/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/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe036_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 01:46:49,555 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 01:46:49,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 01:46:49,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 01:46:49,595 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 01:46:49,606 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 01:46:49,608 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 01:46:49,610 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 01:46:49,614 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 01:46:49,615 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 01:46:49,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 01:46:49,620 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 01:46:49,620 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 01:46:49,622 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 01:46:49,622 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 01:46:49,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 01:46:49,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 01:46:49,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 01:46:49,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 01:46:49,634 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 01:46:49,636 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 01:46:49,638 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 01:46:49,639 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 01:46:49,640 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 01:46:49,645 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 01:46:49,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 01:46:49,650 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 01:46:49,651 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 01:46:49,652 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 01:46:49,653 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 01:46:49,654 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 01:46:49,654 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 01:46:49,654 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 01:46:49,655 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 01:46:49,656 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 01:46:49,657 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 01:46:49,658 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-PN-SemanticLbe.epf [2020-10-16 01:46:49,692 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 01:46:49,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 01:46:49,694 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 01:46:49,694 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 01:46:49,695 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 01:46:49,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 01:46:49,695 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 01:46:49,695 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 01:46:49,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 01:46:49,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 01:46:49,697 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 01:46:49,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 01:46:49,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 01:46:49,698 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 01:46:49,698 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 01:46:49,698 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 01:46:49,698 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 01:46:49,698 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 01:46:49,699 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 01:46:49,699 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 01:46:49,699 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 01:46:49,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:46:49,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 01:46:49,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 01:46:49,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 01:46:49,700 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 01:46:49,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 01:46:49,700 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 01:46:49,700 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 01:46:49,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 01:46:49,989 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 01:46:49,993 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 01:46:49,997 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 01:46:49,997 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 01:46:49,998 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe036_tso.oepc.i [2020-10-16 01:46:50,059 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2742906c8/0e9233b37f5a4a5baeb45a473005a4db/FLAG48346d3ab [2020-10-16 01:46:50,567 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 01:46:50,568 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe036_tso.oepc.i [2020-10-16 01:46:50,588 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2742906c8/0e9233b37f5a4a5baeb45a473005a4db/FLAG48346d3ab [2020-10-16 01:46:50,932 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2742906c8/0e9233b37f5a4a5baeb45a473005a4db [2020-10-16 01:46:50,941 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 01:46:50,943 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 01:46:50,945 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 01:46:50,945 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 01:46:50,948 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 01:46:50,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:46:50" (1/1) ... [2020-10-16 01:46:50,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@732d236d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:50, skipping insertion in model container [2020-10-16 01:46:50,953 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:46:50" (1/1) ... [2020-10-16 01:46:50,960 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 01:46:51,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 01:46:51,532 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:46:51,549 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 01:46:51,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:46:51,693 INFO L208 MainTranslator]: Completed translation [2020-10-16 01:46:51,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:51 WrapperNode [2020-10-16 01:46:51,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 01:46:51,696 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 01:46:51,696 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 01:46:51,697 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 01:46:51,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:51" (1/1) ... [2020-10-16 01:46:51,725 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:51" (1/1) ... [2020-10-16 01:46:51,745 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 01:46:51,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 01:46:51,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 01:46:51,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 01:46:51,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:51" (1/1) ... [2020-10-16 01:46:51,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:51" (1/1) ... [2020-10-16 01:46:51,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:51" (1/1) ... [2020-10-16 01:46:51,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:51" (1/1) ... [2020-10-16 01:46:51,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:51" (1/1) ... [2020-10-16 01:46:51,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:51" (1/1) ... [2020-10-16 01:46:51,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:51" (1/1) ... [2020-10-16 01:46:51,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 01:46:51,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 01:46:51,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 01:46:51,771 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 01:46:51,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:51" (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 [2020-10-16 01:46:51,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 01:46:51,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 01:46:51,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 01:46:51,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 01:46:51,851 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 01:46:51,852 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 01:46:51,852 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 01:46:51,852 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 01:46:51,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 01:46:51,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 01:46:51,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 01:46:51,856 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 01:46:52,157 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 01:46:52,158 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 01:46:52,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:46:52 BoogieIcfgContainer [2020-10-16 01:46:52,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 01:46:52,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 01:46:52,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 01:46:52,165 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 01:46:52,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:46:50" (1/3) ... [2020-10-16 01:46:52,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ad7b30a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:46:52, skipping insertion in model container [2020-10-16 01:46:52,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:51" (2/3) ... [2020-10-16 01:46:52,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ad7b30a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:46:52, skipping insertion in model container [2020-10-16 01:46:52,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:46:52" (3/3) ... [2020-10-16 01:46:52,169 INFO L111 eAbstractionObserver]: Analyzing ICFG safe036_tso.oepc.i [2020-10-16 01:46:52,181 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 01:46:52,188 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 01:46:52,189 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 01:46:52,219 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:52,219 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:52,219 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:52,219 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:52,220 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:52,221 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:52,221 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:52,221 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:52,222 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:52,222 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:52,223 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:52,223 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:52,227 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:52,227 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:52,227 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:52,228 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:52,233 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:52,233 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:52,234 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:52,234 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:52,257 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-16 01:46:52,278 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:46:52,278 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:46:52,278 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:46:52,279 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:46:52,279 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:46:52,279 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:46:52,279 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:46:52,279 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:46:52,293 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 122 flow [2020-10-16 01:46:52,337 INFO L129 PetriNetUnfolder]: 2/54 cut-off events. [2020-10-16 01:46:52,337 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:46:52,342 INFO L80 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 54 events. 2/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-10-16 01:46:52,342 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 56 transitions, 122 flow [2020-10-16 01:46:52,348 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 45 transitions, 96 flow [2020-10-16 01:46:52,351 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:46:52,353 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 45 transitions, 96 flow [2020-10-16 01:46:52,356 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 45 transitions, 96 flow [2020-10-16 01:46:52,357 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 51 places, 45 transitions, 96 flow [2020-10-16 01:46:52,373 INFO L129 PetriNetUnfolder]: 1/45 cut-off events. [2020-10-16 01:46:52,373 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:46:52,374 INFO L80 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2020-10-16 01:46:52,375 INFO L117 LiptonReduction]: Number of co-enabled transitions 456 [2020-10-16 01:46:53,397 INFO L132 LiptonReduction]: Checked pairs total: 818 [2020-10-16 01:46:53,398 INFO L134 LiptonReduction]: Total number of compositions: 38 [2020-10-16 01:46:53,401 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1052 [2020-10-16 01:46:53,408 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2020-10-16 01:46:53,409 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:46:53,409 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:46:53,410 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-16 01:46:53,410 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:46:53,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:46:53,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1672959994, now seen corresponding path program 1 times [2020-10-16 01:46:53,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:46:53,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532445058] [2020-10-16 01:46:53,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:46:53,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:46:53,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:46:53,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532445058] [2020-10-16 01:46:53,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:46:53,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:46:53,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789084248] [2020-10-16 01:46:53,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:46:53,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:46:53,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:46:53,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:46:53,703 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 94 [2020-10-16 01:46:53,706 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 12 transitions, 30 flow. Second operand 4 states. [2020-10-16 01:46:53,706 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:46:53,706 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 94 [2020-10-16 01:46:53,708 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:46:53,756 INFO L129 PetriNetUnfolder]: 6/27 cut-off events. [2020-10-16 01:46:53,756 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:46:53,757 INFO L80 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 27 events. 6/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 56 event pairs, 0 based on Foata normal form. 4/30 useless extension candidates. Maximal degree in co-relation 46. Up to 11 conditions per place. [2020-10-16 01:46:53,758 INFO L132 encePairwiseOnDemand]: 89/94 looper letters, 5 selfloop transitions, 4 changer transitions 1/17 dead transitions. [2020-10-16 01:46:53,758 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 17 transitions, 60 flow [2020-10-16 01:46:53,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:46:53,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:46:53,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 280 transitions. [2020-10-16 01:46:53,775 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7446808510638298 [2020-10-16 01:46:53,776 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 280 transitions. [2020-10-16 01:46:53,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 280 transitions. [2020-10-16 01:46:53,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:46:53,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 280 transitions. [2020-10-16 01:46:53,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:46:53,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:46:53,793 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:46:53,796 INFO L185 Difference]: Start difference. First operand has 19 places, 12 transitions, 30 flow. Second operand 4 states and 280 transitions. [2020-10-16 01:46:53,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 17 transitions, 60 flow [2020-10-16 01:46:53,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 17 transitions, 58 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:46:53,803 INFO L241 Difference]: Finished difference. Result has 22 places, 14 transitions, 54 flow [2020-10-16 01:46:53,806 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=54, PETRI_PLACES=22, PETRI_TRANSITIONS=14} [2020-10-16 01:46:53,807 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, 3 predicate places. [2020-10-16 01:46:53,808 INFO L481 AbstractCegarLoop]: Abstraction has has 22 places, 14 transitions, 54 flow [2020-10-16 01:46:53,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:46:53,808 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:46:53,808 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:46:53,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 01:46:53,809 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:46:53,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:46:53,810 INFO L82 PathProgramCache]: Analyzing trace with hash 340114245, now seen corresponding path program 1 times [2020-10-16 01:46:53,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:46:53,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445247814] [2020-10-16 01:46:53,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:46:53,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:46:53,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:46:53,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445247814] [2020-10-16 01:46:53,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:46:53,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:46:53,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992798619] [2020-10-16 01:46:53,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:46:53,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:46:53,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:46:53,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:46:53,899 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 94 [2020-10-16 01:46:53,899 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 14 transitions, 54 flow. Second operand 5 states. [2020-10-16 01:46:53,899 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:46:53,899 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 94 [2020-10-16 01:46:53,900 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:46:53,948 INFO L129 PetriNetUnfolder]: 2/18 cut-off events. [2020-10-16 01:46:53,948 INFO L130 PetriNetUnfolder]: For 11/13 co-relation queries the response was YES. [2020-10-16 01:46:53,948 INFO L80 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 18 events. 2/18 cut-off events. For 11/13 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 17 event pairs, 0 based on Foata normal form. 5/23 useless extension candidates. Maximal degree in co-relation 44. Up to 8 conditions per place. [2020-10-16 01:46:53,949 INFO L132 encePairwiseOnDemand]: 89/94 looper letters, 1 selfloop transitions, 6 changer transitions 1/15 dead transitions. [2020-10-16 01:46:53,949 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 15 transitions, 75 flow [2020-10-16 01:46:53,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:46:53,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:46:53,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 345 transitions. [2020-10-16 01:46:53,953 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7340425531914894 [2020-10-16 01:46:53,953 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 345 transitions. [2020-10-16 01:46:53,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 345 transitions. [2020-10-16 01:46:53,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:46:53,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 345 transitions. [2020-10-16 01:46:53,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:46:53,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:46:53,957 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:46:53,958 INFO L185 Difference]: Start difference. First operand has 22 places, 14 transitions, 54 flow. Second operand 5 states and 345 transitions. [2020-10-16 01:46:53,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 15 transitions, 75 flow [2020-10-16 01:46:53,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 15 transitions, 66 flow, removed 1 selfloop flow, removed 2 redundant places. [2020-10-16 01:46:53,959 INFO L241 Difference]: Finished difference. Result has 26 places, 14 transitions, 70 flow [2020-10-16 01:46:53,960 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=70, PETRI_PLACES=26, PETRI_TRANSITIONS=14} [2020-10-16 01:46:53,960 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, 7 predicate places. [2020-10-16 01:46:53,961 INFO L481 AbstractCegarLoop]: Abstraction has has 26 places, 14 transitions, 70 flow [2020-10-16 01:46:53,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:46:53,961 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:46:53,961 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:46:53,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 01:46:53,962 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:46:53,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:46:53,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1680060485, now seen corresponding path program 1 times [2020-10-16 01:46:53,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:46:53,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114263685] [2020-10-16 01:46:53,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:46:53,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:46:54,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:46:54,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114263685] [2020-10-16 01:46:54,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:46:54,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:46:54,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422121830] [2020-10-16 01:46:54,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:46:54,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:46:54,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:46:54,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:46:54,048 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 94 [2020-10-16 01:46:54,048 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 14 transitions, 70 flow. Second operand 4 states. [2020-10-16 01:46:54,049 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:46:54,049 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 94 [2020-10-16 01:46:54,049 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:46:54,073 INFO L129 PetriNetUnfolder]: 2/22 cut-off events. [2020-10-16 01:46:54,073 INFO L130 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2020-10-16 01:46:54,074 INFO L80 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 22 events. 2/22 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 27 event pairs, 0 based on Foata normal form. 1/23 useless extension candidates. Maximal degree in co-relation 58. Up to 10 conditions per place. [2020-10-16 01:46:54,074 INFO L132 encePairwiseOnDemand]: 91/94 looper letters, 3 selfloop transitions, 1 changer transitions 1/15 dead transitions. [2020-10-16 01:46:54,074 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 15 transitions, 82 flow [2020-10-16 01:46:54,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:46:54,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:46:54,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 290 transitions. [2020-10-16 01:46:54,077 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7712765957446809 [2020-10-16 01:46:54,077 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 290 transitions. [2020-10-16 01:46:54,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 290 transitions. [2020-10-16 01:46:54,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:46:54,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 290 transitions. [2020-10-16 01:46:54,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:46:54,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:46:54,084 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:46:54,084 INFO L185 Difference]: Start difference. First operand has 26 places, 14 transitions, 70 flow. Second operand 4 states and 290 transitions. [2020-10-16 01:46:54,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 15 transitions, 82 flow [2020-10-16 01:46:54,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 15 transitions, 52 flow, removed 5 selfloop flow, removed 7 redundant places. [2020-10-16 01:46:54,087 INFO L241 Difference]: Finished difference. Result has 24 places, 14 transitions, 47 flow [2020-10-16 01:46:54,087 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=47, PETRI_PLACES=24, PETRI_TRANSITIONS=14} [2020-10-16 01:46:54,087 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, 5 predicate places. [2020-10-16 01:46:54,087 INFO L481 AbstractCegarLoop]: Abstraction has has 24 places, 14 transitions, 47 flow [2020-10-16 01:46:54,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:46:54,088 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:46:54,088 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:46:54,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 01:46:54,088 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:46:54,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:46:54,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1975126419, now seen corresponding path program 2 times [2020-10-16 01:46:54,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:46:54,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947893310] [2020-10-16 01:46:54,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:46:54,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:46:54,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:46:54,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947893310] [2020-10-16 01:46:54,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:46:54,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:46:54,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960630669] [2020-10-16 01:46:54,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:46:54,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:46:54,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:46:54,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:46:54,163 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 94 [2020-10-16 01:46:54,163 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 14 transitions, 47 flow. Second operand 4 states. [2020-10-16 01:46:54,163 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:46:54,163 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 94 [2020-10-16 01:46:54,164 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:46:54,182 INFO L129 PetriNetUnfolder]: 1/19 cut-off events. [2020-10-16 01:46:54,183 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2020-10-16 01:46:54,184 INFO L80 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 19 events. 1/19 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 21 event pairs, 0 based on Foata normal form. 1/19 useless extension candidates. Maximal degree in co-relation 38. Up to 4 conditions per place. [2020-10-16 01:46:54,184 INFO L132 encePairwiseOnDemand]: 91/94 looper letters, 0 selfloop transitions, 0 changer transitions 14/14 dead transitions. [2020-10-16 01:46:54,185 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 14 transitions, 53 flow [2020-10-16 01:46:54,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:46:54,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:46:54,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 293 transitions. [2020-10-16 01:46:54,187 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7792553191489362 [2020-10-16 01:46:54,187 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 293 transitions. [2020-10-16 01:46:54,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 293 transitions. [2020-10-16 01:46:54,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:46:54,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 293 transitions. [2020-10-16 01:46:54,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:46:54,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:46:54,192 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:46:54,192 INFO L185 Difference]: Start difference. First operand has 24 places, 14 transitions, 47 flow. Second operand 4 states and 293 transitions. [2020-10-16 01:46:54,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 14 transitions, 53 flow [2020-10-16 01:46:54,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 14 transitions, 52 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:46:54,193 INFO L241 Difference]: Finished difference. Result has 24 places, 0 transitions, 0 flow [2020-10-16 01:46:54,194 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=24, PETRI_TRANSITIONS=0} [2020-10-16 01:46:54,196 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, 5 predicate places. [2020-10-16 01:46:54,196 INFO L481 AbstractCegarLoop]: Abstraction has has 24 places, 0 transitions, 0 flow [2020-10-16 01:46:54,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:46:54,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 01:46:54,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:46:54 BasicIcfg [2020-10-16 01:46:54,204 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 01:46:54,207 INFO L168 Benchmark]: Toolchain (without parser) took 3263.03 ms. Allocated memory was 249.0 MB in the beginning and 353.4 MB in the end (delta: 104.3 MB). Free memory was 204.2 MB in the beginning and 194.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 114.1 MB. Max. memory is 14.2 GB. [2020-10-16 01:46:54,207 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 249.0 MB. Free memory is still 225.4 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 01:46:54,209 INFO L168 Benchmark]: CACSL2BoogieTranslator took 750.70 ms. Allocated memory was 249.0 MB in the beginning and 309.9 MB in the end (delta: 60.8 MB). Free memory was 204.2 MB in the beginning and 260.8 MB in the end (delta: -56.6 MB). Peak memory consumption was 26.8 MB. Max. memory is 14.2 GB. [2020-10-16 01:46:54,209 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.02 ms. Allocated memory is still 309.9 MB. Free memory was 260.8 MB in the beginning and 258.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:46:54,210 INFO L168 Benchmark]: Boogie Preprocessor took 24.30 ms. Allocated memory is still 309.9 MB. Free memory is still 258.2 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 01:46:54,211 INFO L168 Benchmark]: RCFGBuilder took 390.30 ms. Allocated memory is still 309.9 MB. Free memory was 258.2 MB in the beginning and 236.4 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-16 01:46:54,212 INFO L168 Benchmark]: TraceAbstraction took 2042.41 ms. Allocated memory was 309.9 MB in the beginning and 353.4 MB in the end (delta: 43.5 MB). Free memory was 236.4 MB in the beginning and 194.4 MB in the end (delta: 42.0 MB). Peak memory consumption was 85.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:46:54,216 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 249.0 MB. Free memory is still 225.4 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 750.70 ms. Allocated memory was 249.0 MB in the beginning and 309.9 MB in the end (delta: 60.8 MB). Free memory was 204.2 MB in the beginning and 260.8 MB in the end (delta: -56.6 MB). Peak memory consumption was 26.8 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 49.02 ms. Allocated memory is still 309.9 MB. Free memory was 260.8 MB in the beginning and 258.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 24.30 ms. Allocated memory is still 309.9 MB. Free memory is still 258.2 MB. There was no memory consumed. Max. memory is 14.2 GB. * RCFGBuilder took 390.30 ms. Allocated memory is still 309.9 MB. Free memory was 258.2 MB in the beginning and 236.4 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2042.41 ms. Allocated memory was 309.9 MB in the beginning and 353.4 MB in the end (delta: 43.5 MB). Free memory was 236.4 MB in the beginning and 194.4 MB in the end (delta: 42.0 MB). Peak memory consumption was 85.5 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 317 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 17 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 28 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.0s, 51 PlacesBefore, 19 PlacesAfterwards, 45 TransitionsBefore, 12 TransitionsAfterwards, 456 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 38 TotalNumberOfCompositions, 818 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.1s, HoareTripleCheckerStatistics: 12 SDtfs, 5 SDslu, 7 SDs, 0 SdLazy, 33 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 861 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...