/usr/bin/java -Xmx8000000000 -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-wmm/safe020_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-17 00:20:01,536 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-17 00:20:01,540 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-17 00:20:01,567 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-17 00:20:01,567 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-17 00:20:01,569 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-17 00:20:01,570 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-17 00:20:01,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-17 00:20:01,574 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-17 00:20:01,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-17 00:20:01,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-17 00:20:01,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-17 00:20:01,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-17 00:20:01,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-17 00:20:01,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-17 00:20:01,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-17 00:20:01,583 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-17 00:20:01,584 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-17 00:20:01,586 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-17 00:20:01,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-17 00:20:01,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-17 00:20:01,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-17 00:20:01,592 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-17 00:20:01,593 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-17 00:20:01,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-17 00:20:01,596 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-17 00:20:01,597 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-17 00:20:01,598 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-17 00:20:01,598 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-17 00:20:01,599 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-17 00:20:01,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-17 00:20:01,601 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-17 00:20:01,602 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-17 00:20:01,603 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-17 00:20:01,604 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-17 00:20:01,604 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-17 00:20:01,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-17 00:20:01,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-17 00:20:01,605 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-17 00:20:01,607 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-17 00:20:01,608 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-17 00:20:01,609 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 [2020-09-17 00:20:01,643 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-17 00:20:01,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-17 00:20:01,645 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-17 00:20:01,645 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-17 00:20:01,646 INFO L138 SettingsManager]: * Use SBE=true [2020-09-17 00:20:01,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-17 00:20:01,646 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-17 00:20:01,646 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-17 00:20:01,646 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-17 00:20:01,647 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-17 00:20:01,647 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-17 00:20:01,647 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-17 00:20:01,647 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-17 00:20:01,647 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-17 00:20:01,648 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-17 00:20:01,648 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-17 00:20:01,648 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-17 00:20:01,648 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-17 00:20:01,648 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-17 00:20:01,649 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-17 00:20:01,649 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-17 00:20:01,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-17 00:20:01,649 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-17 00:20:01,650 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-17 00:20:01,650 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-17 00:20:01,650 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-17 00:20:01,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-17 00:20:01,650 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-17 00:20:01,651 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-17 00:20:01,651 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-17 00:20:02,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-17 00:20:02,119 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-17 00:20:02,124 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-17 00:20:02,126 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-17 00:20:02,126 INFO L275 PluginConnector]: CDTParser initialized [2020-09-17 00:20:02,127 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.oepc.i [2020-09-17 00:20:02,208 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5cda9fdf/445691ff684e41199a7a8fc1666dbc14/FLAGbd409ce57 [2020-09-17 00:20:02,854 INFO L306 CDTParser]: Found 1 translation units. [2020-09-17 00:20:02,855 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_tso.oepc.i [2020-09-17 00:20:02,875 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5cda9fdf/445691ff684e41199a7a8fc1666dbc14/FLAGbd409ce57 [2020-09-17 00:20:03,118 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5cda9fdf/445691ff684e41199a7a8fc1666dbc14 [2020-09-17 00:20:03,132 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-17 00:20:03,137 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-17 00:20:03,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-17 00:20:03,139 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-17 00:20:03,143 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-17 00:20:03,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 12:20:03" (1/1) ... [2020-09-17 00:20:03,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4116cc5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:20:03, skipping insertion in model container [2020-09-17 00:20:03,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 12:20:03" (1/1) ... [2020-09-17 00:20:03,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-17 00:20:03,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-17 00:20:03,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-17 00:20:03,797 INFO L203 MainTranslator]: Completed pre-run [2020-09-17 00:20:03,843 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-17 00:20:03,939 INFO L208 MainTranslator]: Completed translation [2020-09-17 00:20:03,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:20:03 WrapperNode [2020-09-17 00:20:03,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-17 00:20:03,942 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-17 00:20:03,942 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-17 00:20:03,943 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-17 00:20:03,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:20:03" (1/1) ... [2020-09-17 00:20:03,976 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:20:03" (1/1) ... [2020-09-17 00:20:04,005 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-17 00:20:04,005 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-17 00:20:04,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-17 00:20:04,006 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-17 00:20:04,018 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:20:03" (1/1) ... [2020-09-17 00:20:04,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:20:03" (1/1) ... [2020-09-17 00:20:04,021 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:20:03" (1/1) ... [2020-09-17 00:20:04,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:20:03" (1/1) ... [2020-09-17 00:20:04,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:20:03" (1/1) ... [2020-09-17 00:20:04,032 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:20:03" (1/1) ... [2020-09-17 00:20:04,035 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:20:03" (1/1) ... [2020-09-17 00:20:04,041 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-17 00:20:04,045 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-17 00:20:04,045 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-17 00:20:04,046 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-17 00:20:04,049 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:20:03" (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 [2020-09-17 00:20:04,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-17 00:20:04,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-17 00:20:04,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-17 00:20:04,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-17 00:20:04,127 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-17 00:20:04,127 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-17 00:20:04,127 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-17 00:20:04,128 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-17 00:20:04,128 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-17 00:20:04,128 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-17 00:20:04,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-17 00:20:04,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-17 00:20:04,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-17 00:20:04,131 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-17 00:20:04,521 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-17 00:20:04,521 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-17 00:20:04,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 12:20:04 BoogieIcfgContainer [2020-09-17 00:20:04,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-17 00:20:04,528 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-17 00:20:04,529 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-17 00:20:04,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-17 00:20:04,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 12:20:03" (1/3) ... [2020-09-17 00:20:04,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb5d093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 12:20:04, skipping insertion in model container [2020-09-17 00:20:04,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:20:03" (2/3) ... [2020-09-17 00:20:04,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb5d093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 12:20:04, skipping insertion in model container [2020-09-17 00:20:04,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 12:20:04" (3/3) ... [2020-09-17 00:20:04,538 INFO L109 eAbstractionObserver]: Analyzing ICFG safe020_tso.oepc.i [2020-09-17 00:20:04,551 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-17 00:20:04,551 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-17 00:20:04,562 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-17 00:20:04,563 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-17 00:20:04,600 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:20:04,600 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:20:04,600 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:20:04,601 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:20:04,602 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:20:04,602 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:20:04,603 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:20:04,603 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:20:04,603 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:20:04,603 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:20:04,604 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:20:04,604 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:20:04,605 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:20:04,605 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:20:04,605 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:20:04,605 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:20:04,606 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:20:04,606 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:20:04,611 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:20:04,612 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:20:04,612 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:20:04,612 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:20:04,619 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:20:04,620 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:20:04,620 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:20:04,620 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:20:04,623 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:20:04,624 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:20:04,624 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:20:04,624 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:20:04,650 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-17 00:20:04,680 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 00:20:04,680 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 00:20:04,681 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-17 00:20:04,681 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 00:20:04,681 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 00:20:04,681 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 00:20:04,681 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 00:20:04,682 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 00:20:04,703 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-09-17 00:20:04,706 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-09-17 00:20:04,763 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-09-17 00:20:04,763 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-17 00:20:04,770 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-09-17 00:20:04,773 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-09-17 00:20:04,796 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-09-17 00:20:04,797 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-17 00:20:04,797 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-09-17 00:20:04,800 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-09-17 00:20:04,801 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-17 00:20:06,387 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2244 [2020-09-17 00:20:06,387 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-09-17 00:20:06,393 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-17 00:20:06,419 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-09-17 00:20:06,422 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-09-17 00:20:06,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-17 00:20:06,432 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:20:06,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:20:06,434 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:20:06,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:20:06,442 INFO L82 PathProgramCache]: Analyzing trace with hash 278619754, now seen corresponding path program 1 times [2020-09-17 00:20:06,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:20:06,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577528073] [2020-09-17 00:20:06,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:20:06,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:20:06,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:20:06,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577528073] [2020-09-17 00:20:06,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:20:06,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 00:20:06,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772542578] [2020-09-17 00:20:06,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-17 00:20:06,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:20:06,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-17 00:20:06,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-17 00:20:06,701 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-09-17 00:20:06,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:20:06,738 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-09-17 00:20:06,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-17 00:20:06,740 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-09-17 00:20:06,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:20:06,760 INFO L225 Difference]: With dead ends: 274 [2020-09-17 00:20:06,761 INFO L226 Difference]: Without dead ends: 226 [2020-09-17 00:20:06,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-17 00:20:06,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-09-17 00:20:06,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-09-17 00:20:06,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-17 00:20:06,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-09-17 00:20:06,842 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-09-17 00:20:06,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:20:06,843 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-09-17 00:20:06,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-17 00:20:06,844 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-09-17 00:20:06,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-17 00:20:06,845 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:20:06,845 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:20:06,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-17 00:20:06,846 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:20:06,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:20:06,846 INFO L82 PathProgramCache]: Analyzing trace with hash 47263938, now seen corresponding path program 1 times [2020-09-17 00:20:06,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:20:06,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639522273] [2020-09-17 00:20:06,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:20:06,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:20:07,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:20:07,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639522273] [2020-09-17 00:20:07,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:20:07,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 00:20:07,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042845430] [2020-09-17 00:20:07,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 00:20:07,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:20:07,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 00:20:07,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 00:20:07,018 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 4 states. [2020-09-17 00:20:07,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:20:07,054 INFO L93 Difference]: Finished difference Result 250 states and 668 transitions. [2020-09-17 00:20:07,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 00:20:07,055 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-17 00:20:07,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:20:07,058 INFO L225 Difference]: With dead ends: 250 [2020-09-17 00:20:07,058 INFO L226 Difference]: Without dead ends: 202 [2020-09-17 00:20:07,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-17 00:20:07,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-17 00:20:07,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-09-17 00:20:07,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-17 00:20:07,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 552 transitions. [2020-09-17 00:20:07,079 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 552 transitions. Word has length 9 [2020-09-17 00:20:07,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:20:07,080 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 552 transitions. [2020-09-17 00:20:07,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 00:20:07,080 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 552 transitions. [2020-09-17 00:20:07,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-17 00:20:07,082 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:20:07,082 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:20:07,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-17 00:20:07,083 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:20:07,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:20:07,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1465143248, now seen corresponding path program 1 times [2020-09-17 00:20:07,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:20:07,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170320577] [2020-09-17 00:20:07,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:20:07,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:20:07,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:20:07,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170320577] [2020-09-17 00:20:07,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:20:07,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 00:20:07,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141278111] [2020-09-17 00:20:07,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 00:20:07,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:20:07,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 00:20:07,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-17 00:20:07,224 INFO L87 Difference]: Start difference. First operand 202 states and 552 transitions. Second operand 5 states. [2020-09-17 00:20:07,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:20:07,278 INFO L93 Difference]: Finished difference Result 262 states and 697 transitions. [2020-09-17 00:20:07,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 00:20:07,278 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-09-17 00:20:07,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:20:07,280 INFO L225 Difference]: With dead ends: 262 [2020-09-17 00:20:07,281 INFO L226 Difference]: Without dead ends: 154 [2020-09-17 00:20:07,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-17 00:20:07,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-09-17 00:20:07,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-09-17 00:20:07,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-09-17 00:20:07,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 392 transitions. [2020-09-17 00:20:07,294 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 392 transitions. Word has length 10 [2020-09-17 00:20:07,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:20:07,294 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 392 transitions. [2020-09-17 00:20:07,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 00:20:07,295 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 392 transitions. [2020-09-17 00:20:07,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-17 00:20:07,296 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:20:07,296 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:20:07,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-17 00:20:07,297 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:20:07,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:20:07,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1312152701, now seen corresponding path program 1 times [2020-09-17 00:20:07,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:20:07,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332216914] [2020-09-17 00:20:07,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:20:07,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:20:07,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:20:07,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332216914] [2020-09-17 00:20:07,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:20:07,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 00:20:07,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092215206] [2020-09-17 00:20:07,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 00:20:07,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:20:07,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 00:20:07,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 00:20:07,406 INFO L87 Difference]: Start difference. First operand 154 states and 392 transitions. Second operand 4 states. [2020-09-17 00:20:07,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:20:07,434 INFO L93 Difference]: Finished difference Result 174 states and 426 transitions. [2020-09-17 00:20:07,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 00:20:07,435 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-17 00:20:07,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:20:07,436 INFO L225 Difference]: With dead ends: 174 [2020-09-17 00:20:07,437 INFO L226 Difference]: Without dead ends: 150 [2020-09-17 00:20:07,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-17 00:20:07,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-09-17 00:20:07,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-09-17 00:20:07,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-09-17 00:20:07,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 378 transitions. [2020-09-17 00:20:07,448 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 378 transitions. Word has length 11 [2020-09-17 00:20:07,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:20:07,448 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 378 transitions. [2020-09-17 00:20:07,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 00:20:07,449 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 378 transitions. [2020-09-17 00:20:07,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-17 00:20:07,450 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:20:07,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:20:07,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-17 00:20:07,451 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:20:07,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:20:07,451 INFO L82 PathProgramCache]: Analyzing trace with hash 266026162, now seen corresponding path program 1 times [2020-09-17 00:20:07,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:20:07,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031040326] [2020-09-17 00:20:07,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:20:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:20:07,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:20:07,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031040326] [2020-09-17 00:20:07,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:20:07,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 00:20:07,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926053704] [2020-09-17 00:20:07,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 00:20:07,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:20:07,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 00:20:07,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 00:20:07,527 INFO L87 Difference]: Start difference. First operand 150 states and 378 transitions. Second operand 4 states. [2020-09-17 00:20:07,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:20:07,560 INFO L93 Difference]: Finished difference Result 164 states and 376 transitions. [2020-09-17 00:20:07,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 00:20:07,561 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-17 00:20:07,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:20:07,562 INFO L225 Difference]: With dead ends: 164 [2020-09-17 00:20:07,563 INFO L226 Difference]: Without dead ends: 128 [2020-09-17 00:20:07,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-17 00:20:07,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-09-17 00:20:07,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-09-17 00:20:07,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-09-17 00:20:07,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 293 transitions. [2020-09-17 00:20:07,570 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 293 transitions. Word has length 12 [2020-09-17 00:20:07,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:20:07,571 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 293 transitions. [2020-09-17 00:20:07,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 00:20:07,571 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 293 transitions. [2020-09-17 00:20:07,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-17 00:20:07,572 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:20:07,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:20:07,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-17 00:20:07,573 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:20:07,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:20:07,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1292455845, now seen corresponding path program 1 times [2020-09-17 00:20:07,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:20:07,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896645287] [2020-09-17 00:20:07,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:20:07,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:20:07,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:20:07,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896645287] [2020-09-17 00:20:07,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:20:07,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-17 00:20:07,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198316400] [2020-09-17 00:20:07,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 00:20:07,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:20:07,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 00:20:07,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 00:20:07,678 INFO L87 Difference]: Start difference. First operand 128 states and 293 transitions. Second operand 5 states. [2020-09-17 00:20:07,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:20:07,727 INFO L93 Difference]: Finished difference Result 116 states and 240 transitions. [2020-09-17 00:20:07,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 00:20:07,728 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-17 00:20:07,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:20:07,729 INFO L225 Difference]: With dead ends: 116 [2020-09-17 00:20:07,729 INFO L226 Difference]: Without dead ends: 92 [2020-09-17 00:20:07,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-17 00:20:07,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-17 00:20:07,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-09-17 00:20:07,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-17 00:20:07,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 186 transitions. [2020-09-17 00:20:07,734 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 186 transitions. Word has length 13 [2020-09-17 00:20:07,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:20:07,735 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 186 transitions. [2020-09-17 00:20:07,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 00:20:07,735 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 186 transitions. [2020-09-17 00:20:07,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-17 00:20:07,736 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:20:07,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:20:07,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-17 00:20:07,737 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:20:07,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:20:07,737 INFO L82 PathProgramCache]: Analyzing trace with hash -228576461, now seen corresponding path program 1 times [2020-09-17 00:20:07,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:20:07,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244325889] [2020-09-17 00:20:07,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:20:07,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:20:07,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:20:07,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244325889] [2020-09-17 00:20:07,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:20:07,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 00:20:07,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556383579] [2020-09-17 00:20:07,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 00:20:07,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:20:07,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 00:20:07,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 00:20:07,798 INFO L87 Difference]: Start difference. First operand 92 states and 186 transitions. Second operand 4 states. [2020-09-17 00:20:07,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:20:07,818 INFO L93 Difference]: Finished difference Result 120 states and 228 transitions. [2020-09-17 00:20:07,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 00:20:07,819 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-17 00:20:07,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:20:07,820 INFO L225 Difference]: With dead ends: 120 [2020-09-17 00:20:07,820 INFO L226 Difference]: Without dead ends: 94 [2020-09-17 00:20:07,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-17 00:20:07,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-17 00:20:07,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2020-09-17 00:20:07,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-09-17 00:20:07,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 175 transitions. [2020-09-17 00:20:07,824 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 175 transitions. Word has length 14 [2020-09-17 00:20:07,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:20:07,825 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 175 transitions. [2020-09-17 00:20:07,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 00:20:07,825 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 175 transitions. [2020-09-17 00:20:07,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 00:20:07,826 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:20:07,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:20:07,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-17 00:20:07,827 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:20:07,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:20:07,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1357686433, now seen corresponding path program 1 times [2020-09-17 00:20:07,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:20:07,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163515012] [2020-09-17 00:20:07,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:20:07,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:20:07,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:20:07,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163515012] [2020-09-17 00:20:07,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:20:07,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-17 00:20:07,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333876711] [2020-09-17 00:20:07,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 00:20:07,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:20:07,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 00:20:07,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-17 00:20:07,897 INFO L87 Difference]: Start difference. First operand 90 states and 175 transitions. Second operand 5 states. [2020-09-17 00:20:07,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:20:07,929 INFO L93 Difference]: Finished difference Result 113 states and 209 transitions. [2020-09-17 00:20:07,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 00:20:07,930 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-17 00:20:07,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:20:07,931 INFO L225 Difference]: With dead ends: 113 [2020-09-17 00:20:07,931 INFO L226 Difference]: Without dead ends: 70 [2020-09-17 00:20:07,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-17 00:20:07,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-17 00:20:07,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-09-17 00:20:07,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-17 00:20:07,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 115 transitions. [2020-09-17 00:20:07,934 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 115 transitions. Word has length 15 [2020-09-17 00:20:07,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:20:07,935 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 115 transitions. [2020-09-17 00:20:07,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 00:20:07,935 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 115 transitions. [2020-09-17 00:20:07,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 00:20:07,936 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:20:07,936 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:20:07,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-17 00:20:07,937 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:20:07,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:20:07,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1504039886, now seen corresponding path program 1 times [2020-09-17 00:20:07,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:20:07,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978409227] [2020-09-17 00:20:07,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:20:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:20:08,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:20:08,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978409227] [2020-09-17 00:20:08,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:20:08,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 00:20:08,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938975741] [2020-09-17 00:20:08,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-17 00:20:08,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:20:08,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-17 00:20:08,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-17 00:20:08,011 INFO L87 Difference]: Start difference. First operand 68 states and 115 transitions. Second operand 6 states. [2020-09-17 00:20:08,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:20:08,041 INFO L93 Difference]: Finished difference Result 58 states and 100 transitions. [2020-09-17 00:20:08,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 00:20:08,042 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-09-17 00:20:08,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:20:08,042 INFO L225 Difference]: With dead ends: 58 [2020-09-17 00:20:08,042 INFO L226 Difference]: Without dead ends: 0 [2020-09-17 00:20:08,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-17 00:20:08,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-17 00:20:08,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-17 00:20:08,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-17 00:20:08,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-17 00:20:08,044 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-09-17 00:20:08,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:20:08,044 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-17 00:20:08,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-17 00:20:08,044 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-17 00:20:08,044 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-17 00:20:08,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-17 00:20:08,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.09 12:20:08 BasicIcfg [2020-09-17 00:20:08,050 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-17 00:20:08,053 INFO L168 Benchmark]: Toolchain (without parser) took 4918.30 ms. Allocated memory was 140.5 MB in the beginning and 246.4 MB in the end (delta: 105.9 MB). Free memory was 102.6 MB in the beginning and 158.1 MB in the end (delta: -55.5 MB). Peak memory consumption was 50.4 MB. Max. memory is 7.1 GB. [2020-09-17 00:20:08,054 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-17 00:20:08,055 INFO L168 Benchmark]: CACSL2BoogieTranslator took 802.75 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.0 MB in the beginning and 161.3 MB in the end (delta: -59.3 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2020-09-17 00:20:08,056 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.88 ms. Allocated memory is still 203.9 MB. Free memory was 161.3 MB in the beginning and 159.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-17 00:20:08,057 INFO L168 Benchmark]: Boogie Preprocessor took 39.39 ms. Allocated memory is still 203.9 MB. Free memory was 159.3 MB in the beginning and 157.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-17 00:20:08,058 INFO L168 Benchmark]: RCFGBuilder took 481.96 ms. Allocated memory is still 203.9 MB. Free memory was 157.4 MB in the beginning and 135.7 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-09-17 00:20:08,059 INFO L168 Benchmark]: TraceAbstraction took 3521.51 ms. Allocated memory was 203.9 MB in the beginning and 246.4 MB in the end (delta: 42.5 MB). Free memory was 135.0 MB in the beginning and 158.1 MB in the end (delta: -23.1 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. [2020-09-17 00:20:08,063 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 802.75 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.0 MB in the beginning and 161.3 MB in the end (delta: -59.3 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 62.88 ms. Allocated memory is still 203.9 MB. Free memory was 161.3 MB in the beginning and 159.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 39.39 ms. Allocated memory is still 203.9 MB. Free memory was 159.3 MB in the beginning and 157.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 481.96 ms. Allocated memory is still 203.9 MB. Free memory was 157.4 MB in the beginning and 135.7 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3521.51 ms. Allocated memory was 203.9 MB in the beginning and 246.4 MB in the end (delta: 42.5 MB). Free memory was 135.0 MB in the beginning and 158.1 MB in the end (delta: -23.1 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 76 ProgramPointsBefore, 31 ProgramPointsAfterwards, 68 TransitionsBefore, 22 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 609 VarBasedMoverChecksPositive, 27 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2244 CheckedPairsTotal, 56 TotalNumberOfCompositions - 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 4 procedures, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.3s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 188 SDtfs, 171 SDslu, 276 SDs, 0 SdLazy, 115 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred 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: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 3192 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...