/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/safe021_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 13:41:34,955 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 13:41:34,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 13:41:34,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 13:41:34,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 13:41:34,983 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 13:41:34,985 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 13:41:34,986 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 13:41:34,988 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 13:41:34,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 13:41:34,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 13:41:34,992 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 13:41:34,992 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 13:41:34,993 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 13:41:34,994 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 13:41:34,995 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 13:41:34,996 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 13:41:34,997 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 13:41:34,999 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 13:41:35,001 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 13:41:35,003 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 13:41:35,004 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 13:41:35,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 13:41:35,006 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 13:41:35,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 13:41:35,008 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 13:41:35,009 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 13:41:35,010 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 13:41:35,010 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 13:41:35,011 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 13:41:35,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 13:41:35,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 13:41:35,013 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 13:41:35,014 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 13:41:35,015 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 13:41:35,015 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 13:41:35,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 13:41:35,016 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 13:41:35,016 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 13:41:35,020 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 13:41:35,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 13:41:35,024 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-16 13:41:35,053 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 13:41:35,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 13:41:35,054 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 13:41:35,054 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 13:41:35,055 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 13:41:35,055 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 13:41:35,055 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 13:41:35,055 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 13:41:35,055 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 13:41:35,056 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 13:41:35,056 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 13:41:35,056 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 13:41:35,056 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 13:41:35,056 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 13:41:35,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 13:41:35,057 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 13:41:35,057 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 13:41:35,057 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 13:41:35,057 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 13:41:35,058 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 13:41:35,058 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 13:41:35,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 13:41:35,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 13:41:35,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 13:41:35,059 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 13:41:35,059 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 13:41:35,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 13:41:35,059 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 13:41:35,059 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 13:41:35,060 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 13:41:35,060 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 13:41:35,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 13:41:35,418 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 13:41:35,422 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 13:41:35,424 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 13:41:35,424 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 13:41:35,425 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.oepc.i [2020-10-16 13:41:35,488 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ca2c0f3d/e659c84123b844068e6be55d58415bd1/FLAG3357180d4 [2020-10-16 13:41:36,015 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 13:41:36,016 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe021_tso.oepc.i [2020-10-16 13:41:36,035 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ca2c0f3d/e659c84123b844068e6be55d58415bd1/FLAG3357180d4 [2020-10-16 13:41:36,350 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ca2c0f3d/e659c84123b844068e6be55d58415bd1 [2020-10-16 13:41:36,357 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 13:41:36,359 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 13:41:36,360 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 13:41:36,360 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 13:41:36,364 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 13:41:36,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:41:36" (1/1) ... [2020-10-16 13:41:36,367 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74056386 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:36, skipping insertion in model container [2020-10-16 13:41:36,368 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:41:36" (1/1) ... [2020-10-16 13:41:36,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 13:41:36,431 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 13:41:36,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:41:36,889 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 13:41:36,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:41:37,019 INFO L208 MainTranslator]: Completed translation [2020-10-16 13:41:37,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:37 WrapperNode [2020-10-16 13:41:37,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 13:41:37,020 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 13:41:37,020 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 13:41:37,020 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 13:41:37,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:37" (1/1) ... [2020-10-16 13:41:37,046 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:37" (1/1) ... [2020-10-16 13:41:37,070 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 13:41:37,070 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 13:41:37,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 13:41:37,071 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 13:41:37,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:37" (1/1) ... [2020-10-16 13:41:37,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:37" (1/1) ... [2020-10-16 13:41:37,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:37" (1/1) ... [2020-10-16 13:41:37,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:37" (1/1) ... [2020-10-16 13:41:37,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:37" (1/1) ... [2020-10-16 13:41:37,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:37" (1/1) ... [2020-10-16 13:41:37,095 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:37" (1/1) ... [2020-10-16 13:41:37,098 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 13:41:37,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 13:41:37,099 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 13:41:37,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 13:41:37,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 13:41:37,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 13:41:37,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 13:41:37,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 13:41:37,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 13:41:37,172 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 13:41:37,172 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 13:41:37,173 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 13:41:37,173 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 13:41:37,173 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 13:41:37,173 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 13:41:37,173 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 13:41:37,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 13:41:37,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 13:41:37,175 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 13:41:37,600 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 13:41:37,600 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 13:41:37,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:41:37 BoogieIcfgContainer [2020-10-16 13:41:37,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 13:41:37,604 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 13:41:37,604 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 13:41:37,608 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 13:41:37,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:41:36" (1/3) ... [2020-10-16 13:41:37,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d29ed4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:41:37, skipping insertion in model container [2020-10-16 13:41:37,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:37" (2/3) ... [2020-10-16 13:41:37,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d29ed4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:41:37, skipping insertion in model container [2020-10-16 13:41:37,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:41:37" (3/3) ... [2020-10-16 13:41:37,615 INFO L111 eAbstractionObserver]: Analyzing ICFG safe021_tso.oepc.i [2020-10-16 13:41:37,628 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 13:41:37,628 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 13:41:37,636 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 13:41:37,637 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 13:41:37,664 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:37,664 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:37,664 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:37,665 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:37,665 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:37,666 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:37,666 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:37,666 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:37,667 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:37,667 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:37,667 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:37,668 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:37,668 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:37,668 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:37,669 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:37,669 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:37,669 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:37,670 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:37,673 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:37,674 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:37,674 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:37,674 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:37,685 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:37,686 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:37,686 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:37,686 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:37,690 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:37,690 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:37,690 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:37,690 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:37,693 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 13:41:37,707 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 13:41:37,729 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 13:41:37,729 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 13:41:37,729 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 13:41:37,730 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 13:41:37,730 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 13:41:37,730 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 13:41:37,730 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 13:41:37,730 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 13:41:37,744 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 13:41:37,745 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 13:41:37,747 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 13:41:37,749 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 13:41:37,793 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 13:41:37,793 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 13:41:37,799 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 13:41:37,802 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-16 13:41:38,977 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-10-16 13:41:39,028 INFO L132 LiptonReduction]: Checked pairs total: 2334 [2020-10-16 13:41:39,029 INFO L134 LiptonReduction]: Total number of compositions: 56 [2020-10-16 13:41:39,036 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-10-16 13:41:39,070 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-10-16 13:41:39,072 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-10-16 13:41:39,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 13:41:39,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:41:39,082 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:41:39,083 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:41:39,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:41:39,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1626400852, now seen corresponding path program 1 times [2020-10-16 13:41:39,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:41:39,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080366707] [2020-10-16 13:41:39,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:41:39,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:41:39,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:41:39,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080366707] [2020-10-16 13:41:39,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:41:39,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:41:39,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1791291223] [2020-10-16 13:41:39,303 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:41:39,306 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:41:39,319 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-16 13:41:39,319 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:41:39,324 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:41:39,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 13:41:39,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:41:39,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 13:41:39,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 13:41:39,341 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-10-16 13:41:39,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:41:39,363 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-10-16 13:41:39,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 13:41:39,364 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-16 13:41:39,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:41:39,380 INFO L225 Difference]: With dead ends: 362 [2020-10-16 13:41:39,381 INFO L226 Difference]: Without dead ends: 298 [2020-10-16 13:41:39,383 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 [2020-10-16 13:41:39,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-16 13:41:39,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-10-16 13:41:39,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-16 13:41:39,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-10-16 13:41:39,501 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-10-16 13:41:39,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:41:39,502 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-10-16 13:41:39,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 13:41:39,503 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-10-16 13:41:39,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 13:41:39,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:41:39,505 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:41:39,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 13:41:39,508 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:41:39,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:41:39,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1121187596, now seen corresponding path program 1 times [2020-10-16 13:41:39,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:41:39,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361434637] [2020-10-16 13:41:39,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:41:39,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:41:39,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:41:39,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361434637] [2020-10-16 13:41:39,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:41:39,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:41:39,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [934639336] [2020-10-16 13:41:39,622 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:41:39,623 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:41:39,624 INFO L258 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-16 13:41:39,625 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:41:39,625 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:41:39,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:41:39,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:41:39,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:41:39,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:41:39,628 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-10-16 13:41:39,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:41:39,669 INFO L93 Difference]: Finished difference Result 346 states and 956 transitions. [2020-10-16 13:41:39,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:41:39,669 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-16 13:41:39,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:41:39,673 INFO L225 Difference]: With dead ends: 346 [2020-10-16 13:41:39,673 INFO L226 Difference]: Without dead ends: 282 [2020-10-16 13:41:39,674 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 [2020-10-16 13:41:39,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-16 13:41:39,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2020-10-16 13:41:39,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-10-16 13:41:39,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 804 transitions. [2020-10-16 13:41:39,693 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 804 transitions. Word has length 9 [2020-10-16 13:41:39,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:41:39,693 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 804 transitions. [2020-10-16 13:41:39,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:41:39,693 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 804 transitions. [2020-10-16 13:41:39,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 13:41:39,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:41:39,695 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:41:39,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 13:41:39,695 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:41:39,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:41:39,696 INFO L82 PathProgramCache]: Analyzing trace with hash -485254353, now seen corresponding path program 1 times [2020-10-16 13:41:39,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:41:39,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019944010] [2020-10-16 13:41:39,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:41:39,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:41:39,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:41:39,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019944010] [2020-10-16 13:41:39,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:41:39,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:41:39,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [180711413] [2020-10-16 13:41:39,766 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:41:39,767 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:41:39,769 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-10-16 13:41:39,769 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:41:39,799 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:41:39,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:41:39,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:41:39,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:41:39,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:41:39,801 INFO L87 Difference]: Start difference. First operand 282 states and 804 transitions. Second operand 4 states. [2020-10-16 13:41:39,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:41:39,825 INFO L93 Difference]: Finished difference Result 310 states and 844 transitions. [2020-10-16 13:41:39,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:41:39,825 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-16 13:41:39,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:41:39,828 INFO L225 Difference]: With dead ends: 310 [2020-10-16 13:41:39,828 INFO L226 Difference]: Without dead ends: 254 [2020-10-16 13:41:39,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:41:39,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-16 13:41:39,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2020-10-16 13:41:39,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-16 13:41:39,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 708 transitions. [2020-10-16 13:41:39,841 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 708 transitions. Word has length 10 [2020-10-16 13:41:39,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:41:39,841 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 708 transitions. [2020-10-16 13:41:39,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:41:39,841 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 708 transitions. [2020-10-16 13:41:39,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 13:41:39,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:41:39,843 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:41:39,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 13:41:39,844 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:41:39,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:41:39,844 INFO L82 PathProgramCache]: Analyzing trace with hash 2136362745, now seen corresponding path program 1 times [2020-10-16 13:41:39,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:41:39,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906508999] [2020-10-16 13:41:39,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:41:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:41:39,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:41:39,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906508999] [2020-10-16 13:41:39,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:41:39,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:41:39,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2139730129] [2020-10-16 13:41:39,912 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:41:39,914 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:41:39,915 INFO L258 McrAutomatonBuilder]: Finished intersection with 18 states and 24 transitions. [2020-10-16 13:41:39,916 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:41:39,949 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:41:39,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:41:39,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:41:39,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:41:39,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:41:39,951 INFO L87 Difference]: Start difference. First operand 254 states and 708 transitions. Second operand 5 states. [2020-10-16 13:41:39,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:41:40,000 INFO L93 Difference]: Finished difference Result 308 states and 834 transitions. [2020-10-16 13:41:40,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:41:40,000 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-16 13:41:40,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:41:40,002 INFO L225 Difference]: With dead ends: 308 [2020-10-16 13:41:40,002 INFO L226 Difference]: Without dead ends: 170 [2020-10-16 13:41:40,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-16 13:41:40,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-16 13:41:40,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-10-16 13:41:40,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-16 13:41:40,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 432 transitions. [2020-10-16 13:41:40,010 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 432 transitions. Word has length 11 [2020-10-16 13:41:40,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:41:40,010 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 432 transitions. [2020-10-16 13:41:40,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:41:40,011 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 432 transitions. [2020-10-16 13:41:40,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 13:41:40,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:41:40,012 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:41:40,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 13:41:40,012 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:41:40,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:41:40,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1820296279, now seen corresponding path program 1 times [2020-10-16 13:41:40,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:41:40,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493508916] [2020-10-16 13:41:40,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:41:40,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:41:40,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:41:40,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493508916] [2020-10-16 13:41:40,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:41:40,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:41:40,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2025484617] [2020-10-16 13:41:40,089 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:41:40,090 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:41:40,093 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-10-16 13:41:40,093 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:41:40,123 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:41:40,156 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:41:40,184 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:41:40,217 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4168#(not (= 3 ~__unbuffered_cnt~0))] [2020-10-16 13:41:40,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:41:40,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:41:40,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:41:40,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:41:40,219 INFO L87 Difference]: Start difference. First operand 170 states and 432 transitions. Second operand 5 states. [2020-10-16 13:41:40,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:41:40,300 INFO L93 Difference]: Finished difference Result 144 states and 325 transitions. [2020-10-16 13:41:40,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:41:40,301 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-16 13:41:40,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:41:40,302 INFO L225 Difference]: With dead ends: 144 [2020-10-16 13:41:40,302 INFO L226 Difference]: Without dead ends: 104 [2020-10-16 13:41:40,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:41:40,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-16 13:41:40,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-10-16 13:41:40,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-16 13:41:40,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 215 transitions. [2020-10-16 13:41:40,309 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 215 transitions. Word has length 12 [2020-10-16 13:41:40,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:41:40,309 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 215 transitions. [2020-10-16 13:41:40,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:41:40,309 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 215 transitions. [2020-10-16 13:41:40,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 13:41:40,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:41:40,310 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:41:40,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 13:41:40,311 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:41:40,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:41:40,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1420096236, now seen corresponding path program 1 times [2020-10-16 13:41:40,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:41:40,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132991039] [2020-10-16 13:41:40,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:41:40,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:41:40,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:41:40,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132991039] [2020-10-16 13:41:40,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:41:40,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 13:41:40,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1879063788] [2020-10-16 13:41:40,401 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:41:40,403 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:41:40,405 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 23 transitions. [2020-10-16 13:41:40,406 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:41:40,425 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:41:40,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 13:41:40,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:41:40,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 13:41:40,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 13:41:40,426 INFO L87 Difference]: Start difference. First operand 104 states and 215 transitions. Second operand 6 states. [2020-10-16 13:41:40,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:41:40,470 INFO L93 Difference]: Finished difference Result 93 states and 191 transitions. [2020-10-16 13:41:40,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:41:40,471 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-16 13:41:40,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:41:40,472 INFO L225 Difference]: With dead ends: 93 [2020-10-16 13:41:40,472 INFO L226 Difference]: Without dead ends: 85 [2020-10-16 13:41:40,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:41:40,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-16 13:41:40,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-10-16 13:41:40,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-16 13:41:40,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 177 transitions. [2020-10-16 13:41:40,475 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 177 transitions. Word has length 15 [2020-10-16 13:41:40,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:41:40,476 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 177 transitions. [2020-10-16 13:41:40,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 13:41:40,476 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 177 transitions. [2020-10-16 13:41:40,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-16 13:41:40,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:41:40,477 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:41:40,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 13:41:40,477 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:41:40,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:41:40,478 INFO L82 PathProgramCache]: Analyzing trace with hash -572692364, now seen corresponding path program 1 times [2020-10-16 13:41:40,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:41:40,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813121803] [2020-10-16 13:41:40,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:41:40,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:41:40,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:41:40,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813121803] [2020-10-16 13:41:40,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:41:40,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:41:40,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [499365775] [2020-10-16 13:41:40,561 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:41:40,578 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:41:40,583 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 34 transitions. [2020-10-16 13:41:40,584 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:41:40,589 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:41:40,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:41:40,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:41:40,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:41:40,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:41:40,590 INFO L87 Difference]: Start difference. First operand 85 states and 177 transitions. Second operand 4 states. [2020-10-16 13:41:40,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:41:40,607 INFO L93 Difference]: Finished difference Result 117 states and 236 transitions. [2020-10-16 13:41:40,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 13:41:40,608 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-16 13:41:40,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:41:40,608 INFO L225 Difference]: With dead ends: 117 [2020-10-16 13:41:40,609 INFO L226 Difference]: Without dead ends: 55 [2020-10-16 13:41:40,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:41:40,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-16 13:41:40,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-16 13:41:40,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-16 13:41:40,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 99 transitions. [2020-10-16 13:41:40,611 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 99 transitions. Word has length 18 [2020-10-16 13:41:40,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:41:40,612 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 99 transitions. [2020-10-16 13:41:40,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:41:40,612 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 99 transitions. [2020-10-16 13:41:40,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-16 13:41:40,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:41:40,613 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:41:40,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 13:41:40,614 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:41:40,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:41:40,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1123595488, now seen corresponding path program 2 times [2020-10-16 13:41:40,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:41:40,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732862508] [2020-10-16 13:41:40,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:41:40,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:41:40,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:41:40,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732862508] [2020-10-16 13:41:40,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:41:40,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 13:41:40,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1932992130] [2020-10-16 13:41:40,663 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:41:40,665 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:41:40,672 INFO L258 McrAutomatonBuilder]: Finished intersection with 58 states and 100 transitions. [2020-10-16 13:41:40,673 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:41:40,757 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:41:40,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:41:40,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:41:40,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:41:40,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:41:40,759 INFO L87 Difference]: Start difference. First operand 55 states and 99 transitions. Second operand 5 states. [2020-10-16 13:41:40,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:41:40,779 INFO L93 Difference]: Finished difference Result 54 states and 98 transitions. [2020-10-16 13:41:40,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:41:40,779 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-16 13:41:40,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:41:40,779 INFO L225 Difference]: With dead ends: 54 [2020-10-16 13:41:40,780 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 13:41:40,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:41:40,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 13:41:40,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 13:41:40,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 13:41:40,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 13:41:40,781 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-16 13:41:40,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:41:40,781 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 13:41:40,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:41:40,781 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 13:41:40,781 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 13:41:40,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 13:41:40,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:41:40 BasicIcfg [2020-10-16 13:41:40,785 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 13:41:40,788 INFO L168 Benchmark]: Toolchain (without parser) took 4428.45 ms. Allocated memory was 138.4 MB in the beginning and 249.6 MB in the end (delta: 111.1 MB). Free memory was 99.7 MB in the beginning and 172.2 MB in the end (delta: -72.4 MB). Peak memory consumption was 38.7 MB. Max. memory is 7.1 GB. [2020-10-16 13:41:40,788 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 13:41:40,789 INFO L168 Benchmark]: CACSL2BoogieTranslator took 659.47 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 99.5 MB in the beginning and 158.4 MB in the end (delta: -58.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2020-10-16 13:41:40,790 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.08 ms. Allocated memory is still 201.3 MB. Free memory was 158.4 MB in the beginning and 155.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-10-16 13:41:40,791 INFO L168 Benchmark]: Boogie Preprocessor took 27.79 ms. Allocated memory is still 201.3 MB. Free memory was 155.7 MB in the beginning and 154.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-16 13:41:40,792 INFO L168 Benchmark]: RCFGBuilder took 504.34 ms. Allocated memory is still 201.3 MB. Free memory was 154.4 MB in the beginning and 132.1 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-10-16 13:41:40,792 INFO L168 Benchmark]: TraceAbstraction took 3181.33 ms. Allocated memory was 201.3 MB in the beginning and 249.6 MB in the end (delta: 48.2 MB). Free memory was 131.5 MB in the beginning and 172.2 MB in the end (delta: -40.7 MB). Peak memory consumption was 7.5 MB. Max. memory is 7.1 GB. [2020-10-16 13:41:40,796 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 659.47 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 99.5 MB in the beginning and 158.4 MB in the end (delta: -58.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.08 ms. Allocated memory is still 201.3 MB. Free memory was 158.4 MB in the beginning and 155.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.79 ms. Allocated memory is still 201.3 MB. Free memory was 155.7 MB in the beginning and 154.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 504.34 ms. Allocated memory is still 201.3 MB. Free memory was 154.4 MB in the beginning and 132.1 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3181.33 ms. Allocated memory was 201.3 MB in the beginning and 249.6 MB in the end (delta: 48.2 MB). Free memory was 131.5 MB in the beginning and 172.2 MB in the end (delta: -40.7 MB). Peak memory consumption was 7.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 642 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 51 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.2s, 78 PlacesBefore, 32 PlacesAfterwards, 70 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 56 TotalNumberOfCompositions, 2334 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 181 SDtfs, 159 SDslu, 271 SDs, 0 SdLazy, 92 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 2834 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...