/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/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe037_rmo.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-12 00:13:59,856 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-12 00:13:59,860 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-12 00:13:59,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-12 00:13:59,903 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-12 00:13:59,911 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-12 00:13:59,915 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-12 00:13:59,920 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-12 00:13:59,923 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-12 00:13:59,927 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-12 00:13:59,928 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-12 00:13:59,929 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-12 00:13:59,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-12 00:13:59,933 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-12 00:13:59,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-12 00:13:59,938 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-12 00:13:59,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-12 00:13:59,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-12 00:13:59,943 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-12 00:13:59,951 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-12 00:13:59,953 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-12 00:13:59,954 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-12 00:13:59,956 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-12 00:13:59,956 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-12 00:13:59,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-12 00:13:59,975 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-12 00:13:59,976 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-12 00:13:59,977 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-12 00:13:59,978 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-12 00:13:59,979 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-12 00:13:59,980 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-12 00:13:59,980 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-12 00:13:59,981 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-12 00:13:59,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-12 00:13:59,982 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-12 00:13:59,983 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-12 00:13:59,984 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-12 00:14:00,027 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-12 00:14:00,027 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-12 00:14:00,029 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-12 00:14:00,029 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-12 00:14:00,030 INFO L138 SettingsManager]: * Use SBE=true [2020-09-12 00:14:00,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-12 00:14:00,030 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-12 00:14:00,030 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-12 00:14:00,031 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-12 00:14:00,031 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-12 00:14:00,032 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-12 00:14:00,032 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-12 00:14:00,032 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-12 00:14:00,033 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-12 00:14:00,033 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-12 00:14:00,033 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-12 00:14:00,033 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-12 00:14:00,034 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-12 00:14:00,034 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-12 00:14:00,034 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-12 00:14:00,034 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-12 00:14:00,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-12 00:14:00,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-12 00:14:00,035 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-12 00:14:00,035 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-12 00:14:00,035 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-12 00:14:00,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-12 00:14:00,036 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-12 00:14:00,036 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-12 00:14:00,036 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-12 00:14:00,036 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-12 00:14:00,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-12 00:14:00,477 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-12 00:14:00,482 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-12 00:14:00,485 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-12 00:14:00,487 INFO L275 PluginConnector]: CDTParser initialized [2020-09-12 00:14:00,489 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe037_rmo.oepc.i [2020-09-12 00:14:00,572 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14f71eb7f/57784cec65b54f3aa4bab28359d8802e/FLAG0f294586c [2020-09-12 00:14:01,241 INFO L306 CDTParser]: Found 1 translation units. [2020-09-12 00:14:01,242 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe037_rmo.oepc.i [2020-09-12 00:14:01,277 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14f71eb7f/57784cec65b54f3aa4bab28359d8802e/FLAG0f294586c [2020-09-12 00:14:01,463 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14f71eb7f/57784cec65b54f3aa4bab28359d8802e [2020-09-12 00:14:01,476 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-12 00:14:01,482 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-12 00:14:01,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-12 00:14:01,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-12 00:14:01,488 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-12 00:14:01,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 12:14:01" (1/1) ... [2020-09-12 00:14:01,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@346213aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:14:01, skipping insertion in model container [2020-09-12 00:14:01,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 12:14:01" (1/1) ... [2020-09-12 00:14:01,503 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-12 00:14:01,560 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-12 00:14:02,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-12 00:14:02,228 INFO L203 MainTranslator]: Completed pre-run [2020-09-12 00:14:02,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-12 00:14:02,386 INFO L208 MainTranslator]: Completed translation [2020-09-12 00:14:02,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:14:02 WrapperNode [2020-09-12 00:14:02,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-12 00:14:02,387 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-12 00:14:02,387 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-12 00:14:02,387 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-12 00:14:02,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:14:02" (1/1) ... [2020-09-12 00:14:02,422 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:14:02" (1/1) ... [2020-09-12 00:14:02,448 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-12 00:14:02,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-12 00:14:02,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-12 00:14:02,449 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-12 00:14:02,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:14:02" (1/1) ... [2020-09-12 00:14:02,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:14:02" (1/1) ... [2020-09-12 00:14:02,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:14:02" (1/1) ... [2020-09-12 00:14:02,462 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:14:02" (1/1) ... [2020-09-12 00:14:02,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:14:02" (1/1) ... [2020-09-12 00:14:02,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:14:02" (1/1) ... [2020-09-12 00:14:02,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:14:02" (1/1) ... [2020-09-12 00:14:02,478 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-12 00:14:02,479 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-12 00:14:02,479 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-12 00:14:02,479 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-12 00:14:02,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:14:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-12 00:14:02,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-12 00:14:02,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-12 00:14:02,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-12 00:14:02,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-12 00:14:02,563 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-12 00:14:02,563 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-12 00:14:02,564 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-12 00:14:02,564 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-12 00:14:02,565 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-12 00:14:02,565 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-12 00:14:02,570 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-12 00:14:02,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-12 00:14:02,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-12 00:14:02,573 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-12 00:14:02,921 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-12 00:14:02,921 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-12 00:14:02,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 12:14:02 BoogieIcfgContainer [2020-09-12 00:14:02,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-12 00:14:02,928 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-12 00:14:02,928 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-12 00:14:02,932 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-12 00:14:02,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 12:14:01" (1/3) ... [2020-09-12 00:14:02,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@455bb693 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 12:14:02, skipping insertion in model container [2020-09-12 00:14:02,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:14:02" (2/3) ... [2020-09-12 00:14:02,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@455bb693 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 12:14:02, skipping insertion in model container [2020-09-12 00:14:02,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 12:14:02" (3/3) ... [2020-09-12 00:14:02,936 INFO L109 eAbstractionObserver]: Analyzing ICFG safe037_rmo.oepc.i [2020-09-12 00:14:02,958 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-12 00:14:02,959 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-12 00:14:02,967 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-12 00:14:02,968 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-12 00:14:03,000 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:03,001 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:03,001 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:03,001 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:03,002 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:03,002 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:03,002 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:03,003 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:03,003 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:03,003 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:03,004 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:03,004 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:03,004 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:03,005 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:03,005 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:03,005 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:03,005 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:03,006 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:03,010 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:03,011 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:03,011 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:03,011 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:03,019 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:03,019 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:03,020 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:03,020 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:03,024 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:03,024 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:03,024 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:03,024 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:14:03,054 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-12 00:14:03,080 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-12 00:14:03,080 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-12 00:14:03,080 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-12 00:14:03,081 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-12 00:14:03,081 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-12 00:14:03,081 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-12 00:14:03,081 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-12 00:14:03,081 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-12 00:14:03,101 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 71 transitions, 157 flow [2020-09-12 00:14:03,104 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-09-12 00:14:03,155 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-09-12 00:14:03,156 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-12 00:14:03,162 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-12 00:14:03,165 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-09-12 00:14:03,188 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-09-12 00:14:03,188 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-12 00:14:03,189 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-12 00:14:03,191 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-12 00:14:03,193 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-12 00:14:04,351 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-09-12 00:14:04,436 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2315 [2020-09-12 00:14:04,436 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-09-12 00:14:04,441 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-09-12 00:14:04,478 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-09-12 00:14:04,481 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-09-12 00:14:04,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-12 00:14:04,491 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:14:04,492 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:14:04,493 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:14:04,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:14:04,501 INFO L82 PathProgramCache]: Analyzing trace with hash 385809968, now seen corresponding path program 1 times [2020-09-12 00:14:04,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:14:04,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302811289] [2020-09-12 00:14:04,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:14:04,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:14:04,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:14:04,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302811289] [2020-09-12 00:14:04,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:14:04,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-12 00:14:04,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [632491850] [2020-09-12 00:14:04,764 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:14:04,768 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:14:04,786 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-12 00:14:04,786 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:14:04,789 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:14:04,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-12 00:14:04,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:14:04,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-12 00:14:04,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-12 00:14:04,812 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-09-12 00:14:04,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:14:04,841 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-09-12 00:14:04,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-12 00:14:04,843 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-09-12 00:14:04,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:14:04,868 INFO L225 Difference]: With dead ends: 362 [2020-09-12 00:14:04,868 INFO L226 Difference]: Without dead ends: 298 [2020-09-12 00:14:04,870 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 [2020-09-12 00:14:04,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-09-12 00:14:04,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-09-12 00:14:04,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-09-12 00:14:04,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-09-12 00:14:04,962 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-09-12 00:14:04,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:14:04,963 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-09-12 00:14:04,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-12 00:14:04,963 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-09-12 00:14:04,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-12 00:14:04,965 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:14:04,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:14:04,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-12 00:14:04,966 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:14:04,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:14:04,967 INFO L82 PathProgramCache]: Analyzing trace with hash -924796273, now seen corresponding path program 1 times [2020-09-12 00:14:04,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:14:04,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193731964] [2020-09-12 00:14:04,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:14:05,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:14:05,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:14:05,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193731964] [2020-09-12 00:14:05,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:14:05,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-12 00:14:05,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [415801739] [2020-09-12 00:14:05,076 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:14:05,077 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:14:05,079 INFO L274 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-09-12 00:14:05,079 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:14:05,079 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:14:05,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-12 00:14:05,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:14:05,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-12 00:14:05,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:14:05,082 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 3 states. [2020-09-12 00:14:05,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:14:05,107 INFO L93 Difference]: Finished difference Result 217 states and 540 transitions. [2020-09-12 00:14:05,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-12 00:14:05,107 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-12 00:14:05,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:14:05,110 INFO L225 Difference]: With dead ends: 217 [2020-09-12 00:14:05,110 INFO L226 Difference]: Without dead ends: 217 [2020-09-12 00:14:05,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:14:05,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-09-12 00:14:05,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-09-12 00:14:05,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-09-12 00:14:05,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 540 transitions. [2020-09-12 00:14:05,134 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 540 transitions. Word has length 9 [2020-09-12 00:14:05,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:14:05,134 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 540 transitions. [2020-09-12 00:14:05,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-12 00:14:05,135 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 540 transitions. [2020-09-12 00:14:05,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-12 00:14:05,137 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:14:05,137 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:14:05,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-12 00:14:05,137 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:14:05,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:14:05,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1123394358, now seen corresponding path program 1 times [2020-09-12 00:14:05,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:14:05,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236530340] [2020-09-12 00:14:05,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:14:05,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:14:05,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:14:05,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236530340] [2020-09-12 00:14:05,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:14:05,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-12 00:14:05,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1980481978] [2020-09-12 00:14:05,268 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:14:05,269 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:14:05,274 INFO L274 McrAutomatonBuilder]: Finished intersection with 25 states and 36 transitions. [2020-09-12 00:14:05,274 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:14:05,456 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2424#(<= ~__unbuffered_cnt~0 0)] [2020-09-12 00:14:05,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-12 00:14:05,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:14:05,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-12 00:14:05,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:14:05,457 INFO L87 Difference]: Start difference. First operand 217 states and 540 transitions. Second operand 5 states. [2020-09-12 00:14:05,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:14:05,493 INFO L93 Difference]: Finished difference Result 136 states and 297 transitions. [2020-09-12 00:14:05,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-12 00:14:05,494 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-12 00:14:05,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:14:05,496 INFO L225 Difference]: With dead ends: 136 [2020-09-12 00:14:05,496 INFO L226 Difference]: Without dead ends: 136 [2020-09-12 00:14:05,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:14:05,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-09-12 00:14:05,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-09-12 00:14:05,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-09-12 00:14:05,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-09-12 00:14:05,506 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-09-12 00:14:05,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:14:05,507 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-09-12 00:14:05,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-12 00:14:05,507 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-09-12 00:14:05,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-12 00:14:05,509 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:14:05,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:14:05,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-12 00:14:05,509 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:14:05,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:14:05,510 INFO L82 PathProgramCache]: Analyzing trace with hash -104701845, now seen corresponding path program 1 times [2020-09-12 00:14:05,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:14:05,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770479899] [2020-09-12 00:14:05,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:14:05,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:14:05,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:14:05,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770479899] [2020-09-12 00:14:05,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:14:05,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-12 00:14:05,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [781876377] [2020-09-12 00:14:05,603 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:14:05,605 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:14:05,608 INFO L274 McrAutomatonBuilder]: Finished intersection with 33 states and 49 transitions. [2020-09-12 00:14:05,609 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:14:05,750 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2838#(<= ~__unbuffered_cnt~0 0)] [2020-09-12 00:14:05,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-12 00:14:05,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:14:05,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-12 00:14:05,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-12 00:14:05,751 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 6 states. [2020-09-12 00:14:05,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:14:05,783 INFO L93 Difference]: Finished difference Result 109 states and 243 transitions. [2020-09-12 00:14:05,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-12 00:14:05,784 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-09-12 00:14:05,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:14:05,785 INFO L225 Difference]: With dead ends: 109 [2020-09-12 00:14:05,785 INFO L226 Difference]: Without dead ends: 109 [2020-09-12 00:14:05,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-12 00:14:05,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-12 00:14:05,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-09-12 00:14:05,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-09-12 00:14:05,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-09-12 00:14:05,791 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-09-12 00:14:05,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:14:05,791 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-09-12 00:14:05,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-12 00:14:05,792 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-09-12 00:14:05,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-12 00:14:05,793 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:14:05,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:14:05,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-12 00:14:05,794 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:14:05,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:14:05,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1786856379, now seen corresponding path program 1 times [2020-09-12 00:14:05,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:14:05,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202202294] [2020-09-12 00:14:05,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:14:05,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:14:05,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:14:05,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202202294] [2020-09-12 00:14:05,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:14:05,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-12 00:14:05,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [888718401] [2020-09-12 00:14:05,946 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:14:05,949 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:14:05,957 INFO L274 McrAutomatonBuilder]: Finished intersection with 50 states and 85 transitions. [2020-09-12 00:14:05,957 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:14:06,164 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:14:06,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-12 00:14:06,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:14:06,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-12 00:14:06,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:14:06,166 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 5 states. [2020-09-12 00:14:06,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:14:06,203 INFO L93 Difference]: Finished difference Result 135 states and 291 transitions. [2020-09-12 00:14:06,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-12 00:14:06,204 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-12 00:14:06,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:14:06,204 INFO L225 Difference]: With dead ends: 135 [2020-09-12 00:14:06,205 INFO L226 Difference]: Without dead ends: 55 [2020-09-12 00:14:06,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-12 00:14:06,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-12 00:14:06,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-12 00:14:06,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-12 00:14:06,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 99 transitions. [2020-09-12 00:14:06,209 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 99 transitions. Word has length 18 [2020-09-12 00:14:06,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:14:06,209 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 99 transitions. [2020-09-12 00:14:06,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-12 00:14:06,209 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 99 transitions. [2020-09-12 00:14:06,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-12 00:14:06,210 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:14:06,210 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:14:06,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-12 00:14:06,211 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:14:06,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:14:06,211 INFO L82 PathProgramCache]: Analyzing trace with hash -442498565, now seen corresponding path program 2 times [2020-09-12 00:14:06,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:14:06,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199867412] [2020-09-12 00:14:06,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:14:06,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:14:06,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:14:06,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199867412] [2020-09-12 00:14:06,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:14:06,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-12 00:14:06,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [66715296] [2020-09-12 00:14:06,323 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:14:06,325 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:14:06,329 INFO L274 McrAutomatonBuilder]: Finished intersection with 23 states and 26 transitions. [2020-09-12 00:14:06,329 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:14:06,344 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:14:06,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-12 00:14:06,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:14:06,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-12 00:14:06,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:14:06,346 INFO L87 Difference]: Start difference. First operand 55 states and 99 transitions. Second operand 5 states. [2020-09-12 00:14:06,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:14:06,385 INFO L93 Difference]: Finished difference Result 75 states and 132 transitions. [2020-09-12 00:14:06,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-12 00:14:06,385 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-12 00:14:06,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:14:06,386 INFO L225 Difference]: With dead ends: 75 [2020-09-12 00:14:06,386 INFO L226 Difference]: Without dead ends: 37 [2020-09-12 00:14:06,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-12 00:14:06,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-09-12 00:14:06,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-09-12 00:14:06,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-12 00:14:06,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2020-09-12 00:14:06,389 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 18 [2020-09-12 00:14:06,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:14:06,390 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2020-09-12 00:14:06,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-12 00:14:06,390 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2020-09-12 00:14:06,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-12 00:14:06,391 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:14:06,391 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:14:06,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-12 00:14:06,392 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:14:06,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:14:06,392 INFO L82 PathProgramCache]: Analyzing trace with hash 21041593, now seen corresponding path program 3 times [2020-09-12 00:14:06,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:14:06,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476794440] [2020-09-12 00:14:06,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:14:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:14:06,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:14:06,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476794440] [2020-09-12 00:14:06,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:14:06,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-12 00:14:06,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [930716896] [2020-09-12 00:14:06,496 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:14:06,498 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:14:06,505 INFO L274 McrAutomatonBuilder]: Finished intersection with 29 states and 38 transitions. [2020-09-12 00:14:06,505 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:14:06,548 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:14:06,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-12 00:14:06,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:14:06,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-12 00:14:06,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:14:06,550 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand 5 states. [2020-09-12 00:14:06,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:14:06,579 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2020-09-12 00:14:06,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-12 00:14:06,580 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-12 00:14:06,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:14:06,580 INFO L225 Difference]: With dead ends: 36 [2020-09-12 00:14:06,580 INFO L226 Difference]: Without dead ends: 0 [2020-09-12 00:14:06,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-12 00:14:06,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-12 00:14:06,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-12 00:14:06,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-12 00:14:06,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-12 00:14:06,582 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-09-12 00:14:06,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:14:06,582 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-12 00:14:06,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-12 00:14:06,584 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-12 00:14:06,584 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-12 00:14:06,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-12 00:14:06,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.09 12:14:06 BasicIcfg [2020-09-12 00:14:06,594 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-12 00:14:06,599 INFO L168 Benchmark]: Toolchain (without parser) took 5118.75 ms. Allocated memory was 140.0 MB in the beginning and 246.9 MB in the end (delta: 107.0 MB). Free memory was 101.3 MB in the beginning and 149.3 MB in the end (delta: -48.0 MB). Peak memory consumption was 58.9 MB. Max. memory is 7.1 GB. [2020-09-12 00:14:06,605 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-12 00:14:06,606 INFO L168 Benchmark]: CACSL2BoogieTranslator took 903.17 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 100.9 MB in the beginning and 160.0 MB in the end (delta: -59.1 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-09-12 00:14:06,609 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.86 ms. Allocated memory is still 203.4 MB. Free memory was 160.0 MB in the beginning and 157.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-12 00:14:06,610 INFO L168 Benchmark]: Boogie Preprocessor took 30.29 ms. Allocated memory is still 203.4 MB. Free memory was 157.9 MB in the beginning and 156.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-12 00:14:06,610 INFO L168 Benchmark]: RCFGBuilder took 447.66 ms. Allocated memory is still 203.4 MB. Free memory was 156.0 MB in the beginning and 134.2 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-09-12 00:14:06,611 INFO L168 Benchmark]: TraceAbstraction took 3666.67 ms. Allocated memory was 203.4 MB in the beginning and 246.9 MB in the end (delta: 43.5 MB). Free memory was 133.5 MB in the beginning and 149.3 MB in the end (delta: -15.8 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. [2020-09-12 00:14:06,621 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 903.17 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 100.9 MB in the beginning and 160.0 MB in the end (delta: -59.1 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 60.86 ms. Allocated memory is still 203.4 MB. Free memory was 160.0 MB in the beginning and 157.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.29 ms. Allocated memory is still 203.4 MB. Free memory was 157.9 MB in the beginning and 156.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 447.66 ms. Allocated memory is still 203.4 MB. Free memory was 156.0 MB in the beginning and 134.2 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3666.67 ms. Allocated memory was 203.4 MB in the beginning and 246.9 MB in the end (delta: 43.5 MB). Free memory was 133.5 MB in the beginning and 149.3 MB in the end (delta: -15.8 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.3s, 79 ProgramPointsBefore, 32 ProgramPointsAfterwards, 71 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 640 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2315 CheckedPairsTotal, 57 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, 70 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 138 SDtfs, 82 SDslu, 227 SDs, 0 SdLazy, 64 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 159 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 3491 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...