020-10-09 11:06:41,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-09 11:06:41,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 11:06:41,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-09 11:06:41,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 11:06:41,980 INFO L87 Difference]: Start difference. First operand 197 states. Second operand 3 states. [2020-10-09 11:06:42,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 11:06:42,016 INFO L93 Difference]: Finished difference Result 197 states and 434 transitions. [2020-10-09 11:06:42,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 11:06:42,020 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-09 11:06:42,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 11:06:42,036 INFO L225 Difference]: With dead ends: 197 [2020-10-09 11:06:42,036 INFO L226 Difference]: Without dead ends: 167 [2020-10-09 11:06:42,037 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 11:06:42,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-09 11:06:42,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2020-10-09 11:06:42,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-09 11:06:42,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 363 transitions. [2020-10-09 11:06:42,097 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 363 transitions. Word has length 5 [2020-10-09 11:06:42,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 11:06:42,097 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 363 transitions. [2020-10-09 11:06:42,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-09 11:06:42,098 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 363 transitions. [2020-10-09 11:06:42,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-09 11:06:42,099 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 11:06:42,099 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-09 11:06:42,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-09 11:06:42,100 INFO L429 AbstractCegarLoop]: === Iteration 2 === [de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 11:06:42,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 11:06:42,100 INFO L82 PathProgramCache]: Analyzing trace with hash 137181791, now seen corresponding path program 1 times [2020-10-09 11:06:42,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 11:06:42,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016909638] [2020-10-09 11:06:42,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 11:06:42,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 11:06:42,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 11:06:42,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016909638] [2020-10-09 11:06:42,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 11:06:42,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 11:06:42,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407911024] [2020-10-09 11:06:42,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-09 11:06:42,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 11:06:42,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-09 11:06:42,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 11:06:42,164 INFO L87 Difference]: Start difference. First operand 167 states and 363 transitions. Second operand 3 states. [2020-10-09 11:06:42,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 11:06:42,233 INFO L93 Difference]: Finished difference Result 182 states and 370 transitions. [2020-10-09 11:06:42,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 11:06:42,236 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-09 11:06:42,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 11:06:42,241 INFO L225 Difference]: With dead ends: 182 [2020-10-09 11:06:42,241 INFO L226 Difference]: Without dead ends: 157 [2020-10-09 11:06:42,242 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 11:06:42,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-09 11:06:42,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 143. [2020-10-09 11:06:42,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-09 11:06:42,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 302 transitions. [2020-10-09 11:06:42,273 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 302 transitions. Word has length 7 [2020-10-09 11:06:42,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 11:06:42,277 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 302 transitions. [2020-10-09 11:06:42,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-09 11:06:42,277 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 302 transitions. [2020-10-09 11:06:42,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-09 11:06:42,278 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 11:06:42,278 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 11:06:42,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-09 11:06:42,278 INFO L429 AbstractCegarLoop]: === Iteration 3 === [de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 11:06:42,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 11:06:42,279 INFO L82 PathProgramCache]: Analyzing trace with hash 610856971, now seen corresponding path program 1 times [2020-10-09 11:06:42,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 11:06:42,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786352507] [2020-10-09 11:06:42,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 11:06:42,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 11:06:42,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 11:06:42,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786352507] [2020-10-09 11:06:42,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 11:06:42,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 11:06:42,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593661468] [2020-10-09 11:06:42,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-09 11:06:42,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 11:06:42,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-09 11:06:42,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 11:06:42,369 INFO L87 Difference]: Start difference. First operand 143 states and 302 transitions. Second operand 3 states. [2020-10-09 11:06:42,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 11:06:42,387 INFO L93 Difference]: Finished difference Result 138 states and 278 transitions. [2020-10-09 11:06:42,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 11:06:42,387 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-09 11:06:42,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 11:06:42,388 INFO L225 Difference]: With dead ends: 138 [2020-10-09 11:06:42,388 INFO L226 Difference]: Without dead ends: 84 [2020-10-09 11:06:42,389 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 11:06:42,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-09 11:06:42,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-10-09 11:06:42,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-09 11:06:42,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 151 transitions. [2020-10-09 11:06:42,396 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 151 transitions. Word has length 8 [2020-10-09 11:06:42,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 11:06:42,396 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 151 transitions. [2020-10-09 11:06:42,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-09 11:06:42,397 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 151 transitions. [2020-10-09 11:06:42,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 11:06:42,398 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 11:06:42,398 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 11:06:42,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-09 11:06:42,398 INFO L429 AbstractCegarLoop]: === Iteration 4 === [de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 11:06:42,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 11:06:42,399 INFO L82 PathProgramCache]: Analyzing trace with hash -2030863522, now seen corresponding path program 1 times [2020-10-09 11:06:42,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 11:06:42,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874654486] [2020-10-09 11:06:42,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 11:06:42,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 11:06:42,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 11:06:42,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874654486] [2020-10-09 11:06:42,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 11:06:42,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-09 11:06:42,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834590283] [2020-10-09 11:06:42,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-09 11:06:42,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 11:06:42,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-09 11:06:42,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-09 11:06:42,504 INFO L87 Difference]: Start difference. First operand 84 states and 151 transitions. Second operand 6 states. [2020-10-09 11:06:42,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 11:06:42,583 INFO L93 Difference]: Finished difference Result 76 states and 127 transitions. [2020-10-09 11:06:42,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 11:06:42,584 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-09 11:06:42,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 11:06:42,585 INFO L225 Difference]: With dead ends: 76 [2020-10-09 11:06:42,585 INFO L226 Difference]: Without dead ends: 68 [2020-10-09 11:06:42,586 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-09 11:06:42,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-09 11:06:42,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-09 11:06:42,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-09 11:06:42,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 111 transitions. [2020-10-09 11:06:42,594 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 111 transitions. Word has length 12 [2020-10-09 11:06:42,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 11:06:42,594 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 111 transitions. [2020-10-09 11:06:42,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-09 11:06:42,595 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 111 transitions. [2020-10-09 11:06:42,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 11:06:42,596 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 11:06:42,596 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 11:06:42,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-09 11:06:42,596 INFO L429 AbstractCegarLoop]: === Iteration 5 === [de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 11:06:42,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 11:06:42,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1821491492, now seen corresponding path program 2 times [2020-10-09 11:06:42,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 11:06:42,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105416343] [2020-10-09 11:06:42,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 11:06:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 11:06:42,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 11:06:42,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105416343] [2020-10-09 11:06:42,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 11:06:42,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 11:06:42,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137956324] [2020-10-09 11:06:42,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-09 11:06:42,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 11:06:42,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-09 11:06:42,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 11:06:42,644 INFO L87 Difference]: Start difference. First operand 68 states and 111 transitions. Second operand 3 states. [2020-10-09 11:06:42,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 11:06:42,650 INFO L93 Difference]: Finished difference Result 26 states and 40 transitions. [2020-10-09 11:06:42,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 11:06:42,651 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-09 11:06:42,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 11:06:42,651 INFO L225 Difference]: With dead ends: 26 [2020-10-09 11:06:42,652 INFO L226 Difference]: Without dead ends: 0 [2020-10-09 11:06:42,652 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 11:06:42,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-09 11:06:42,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-09 11:06:42,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-09 11:06:42,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-09 11:06:42,653 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-10-09 11:06:42,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 11:06:42,654 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-09 11:06:42,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-09 11:06:42,654 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-09 11:06:42,654 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-09 11:06:42,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-09 11:06:42,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 11:06:42 BasicIcfg [2020-10-09 11:06:42,658 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 11:06:42,660 INFO L168 Benchmark]: Toolchain (without parser) took 5407.81 ms. Allocated memory was 246.4 MB in the beginning and 363.3 MB in the end (delta: 116.9 MB). Free memory was 198.2 MB in the beginning and 148.5 MB in the end (delta: 49.7 MB). Peak memory consumption was 166.6 MB. Max. memory is 14.2 GB. [2020-10-09 11:06:42,661 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 246.4 MB. Free memory is still 220.3 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 11:06:42,662 INFO L168 Benchmark]: CACSL2BoogieTranslator took 708.63 ms. Allocated memory was 246.4 MB in the beginning and 298.3 MB in the end (delta: 51.9 MB). Free memory was 198.2 MB in the beginning and 254.2 MB in the end (delta: -56.0 MB). Peak memory consumption was 26.8 MB. Max. memory is 14.2 GB. [2020-10-09 11:06:42,663 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.23 ms. Allocated memory is still 298.3 MB. Free memory was 254.2 MB in the beginning and 251.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 11:06:42,664 INFO L168 Benchmark]: Boogie Preprocessor took 26.11 ms. Allocated memory is still 298.3 MB. Free memory was 251.7 MB in the beginning and 249.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 11:06:42,664 INFO L168 Benchmark]: RCFGBuilder took 579.87 ms. Allocated memory is still 298.3 MB. Free memory was 249.2 MB in the beginning and 224.8 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 14.2 GB. [2020-10-09 11:06:42,666 INFO L168 Benchmark]: TraceAbstraction took 4038.51 ms. Allocated memory was 298.3 MB in the beginning and 363.3 MB in the end (delta: 65.0 MB). Free memory was 224.8 MB in the beginning and 148.5 MB in the end (delta: 76.4 MB). Peak memory consumption was 141.4 MB. Max. memory is 14.2 GB. [2020-10-09 11:06:42,685 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 246.4 MB. Free memory is still 220.3 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 708.63 ms. Allocated memory was 246.4 MB in the beginning and 298.3 MB in the end (delta: 51.9 MB). Free memory was 198.2 MB in the beginning and 254.2 MB in the end (delta: -56.0 MB). Peak memory consumption was 26.8 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 48.23 ms. Allocated memory is still 298.3 MB. Free memory was 254.2 MB in the beginning and 251.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.11 ms. Allocated memory is still 298.3 MB. Free memory was 251.7 MB in the beginning and 249.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 579.87 ms. Allocated memory is still 298.3 MB. Free memory was 249.2 MB in the beginning and 224.8 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 14.2 GB. * TraceAbstraction took 4038.51 ms. Allocated memory was 298.3 MB in the beginning and 363.3 MB in the end (delta: 65.0 MB). Free memory was 224.8 MB in the beginning and 148.5 MB in the end (delta: 76.4 MB). Peak memory consumption was 141.4 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 638 VarBasedMoverChecksPositive, 61 VarBasedMoverChecksNegative, 19 SemBasedMoverChecksPositive, 42 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 165 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.9s, 84 PlacesBefore, 34 PlacesAfterwards, 84 TransitionsBefore, 31 TransitionsAfterwards, 886 CoEnabledTransitionPairs, 7 FixpointIterations, 40 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 5 ConcurrentYvCompositions, 3 ChoiceCompositions, 69 TotalNumberOfCompositions, 3969 MoverChecksTotal - PositiveResult [Line: 691]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 699]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 78 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.9s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 125 SDtfs, 90 SDslu, 89 SDs, 0 SdLazy, 45 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=197occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 14 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 778 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...