/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 22:14:13,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 22:14:13,962 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 22:14:13,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 22:14:13,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 22:14:13,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 22:14:13,988 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 22:14:13,992 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 22:14:13,996 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 22:14:13,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 22:14:13,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 22:14:13,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 22:14:13,999 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 22:14:14,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 22:14:14,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 22:14:14,005 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 22:14:14,005 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 22:14:14,006 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 22:14:14,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 22:14:14,009 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 22:14:14,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 22:14:14,011 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 22:14:14,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 22:14:14,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 22:14:14,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-15 22:14:14,018 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 22:14:14,018 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 22:14:14,019 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 22:14:14,020 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 22:14:14,021 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 22:14:14,021 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 22:14:14,021 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 22:14:14,022 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 22:14:14,022 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 22:14:14,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 22:14:14,023 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 22:14:14,024 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-10-15 22:14:14,046 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 22:14:14,046 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 22:14:14,048 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 22:14:14,048 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 22:14:14,048 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 22:14:14,048 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 22:14:14,048 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 22:14:14,049 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 22:14:14,049 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 22:14:14,049 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 22:14:14,049 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 22:14:14,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 22:14:14,050 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 22:14:14,050 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 22:14:14,050 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 22:14:14,050 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 22:14:14,050 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 22:14:14,051 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 22:14:14,051 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 22:14:14,051 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 22:14:14,051 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 22:14:14,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 22:14:14,052 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 22:14:14,052 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 22:14:14,052 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 22:14:14,052 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 22:14:14,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 22:14:14,053 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 22:14:14,053 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 22:14:14,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 22:14:14,387 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 22:14:14,391 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 22:14:14,392 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 22:14:14,393 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 22:14:14,393 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i [2020-10-15 22:14:14,474 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ce77c4f2/3e85c6ba27dc41a4b43d9ac501d8a402/FLAG44e8db93e [2020-10-15 22:14:14,991 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 22:14:14,992 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i [2020-10-15 22:14:15,006 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ce77c4f2/3e85c6ba27dc41a4b43d9ac501d8a402/FLAG44e8db93e [2020-10-15 22:14:15,295 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ce77c4f2/3e85c6ba27dc41a4b43d9ac501d8a402 [2020-10-15 22:14:15,306 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 22:14:15,308 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 22:14:15,309 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 22:14:15,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 22:14:15,313 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 22:14:15,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 10:14:15" (1/1) ... [2020-10-15 22:14:15,319 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cd10c2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:14:15, skipping insertion in model container [2020-10-15 22:14:15,319 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 10:14:15" (1/1) ... [2020-10-15 22:14:15,328 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 22:14:15,389 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 22:14:15,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 22:14:15,846 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 22:14:15,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 22:14:15,970 INFO L208 MainTranslator]: Completed translation [2020-10-15 22:14:15,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:14:15 WrapperNode [2020-10-15 22:14:15,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 22:14:15,971 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 22:14:15,972 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 22:14:15,972 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 22:14:15,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:14:15" (1/1) ... [2020-10-15 22:14:15,998 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:14:15" (1/1) ... [2020-10-15 22:14:16,022 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 22:14:16,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 22:14:16,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 22:14:16,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 22:14:16,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:14:15" (1/1) ... [2020-10-15 22:14:16,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:14:15" (1/1) ... [2020-10-15 22:14:16,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:14:15" (1/1) ... [2020-10-15 22:14:16,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:14:15" (1/1) ... [2020-10-15 22:14:16,043 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:14:15" (1/1) ... [2020-10-15 22:14:16,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:14:15" (1/1) ... [2020-10-15 22:14:16,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:14:15" (1/1) ... [2020-10-15 22:14:16,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 22:14:16,052 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 22:14:16,052 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 22:14:16,052 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 22:14:16,053 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:14:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 22:14:16,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 22:14:16,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-15 22:14:16,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 22:14:16,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 22:14:16,127 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-15 22:14:16,127 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-15 22:14:16,127 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-15 22:14:16,127 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-15 22:14:16,127 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-15 22:14:16,128 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-15 22:14:16,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-15 22:14:16,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 22:14:16,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 22:14:16,130 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 22:14:16,490 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 22:14:16,491 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-15 22:14:16,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 10:14:16 BoogieIcfgContainer [2020-10-15 22:14:16,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 22:14:16,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 22:14:16,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 22:14:16,499 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 22:14:16,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 10:14:15" (1/3) ... [2020-10-15 22:14:16,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70482f7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 10:14:16, skipping insertion in model container [2020-10-15 22:14:16,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:14:15" (2/3) ... [2020-10-15 22:14:16,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70482f7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 10:14:16, skipping insertion in model container [2020-10-15 22:14:16,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 10:14:16" (3/3) ... [2020-10-15 22:14:16,503 INFO L111 eAbstractionObserver]: Analyzing ICFG safe023_tso.oepc.i [2020-10-15 22:14:16,515 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 22:14:16,515 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 22:14:16,523 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 22:14:16,524 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 22:14:16,553 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:14:16,554 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:14:16,554 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:14:16,554 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:14:16,555 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:14:16,555 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:14:16,556 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:14:16,556 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:14:16,556 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:14:16,556 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:14:16,557 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:14:16,557 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:14:16,558 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:14:16,558 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:14:16,558 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:14:16,558 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:14:16,559 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:14:16,559 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:14:16,563 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:14:16,563 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:14:16,563 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:14:16,564 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:14:16,570 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:14:16,570 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:14:16,571 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:14:16,571 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:14:16,573 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:14:16,574 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:14:16,574 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:14:16,574 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:14:16,591 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-15 22:14:16,614 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 22:14:16,615 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 22:14:16,615 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 22:14:16,615 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 22:14:16,615 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 22:14:16,615 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 22:14:16,616 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 22:14:16,616 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 22:14:16,629 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 22:14:16,631 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-15 22:14:16,634 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-15 22:14:16,636 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-15 22:14:16,681 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-15 22:14:16,682 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-15 22:14:16,687 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-15 22:14:16,690 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-15 22:14:18,275 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-10-15 22:14:18,359 INFO L132 LiptonReduction]: Checked pairs total: 2936 [2020-10-15 22:14:18,359 INFO L134 LiptonReduction]: Total number of compositions: 59 [2020-10-15 22:14:18,366 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-15 22:14:18,395 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-15 22:14:18,398 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-15 22:14:18,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-15 22:14:18,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:14:18,407 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:14:18,408 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:14:18,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:14:18,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-10-15 22:14:18,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:14:18,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119663811] [2020-10-15 22:14:18,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:14:18,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:14:18,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:14:18,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119663811] [2020-10-15 22:14:18,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:14:18,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 22:14:18,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884308719] [2020-10-15 22:14:18,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 22:14:18,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:14:18,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 22:14:18,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:14:18,697 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-15 22:14:18,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:14:18,743 INFO L93 Difference]: Finished difference Result 266 states and 752 transitions. [2020-10-15 22:14:18,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 22:14:18,745 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-15 22:14:18,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:14:18,778 INFO L225 Difference]: With dead ends: 266 [2020-10-15 22:14:18,778 INFO L226 Difference]: Without dead ends: 202 [2020-10-15 22:14:18,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:14:18,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-15 22:14:18,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-15 22:14:18,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-15 22:14:18,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-10-15 22:14:18,858 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 8 [2020-10-15 22:14:18,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:14:18,860 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-10-15 22:14:18,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 22:14:18,860 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-10-15 22:14:18,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 22:14:18,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:14:18,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:14:18,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 22:14:18,864 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:14:18,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:14:18,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1925985154, now seen corresponding path program 1 times [2020-10-15 22:14:18,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:14:18,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953590187] [2020-10-15 22:14:18,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:14:18,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:14:18,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:14:18,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953590187] [2020-10-15 22:14:18,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:14:18,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:14:18,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256885731] [2020-10-15 22:14:18,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 22:14:18,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:14:18,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 22:14:18,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:14:18,952 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-10-15 22:14:18,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:14:18,970 INFO L93 Difference]: Finished difference Result 284 states and 746 transitions. [2020-10-15 22:14:18,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 22:14:18,971 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-15 22:14:18,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:14:18,973 INFO L225 Difference]: With dead ends: 284 [2020-10-15 22:14:18,973 INFO L226 Difference]: Without dead ends: 164 [2020-10-15 22:14:18,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:14:18,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-15 22:14:18,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2020-10-15 22:14:18,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-15 22:14:18,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 422 transitions. [2020-10-15 22:14:18,989 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 422 transitions. Word has length 10 [2020-10-15 22:14:18,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:14:18,990 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 422 transitions. [2020-10-15 22:14:18,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 22:14:18,990 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 422 transitions. [2020-10-15 22:14:18,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 22:14:18,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:14:18,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:14:18,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 22:14:18,992 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:14:18,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:14:18,992 INFO L82 PathProgramCache]: Analyzing trace with hash -424003265, now seen corresponding path program 1 times [2020-10-15 22:14:18,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:14:18,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686486616] [2020-10-15 22:14:18,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:14:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:14:19,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:14:19,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686486616] [2020-10-15 22:14:19,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:14:19,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 22:14:19,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095644508] [2020-10-15 22:14:19,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 22:14:19,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:14:19,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 22:14:19,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:14:19,052 INFO L87 Difference]: Start difference. First operand 164 states and 422 transitions. Second operand 3 states. [2020-10-15 22:14:19,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:14:19,057 INFO L93 Difference]: Finished difference Result 158 states and 403 transitions. [2020-10-15 22:14:19,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 22:14:19,058 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-15 22:14:19,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:14:19,060 INFO L225 Difference]: With dead ends: 158 [2020-10-15 22:14:19,060 INFO L226 Difference]: Without dead ends: 158 [2020-10-15 22:14:19,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:14:19,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-15 22:14:19,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-10-15 22:14:19,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-15 22:14:19,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 403 transitions. [2020-10-15 22:14:19,073 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 403 transitions. Word has length 11 [2020-10-15 22:14:19,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:14:19,073 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 403 transitions. [2020-10-15 22:14:19,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 22:14:19,074 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 403 transitions. [2020-10-15 22:14:19,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 22:14:19,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:14:19,075 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:14:19,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 22:14:19,076 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:14:19,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:14:19,076 INFO L82 PathProgramCache]: Analyzing trace with hash -259200532, now seen corresponding path program 1 times [2020-10-15 22:14:19,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:14:19,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036871139] [2020-10-15 22:14:19,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:14:19,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:14:19,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:14:19,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036871139] [2020-10-15 22:14:19,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:14:19,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:14:19,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086642065] [2020-10-15 22:14:19,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:14:19,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:14:19,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:14:19,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:14:19,122 INFO L87 Difference]: Start difference. First operand 158 states and 403 transitions. Second operand 4 states. [2020-10-15 22:14:19,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:14:19,143 INFO L93 Difference]: Finished difference Result 188 states and 468 transitions. [2020-10-15 22:14:19,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 22:14:19,143 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-15 22:14:19,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:14:19,145 INFO L225 Difference]: With dead ends: 188 [2020-10-15 22:14:19,145 INFO L226 Difference]: Without dead ends: 110 [2020-10-15 22:14:19,145 INFO L677 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 [2020-10-15 22:14:19,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-15 22:14:19,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-10-15 22:14:19,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-15 22:14:19,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 255 transitions. [2020-10-15 22:14:19,152 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 255 transitions. Word has length 12 [2020-10-15 22:14:19,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:14:19,152 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 255 transitions. [2020-10-15 22:14:19,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:14:19,152 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 255 transitions. [2020-10-15 22:14:19,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 22:14:19,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:14:19,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:14:19,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 22:14:19,154 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:14:19,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:14:19,155 INFO L82 PathProgramCache]: Analyzing trace with hash 554696714, now seen corresponding path program 1 times [2020-10-15 22:14:19,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:14:19,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222453182] [2020-10-15 22:14:19,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:14:19,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:14:19,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:14:19,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222453182] [2020-10-15 22:14:19,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:14:19,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:14:19,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337645297] [2020-10-15 22:14:19,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:14:19,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:14:19,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:14:19,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:14:19,204 INFO L87 Difference]: Start difference. First operand 110 states and 255 transitions. Second operand 4 states. [2020-10-15 22:14:19,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:14:19,234 INFO L93 Difference]: Finished difference Result 128 states and 277 transitions. [2020-10-15 22:14:19,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:14:19,235 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-15 22:14:19,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:14:19,237 INFO L225 Difference]: With dead ends: 128 [2020-10-15 22:14:19,237 INFO L226 Difference]: Without dead ends: 97 [2020-10-15 22:14:19,237 INFO L677 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 [2020-10-15 22:14:19,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-15 22:14:19,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-10-15 22:14:19,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-15 22:14:19,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 209 transitions. [2020-10-15 22:14:19,251 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 209 transitions. Word has length 13 [2020-10-15 22:14:19,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:14:19,252 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 209 transitions. [2020-10-15 22:14:19,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:14:19,252 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 209 transitions. [2020-10-15 22:14:19,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 22:14:19,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:14:19,257 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:14:19,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 22:14:19,257 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:14:19,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:14:19,258 INFO L82 PathProgramCache]: Analyzing trace with hash 2052968077, now seen corresponding path program 1 times [2020-10-15 22:14:19,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:14:19,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787132566] [2020-10-15 22:14:19,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:14:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:14:19,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:14:19,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787132566] [2020-10-15 22:14:19,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:14:19,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:14:19,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948307776] [2020-10-15 22:14:19,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 22:14:19,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:14:19,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 22:14:19,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:14:19,342 INFO L87 Difference]: Start difference. First operand 97 states and 209 transitions. Second operand 5 states. [2020-10-15 22:14:19,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:14:19,379 INFO L93 Difference]: Finished difference Result 99 states and 200 transitions. [2020-10-15 22:14:19,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 22:14:19,380 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-15 22:14:19,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:14:19,381 INFO L225 Difference]: With dead ends: 99 [2020-10-15 22:14:19,381 INFO L226 Difference]: Without dead ends: 79 [2020-10-15 22:14:19,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 22:14:19,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-15 22:14:19,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-10-15 22:14:19,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-15 22:14:19,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 157 transitions. [2020-10-15 22:14:19,386 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 157 transitions. Word has length 14 [2020-10-15 22:14:19,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:14:19,387 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 157 transitions. [2020-10-15 22:14:19,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 22:14:19,387 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 157 transitions. [2020-10-15 22:14:19,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 22:14:19,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:14:19,388 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:14:19,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 22:14:19,389 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:14:19,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:14:19,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1697163721, now seen corresponding path program 1 times [2020-10-15 22:14:19,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:14:19,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311028387] [2020-10-15 22:14:19,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:14:19,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:14:19,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:14:19,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311028387] [2020-10-15 22:14:19,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:14:19,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 22:14:19,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212904485] [2020-10-15 22:14:19,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 22:14:19,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:14:19,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 22:14:19,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 22:14:19,437 INFO L87 Difference]: Start difference. First operand 79 states and 157 transitions. Second operand 6 states. [2020-10-15 22:14:19,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:14:19,487 INFO L93 Difference]: Finished difference Result 76 states and 149 transitions. [2020-10-15 22:14:19,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 22:14:19,487 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-15 22:14:19,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:14:19,488 INFO L225 Difference]: With dead ends: 76 [2020-10-15 22:14:19,488 INFO L226 Difference]: Without dead ends: 69 [2020-10-15 22:14:19,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-15 22:14:19,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-15 22:14:19,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-10-15 22:14:19,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-15 22:14:19,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 137 transitions. [2020-10-15 22:14:19,492 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 137 transitions. Word has length 15 [2020-10-15 22:14:19,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:14:19,492 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 137 transitions. [2020-10-15 22:14:19,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 22:14:19,492 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 137 transitions. [2020-10-15 22:14:19,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 22:14:19,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:14:19,493 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:14:19,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 22:14:19,494 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:14:19,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:14:19,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1074918836, now seen corresponding path program 1 times [2020-10-15 22:14:19,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:14:19,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867037146] [2020-10-15 22:14:19,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:14:19,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:14:19,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:14:19,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867037146] [2020-10-15 22:14:19,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:14:19,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:14:19,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793153050] [2020-10-15 22:14:19,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:14:19,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:14:19,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:14:19,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:14:19,527 INFO L87 Difference]: Start difference. First operand 69 states and 137 transitions. Second operand 4 states. [2020-10-15 22:14:19,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:14:19,543 INFO L93 Difference]: Finished difference Result 68 states and 136 transitions. [2020-10-15 22:14:19,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 22:14:19,544 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-15 22:14:19,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:14:19,544 INFO L225 Difference]: With dead ends: 68 [2020-10-15 22:14:19,544 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 22:14:19,545 INFO L677 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 [2020-10-15 22:14:19,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 22:14:19,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 22:14:19,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 22:14:19,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 22:14:19,546 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-15 22:14:19,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:14:19,546 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 22:14:19,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:14:19,546 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 22:14:19,547 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 22:14:19,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 22:14:19,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 10:14:19 BasicIcfg [2020-10-15 22:14:19,551 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 22:14:19,553 INFO L168 Benchmark]: Toolchain (without parser) took 4245.09 ms. Allocated memory was 250.1 MB in the beginning and 366.5 MB in the end (delta: 116.4 MB). Free memory was 205.2 MB in the beginning and 247.7 MB in the end (delta: -42.5 MB). Peak memory consumption was 73.9 MB. Max. memory is 14.2 GB. [2020-10-15 22:14:19,553 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 250.1 MB. Free memory is still 226.5 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 22:14:19,554 INFO L168 Benchmark]: CACSL2BoogieTranslator took 661.85 ms. Allocated memory was 250.1 MB in the beginning and 308.8 MB in the end (delta: 58.7 MB). Free memory was 205.2 MB in the beginning and 261.6 MB in the end (delta: -56.4 MB). Peak memory consumption was 33.2 MB. Max. memory is 14.2 GB. [2020-10-15 22:14:19,555 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.78 ms. Allocated memory is still 308.8 MB. Free memory is still 261.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 22:14:19,556 INFO L168 Benchmark]: Boogie Preprocessor took 29.10 ms. Allocated memory is still 308.8 MB. Free memory was 261.6 MB in the beginning and 259.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 22:14:19,556 INFO L168 Benchmark]: RCFGBuilder took 442.13 ms. Allocated memory is still 308.8 MB. Free memory was 259.1 MB in the beginning and 237.3 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-15 22:14:19,557 INFO L168 Benchmark]: TraceAbstraction took 3055.62 ms. Allocated memory was 308.8 MB in the beginning and 366.5 MB in the end (delta: 57.7 MB). Free memory was 234.8 MB in the beginning and 247.7 MB in the end (delta: -12.9 MB). Peak memory consumption was 44.8 MB. Max. memory is 14.2 GB. [2020-10-15 22:14:19,561 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 250.1 MB. Free memory is still 226.5 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 661.85 ms. Allocated memory was 250.1 MB in the beginning and 308.8 MB in the end (delta: 58.7 MB). Free memory was 205.2 MB in the beginning and 261.6 MB in the end (delta: -56.4 MB). Peak memory consumption was 33.2 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 50.78 ms. Allocated memory is still 308.8 MB. Free memory is still 261.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Preprocessor took 29.10 ms. Allocated memory is still 308.8 MB. Free memory was 261.6 MB in the beginning and 259.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 442.13 ms. Allocated memory is still 308.8 MB. Free memory was 259.1 MB in the beginning and 237.3 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3055.62 ms. Allocated memory was 308.8 MB in the beginning and 366.5 MB in the end (delta: 57.7 MB). Free memory was 234.8 MB in the beginning and 247.7 MB in the end (delta: -12.9 MB). Peak memory consumption was 44.8 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 883 VarBasedMoverChecksPositive, 46 VarBasedMoverChecksNegative, 11 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 70 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.7s, 78 PlacesBefore, 31 PlacesAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 59 TotalNumberOfCompositions, 2936 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.9s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 149 SDtfs, 116 SDslu, 168 SDs, 0 SdLazy, 105 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 3024 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...