/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe018_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-21 22:02:22,804 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-21 22:02:22,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-21 22:02:22,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-21 22:02:22,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-21 22:02:22,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-21 22:02:22,864 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-21 22:02:22,868 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-21 22:02:22,870 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-21 22:02:22,875 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-21 22:02:22,876 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-21 22:02:22,877 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-21 22:02:22,877 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-21 22:02:22,880 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-21 22:02:22,883 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-21 22:02:22,885 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-21 22:02:22,886 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-21 22:02:22,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-21 22:02:22,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-21 22:02:22,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-21 22:02:22,902 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-21 22:02:22,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-21 22:02:22,904 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-21 22:02:22,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-21 22:02:22,918 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-21 22:02:22,919 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-21 22:02:22,922 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-21 22:02:22,923 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-21 22:02:22,924 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-21 22:02:22,928 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-21 22:02:22,928 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-21 22:02:22,929 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-21 22:02:22,930 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-21 22:02:22,934 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-21 22:02:22,935 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-21 22:02:22,935 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-21 22:02:22,935 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-21 22:02:22,936 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-21 22:02:22,936 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-21 22:02:22,939 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-21 22:02:22,940 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-21 22:02:22,940 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-21 22:02:22,979 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-21 22:02:22,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-21 22:02:22,981 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-21 22:02:22,981 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-21 22:02:22,981 INFO L138 SettingsManager]: * Use SBE=true [2020-10-21 22:02:22,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-21 22:02:22,982 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-21 22:02:22,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-21 22:02:22,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-21 22:02:22,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-21 22:02:22,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-21 22:02:22,983 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-21 22:02:22,983 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-21 22:02:22,983 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-21 22:02:22,983 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-21 22:02:22,983 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-21 22:02:22,984 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-21 22:02:22,984 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-21 22:02:22,984 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-21 22:02:22,984 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-21 22:02:22,984 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-21 22:02:22,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 22:02:22,985 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-21 22:02:22,985 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-21 22:02:22,985 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-21 22:02:22,985 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-21 22:02:22,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-21 22:02:22,986 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-21 22:02:22,986 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-21 22:02:22,986 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-21 22:02:23,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-21 22:02:23,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-21 22:02:23,310 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-21 22:02:23,312 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-21 22:02:23,312 INFO L275 PluginConnector]: CDTParser initialized [2020-10-21 22:02:23,313 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_tso.oepc.i [2020-10-21 22:02:23,380 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5755dadaa/999f43b66f10407a8b4e406bfbb89dd0/FLAG3f5620067 [2020-10-21 22:02:23,920 INFO L306 CDTParser]: Found 1 translation units. [2020-10-21 22:02:23,920 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_tso.oepc.i [2020-10-21 22:02:23,943 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5755dadaa/999f43b66f10407a8b4e406bfbb89dd0/FLAG3f5620067 [2020-10-21 22:02:24,195 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5755dadaa/999f43b66f10407a8b4e406bfbb89dd0 [2020-10-21 22:02:24,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-21 22:02:24,213 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-21 22:02:24,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-21 22:02:24,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-21 22:02:24,220 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-21 22:02:24,222 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 10:02:24" (1/1) ... [2020-10-21 22:02:24,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c98d95b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:24, skipping insertion in model container [2020-10-21 22:02:24,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 10:02:24" (1/1) ... [2020-10-21 22:02:24,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-21 22:02:24,299 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-21 22:02:24,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 22:02:24,793 INFO L203 MainTranslator]: Completed pre-run [2020-10-21 22:02:24,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 22:02:24,937 INFO L208 MainTranslator]: Completed translation [2020-10-21 22:02:24,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:24 WrapperNode [2020-10-21 22:02:24,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-21 22:02:24,938 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-21 22:02:24,938 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-21 22:02:24,938 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-21 22:02:24,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:24" (1/1) ... [2020-10-21 22:02:24,963 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:24" (1/1) ... [2020-10-21 22:02:24,984 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-21 22:02:24,984 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-21 22:02:24,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-21 22:02:24,985 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-21 22:02:24,993 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:24" (1/1) ... [2020-10-21 22:02:24,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:24" (1/1) ... [2020-10-21 22:02:24,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:24" (1/1) ... [2020-10-21 22:02:24,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:24" (1/1) ... [2020-10-21 22:02:25,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:24" (1/1) ... [2020-10-21 22:02:25,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:24" (1/1) ... [2020-10-21 22:02:25,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:24" (1/1) ... [2020-10-21 22:02:25,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-21 22:02:25,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-21 22:02:25,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-21 22:02:25,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-21 22:02:25,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:24" (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 [2020-10-21 22:02:25,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-21 22:02:25,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-21 22:02:25,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-21 22:02:25,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-21 22:02:25,078 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-21 22:02:25,079 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-21 22:02:25,079 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-21 22:02:25,079 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-21 22:02:25,079 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-21 22:02:25,079 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-21 22:02:25,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-21 22:02:25,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-21 22:02:25,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-21 22:02:25,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-21 22:02:25,082 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-21 22:02:25,452 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-21 22:02:25,453 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-21 22:02:25,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 10:02:25 BoogieIcfgContainer [2020-10-21 22:02:25,455 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-21 22:02:25,457 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-21 22:02:25,457 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-21 22:02:25,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-21 22:02:25,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 10:02:24" (1/3) ... [2020-10-21 22:02:25,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10a42518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 10:02:25, skipping insertion in model container [2020-10-21 22:02:25,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:24" (2/3) ... [2020-10-21 22:02:25,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10a42518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 10:02:25, skipping insertion in model container [2020-10-21 22:02:25,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 10:02:25" (3/3) ... [2020-10-21 22:02:25,470 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_tso.oepc.i [2020-10-21 22:02:25,497 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-21 22:02:25,498 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-21 22:02:25,512 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-21 22:02:25,513 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-21 22:02:25,545 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:25,545 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:25,546 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:25,546 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:25,547 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:25,547 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:25,548 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:25,548 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:25,548 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:25,548 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:25,549 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:25,549 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:25,550 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:25,550 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:25,550 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:25,550 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:25,551 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:25,551 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:25,555 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:25,556 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:25,556 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:25,556 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:25,563 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:25,564 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:25,564 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:25,564 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:25,568 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:25,568 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:25,569 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:25,569 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:25,571 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 22:02:25,584 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-21 22:02:25,603 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 22:02:25,603 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 22:02:25,603 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-21 22:02:25,603 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 22:02:25,604 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 22:02:25,604 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 22:02:25,604 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 22:02:25,604 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 22:02:25,618 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-21 22:02:25,621 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-21 22:02:25,623 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-21 22:02:25,625 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-10-21 22:02:25,678 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-10-21 22:02:25,679 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-21 22:02:25,684 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2020-10-21 22:02:25,687 INFO L116 LiptonReduction]: Number of co-enabled transitions 1348 [2020-10-21 22:02:27,229 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-21 22:02:27,536 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-10-21 22:02:27,829 INFO L131 LiptonReduction]: Checked pairs total: 2462 [2020-10-21 22:02:27,829 INFO L133 LiptonReduction]: Total number of compositions: 71 [2020-10-21 22:02:27,836 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-21 22:02:27,887 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-10-21 22:02:27,888 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-10-21 22:02:27,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-21 22:02:27,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:02:27,898 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:02:27,898 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:02:27,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:02:27,903 INFO L82 PathProgramCache]: Analyzing trace with hash 911607414, now seen corresponding path program 1 times [2020-10-21 22:02:27,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:02:27,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442652039] [2020-10-21 22:02:27,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:02:28,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:02:28,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:02:28,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442652039] [2020-10-21 22:02:28,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:02:28,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 22:02:28,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551191707] [2020-10-21 22:02:28,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-21 22:02:28,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:02:28,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-21 22:02:28,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-21 22:02:28,113 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-10-21 22:02:28,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:02:28,140 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-10-21 22:02:28,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-21 22:02:28,142 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-21 22:02:28,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:02:28,158 INFO L225 Difference]: With dead ends: 274 [2020-10-21 22:02:28,158 INFO L226 Difference]: Without dead ends: 226 [2020-10-21 22:02:28,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-21 22:02:28,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-21 22:02:28,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-10-21 22:02:28,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-21 22:02:28,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-10-21 22:02:28,228 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-10-21 22:02:28,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:02:28,230 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-10-21 22:02:28,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-21 22:02:28,230 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-10-21 22:02:28,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 22:02:28,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:02:28,232 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:02:28,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-21 22:02:28,232 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:02:28,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:02:28,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1804948320, now seen corresponding path program 1 times [2020-10-21 22:02:28,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:02:28,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608765353] [2020-10-21 22:02:28,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:02:28,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:02:28,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:02:28,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608765353] [2020-10-21 22:02:28,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:02:28,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 22:02:28,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449377147] [2020-10-21 22:02:28,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 22:02:28,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:02:28,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 22:02:28,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 22:02:28,390 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 4 states. [2020-10-21 22:02:28,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:02:28,432 INFO L93 Difference]: Finished difference Result 250 states and 668 transitions. [2020-10-21 22:02:28,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-21 22:02:28,433 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-21 22:02:28,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:02:28,436 INFO L225 Difference]: With dead ends: 250 [2020-10-21 22:02:28,436 INFO L226 Difference]: Without dead ends: 202 [2020-10-21 22:02:28,437 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 [2020-10-21 22:02:28,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-21 22:02:28,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-21 22:02:28,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-21 22:02:28,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 552 transitions. [2020-10-21 22:02:28,458 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 552 transitions. Word has length 9 [2020-10-21 22:02:28,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:02:28,458 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 552 transitions. [2020-10-21 22:02:28,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 22:02:28,459 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 552 transitions. [2020-10-21 22:02:28,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-21 22:02:28,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:02:28,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:02:28,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-21 22:02:28,461 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:02:28,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:02:28,461 INFO L82 PathProgramCache]: Analyzing trace with hash 834020007, now seen corresponding path program 1 times [2020-10-21 22:02:28,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:02:28,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261174625] [2020-10-21 22:02:28,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:02:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:02:28,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:02:28,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261174625] [2020-10-21 22:02:28,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:02:28,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:02:28,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656026673] [2020-10-21 22:02:28,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:02:28,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:02:28,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:02:28,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:02:28,587 INFO L87 Difference]: Start difference. First operand 202 states and 552 transitions. Second operand 5 states. [2020-10-21 22:02:28,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:02:28,653 INFO L93 Difference]: Finished difference Result 238 states and 627 transitions. [2020-10-21 22:02:28,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:02:28,653 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-21 22:02:28,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:02:28,655 INFO L225 Difference]: With dead ends: 238 [2020-10-21 22:02:28,655 INFO L226 Difference]: Without dead ends: 106 [2020-10-21 22:02:28,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-21 22:02:28,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-21 22:02:28,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2020-10-21 22:02:28,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-21 22:02:28,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 258 transitions. [2020-10-21 22:02:28,667 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 258 transitions. Word has length 10 [2020-10-21 22:02:28,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:02:28,667 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 258 transitions. [2020-10-21 22:02:28,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:02:28,668 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 258 transitions. [2020-10-21 22:02:28,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 22:02:28,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:02:28,669 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:02:28,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-21 22:02:28,670 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:02:28,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:02:28,670 INFO L82 PathProgramCache]: Analyzing trace with hash 739020719, now seen corresponding path program 1 times [2020-10-21 22:02:28,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:02:28,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689915741] [2020-10-21 22:02:28,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:02:28,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:02:28,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:02:28,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689915741] [2020-10-21 22:02:28,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:02:28,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:02:28,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940261248] [2020-10-21 22:02:28,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:02:28,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:02:28,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:02:28,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:02:28,759 INFO L87 Difference]: Start difference. First operand 106 states and 258 transitions. Second operand 5 states. [2020-10-21 22:02:28,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:02:28,819 INFO L93 Difference]: Finished difference Result 148 states and 351 transitions. [2020-10-21 22:02:28,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:02:28,819 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-21 22:02:28,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:02:28,820 INFO L225 Difference]: With dead ends: 148 [2020-10-21 22:02:28,821 INFO L226 Difference]: Without dead ends: 76 [2020-10-21 22:02:28,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-21 22:02:28,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-21 22:02:28,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-10-21 22:02:28,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-21 22:02:28,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 169 transitions. [2020-10-21 22:02:28,828 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 169 transitions. Word has length 12 [2020-10-21 22:02:28,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:02:28,828 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 169 transitions. [2020-10-21 22:02:28,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:02:28,829 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 169 transitions. [2020-10-21 22:02:28,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 22:02:28,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:02:28,830 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:02:28,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-21 22:02:28,830 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:02:28,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:02:28,831 INFO L82 PathProgramCache]: Analyzing trace with hash -254241509, now seen corresponding path program 1 times [2020-10-21 22:02:28,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:02:28,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732105366] [2020-10-21 22:02:28,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:02:28,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:02:28,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:02:28,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732105366] [2020-10-21 22:02:28,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:02:28,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:02:28,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275467564] [2020-10-21 22:02:28,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 22:02:28,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:02:28,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 22:02:28,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 22:02:28,890 INFO L87 Difference]: Start difference. First operand 76 states and 169 transitions. Second operand 4 states. [2020-10-21 22:02:28,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:02:28,921 INFO L93 Difference]: Finished difference Result 87 states and 174 transitions. [2020-10-21 22:02:28,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-21 22:02:28,922 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-21 22:02:28,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:02:28,923 INFO L225 Difference]: With dead ends: 87 [2020-10-21 22:02:28,923 INFO L226 Difference]: Without dead ends: 66 [2020-10-21 22:02:28,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:02:28,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-21 22:02:28,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-21 22:02:28,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-21 22:02:28,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 133 transitions. [2020-10-21 22:02:28,928 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 133 transitions. Word has length 13 [2020-10-21 22:02:28,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:02:28,929 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 133 transitions. [2020-10-21 22:02:28,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 22:02:28,929 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 133 transitions. [2020-10-21 22:02:28,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-21 22:02:28,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:02:28,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:02:28,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-21 22:02:28,931 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:02:28,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:02:28,931 INFO L82 PathProgramCache]: Analyzing trace with hash 734665460, now seen corresponding path program 1 times [2020-10-21 22:02:28,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:02:28,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088392707] [2020-10-21 22:02:28,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:02:28,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:02:28,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:02:28,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088392707] [2020-10-21 22:02:28,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:02:29,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-21 22:02:29,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528763270] [2020-10-21 22:02:29,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:02:29,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:02:29,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:02:29,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:02:29,001 INFO L87 Difference]: Start difference. First operand 66 states and 133 transitions. Second operand 5 states. [2020-10-21 22:02:29,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:02:29,037 INFO L93 Difference]: Finished difference Result 62 states and 108 transitions. [2020-10-21 22:02:29,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:02:29,038 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-21 22:02:29,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:02:29,038 INFO L225 Difference]: With dead ends: 62 [2020-10-21 22:02:29,039 INFO L226 Difference]: Without dead ends: 47 [2020-10-21 22:02:29,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-21 22:02:29,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-21 22:02:29,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-21 22:02:29,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-21 22:02:29,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 78 transitions. [2020-10-21 22:02:29,043 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 78 transitions. Word has length 14 [2020-10-21 22:02:29,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:02:29,043 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 78 transitions. [2020-10-21 22:02:29,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:02:29,043 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 78 transitions. [2020-10-21 22:02:29,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 22:02:29,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:02:29,044 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:02:29,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-21 22:02:29,045 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:02:29,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:02:29,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1299079363, now seen corresponding path program 1 times [2020-10-21 22:02:29,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:02:29,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972329772] [2020-10-21 22:02:29,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:02:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:02:29,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:02:29,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972329772] [2020-10-21 22:02:29,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:02:29,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 22:02:29,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641315895] [2020-10-21 22:02:29,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-21 22:02:29,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:02:29,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-21 22:02:29,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-21 22:02:29,107 INFO L87 Difference]: Start difference. First operand 47 states and 78 transitions. Second operand 6 states. [2020-10-21 22:02:29,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:02:29,150 INFO L93 Difference]: Finished difference Result 40 states and 62 transitions. [2020-10-21 22:02:29,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-21 22:02:29,150 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-21 22:02:29,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:02:29,151 INFO L225 Difference]: With dead ends: 40 [2020-10-21 22:02:29,151 INFO L226 Difference]: Without dead ends: 34 [2020-10-21 22:02:29,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:02:29,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-21 22:02:29,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-10-21 22:02:29,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-21 22:02:29,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 52 transitions. [2020-10-21 22:02:29,154 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 52 transitions. Word has length 15 [2020-10-21 22:02:29,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:02:29,154 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 52 transitions. [2020-10-21 22:02:29,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-21 22:02:29,155 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 52 transitions. [2020-10-21 22:02:29,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-21 22:02:29,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:02:29,155 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:02:29,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-21 22:02:29,156 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:02:29,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:02:29,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1284707522, now seen corresponding path program 1 times [2020-10-21 22:02:29,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:02:29,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180022694] [2020-10-21 22:02:29,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:02:29,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:02:29,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:02:29,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180022694] [2020-10-21 22:02:29,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:02:29,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-21 22:02:29,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170231759] [2020-10-21 22:02:29,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-21 22:02:29,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:02:29,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-21 22:02:29,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-21 22:02:29,315 INFO L87 Difference]: Start difference. First operand 34 states and 52 transitions. Second operand 10 states. [2020-10-21 22:02:29,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:02:29,544 INFO L93 Difference]: Finished difference Result 46 states and 64 transitions. [2020-10-21 22:02:29,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:02:29,544 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-10-21 22:02:29,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:02:29,545 INFO L225 Difference]: With dead ends: 46 [2020-10-21 22:02:29,545 INFO L226 Difference]: Without dead ends: 28 [2020-10-21 22:02:29,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-10-21 22:02:29,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-21 22:02:29,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-21 22:02:29,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-21 22:02:29,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2020-10-21 22:02:29,548 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 17 [2020-10-21 22:02:29,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:02:29,548 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-10-21 22:02:29,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-21 22:02:29,549 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-10-21 22:02:29,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-21 22:02:29,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:02:29,549 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:02:29,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-21 22:02:29,550 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:02:29,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:02:29,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1493599964, now seen corresponding path program 2 times [2020-10-21 22:02:29,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:02:29,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560353581] [2020-10-21 22:02:29,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:02:29,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:02:29,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:02:29,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560353581] [2020-10-21 22:02:29,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:02:29,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-21 22:02:29,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829017155] [2020-10-21 22:02:29,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-21 22:02:29,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:02:29,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-21 22:02:29,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-21 22:02:29,678 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 10 states. [2020-10-21 22:02:29,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:02:29,757 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2020-10-21 22:02:29,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-21 22:02:29,757 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-10-21 22:02:29,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:02:29,758 INFO L225 Difference]: With dead ends: 27 [2020-10-21 22:02:29,758 INFO L226 Difference]: Without dead ends: 0 [2020-10-21 22:02:29,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-21 22:02:29,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-21 22:02:29,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-21 22:02:29,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-21 22:02:29,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-21 22:02:29,759 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-21 22:02:29,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:02:29,760 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-21 22:02:29,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-21 22:02:29,760 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-21 22:02:29,760 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-21 22:02:29,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-21 22:02:29,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 10:02:29 BasicIcfg [2020-10-21 22:02:29,764 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-21 22:02:29,766 INFO L168 Benchmark]: Toolchain (without parser) took 5558.83 ms. Allocated memory was 141.0 MB in the beginning and 278.4 MB in the end (delta: 137.4 MB). Free memory was 102.6 MB in the beginning and 173.9 MB in the end (delta: -71.2 MB). Peak memory consumption was 66.1 MB. Max. memory is 7.1 GB. [2020-10-21 22:02:29,767 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.1 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-10-21 22:02:29,768 INFO L168 Benchmark]: CACSL2BoogieTranslator took 721.26 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 101.8 MB in the beginning and 159.5 MB in the end (delta: -57.7 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-10-21 22:02:29,769 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.90 ms. Allocated memory is still 203.9 MB. Free memory was 159.5 MB in the beginning and 157.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-21 22:02:29,770 INFO L168 Benchmark]: Boogie Preprocessor took 27.64 ms. Allocated memory is still 203.9 MB. Free memory was 157.7 MB in the beginning and 155.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-21 22:02:29,770 INFO L168 Benchmark]: RCFGBuilder took 443.41 ms. Allocated memory is still 203.9 MB. Free memory was 155.8 MB in the beginning and 132.0 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-10-21 22:02:29,771 INFO L168 Benchmark]: TraceAbstraction took 4306.96 ms. Allocated memory was 203.9 MB in the beginning and 278.4 MB in the end (delta: 74.4 MB). Free memory was 132.0 MB in the beginning and 173.9 MB in the end (delta: -41.9 MB). Peak memory consumption was 32.5 MB. Max. memory is 7.1 GB. [2020-10-21 22:02:29,775 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.1 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 721.26 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 101.8 MB in the beginning and 159.5 MB in the end (delta: -57.7 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 45.90 ms. Allocated memory is still 203.9 MB. Free memory was 159.5 MB in the beginning and 157.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.64 ms. Allocated memory is still 203.9 MB. Free memory was 157.7 MB in the beginning and 155.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 443.41 ms. Allocated memory is still 203.9 MB. Free memory was 155.8 MB in the beginning and 132.0 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4306.96 ms. Allocated memory was 203.9 MB in the beginning and 278.4 MB in the end (delta: 74.4 MB). Free memory was 132.0 MB in the beginning and 173.9 MB in the end (delta: -41.9 MB). Peak memory consumption was 32.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 949 VarBasedMoverChecksPositive, 37 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 25 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 82 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.2s, 85 PlacesBefore, 31 PlacesAfterwards, 78 TransitionsBefore, 22 TransitionsAfterwards, 1348 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 2 ChoiceCompositions, 71 TotalNumberOfCompositions, 2462 MoverChecksTotal - PositiveResult [Line: 17]: 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, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.1s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 164 SDtfs, 184 SDslu, 379 SDs, 0 SdLazy, 325 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 5856 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...