/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/safe026_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-12 00:00:35,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-12 00:00:35,914 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-12 00:00:35,956 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-12 00:00:35,957 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-12 00:00:35,964 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-12 00:00:35,968 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-12 00:00:35,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-12 00:00:35,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-12 00:00:35,977 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-12 00:00:35,978 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-12 00:00:35,979 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-12 00:00:35,979 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-12 00:00:35,982 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-12 00:00:35,985 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-12 00:00:35,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-12 00:00:35,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-12 00:00:35,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-12 00:00:35,990 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-12 00:00:35,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-12 00:00:36,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-12 00:00:36,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-12 00:00:36,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-12 00:00:36,004 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-12 00:00:36,016 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-12 00:00:36,025 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-12 00:00:36,025 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-12 00:00:36,029 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-12 00:00:36,030 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-12 00:00:36,031 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-12 00:00:36,031 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-12 00:00:36,032 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-12 00:00:36,033 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-12 00:00:36,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-12 00:00:36,034 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-12 00:00:36,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-12 00:00:36,037 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-12 00:00:36,066 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-12 00:00:36,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-12 00:00:36,067 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-12 00:00:36,068 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-12 00:00:36,068 INFO L138 SettingsManager]: * Use SBE=true [2020-09-12 00:00:36,068 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-12 00:00:36,068 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-12 00:00:36,068 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-12 00:00:36,069 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-12 00:00:36,069 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-12 00:00:36,069 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-12 00:00:36,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-12 00:00:36,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-12 00:00:36,070 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-12 00:00:36,070 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-12 00:00:36,070 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-12 00:00:36,070 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-12 00:00:36,071 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-12 00:00:36,071 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-12 00:00:36,071 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-12 00:00:36,071 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-12 00:00:36,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-12 00:00:36,072 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-12 00:00:36,072 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-12 00:00:36,072 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-12 00:00:36,072 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-12 00:00:36,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-12 00:00:36,073 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-12 00:00:36,073 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-12 00:00:36,073 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-12 00:00:36,073 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-12 00:00:36,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-12 00:00:36,533 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-12 00:00:36,537 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-12 00:00:36,539 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-12 00:00:36,540 INFO L275 PluginConnector]: CDTParser initialized [2020-09-12 00:00:36,541 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i [2020-09-12 00:00:36,637 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5c483a16/9c6c63bc46a4436facc7f526ef63dde4/FLAGe97361079 [2020-09-12 00:00:37,265 INFO L306 CDTParser]: Found 1 translation units. [2020-09-12 00:00:37,266 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i [2020-09-12 00:00:37,286 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5c483a16/9c6c63bc46a4436facc7f526ef63dde4/FLAGe97361079 [2020-09-12 00:00:37,530 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5c483a16/9c6c63bc46a4436facc7f526ef63dde4 [2020-09-12 00:00:37,542 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-12 00:00:37,548 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-12 00:00:37,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-12 00:00:37,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-12 00:00:37,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-12 00:00:37,555 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 12:00:37" (1/1) ... [2020-09-12 00:00:37,559 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42178c85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:00:37, skipping insertion in model container [2020-09-12 00:00:37,559 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 12:00:37" (1/1) ... [2020-09-12 00:00:37,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-12 00:00:37,644 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-12 00:00:38,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-12 00:00:38,194 INFO L203 MainTranslator]: Completed pre-run [2020-09-12 00:00:38,269 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-12 00:00:38,351 INFO L208 MainTranslator]: Completed translation [2020-09-12 00:00:38,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:00:38 WrapperNode [2020-09-12 00:00:38,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-12 00:00:38,353 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-12 00:00:38,353 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-12 00:00:38,353 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-12 00:00:38,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:00:38" (1/1) ... [2020-09-12 00:00:38,384 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:00:38" (1/1) ... [2020-09-12 00:00:38,413 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-12 00:00:38,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-12 00:00:38,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-12 00:00:38,414 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-12 00:00:38,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:00:38" (1/1) ... [2020-09-12 00:00:38,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:00:38" (1/1) ... [2020-09-12 00:00:38,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:00:38" (1/1) ... [2020-09-12 00:00:38,428 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:00:38" (1/1) ... [2020-09-12 00:00:38,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:00:38" (1/1) ... [2020-09-12 00:00:38,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:00:38" (1/1) ... [2020-09-12 00:00:38,440 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:00:38" (1/1) ... [2020-09-12 00:00:38,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-12 00:00:38,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-12 00:00:38,445 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-12 00:00:38,445 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-12 00:00:38,446 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:00:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-12 00:00:38,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-12 00:00:38,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-12 00:00:38,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-12 00:00:38,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-12 00:00:38,533 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-12 00:00:38,533 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-12 00:00:38,534 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-12 00:00:38,534 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-12 00:00:38,534 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-12 00:00:38,534 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-12 00:00:38,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-12 00:00:38,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-12 00:00:38,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-12 00:00:38,537 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-12 00:00:38,940 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-12 00:00:38,941 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-12 00:00:38,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 12:00:38 BoogieIcfgContainer [2020-09-12 00:00:38,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-12 00:00:38,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-12 00:00:38,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-12 00:00:38,952 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-12 00:00:38,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 12:00:37" (1/3) ... [2020-09-12 00:00:38,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74320906 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 12:00:38, skipping insertion in model container [2020-09-12 00:00:38,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:00:38" (2/3) ... [2020-09-12 00:00:38,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74320906 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 12:00:38, skipping insertion in model container [2020-09-12 00:00:38,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 12:00:38" (3/3) ... [2020-09-12 00:00:38,957 INFO L109 eAbstractionObserver]: Analyzing ICFG safe026_tso.oepc.i [2020-09-12 00:00:38,968 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-12 00:00:38,969 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-12 00:00:38,980 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-12 00:00:38,981 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-12 00:00:39,012 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:39,013 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:39,013 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:39,013 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:39,014 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:39,014 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:39,014 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:39,015 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:39,015 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:39,015 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:39,016 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:39,016 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:39,016 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:39,016 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:39,017 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:39,017 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:39,017 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:39,018 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:39,022 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:39,023 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:39,023 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:39,023 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:39,034 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:39,034 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:39,035 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:39,035 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:39,038 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:39,039 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:39,039 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:39,039 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:39,064 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-12 00:00:39,087 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-12 00:00:39,088 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-12 00:00:39,088 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-12 00:00:39,088 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-12 00:00:39,088 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-12 00:00:39,088 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-12 00:00:39,089 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-12 00:00:39,089 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-12 00:00:39,106 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-09-12 00:00:39,108 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-09-12 00:00:39,153 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-09-12 00:00:39,154 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-12 00:00:39,160 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-09-12 00:00:39,163 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-09-12 00:00:39,184 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-09-12 00:00:39,184 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-12 00:00:39,185 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-09-12 00:00:39,187 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-09-12 00:00:39,188 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-12 00:00:40,523 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-09-12 00:00:40,645 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2133 [2020-09-12 00:00:40,645 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-09-12 00:00:40,650 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-09-12 00:00:40,674 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-09-12 00:00:40,677 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-09-12 00:00:40,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-12 00:00:40,686 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:00:40,688 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:00:40,688 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:00:40,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:00:40,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1225676630, now seen corresponding path program 1 times [2020-09-12 00:00:40,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:00:40,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653480744] [2020-09-12 00:00:40,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:00:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:00:40,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:00:40,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653480744] [2020-09-12 00:00:40,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:00:40,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-12 00:00:40,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1865483374] [2020-09-12 00:00:40,987 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:00:40,992 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:00:41,012 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-12 00:00:41,013 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:00:41,015 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:00:41,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-12 00:00:41,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:00:41,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-12 00:00:41,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:00:41,038 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-09-12 00:00:41,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:00:41,082 INFO L93 Difference]: Finished difference Result 218 states and 604 transitions. [2020-09-12 00:00:41,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-12 00:00:41,084 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-12 00:00:41,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:00:41,102 INFO L225 Difference]: With dead ends: 218 [2020-09-12 00:00:41,103 INFO L226 Difference]: Without dead ends: 170 [2020-09-12 00:00:41,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:00:41,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-09-12 00:00:41,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-09-12 00:00:41,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-09-12 00:00:41,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 452 transitions. [2020-09-12 00:00:41,175 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 452 transitions. Word has length 8 [2020-09-12 00:00:41,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:00:41,176 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 452 transitions. [2020-09-12 00:00:41,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-12 00:00:41,177 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 452 transitions. [2020-09-12 00:00:41,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-12 00:00:41,178 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:00:41,178 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:00:41,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-12 00:00:41,179 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:00:41,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:00:41,180 INFO L82 PathProgramCache]: Analyzing trace with hash 658729482, now seen corresponding path program 1 times [2020-09-12 00:00:41,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:00:41,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258859878] [2020-09-12 00:00:41,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:00:41,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:00:41,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:00:41,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258859878] [2020-09-12 00:00:41,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:00:41,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-12 00:00:41,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1431234340] [2020-09-12 00:00:41,267 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:00:41,268 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:00:41,270 INFO L274 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-09-12 00:00:41,271 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:00:41,304 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:00:41,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-12 00:00:41,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:00:41,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-12 00:00:41,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:00:41,306 INFO L87 Difference]: Start difference. First operand 170 states and 452 transitions. Second operand 3 states. [2020-09-12 00:00:41,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:00:41,318 INFO L93 Difference]: Finished difference Result 160 states and 419 transitions. [2020-09-12 00:00:41,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-12 00:00:41,319 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-12 00:00:41,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:00:41,321 INFO L225 Difference]: With dead ends: 160 [2020-09-12 00:00:41,321 INFO L226 Difference]: Without dead ends: 160 [2020-09-12 00:00:41,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:00:41,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-09-12 00:00:41,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2020-09-12 00:00:41,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-09-12 00:00:41,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 419 transitions. [2020-09-12 00:00:41,341 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 419 transitions. Word has length 9 [2020-09-12 00:00:41,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:00:41,342 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 419 transitions. [2020-09-12 00:00:41,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-12 00:00:41,342 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 419 transitions. [2020-09-12 00:00:41,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-12 00:00:41,343 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:00:41,344 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:00:41,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-12 00:00:41,344 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:00:41,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:00:41,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1054810361, now seen corresponding path program 1 times [2020-09-12 00:00:41,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:00:41,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551490426] [2020-09-12 00:00:41,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:00:41,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:00:41,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:00:41,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551490426] [2020-09-12 00:00:41,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:00:41,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-12 00:00:41,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1174455931] [2020-09-12 00:00:41,448 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:00:41,449 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:00:41,451 INFO L274 McrAutomatonBuilder]: Finished intersection with 13 states and 14 transitions. [2020-09-12 00:00:41,452 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:00:41,461 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:00:41,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-12 00:00:41,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:00:41,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-12 00:00:41,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-12 00:00:41,463 INFO L87 Difference]: Start difference. First operand 160 states and 419 transitions. Second operand 4 states. [2020-09-12 00:00:41,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:00:41,490 INFO L93 Difference]: Finished difference Result 220 states and 567 transitions. [2020-09-12 00:00:41,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-12 00:00:41,491 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-09-12 00:00:41,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:00:41,493 INFO L225 Difference]: With dead ends: 220 [2020-09-12 00:00:41,493 INFO L226 Difference]: Without dead ends: 148 [2020-09-12 00:00:41,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:00:41,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-09-12 00:00:41,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2020-09-12 00:00:41,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-09-12 00:00:41,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 377 transitions. [2020-09-12 00:00:41,509 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 377 transitions. Word has length 10 [2020-09-12 00:00:41,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:00:41,509 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 377 transitions. [2020-09-12 00:00:41,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-12 00:00:41,509 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 377 transitions. [2020-09-12 00:00:41,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-12 00:00:41,511 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:00:41,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:00:41,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-12 00:00:41,511 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:00:41,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:00:41,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1054223531, now seen corresponding path program 2 times [2020-09-12 00:00:41,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:00:41,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410188525] [2020-09-12 00:00:41,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:00:41,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:00:41,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:00:41,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410188525] [2020-09-12 00:00:41,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:00:41,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-12 00:00:41,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1895208203] [2020-09-12 00:00:41,653 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:00:41,654 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:00:41,656 INFO L274 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2020-09-12 00:00:41,656 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:00:41,684 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-12 00:00:41,717 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-12 00:00:41,732 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2101#(not (= 3 ~__unbuffered_cnt~0))] [2020-09-12 00:00:41,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-12 00:00:41,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:00:41,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-12 00:00:41,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:00:41,734 INFO L87 Difference]: Start difference. First operand 148 states and 377 transitions. Second operand 5 states. [2020-09-12 00:00:41,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:00:41,798 INFO L93 Difference]: Finished difference Result 135 states and 311 transitions. [2020-09-12 00:00:41,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-12 00:00:41,798 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-09-12 00:00:41,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:00:41,800 INFO L225 Difference]: With dead ends: 135 [2020-09-12 00:00:41,800 INFO L226 Difference]: Without dead ends: 93 [2020-09-12 00:00:41,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-12 00:00:41,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-09-12 00:00:41,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-09-12 00:00:41,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-12 00:00:41,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 192 transitions. [2020-09-12 00:00:41,808 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 192 transitions. Word has length 10 [2020-09-12 00:00:41,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:00:41,808 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 192 transitions. [2020-09-12 00:00:41,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-12 00:00:41,808 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 192 transitions. [2020-09-12 00:00:41,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-12 00:00:41,809 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:00:41,810 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:00:41,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-12 00:00:41,810 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:00:41,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:00:41,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1269858217, now seen corresponding path program 1 times [2020-09-12 00:00:41,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:00:41,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664675568] [2020-09-12 00:00:41,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:00:41,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:00:41,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:00:41,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664675568] [2020-09-12 00:00:41,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:00:41,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-12 00:00:41,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [758651256] [2020-09-12 00:00:41,953 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:00:41,954 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:00:41,957 INFO L274 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-09-12 00:00:41,957 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:00:42,008 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2433#(<= ~__unbuffered_cnt~0 0)] [2020-09-12 00:00:42,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-12 00:00:42,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:00:42,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-12 00:00:42,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-12 00:00:42,010 INFO L87 Difference]: Start difference. First operand 93 states and 192 transitions. Second operand 7 states. [2020-09-12 00:00:42,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:00:42,094 INFO L93 Difference]: Finished difference Result 87 states and 178 transitions. [2020-09-12 00:00:42,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-12 00:00:42,097 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-09-12 00:00:42,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:00:42,097 INFO L225 Difference]: With dead ends: 87 [2020-09-12 00:00:42,098 INFO L226 Difference]: Without dead ends: 78 [2020-09-12 00:00:42,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-12 00:00:42,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-12 00:00:42,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-09-12 00:00:42,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-12 00:00:42,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 162 transitions. [2020-09-12 00:00:42,109 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 162 transitions. Word has length 13 [2020-09-12 00:00:42,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:00:42,109 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 162 transitions. [2020-09-12 00:00:42,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-12 00:00:42,109 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 162 transitions. [2020-09-12 00:00:42,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-12 00:00:42,110 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:00:42,111 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:00:42,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-12 00:00:42,111 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:00:42,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:00:42,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1906464189, now seen corresponding path program 1 times [2020-09-12 00:00:42,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:00:42,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244388478] [2020-09-12 00:00:42,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:00:42,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:00:42,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:00:42,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244388478] [2020-09-12 00:00:42,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:00:42,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-12 00:00:42,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [599715529] [2020-09-12 00:00:42,201 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:00:42,202 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:00:42,208 INFO L274 McrAutomatonBuilder]: Finished intersection with 41 states and 66 transitions. [2020-09-12 00:00:42,208 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:00:42,291 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:00:42,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-12 00:00:42,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:00:42,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-12 00:00:42,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-12 00:00:42,294 INFO L87 Difference]: Start difference. First operand 78 states and 162 transitions. Second operand 4 states. [2020-09-12 00:00:42,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:00:42,310 INFO L93 Difference]: Finished difference Result 91 states and 183 transitions. [2020-09-12 00:00:42,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-12 00:00:42,311 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-09-12 00:00:42,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:00:42,311 INFO L225 Difference]: With dead ends: 91 [2020-09-12 00:00:42,311 INFO L226 Difference]: Without dead ends: 33 [2020-09-12 00:00:42,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:00:42,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-12 00:00:42,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-09-12 00:00:42,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-12 00:00:42,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 51 transitions. [2020-09-12 00:00:42,315 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 51 transitions. Word has length 16 [2020-09-12 00:00:42,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:00:42,315 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 51 transitions. [2020-09-12 00:00:42,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-12 00:00:42,315 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2020-09-12 00:00:42,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-12 00:00:42,316 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:00:42,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:00:42,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-12 00:00:42,317 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:00:42,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:00:42,317 INFO L82 PathProgramCache]: Analyzing trace with hash -867586631, now seen corresponding path program 2 times [2020-09-12 00:00:42,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:00:42,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486961362] [2020-09-12 00:00:42,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:00:42,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:00:42,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:00:42,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486961362] [2020-09-12 00:00:42,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:00:42,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-12 00:00:42,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1406068853] [2020-09-12 00:00:42,410 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:00:42,412 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:00:42,416 INFO L274 McrAutomatonBuilder]: Finished intersection with 25 states and 32 transitions. [2020-09-12 00:00:42,417 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:00:42,421 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:00:42,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-12 00:00:42,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:00:42,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-12 00:00:42,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:00:42,422 INFO L87 Difference]: Start difference. First operand 33 states and 51 transitions. Second operand 3 states. [2020-09-12 00:00:42,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:00:42,428 INFO L93 Difference]: Finished difference Result 32 states and 50 transitions. [2020-09-12 00:00:42,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-12 00:00:42,429 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-09-12 00:00:42,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:00:42,429 INFO L225 Difference]: With dead ends: 32 [2020-09-12 00:00:42,430 INFO L226 Difference]: Without dead ends: 0 [2020-09-12 00:00:42,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:00:42,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-12 00:00:42,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-12 00:00:42,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-12 00:00:42,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-12 00:00:42,431 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-09-12 00:00:42,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:00:42,431 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-12 00:00:42,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-12 00:00:42,435 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-12 00:00:42,435 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-12 00:00:42,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-12 00:00:42,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.09 12:00:42 BasicIcfg [2020-09-12 00:00:42,443 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-12 00:00:42,447 INFO L168 Benchmark]: Toolchain (without parser) took 4901.04 ms. Allocated memory was 143.7 MB in the beginning and 246.4 MB in the end (delta: 102.8 MB). Free memory was 102.7 MB in the beginning and 167.3 MB in the end (delta: -64.6 MB). Peak memory consumption was 38.2 MB. Max. memory is 7.1 GB. [2020-09-12 00:00:42,451 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 143.7 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-09-12 00:00:42,453 INFO L168 Benchmark]: CACSL2BoogieTranslator took 803.09 ms. Allocated memory was 143.7 MB in the beginning and 204.5 MB in the end (delta: 60.8 MB). Free memory was 102.0 MB in the beginning and 159.5 MB in the end (delta: -57.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. [2020-09-12 00:00:42,453 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.60 ms. Allocated memory is still 204.5 MB. Free memory was 159.5 MB in the beginning and 157.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-12 00:00:42,455 INFO L168 Benchmark]: Boogie Preprocessor took 30.71 ms. Allocated memory is still 204.5 MB. Free memory was 157.5 MB in the beginning and 155.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-12 00:00:42,455 INFO L168 Benchmark]: RCFGBuilder took 502.48 ms. Allocated memory is still 204.5 MB. Free memory was 155.6 MB in the beginning and 134.2 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2020-09-12 00:00:42,459 INFO L168 Benchmark]: TraceAbstraction took 3494.86 ms. Allocated memory was 204.5 MB in the beginning and 246.4 MB in the end (delta: 41.9 MB). Free memory was 133.5 MB in the beginning and 167.3 MB in the end (delta: -33.8 MB). Peak memory consumption was 8.2 MB. Max. memory is 7.1 GB. [2020-09-12 00:00:42,467 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 143.7 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 803.09 ms. Allocated memory was 143.7 MB in the beginning and 204.5 MB in the end (delta: 60.8 MB). Free memory was 102.0 MB in the beginning and 159.5 MB in the end (delta: -57.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 60.60 ms. Allocated memory is still 204.5 MB. Free memory was 159.5 MB in the beginning and 157.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.71 ms. Allocated memory is still 204.5 MB. Free memory was 157.5 MB in the beginning and 155.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 502.48 ms. Allocated memory is still 204.5 MB. Free memory was 155.6 MB in the beginning and 134.2 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3494.86 ms. Allocated memory was 204.5 MB in the beginning and 246.4 MB in the end (delta: 41.9 MB). Free memory was 133.5 MB in the beginning and 167.3 MB in the end (delta: -33.8 MB). Peak memory consumption was 8.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 76 ProgramPointsBefore, 30 ProgramPointsAfterwards, 68 TransitionsBefore, 20 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 583 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2133 CheckedPairsTotal, 57 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.3s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 125 SDtfs, 103 SDslu, 154 SDs, 0 SdLazy, 84 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 2373 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...