/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/safe031_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-16 00:53:01,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-16 00:53:01,037 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-16 00:53:01,078 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-16 00:53:01,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-16 00:53:01,087 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-16 00:53:01,090 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-16 00:53:01,094 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-16 00:53:01,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-16 00:53:01,099 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-16 00:53:01,100 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-16 00:53:01,101 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-16 00:53:01,101 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-16 00:53:01,103 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-16 00:53:01,106 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-16 00:53:01,107 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-16 00:53:01,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-16 00:53:01,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-16 00:53:01,112 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-16 00:53:01,120 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-16 00:53:01,122 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-16 00:53:01,123 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-16 00:53:01,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-16 00:53:01,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-16 00:53:01,136 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-16 00:53:01,137 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-16 00:53:01,137 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-16 00:53:01,143 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-16 00:53:01,144 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-16 00:53:01,144 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-16 00:53:01,145 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-16 00:53:01,145 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-16 00:53:01,149 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-16 00:53:01,150 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-16 00:53:01,151 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-16 00:53:01,151 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-16 00:53:01,154 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-16 00:53:01,154 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-16 00:53:01,154 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-16 00:53:01,155 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-16 00:53:01,157 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-16 00:53:01,158 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 [2020-09-16 00:53:01,189 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-16 00:53:01,189 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-16 00:53:01,190 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-16 00:53:01,191 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-16 00:53:01,191 INFO L138 SettingsManager]: * Use SBE=true [2020-09-16 00:53:01,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-16 00:53:01,191 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-16 00:53:01,192 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-16 00:53:01,192 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-16 00:53:01,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-16 00:53:01,192 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-16 00:53:01,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-16 00:53:01,192 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-16 00:53:01,193 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-16 00:53:01,193 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-16 00:53:01,193 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-16 00:53:01,193 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-16 00:53:01,194 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-16 00:53:01,194 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-16 00:53:01,194 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-16 00:53:01,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-16 00:53:01,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-16 00:53:01,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-16 00:53:01,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-16 00:53:01,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-16 00:53:01,195 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-16 00:53:01,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-16 00:53:01,195 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-16 00:53:01,196 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-16 00:53:01,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-16 00:53:01,196 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-16 00:53:01,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-16 00:53:01,643 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-16 00:53:01,649 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-16 00:53:01,651 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-16 00:53:01,652 INFO L275 PluginConnector]: CDTParser initialized [2020-09-16 00:53:01,654 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.oepc.i [2020-09-16 00:53:01,740 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/838193090/e27115117fb84dc4929f6d1517ad4411/FLAGe659a66f5 [2020-09-16 00:53:02,355 INFO L306 CDTParser]: Found 1 translation units. [2020-09-16 00:53:02,356 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe031_tso.oepc.i [2020-09-16 00:53:02,379 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/838193090/e27115117fb84dc4929f6d1517ad4411/FLAGe659a66f5 [2020-09-16 00:53:02,603 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/838193090/e27115117fb84dc4929f6d1517ad4411 [2020-09-16 00:53:02,614 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-16 00:53:02,620 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-16 00:53:02,622 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-16 00:53:02,622 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-16 00:53:02,626 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-16 00:53:02,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 12:53:02" (1/1) ... [2020-09-16 00:53:02,631 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14382dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:53:02, skipping insertion in model container [2020-09-16 00:53:02,631 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 12:53:02" (1/1) ... [2020-09-16 00:53:02,640 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-16 00:53:02,693 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-16 00:53:03,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 00:53:03,224 INFO L203 MainTranslator]: Completed pre-run [2020-09-16 00:53:03,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 00:53:03,379 INFO L208 MainTranslator]: Completed translation [2020-09-16 00:53:03,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:53:03 WrapperNode [2020-09-16 00:53:03,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-16 00:53:03,382 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-16 00:53:03,382 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-16 00:53:03,382 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-16 00:53:03,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:53:03" (1/1) ... [2020-09-16 00:53:03,418 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:53:03" (1/1) ... [2020-09-16 00:53:03,442 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-16 00:53:03,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-16 00:53:03,443 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-16 00:53:03,443 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-16 00:53:03,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:53:03" (1/1) ... [2020-09-16 00:53:03,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:53:03" (1/1) ... [2020-09-16 00:53:03,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:53:03" (1/1) ... [2020-09-16 00:53:03,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:53:03" (1/1) ... [2020-09-16 00:53:03,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:53:03" (1/1) ... [2020-09-16 00:53:03,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:53:03" (1/1) ... [2020-09-16 00:53:03,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:53:03" (1/1) ... [2020-09-16 00:53:03,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-16 00:53:03,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-16 00:53:03,473 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-16 00:53:03,473 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-16 00:53:03,474 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:53:03" (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 [2020-09-16 00:53:03,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-16 00:53:03,555 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-16 00:53:03,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-16 00:53:03,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-16 00:53:03,556 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-16 00:53:03,556 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-16 00:53:03,557 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-16 00:53:03,558 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-16 00:53:03,558 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-16 00:53:03,558 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-16 00:53:03,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-16 00:53:03,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-16 00:53:03,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-16 00:53:03,562 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-16 00:53:03,994 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-16 00:53:03,995 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-16 00:53:04,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 12:53:04 BoogieIcfgContainer [2020-09-16 00:53:04,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-16 00:53:04,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-16 00:53:04,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-16 00:53:04,006 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-16 00:53:04,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 12:53:02" (1/3) ... [2020-09-16 00:53:04,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bbf15d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 12:53:04, skipping insertion in model container [2020-09-16 00:53:04,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:53:03" (2/3) ... [2020-09-16 00:53:04,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bbf15d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 12:53:04, skipping insertion in model container [2020-09-16 00:53:04,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 12:53:04" (3/3) ... [2020-09-16 00:53:04,010 INFO L109 eAbstractionObserver]: Analyzing ICFG safe031_tso.oepc.i [2020-09-16 00:53:04,023 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-16 00:53:04,023 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-16 00:53:04,034 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-16 00:53:04,035 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-16 00:53:04,065 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:53:04,065 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:53:04,066 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:53:04,066 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:53:04,066 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:53:04,067 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:53:04,067 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:53:04,067 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:53:04,068 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:53:04,068 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:53:04,068 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:53:04,069 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:53:04,069 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:53:04,069 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:53:04,070 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:53:04,070 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:53:04,070 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:53:04,070 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:53:04,075 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:53:04,076 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:53:04,076 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:53:04,076 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:53:04,087 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:53:04,087 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:53:04,088 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:53:04,088 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:53:04,091 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:53:04,092 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:53:04,092 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:53:04,092 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:53:04,126 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-16 00:53:04,149 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-16 00:53:04,149 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-16 00:53:04,149 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-16 00:53:04,149 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-16 00:53:04,150 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-16 00:53:04,150 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-16 00:53:04,150 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-16 00:53:04,150 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-16 00:53:04,168 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-09-16 00:53:04,171 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-16 00:53:04,221 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-16 00:53:04,222 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 00:53:04,228 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-16 00:53:04,231 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-16 00:53:04,252 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-16 00:53:04,252 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 00:53:04,253 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-16 00:53:04,255 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-16 00:53:04,257 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-16 00:53:05,660 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2238 [2020-09-16 00:53:05,660 INFO L214 etLargeBlockEncoding]: Total number of compositions: 55 [2020-09-16 00:53:05,665 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-09-16 00:53:05,692 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-16 00:53:05,695 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-16 00:53:05,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-16 00:53:05,704 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:53:05,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:53:05,706 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:53:05,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:53:05,713 INFO L82 PathProgramCache]: Analyzing trace with hash -389059823, now seen corresponding path program 1 times [2020-09-16 00:53:05,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:53:05,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929026237] [2020-09-16 00:53:05,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:53:05,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:53:05,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:53:05,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929026237] [2020-09-16 00:53:05,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:53:05,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-16 00:53:05,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1877300466] [2020-09-16 00:53:05,994 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:53:05,997 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:53:06,011 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-16 00:53:06,012 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:53:06,014 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:53:06,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 00:53:06,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:53:06,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 00:53:06,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 00:53:06,034 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-16 00:53:06,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:53:06,079 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-09-16 00:53:06,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 00:53:06,081 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-16 00:53:06,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:53:06,099 INFO L225 Difference]: With dead ends: 290 [2020-09-16 00:53:06,100 INFO L226 Difference]: Without dead ends: 226 [2020-09-16 00:53:06,101 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 [2020-09-16 00:53:06,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-09-16 00:53:06,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-09-16 00:53:06,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-16 00:53:06,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-09-16 00:53:06,178 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-09-16 00:53:06,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:53:06,180 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-09-16 00:53:06,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 00:53:06,180 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-09-16 00:53:06,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-16 00:53:06,182 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:53:06,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:53:06,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-16 00:53:06,182 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:53:06,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:53:06,183 INFO L82 PathProgramCache]: Analyzing trace with hash 824029864, now seen corresponding path program 1 times [2020-09-16 00:53:06,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:53:06,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112989594] [2020-09-16 00:53:06,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:53:06,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:53:06,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:53:06,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112989594] [2020-09-16 00:53:06,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:53:06,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-16 00:53:06,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1397589527] [2020-09-16 00:53:06,272 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:53:06,273 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:53:06,275 INFO L274 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-09-16 00:53:06,275 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:53:06,282 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:53:06,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 00:53:06,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:53:06,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 00:53:06,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 00:53:06,285 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-09-16 00:53:06,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:53:06,300 INFO L93 Difference]: Finished difference Result 220 states and 604 transitions. [2020-09-16 00:53:06,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 00:53:06,300 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-16 00:53:06,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:53:06,303 INFO L225 Difference]: With dead ends: 220 [2020-09-16 00:53:06,303 INFO L226 Difference]: Without dead ends: 220 [2020-09-16 00:53:06,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 00:53:06,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-09-16 00:53:06,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2020-09-16 00:53:06,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-09-16 00:53:06,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 604 transitions. [2020-09-16 00:53:06,328 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 604 transitions. Word has length 9 [2020-09-16 00:53:06,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:53:06,328 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 604 transitions. [2020-09-16 00:53:06,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 00:53:06,329 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 604 transitions. [2020-09-16 00:53:06,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-16 00:53:06,330 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:53:06,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:53:06,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-16 00:53:06,331 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:53:06,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:53:06,331 INFO L82 PathProgramCache]: Analyzing trace with hash -224925294, now seen corresponding path program 1 times [2020-09-16 00:53:06,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:53:06,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558946126] [2020-09-16 00:53:06,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:53:06,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:53:06,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:53:06,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558946126] [2020-09-16 00:53:06,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:53:06,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 00:53:06,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1741955732] [2020-09-16 00:53:06,450 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:53:06,451 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:53:06,455 INFO L274 McrAutomatonBuilder]: Finished intersection with 19 states and 27 transitions. [2020-09-16 00:53:06,455 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:53:06,514 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-16 00:53:06,557 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:53:06,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 00:53:06,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:53:06,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 00:53:06,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 00:53:06,558 INFO L87 Difference]: Start difference. First operand 220 states and 604 transitions. Second operand 4 states. [2020-09-16 00:53:06,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:53:06,610 INFO L93 Difference]: Finished difference Result 240 states and 599 transitions. [2020-09-16 00:53:06,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 00:53:06,611 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-09-16 00:53:06,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:53:06,613 INFO L225 Difference]: With dead ends: 240 [2020-09-16 00:53:06,613 INFO L226 Difference]: Without dead ends: 176 [2020-09-16 00:53:06,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-16 00:53:06,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-09-16 00:53:06,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2020-09-16 00:53:06,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-09-16 00:53:06,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 428 transitions. [2020-09-16 00:53:06,627 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 428 transitions. Word has length 10 [2020-09-16 00:53:06,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:53:06,628 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 428 transitions. [2020-09-16 00:53:06,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 00:53:06,628 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 428 transitions. [2020-09-16 00:53:06,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-16 00:53:06,629 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:53:06,629 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:53:06,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-16 00:53:06,630 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:53:06,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:53:06,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1617246421, now seen corresponding path program 1 times [2020-09-16 00:53:06,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:53:06,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919836391] [2020-09-16 00:53:06,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:53:06,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:53:06,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:53:06,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919836391] [2020-09-16 00:53:06,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:53:06,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 00:53:06,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [567884427] [2020-09-16 00:53:06,696 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:53:06,697 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:53:06,698 INFO L274 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-09-16 00:53:06,698 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:53:06,699 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:53:06,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 00:53:06,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:53:06,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 00:53:06,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 00:53:06,700 INFO L87 Difference]: Start difference. First operand 176 states and 428 transitions. Second operand 3 states. [2020-09-16 00:53:06,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:53:06,711 INFO L93 Difference]: Finished difference Result 225 states and 522 transitions. [2020-09-16 00:53:06,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 00:53:06,711 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-16 00:53:06,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:53:06,713 INFO L225 Difference]: With dead ends: 225 [2020-09-16 00:53:06,713 INFO L226 Difference]: Without dead ends: 183 [2020-09-16 00:53:06,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 00:53:06,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-09-16 00:53:06,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 171. [2020-09-16 00:53:06,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-09-16 00:53:06,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 396 transitions. [2020-09-16 00:53:06,725 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 396 transitions. Word has length 11 [2020-09-16 00:53:06,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:53:06,725 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 396 transitions. [2020-09-16 00:53:06,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 00:53:06,726 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 396 transitions. [2020-09-16 00:53:06,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-16 00:53:06,727 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:53:06,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:53:06,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-16 00:53:06,728 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:53:06,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:53:06,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1444727206, now seen corresponding path program 1 times [2020-09-16 00:53:06,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:53:06,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013516380] [2020-09-16 00:53:06,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:53:06,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:53:06,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:53:06,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013516380] [2020-09-16 00:53:06,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:53:06,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 00:53:06,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1164757053] [2020-09-16 00:53:06,837 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:53:06,838 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:53:06,841 INFO L274 McrAutomatonBuilder]: Finished intersection with 29 states and 44 transitions. [2020-09-16 00:53:06,841 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:53:06,953 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3257#(<= ~__unbuffered_cnt~0 0)] [2020-09-16 00:53:06,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-16 00:53:06,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:53:06,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-16 00:53:06,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-16 00:53:06,955 INFO L87 Difference]: Start difference. First operand 171 states and 396 transitions. Second operand 6 states. [2020-09-16 00:53:07,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:53:07,007 INFO L93 Difference]: Finished difference Result 162 states and 347 transitions. [2020-09-16 00:53:07,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-16 00:53:07,008 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-09-16 00:53:07,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:53:07,009 INFO L225 Difference]: With dead ends: 162 [2020-09-16 00:53:07,009 INFO L226 Difference]: Without dead ends: 125 [2020-09-16 00:53:07,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-16 00:53:07,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-09-16 00:53:07,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-09-16 00:53:07,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-16 00:53:07,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 263 transitions. [2020-09-16 00:53:07,016 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 263 transitions. Word has length 12 [2020-09-16 00:53:07,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:53:07,016 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 263 transitions. [2020-09-16 00:53:07,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-16 00:53:07,017 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 263 transitions. [2020-09-16 00:53:07,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-16 00:53:07,018 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:53:07,018 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:53:07,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-16 00:53:07,019 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:53:07,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:53:07,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1109140729, now seen corresponding path program 1 times [2020-09-16 00:53:07,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:53:07,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025415896] [2020-09-16 00:53:07,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:53:07,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:53:07,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:53:07,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025415896] [2020-09-16 00:53:07,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:53:07,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 00:53:07,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [395868498] [2020-09-16 00:53:07,065 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:53:07,066 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:53:07,071 INFO L274 McrAutomatonBuilder]: Finished intersection with 39 states and 66 transitions. [2020-09-16 00:53:07,071 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:53:07,106 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:53:07,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 00:53:07,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:53:07,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 00:53:07,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 00:53:07,107 INFO L87 Difference]: Start difference. First operand 125 states and 263 transitions. Second operand 3 states. [2020-09-16 00:53:07,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:53:07,120 INFO L93 Difference]: Finished difference Result 157 states and 314 transitions. [2020-09-16 00:53:07,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 00:53:07,120 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-09-16 00:53:07,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:53:07,121 INFO L225 Difference]: With dead ends: 157 [2020-09-16 00:53:07,122 INFO L226 Difference]: Without dead ends: 120 [2020-09-16 00:53:07,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 00:53:07,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-09-16 00:53:07,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2020-09-16 00:53:07,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-09-16 00:53:07,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 233 transitions. [2020-09-16 00:53:07,130 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 233 transitions. Word has length 14 [2020-09-16 00:53:07,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:53:07,130 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 233 transitions. [2020-09-16 00:53:07,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 00:53:07,131 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 233 transitions. [2020-09-16 00:53:07,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-16 00:53:07,137 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:53:07,137 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:53:07,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-16 00:53:07,138 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:53:07,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:53:07,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1574578981, now seen corresponding path program 1 times [2020-09-16 00:53:07,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:53:07,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930716896] [2020-09-16 00:53:07,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:53:07,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:53:07,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:53:07,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930716896] [2020-09-16 00:53:07,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:53:07,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-16 00:53:07,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [537781579] [2020-09-16 00:53:07,280 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:53:07,281 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:53:07,285 INFO L274 McrAutomatonBuilder]: Finished intersection with 29 states and 40 transitions. [2020-09-16 00:53:07,285 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:53:07,310 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4074#(<= ~__unbuffered_cnt~0 0)] [2020-09-16 00:53:07,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-16 00:53:07,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:53:07,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-16 00:53:07,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-16 00:53:07,312 INFO L87 Difference]: Start difference. First operand 118 states and 233 transitions. Second operand 7 states. [2020-09-16 00:53:07,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:53:07,377 INFO L93 Difference]: Finished difference Result 112 states and 219 transitions. [2020-09-16 00:53:07,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-16 00:53:07,378 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-09-16 00:53:07,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:53:07,378 INFO L225 Difference]: With dead ends: 112 [2020-09-16 00:53:07,379 INFO L226 Difference]: Without dead ends: 36 [2020-09-16 00:53:07,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-16 00:53:07,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-16 00:53:07,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-16 00:53:07,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-16 00:53:07,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-09-16 00:53:07,382 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 14 [2020-09-16 00:53:07,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:53:07,382 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-09-16 00:53:07,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-16 00:53:07,383 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-09-16 00:53:07,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-16 00:53:07,385 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:53:07,388 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:53:07,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-16 00:53:07,389 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:53:07,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:53:07,389 INFO L82 PathProgramCache]: Analyzing trace with hash 16794271, now seen corresponding path program 1 times [2020-09-16 00:53:07,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:53:07,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013555860] [2020-09-16 00:53:07,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:53:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:53:07,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:53:07,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013555860] [2020-09-16 00:53:07,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:53:07,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 00:53:07,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1607891359] [2020-09-16 00:53:07,492 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:53:07,495 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:53:07,505 INFO L274 McrAutomatonBuilder]: Finished intersection with 67 states and 122 transitions. [2020-09-16 00:53:07,505 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:53:07,566 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:53:07,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 00:53:07,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:53:07,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 00:53:07,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 00:53:07,567 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-09-16 00:53:07,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:53:07,577 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-09-16 00:53:07,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 00:53:07,577 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-16 00:53:07,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:53:07,578 INFO L225 Difference]: With dead ends: 35 [2020-09-16 00:53:07,578 INFO L226 Difference]: Without dead ends: 0 [2020-09-16 00:53:07,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-16 00:53:07,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-16 00:53:07,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-16 00:53:07,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-16 00:53:07,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-16 00:53:07,579 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-16 00:53:07,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:53:07,579 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-16 00:53:07,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 00:53:07,580 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-16 00:53:07,580 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-16 00:53:07,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-16 00:53:07,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 12:53:07 BasicIcfg [2020-09-16 00:53:07,585 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-16 00:53:07,588 INFO L168 Benchmark]: Toolchain (without parser) took 4970.92 ms. Allocated memory was 148.4 MB in the beginning and 244.8 MB in the end (delta: 96.5 MB). Free memory was 103.5 MB in the beginning and 124.5 MB in the end (delta: -21.0 MB). Peak memory consumption was 75.5 MB. Max. memory is 7.1 GB. [2020-09-16 00:53:07,589 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-16 00:53:07,590 INFO L168 Benchmark]: CACSL2BoogieTranslator took 759.56 ms. Allocated memory was 148.4 MB in the beginning and 206.0 MB in the end (delta: 57.7 MB). Free memory was 102.9 MB in the beginning and 163.6 MB in the end (delta: -60.8 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-09-16 00:53:07,591 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.56 ms. Allocated memory is still 206.0 MB. Free memory was 163.6 MB in the beginning and 161.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-16 00:53:07,592 INFO L168 Benchmark]: Boogie Preprocessor took 29.71 ms. Allocated memory is still 206.0 MB. Free memory was 161.7 MB in the beginning and 159.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-16 00:53:07,593 INFO L168 Benchmark]: RCFGBuilder took 527.82 ms. Allocated memory is still 206.0 MB. Free memory was 159.7 MB in the beginning and 138.1 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-09-16 00:53:07,594 INFO L168 Benchmark]: TraceAbstraction took 3583.19 ms. Allocated memory was 206.0 MB in the beginning and 244.8 MB in the end (delta: 38.8 MB). Free memory was 137.4 MB in the beginning and 124.5 MB in the end (delta: 12.9 MB). Peak memory consumption was 51.7 MB. Max. memory is 7.1 GB. [2020-09-16 00:53:07,598 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 759.56 ms. Allocated memory was 148.4 MB in the beginning and 206.0 MB in the end (delta: 57.7 MB). Free memory was 102.9 MB in the beginning and 163.6 MB in the end (delta: -60.8 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 60.56 ms. Allocated memory is still 206.0 MB. Free memory was 163.6 MB in the beginning and 161.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.71 ms. Allocated memory is still 206.0 MB. Free memory was 161.7 MB in the beginning and 159.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 527.82 ms. Allocated memory is still 206.0 MB. Free memory was 159.7 MB in the beginning and 138.1 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3583.19 ms. Allocated memory was 206.0 MB in the beginning and 244.8 MB in the end (delta: 38.8 MB). Free memory was 137.4 MB in the beginning and 124.5 MB in the end (delta: 12.9 MB). Peak memory consumption was 51.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 635 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2238 CheckedPairsTotal, 55 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 157 SDtfs, 105 SDslu, 204 SDs, 0 SdLazy, 104 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 136 GetRequests, 110 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 14 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 2531 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...