/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/safe004_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-18 00:09:22,798 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-18 00:09:22,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-18 00:09:22,835 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-18 00:09:22,835 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-18 00:09:22,837 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-18 00:09:22,838 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-18 00:09:22,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-18 00:09:22,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-18 00:09:22,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-18 00:09:22,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-18 00:09:22,845 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-18 00:09:22,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-18 00:09:22,846 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-18 00:09:22,847 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-18 00:09:22,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-18 00:09:22,850 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-18 00:09:22,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-18 00:09:22,853 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-18 00:09:22,855 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-18 00:09:22,857 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-18 00:09:22,858 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-18 00:09:22,860 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-18 00:09:22,861 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-18 00:09:22,864 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-18 00:09:22,864 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-18 00:09:22,864 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-18 00:09:22,866 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-18 00:09:22,866 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-18 00:09:22,867 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-18 00:09:22,868 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-18 00:09:22,869 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-18 00:09:22,870 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-18 00:09:22,871 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-18 00:09:22,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-18 00:09:22,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-18 00:09:22,873 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-18 00:09:22,873 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-18 00:09:22,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-18 00:09:22,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-18 00:09:22,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-18 00:09:22,877 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-18 00:09:22,903 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-18 00:09:22,903 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-18 00:09:22,904 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-18 00:09:22,905 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-18 00:09:22,905 INFO L138 SettingsManager]: * Use SBE=true [2020-09-18 00:09:22,905 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-18 00:09:22,905 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-18 00:09:22,906 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-18 00:09:22,906 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-18 00:09:22,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-18 00:09:22,906 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-18 00:09:22,906 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-18 00:09:22,907 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-18 00:09:22,907 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-18 00:09:22,907 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-18 00:09:22,907 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-18 00:09:22,907 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-18 00:09:22,908 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-18 00:09:22,908 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-18 00:09:22,908 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-18 00:09:22,908 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-18 00:09:22,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-18 00:09:22,909 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-18 00:09:22,909 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-18 00:09:22,909 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-18 00:09:22,909 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-18 00:09:22,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-18 00:09:22,910 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-18 00:09:22,910 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-18 00:09:22,910 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-18 00:09:22,910 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-18 00:09:23,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-18 00:09:23,383 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-18 00:09:23,388 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-18 00:09:23,390 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-18 00:09:23,391 INFO L275 PluginConnector]: CDTParser initialized [2020-09-18 00:09:23,393 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.oepc.i [2020-09-18 00:09:23,473 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dda3c8d91/23500163f3e24190970dcd31cc0bab9b/FLAG2bb7513b4 [2020-09-18 00:09:24,128 INFO L306 CDTParser]: Found 1 translation units. [2020-09-18 00:09:24,129 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.oepc.i [2020-09-18 00:09:24,145 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dda3c8d91/23500163f3e24190970dcd31cc0bab9b/FLAG2bb7513b4 [2020-09-18 00:09:24,332 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dda3c8d91/23500163f3e24190970dcd31cc0bab9b [2020-09-18 00:09:24,345 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-18 00:09:24,350 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-18 00:09:24,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-18 00:09:24,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-18 00:09:24,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-18 00:09:24,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:09:24" (1/1) ... [2020-09-18 00:09:24,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ece116e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:09:24, skipping insertion in model container [2020-09-18 00:09:24,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:09:24" (1/1) ... [2020-09-18 00:09:24,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-18 00:09:24,432 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-18 00:09:24,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 00:09:24,999 INFO L203 MainTranslator]: Completed pre-run [2020-09-18 00:09:25,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 00:09:25,141 INFO L208 MainTranslator]: Completed translation [2020-09-18 00:09:25,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:09:25 WrapperNode [2020-09-18 00:09:25,141 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-18 00:09:25,142 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-18 00:09:25,143 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-18 00:09:25,143 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-18 00:09:25,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:09:25" (1/1) ... [2020-09-18 00:09:25,175 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:09:25" (1/1) ... [2020-09-18 00:09:25,201 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-18 00:09:25,201 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-18 00:09:25,202 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-18 00:09:25,202 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-18 00:09:25,211 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:09:25" (1/1) ... [2020-09-18 00:09:25,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:09:25" (1/1) ... [2020-09-18 00:09:25,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:09:25" (1/1) ... [2020-09-18 00:09:25,216 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:09:25" (1/1) ... [2020-09-18 00:09:25,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:09:25" (1/1) ... [2020-09-18 00:09:25,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:09:25" (1/1) ... [2020-09-18 00:09:25,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:09:25" (1/1) ... [2020-09-18 00:09:25,234 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-18 00:09:25,235 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-18 00:09:25,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-18 00:09:25,235 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-18 00:09:25,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:09:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-18 00:09:25,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-18 00:09:25,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-18 00:09:25,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-18 00:09:25,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-18 00:09:25,313 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-18 00:09:25,313 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-18 00:09:25,314 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-18 00:09:25,314 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-18 00:09:25,314 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-18 00:09:25,314 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-18 00:09:25,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-18 00:09:25,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-18 00:09:25,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-18 00:09:25,318 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-18 00:09:25,710 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-18 00:09:25,710 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-18 00:09:25,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:09:25 BoogieIcfgContainer [2020-09-18 00:09:25,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-18 00:09:25,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-18 00:09:25,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-18 00:09:25,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-18 00:09:25,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 12:09:24" (1/3) ... [2020-09-18 00:09:25,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50048b88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:09:25, skipping insertion in model container [2020-09-18 00:09:25,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:09:25" (2/3) ... [2020-09-18 00:09:25,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50048b88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:09:25, skipping insertion in model container [2020-09-18 00:09:25,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:09:25" (3/3) ... [2020-09-18 00:09:25,726 INFO L109 eAbstractionObserver]: Analyzing ICFG safe004_tso.oepc.i [2020-09-18 00:09:25,741 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-18 00:09:25,742 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-18 00:09:25,752 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-18 00:09:25,753 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-18 00:09:25,784 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:09:25,785 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:09:25,785 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:09:25,785 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:09:25,786 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:09:25,786 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:09:25,787 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:09:25,787 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:09:25,787 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:09:25,787 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:09:25,788 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:09:25,788 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:09:25,789 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:09:25,789 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:09:25,789 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:09:25,789 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:09:25,790 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:09:25,790 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:09:25,795 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:09:25,795 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:09:25,796 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:09:25,796 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:09:25,803 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:09:25,803 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:09:25,803 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:09:25,804 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:09:25,809 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:09:25,810 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:09:25,810 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:09:25,810 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:09:25,835 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-18 00:09:25,864 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-18 00:09:25,865 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-18 00:09:25,865 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-18 00:09:25,865 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-18 00:09:25,865 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-18 00:09:25,865 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-18 00:09:25,866 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-18 00:09:25,866 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-18 00:09:25,885 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-09-18 00:09:25,888 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-18 00:09:25,937 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-18 00:09:25,938 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 00:09:25,944 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-18 00:09:25,947 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-18 00:09:25,968 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-18 00:09:25,968 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 00:09:25,969 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-18 00:09:25,971 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-18 00:09:25,972 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-18 00:09:27,355 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-09-18 00:09:27,504 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2483 [2020-09-18 00:09:27,505 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-09-18 00:09:27,510 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-18 00:09:27,539 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-18 00:09:27,542 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-18 00:09:27,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-18 00:09:27,553 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:09:27,554 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:09:27,555 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:09:27,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:09:27,563 INFO L82 PathProgramCache]: Analyzing trace with hash -245765301, now seen corresponding path program 1 times [2020-09-18 00:09:27,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:09:27,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915824675] [2020-09-18 00:09:27,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:09:27,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:09:27,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:09:27,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915824675] [2020-09-18 00:09:27,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:09:27,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-18 00:09:27,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [128125739] [2020-09-18 00:09:27,874 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:09:27,877 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:09:27,896 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-18 00:09:27,896 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:09:27,898 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:09:27,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 00:09:27,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:09:27,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 00:09:27,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:09:27,922 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-18 00:09:27,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:09:27,965 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-09-18 00:09:27,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 00:09:27,968 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-18 00:09:27,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:09:27,987 INFO L225 Difference]: With dead ends: 290 [2020-09-18 00:09:27,988 INFO L226 Difference]: Without dead ends: 226 [2020-09-18 00:09:27,990 INFO L675 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 [2020-09-18 00:09:28,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-09-18 00:09:28,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-09-18 00:09:28,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-18 00:09:28,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-09-18 00:09:28,070 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-09-18 00:09:28,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:09:28,072 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-09-18 00:09:28,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 00:09:28,072 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-09-18 00:09:28,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-18 00:09:28,074 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:09:28,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:09:28,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-18 00:09:28,075 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:09:28,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:09:28,075 INFO L82 PathProgramCache]: Analyzing trace with hash 956609449, now seen corresponding path program 1 times [2020-09-18 00:09:28,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:09:28,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093492062] [2020-09-18 00:09:28,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:09:28,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:09:28,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:09:28,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093492062] [2020-09-18 00:09:28,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:09:28,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-18 00:09:28,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [767347545] [2020-09-18 00:09:28,164 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:09:28,165 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:09:28,167 INFO L274 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-09-18 00:09:28,167 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:09:28,210 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:09:28,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 00:09:28,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:09:28,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 00:09:28,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:09:28,213 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-09-18 00:09:28,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:09:28,222 INFO L93 Difference]: Finished difference Result 212 states and 578 transitions. [2020-09-18 00:09:28,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 00:09:28,223 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-18 00:09:28,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:09:28,226 INFO L225 Difference]: With dead ends: 212 [2020-09-18 00:09:28,226 INFO L226 Difference]: Without dead ends: 212 [2020-09-18 00:09:28,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:09:28,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-09-18 00:09:28,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2020-09-18 00:09:28,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-09-18 00:09:28,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 578 transitions. [2020-09-18 00:09:28,251 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 578 transitions. Word has length 9 [2020-09-18 00:09:28,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:09:28,251 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 578 transitions. [2020-09-18 00:09:28,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 00:09:28,252 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 578 transitions. [2020-09-18 00:09:28,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-18 00:09:28,253 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:09:28,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:09:28,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-18 00:09:28,254 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:09:28,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:09:28,254 INFO L82 PathProgramCache]: Analyzing trace with hash -409878926, now seen corresponding path program 1 times [2020-09-18 00:09:28,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:09:28,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676290324] [2020-09-18 00:09:28,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:09:28,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:09:28,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:09:28,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676290324] [2020-09-18 00:09:28,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:09:28,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 00:09:28,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [470717493] [2020-09-18 00:09:28,343 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:09:28,344 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:09:28,346 INFO L274 McrAutomatonBuilder]: Finished intersection with 17 states and 23 transitions. [2020-09-18 00:09:28,347 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:09:28,383 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:09:28,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 00:09:28,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:09:28,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 00:09:28,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 00:09:28,384 INFO L87 Difference]: Start difference. First operand 212 states and 578 transitions. Second operand 4 states. [2020-09-18 00:09:28,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:09:28,415 INFO L93 Difference]: Finished difference Result 293 states and 785 transitions. [2020-09-18 00:09:28,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 00:09:28,416 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-09-18 00:09:28,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:09:28,418 INFO L225 Difference]: With dead ends: 293 [2020-09-18 00:09:28,418 INFO L226 Difference]: Without dead ends: 197 [2020-09-18 00:09:28,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 00:09:28,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-09-18 00:09:28,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2020-09-18 00:09:28,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-09-18 00:09:28,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 525 transitions. [2020-09-18 00:09:28,442 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 525 transitions. Word has length 10 [2020-09-18 00:09:28,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:09:28,442 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 525 transitions. [2020-09-18 00:09:28,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 00:09:28,442 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 525 transitions. [2020-09-18 00:09:28,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-18 00:09:28,444 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:09:28,444 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:09:28,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-18 00:09:28,445 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:09:28,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:09:28,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1131193343, now seen corresponding path program 1 times [2020-09-18 00:09:28,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:09:28,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124790501] [2020-09-18 00:09:28,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:09:28,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:09:28,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:09:28,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124790501] [2020-09-18 00:09:28,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:09:28,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 00:09:28,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [555865443] [2020-09-18 00:09:28,509 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:09:28,510 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:09:28,512 INFO L274 McrAutomatonBuilder]: Finished intersection with 25 states and 38 transitions. [2020-09-18 00:09:28,513 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:09:28,520 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:09:28,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 00:09:28,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:09:28,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 00:09:28,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:09:28,522 INFO L87 Difference]: Start difference. First operand 197 states and 525 transitions. Second operand 3 states. [2020-09-18 00:09:28,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:09:28,537 INFO L93 Difference]: Finished difference Result 269 states and 681 transitions. [2020-09-18 00:09:28,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 00:09:28,537 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-18 00:09:28,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:09:28,539 INFO L225 Difference]: With dead ends: 269 [2020-09-18 00:09:28,539 INFO L226 Difference]: Without dead ends: 209 [2020-09-18 00:09:28,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:09:28,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-09-18 00:09:28,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 191. [2020-09-18 00:09:28,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-09-18 00:09:28,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 476 transitions. [2020-09-18 00:09:28,551 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 476 transitions. Word has length 11 [2020-09-18 00:09:28,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:09:28,552 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 476 transitions. [2020-09-18 00:09:28,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 00:09:28,552 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 476 transitions. [2020-09-18 00:09:28,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-18 00:09:28,554 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:09:28,554 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:09:28,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-18 00:09:28,554 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:09:28,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:09:28,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1251156259, now seen corresponding path program 1 times [2020-09-18 00:09:28,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:09:28,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836220924] [2020-09-18 00:09:28,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:09:28,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:09:28,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:09:28,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836220924] [2020-09-18 00:09:28,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:09:28,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 00:09:28,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [688381850] [2020-09-18 00:09:28,625 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:09:28,629 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:09:28,632 INFO L274 McrAutomatonBuilder]: Finished intersection with 27 states and 45 transitions. [2020-09-18 00:09:28,632 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:09:28,695 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:09:28,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 00:09:28,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:09:28,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 00:09:28,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 00:09:28,696 INFO L87 Difference]: Start difference. First operand 191 states and 476 transitions. Second operand 4 states. [2020-09-18 00:09:28,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:09:28,729 INFO L93 Difference]: Finished difference Result 250 states and 578 transitions. [2020-09-18 00:09:28,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-18 00:09:28,730 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-18 00:09:28,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:09:28,731 INFO L225 Difference]: With dead ends: 250 [2020-09-18 00:09:28,731 INFO L226 Difference]: Without dead ends: 158 [2020-09-18 00:09:28,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 00:09:28,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-09-18 00:09:28,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 146. [2020-09-18 00:09:28,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-09-18 00:09:28,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 330 transitions. [2020-09-18 00:09:28,738 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 330 transitions. Word has length 11 [2020-09-18 00:09:28,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:09:28,738 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 330 transitions. [2020-09-18 00:09:28,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 00:09:28,739 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 330 transitions. [2020-09-18 00:09:28,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-18 00:09:28,740 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:09:28,740 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:09:28,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-18 00:09:28,740 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:09:28,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:09:28,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1304596236, now seen corresponding path program 1 times [2020-09-18 00:09:28,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:09:28,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320445605] [2020-09-18 00:09:28,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:09:28,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:09:28,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:09:28,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320445605] [2020-09-18 00:09:28,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:09:28,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-18 00:09:28,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [565632760] [2020-09-18 00:09:28,791 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:09:28,793 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:09:28,794 INFO L274 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-09-18 00:09:28,810 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:09:28,845 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:09:28,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 00:09:28,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:09:28,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 00:09:28,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:09:28,846 INFO L87 Difference]: Start difference. First operand 146 states and 330 transitions. Second operand 3 states. [2020-09-18 00:09:28,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:09:28,852 INFO L93 Difference]: Finished difference Result 138 states and 304 transitions. [2020-09-18 00:09:28,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 00:09:28,852 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-18 00:09:28,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:09:28,853 INFO L225 Difference]: With dead ends: 138 [2020-09-18 00:09:28,854 INFO L226 Difference]: Without dead ends: 138 [2020-09-18 00:09:28,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:09:28,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-09-18 00:09:28,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-09-18 00:09:28,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-09-18 00:09:28,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 304 transitions. [2020-09-18 00:09:28,859 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 304 transitions. Word has length 11 [2020-09-18 00:09:28,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:09:28,859 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 304 transitions. [2020-09-18 00:09:28,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 00:09:28,859 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 304 transitions. [2020-09-18 00:09:28,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-18 00:09:28,861 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:09:28,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:09:28,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-18 00:09:28,861 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:09:28,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:09:28,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1787779324, now seen corresponding path program 1 times [2020-09-18 00:09:28,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:09:28,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243591208] [2020-09-18 00:09:28,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:09:28,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:09:28,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:09:28,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243591208] [2020-09-18 00:09:28,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:09:28,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 00:09:28,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1469490891] [2020-09-18 00:09:28,910 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:09:28,911 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:09:28,913 INFO L274 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-09-18 00:09:28,913 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:09:28,922 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:09:28,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 00:09:28,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:09:28,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 00:09:28,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:09:28,923 INFO L87 Difference]: Start difference. First operand 138 states and 304 transitions. Second operand 3 states. [2020-09-18 00:09:28,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:09:28,936 INFO L93 Difference]: Finished difference Result 146 states and 304 transitions. [2020-09-18 00:09:28,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 00:09:28,937 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-09-18 00:09:28,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:09:28,938 INFO L225 Difference]: With dead ends: 146 [2020-09-18 00:09:28,938 INFO L226 Difference]: Without dead ends: 56 [2020-09-18 00:09:28,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:09:28,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-18 00:09:28,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-09-18 00:09:28,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-18 00:09:28,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 108 transitions. [2020-09-18 00:09:28,941 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 108 transitions. Word has length 12 [2020-09-18 00:09:28,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:09:28,942 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 108 transitions. [2020-09-18 00:09:28,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 00:09:28,942 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 108 transitions. [2020-09-18 00:09:28,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-18 00:09:28,943 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:09:28,943 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:09:28,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-18 00:09:28,944 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:09:28,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:09:28,944 INFO L82 PathProgramCache]: Analyzing trace with hash 413447767, now seen corresponding path program 1 times [2020-09-18 00:09:28,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:09:28,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61719485] [2020-09-18 00:09:28,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:09:28,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:09:28,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:09:28,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61719485] [2020-09-18 00:09:29,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:09:29,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 00:09:29,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [76925245] [2020-09-18 00:09:29,000 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:09:29,002 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:09:29,006 INFO L274 McrAutomatonBuilder]: Finished intersection with 33 states and 53 transitions. [2020-09-18 00:09:29,006 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:09:29,021 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:09:29,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 00:09:29,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:09:29,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 00:09:29,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 00:09:29,022 INFO L87 Difference]: Start difference. First operand 56 states and 108 transitions. Second operand 4 states. [2020-09-18 00:09:29,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:09:29,054 INFO L93 Difference]: Finished difference Result 64 states and 120 transitions. [2020-09-18 00:09:29,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 00:09:29,055 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-18 00:09:29,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:09:29,056 INFO L225 Difference]: With dead ends: 64 [2020-09-18 00:09:29,056 INFO L226 Difference]: Without dead ends: 52 [2020-09-18 00:09:29,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 00:09:29,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-18 00:09:29,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-09-18 00:09:29,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-18 00:09:29,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 96 transitions. [2020-09-18 00:09:29,059 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 96 transitions. Word has length 13 [2020-09-18 00:09:29,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:09:29,059 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 96 transitions. [2020-09-18 00:09:29,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 00:09:29,060 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 96 transitions. [2020-09-18 00:09:29,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-18 00:09:29,060 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:09:29,060 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:09:29,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-18 00:09:29,061 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:09:29,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:09:29,061 INFO L82 PathProgramCache]: Analyzing trace with hash 413415217, now seen corresponding path program 2 times [2020-09-18 00:09:29,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:09:29,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841256210] [2020-09-18 00:09:29,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:09:29,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:09:29,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:09:29,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841256210] [2020-09-18 00:09:29,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:09:29,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 00:09:29,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1111646569] [2020-09-18 00:09:29,161 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:09:29,164 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:09:29,170 INFO L274 McrAutomatonBuilder]: Finished intersection with 33 states and 53 transitions. [2020-09-18 00:09:29,170 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:09:29,224 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:09:29,258 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:09:29,294 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:09:29,322 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:09:29,348 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:09:29,359 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4813#(not (= 3 ~__unbuffered_cnt~0))] [2020-09-18 00:09:29,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-18 00:09:29,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:09:29,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-18 00:09:29,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-18 00:09:29,360 INFO L87 Difference]: Start difference. First operand 52 states and 96 transitions. Second operand 5 states. [2020-09-18 00:09:29,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:09:29,422 INFO L93 Difference]: Finished difference Result 45 states and 76 transitions. [2020-09-18 00:09:29,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-18 00:09:29,423 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-18 00:09:29,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:09:29,423 INFO L225 Difference]: With dead ends: 45 [2020-09-18 00:09:29,424 INFO L226 Difference]: Without dead ends: 31 [2020-09-18 00:09:29,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-18 00:09:29,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-18 00:09:29,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-18 00:09:29,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-18 00:09:29,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 44 transitions. [2020-09-18 00:09:29,426 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 44 transitions. Word has length 13 [2020-09-18 00:09:29,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:09:29,426 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 44 transitions. [2020-09-18 00:09:29,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-18 00:09:29,426 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 44 transitions. [2020-09-18 00:09:29,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-18 00:09:29,427 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:09:29,427 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:09:29,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-18 00:09:29,428 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:09:29,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:09:29,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1126720068, now seen corresponding path program 1 times [2020-09-18 00:09:29,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:09:29,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042287701] [2020-09-18 00:09:29,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:09:29,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:09:29,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:09:29,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042287701] [2020-09-18 00:09:29,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:09:29,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-18 00:09:29,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1200180079] [2020-09-18 00:09:29,519 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:09:29,521 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:09:29,526 INFO L274 McrAutomatonBuilder]: Finished intersection with 35 states and 54 transitions. [2020-09-18 00:09:29,526 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:09:29,561 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:09:29,601 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4931#(<= ~__unbuffered_cnt~0 0)] [2020-09-18 00:09:29,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-18 00:09:29,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:09:29,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-18 00:09:29,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-18 00:09:29,602 INFO L87 Difference]: Start difference. First operand 31 states and 44 transitions. Second operand 7 states. [2020-09-18 00:09:29,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:09:29,633 INFO L93 Difference]: Finished difference Result 28 states and 41 transitions. [2020-09-18 00:09:29,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-18 00:09:29,634 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-18 00:09:29,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:09:29,634 INFO L225 Difference]: With dead ends: 28 [2020-09-18 00:09:29,634 INFO L226 Difference]: Without dead ends: 0 [2020-09-18 00:09:29,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-18 00:09:29,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-18 00:09:29,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-18 00:09:29,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-18 00:09:29,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-18 00:09:29,636 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-09-18 00:09:29,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:09:29,636 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-18 00:09:29,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-18 00:09:29,637 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-18 00:09:29,637 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-18 00:09:29,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-18 00:09:29,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 12:09:29 BasicIcfg [2020-09-18 00:09:29,642 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-18 00:09:29,645 INFO L168 Benchmark]: Toolchain (without parser) took 5297.95 ms. Allocated memory was 139.5 MB in the beginning and 250.1 MB in the end (delta: 110.6 MB). Free memory was 101.7 MB in the beginning and 124.8 MB in the end (delta: -23.0 MB). Peak memory consumption was 87.6 MB. Max. memory is 7.1 GB. [2020-09-18 00:09:29,646 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-18 00:09:29,647 INFO L168 Benchmark]: CACSL2BoogieTranslator took 790.96 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 101.1 MB in the beginning and 160.9 MB in the end (delta: -59.8 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. [2020-09-18 00:09:29,648 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.66 ms. Allocated memory is still 202.9 MB. Free memory was 160.9 MB in the beginning and 158.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-09-18 00:09:29,654 INFO L168 Benchmark]: Boogie Preprocessor took 32.88 ms. Allocated memory is still 202.9 MB. Free memory was 158.7 MB in the beginning and 157.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-18 00:09:29,655 INFO L168 Benchmark]: RCFGBuilder took 481.67 ms. Allocated memory is still 202.9 MB. Free memory was 157.4 MB in the beginning and 135.1 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-09-18 00:09:29,656 INFO L168 Benchmark]: TraceAbstraction took 3925.06 ms. Allocated memory was 202.9 MB in the beginning and 250.1 MB in the end (delta: 47.2 MB). Free memory was 134.4 MB in the beginning and 124.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 56.8 MB. Max. memory is 7.1 GB. [2020-09-18 00:09:29,660 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 790.96 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 101.1 MB in the beginning and 160.9 MB in the end (delta: -59.8 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 58.66 ms. Allocated memory is still 202.9 MB. Free memory was 160.9 MB in the beginning and 158.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.88 ms. Allocated memory is still 202.9 MB. Free memory was 158.7 MB in the beginning and 157.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 481.67 ms. Allocated memory is still 202.9 MB. Free memory was 157.4 MB in the beginning and 135.1 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3925.06 ms. Allocated memory was 202.9 MB in the beginning and 250.1 MB in the end (delta: 47.2 MB). Free memory was 134.4 MB in the beginning and 124.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 56.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 656 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2483 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, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 197 SDtfs, 107 SDslu, 180 SDs, 0 SdLazy, 85 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 82 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s 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, 10 MinimizatonAttempts, 30 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 103 ConstructedInterpolants, 0 QuantifiedInterpolants, 3095 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...