/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/safe016_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 23:45:03,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 23:45:03,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 23:45:03,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 23:45:03,439 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 23:45:03,440 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 23:45:03,442 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 23:45:03,444 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 23:45:03,445 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 23:45:03,446 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 23:45:03,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 23:45:03,449 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 23:45:03,449 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 23:45:03,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 23:45:03,451 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 23:45:03,453 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 23:45:03,453 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 23:45:03,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 23:45:03,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 23:45:03,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 23:45:03,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 23:45:03,461 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 23:45:03,462 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 23:45:03,463 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 23:45:03,466 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-11 23:45:03,466 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-11 23:45:03,466 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-11 23:45:03,467 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-11 23:45:03,468 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-11 23:45:03,469 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-11 23:45:03,469 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 23:45:03,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 23:45:03,473 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 23:45:03,474 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 23:45:03,476 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 23:45:03,476 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 23:45:03,477 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 23:45:03,478 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 23:45:03,478 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 23:45:03,479 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 23:45:03,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 23:45:03,486 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 [2020-09-11 23:45:03,536 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 23:45:03,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 23:45:03,539 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 23:45:03,539 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 23:45:03,539 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 23:45:03,540 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 23:45:03,540 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 23:45:03,540 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 23:45:03,540 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 23:45:03,541 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 23:45:03,541 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 23:45:03,542 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 23:45:03,542 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 23:45:03,542 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 23:45:03,543 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 23:45:03,543 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 23:45:03,543 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 23:45:03,543 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 23:45:03,543 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 23:45:03,544 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 23:45:03,544 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 23:45:03,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 23:45:03,544 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 23:45:03,544 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-11 23:45:03,545 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 23:45:03,545 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 23:45:03,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 23:45:03,545 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-11 23:45:03,545 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-11 23:45:03,545 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 23:45:03,546 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-11 23:45:04,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 23:45:04,033 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 23:45:04,041 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 23:45:04,043 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 23:45:04,044 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 23:45:04,046 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.oepc.i [2020-09-11 23:45:04,130 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/22b92fb0a/78aa078642a34e54a4097359d40443ac/FLAGa26a32937 [2020-09-11 23:45:04,810 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 23:45:04,811 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe016_tso.oepc.i [2020-09-11 23:45:04,828 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/22b92fb0a/78aa078642a34e54a4097359d40443ac/FLAGa26a32937 [2020-09-11 23:45:05,023 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/22b92fb0a/78aa078642a34e54a4097359d40443ac [2020-09-11 23:45:05,036 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 23:45:05,043 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 23:45:05,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 23:45:05,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 23:45:05,048 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 23:45:05,049 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:45:05" (1/1) ... [2020-09-11 23:45:05,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c79b83b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:45:05, skipping insertion in model container [2020-09-11 23:45:05,054 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:45:05" (1/1) ... [2020-09-11 23:45:05,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 23:45:05,115 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 23:45:05,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 23:45:05,633 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 23:45:05,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 23:45:05,802 INFO L208 MainTranslator]: Completed translation [2020-09-11 23:45:05,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:45:05 WrapperNode [2020-09-11 23:45:05,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 23:45:05,804 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 23:45:05,804 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 23:45:05,804 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 23:45:05,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:45:05" (1/1) ... [2020-09-11 23:45:05,832 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:45:05" (1/1) ... [2020-09-11 23:45:05,858 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 23:45:05,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 23:45:05,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 23:45:05,859 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 23:45:05,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:45:05" (1/1) ... [2020-09-11 23:45:05,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:45:05" (1/1) ... [2020-09-11 23:45:05,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:45:05" (1/1) ... [2020-09-11 23:45:05,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:45:05" (1/1) ... [2020-09-11 23:45:05,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:45:05" (1/1) ... [2020-09-11 23:45:05,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:45:05" (1/1) ... [2020-09-11 23:45:05,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:45:05" (1/1) ... [2020-09-11 23:45:05,890 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 23:45:05,890 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 23:45:05,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 23:45:05,891 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 23:45:05,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:45:05" (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 [2020-09-11 23:45:05,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 23:45:05,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-11 23:45:05,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 23:45:05,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 23:45:05,975 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-11 23:45:05,975 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-11 23:45:05,975 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-11 23:45:05,975 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-11 23:45:05,976 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-11 23:45:05,976 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-11 23:45:05,976 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-09-11 23:45:05,976 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-09-11 23:45:05,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-11 23:45:05,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 23:45:05,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 23:45:05,979 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-11 23:45:06,404 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 23:45:06,405 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-11 23:45:06,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:45:06 BoogieIcfgContainer [2020-09-11 23:45:06,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 23:45:06,412 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 23:45:06,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 23:45:06,416 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 23:45:06,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 11:45:05" (1/3) ... [2020-09-11 23:45:06,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e2ee272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:45:06, skipping insertion in model container [2020-09-11 23:45:06,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:45:05" (2/3) ... [2020-09-11 23:45:06,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e2ee272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:45:06, skipping insertion in model container [2020-09-11 23:45:06,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:45:06" (3/3) ... [2020-09-11 23:45:06,421 INFO L109 eAbstractionObserver]: Analyzing ICFG safe016_tso.oepc.i [2020-09-11 23:45:06,433 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 23:45:06,433 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-11 23:45:06,444 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 23:45:06,446 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 23:45:06,481 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:45:06,481 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:45:06,481 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:45:06,482 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:45:06,482 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:45:06,483 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:45:06,483 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:45:06,483 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:45:06,484 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:45:06,484 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:45:06,484 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:45:06,484 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:45:06,485 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:45:06,485 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:45:06,485 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:45:06,486 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:45:06,486 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:45:06,486 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:45:06,487 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:45:06,487 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:45:06,487 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:45:06,488 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:45:06,488 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:45:06,488 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:45:06,493 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:45:06,493 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:45:06,494 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:45:06,494 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:45:06,500 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:45:06,500 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:45:06,500 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:45:06,501 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:45:06,503 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:45:06,503 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:45:06,504 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:45:06,504 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:45:06,506 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:45:06,507 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:45:06,507 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:45:06,507 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:45:06,530 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-11 23:45:06,553 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 23:45:06,554 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 23:45:06,554 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-11 23:45:06,554 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-11 23:45:06,554 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 23:45:06,554 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 23:45:06,554 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 23:45:06,555 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 23:45:06,574 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 80 transitions, 180 flow [2020-09-11 23:45:06,577 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-09-11 23:45:06,633 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-09-11 23:45:06,634 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 23:45:06,641 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-09-11 23:45:06,644 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-09-11 23:45:06,670 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-09-11 23:45:06,671 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 23:45:06,671 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-09-11 23:45:06,674 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1822 [2020-09-11 23:45:06,678 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-11 23:45:08,113 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-09-11 23:45:08,202 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2895 [2020-09-11 23:45:08,203 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2020-09-11 23:45:08,208 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-09-11 23:45:08,269 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-09-11 23:45:08,272 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-09-11 23:45:08,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-11 23:45:08,285 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:45:08,286 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:45:08,287 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:45:08,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:45:08,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1118879254, now seen corresponding path program 1 times [2020-09-11 23:45:08,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:45:08,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178185555] [2020-09-11 23:45:08,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:45:08,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:45:08,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:45:08,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178185555] [2020-09-11 23:45:08,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:45:08,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:45:08,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1709820679] [2020-09-11 23:45:08,600 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:45:08,608 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:45:08,625 INFO L274 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-09-11 23:45:08,625 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:45:08,628 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:45:08,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-11 23:45:08,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:45:08,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-11 23:45:08,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-11 23:45:08,650 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-09-11 23:45:08,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:45:08,691 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-09-11 23:45:08,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-11 23:45:08,693 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-09-11 23:45:08,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:45:08,723 INFO L225 Difference]: With dead ends: 850 [2020-09-11 23:45:08,724 INFO L226 Difference]: Without dead ends: 706 [2020-09-11 23:45:08,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-11 23:45:08,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-09-11 23:45:08,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-09-11 23:45:08,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-09-11 23:45:08,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-09-11 23:45:08,915 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-09-11 23:45:08,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:45:08,917 INFO L479 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-09-11 23:45:08,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-11 23:45:08,917 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-09-11 23:45:08,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-11 23:45:08,926 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:45:08,926 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:45:08,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 23:45:08,927 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:45:08,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:45:08,927 INFO L82 PathProgramCache]: Analyzing trace with hash -325524913, now seen corresponding path program 1 times [2020-09-11 23:45:08,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:45:08,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282017077] [2020-09-11 23:45:08,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:45:09,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:45:09,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:45:09,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282017077] [2020-09-11 23:45:09,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:45:09,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:45:09,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1168284439] [2020-09-11 23:45:09,113 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:45:09,114 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:45:09,116 INFO L274 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-09-11 23:45:09,116 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:45:09,117 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:45:09,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:45:09,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:45:09,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:45:09,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:45:09,124 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-09-11 23:45:09,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:45:09,185 INFO L93 Difference]: Finished difference Result 802 states and 2662 transitions. [2020-09-11 23:45:09,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 23:45:09,186 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-11 23:45:09,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:45:09,192 INFO L225 Difference]: With dead ends: 802 [2020-09-11 23:45:09,193 INFO L226 Difference]: Without dead ends: 658 [2020-09-11 23:45:09,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:45:09,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-09-11 23:45:09,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2020-09-11 23:45:09,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2020-09-11 23:45:09,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 2230 transitions. [2020-09-11 23:45:09,221 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 2230 transitions. Word has length 11 [2020-09-11 23:45:09,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:45:09,222 INFO L479 AbstractCegarLoop]: Abstraction has 658 states and 2230 transitions. [2020-09-11 23:45:09,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:45:09,222 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 2230 transitions. [2020-09-11 23:45:09,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-11 23:45:09,223 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:45:09,224 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:45:09,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 23:45:09,224 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:45:09,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:45:09,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1502334909, now seen corresponding path program 1 times [2020-09-11 23:45:09,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:45:09,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783965038] [2020-09-11 23:45:09,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:45:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:45:09,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:45:09,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783965038] [2020-09-11 23:45:09,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:45:09,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:45:09,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2014841567] [2020-09-11 23:45:09,402 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:45:09,403 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:45:09,405 INFO L274 McrAutomatonBuilder]: Finished intersection with 14 states and 14 transitions. [2020-09-11 23:45:09,406 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:45:09,417 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:45:09,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:45:09,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:45:09,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:45:09,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:45:09,418 INFO L87 Difference]: Start difference. First operand 658 states and 2230 transitions. Second operand 4 states. [2020-09-11 23:45:09,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:45:09,492 INFO L93 Difference]: Finished difference Result 738 states and 2404 transitions. [2020-09-11 23:45:09,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 23:45:09,492 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-11 23:45:09,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:45:09,498 INFO L225 Difference]: With dead ends: 738 [2020-09-11 23:45:09,498 INFO L226 Difference]: Without dead ends: 618 [2020-09-11 23:45:09,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:45:09,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-09-11 23:45:09,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 618. [2020-09-11 23:45:09,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2020-09-11 23:45:09,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 2058 transitions. [2020-09-11 23:45:09,525 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 2058 transitions. Word has length 12 [2020-09-11 23:45:09,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:45:09,525 INFO L479 AbstractCegarLoop]: Abstraction has 618 states and 2058 transitions. [2020-09-11 23:45:09,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:45:09,526 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 2058 transitions. [2020-09-11 23:45:09,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 23:45:09,528 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:45:09,528 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:45:09,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 23:45:09,528 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:45:09,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:45:09,529 INFO L82 PathProgramCache]: Analyzing trace with hash 672248787, now seen corresponding path program 1 times [2020-09-11 23:45:09,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:45:09,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79670798] [2020-09-11 23:45:09,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:45:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:45:09,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:45:09,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79670798] [2020-09-11 23:45:09,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:45:09,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:45:09,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1518231399] [2020-09-11 23:45:09,618 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:45:09,620 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:45:09,622 INFO L274 McrAutomatonBuilder]: Finished intersection with 22 states and 30 transitions. [2020-09-11 23:45:09,623 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:45:09,676 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:45:09,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:45:09,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:45:09,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:45:09,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:45:09,678 INFO L87 Difference]: Start difference. First operand 618 states and 2058 transitions. Second operand 4 states. [2020-09-11 23:45:09,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:45:09,731 INFO L93 Difference]: Finished difference Result 658 states and 2130 transitions. [2020-09-11 23:45:09,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 23:45:09,732 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-11 23:45:09,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:45:09,736 INFO L225 Difference]: With dead ends: 658 [2020-09-11 23:45:09,738 INFO L226 Difference]: Without dead ends: 578 [2020-09-11 23:45:09,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:45:09,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-11 23:45:09,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2020-09-11 23:45:09,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-09-11 23:45:09,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 1906 transitions. [2020-09-11 23:45:09,763 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 1906 transitions. Word has length 13 [2020-09-11 23:45:09,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:45:09,763 INFO L479 AbstractCegarLoop]: Abstraction has 578 states and 1906 transitions. [2020-09-11 23:45:09,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:45:09,764 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 1906 transitions. [2020-09-11 23:45:09,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 23:45:09,765 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:45:09,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:45:09,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 23:45:09,766 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:45:09,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:45:09,767 INFO L82 PathProgramCache]: Analyzing trace with hash 796896076, now seen corresponding path program 1 times [2020-09-11 23:45:09,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:45:09,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253986908] [2020-09-11 23:45:09,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:45:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:45:09,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:45:09,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253986908] [2020-09-11 23:45:09,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:45:09,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:45:09,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [419272454] [2020-09-11 23:45:09,834 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:45:09,835 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:45:09,838 INFO L274 McrAutomatonBuilder]: Finished intersection with 28 states and 43 transitions. [2020-09-11 23:45:09,838 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:45:09,869 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:45:09,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:45:09,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:45:09,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:45:09,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:45:09,871 INFO L87 Difference]: Start difference. First operand 578 states and 1906 transitions. Second operand 4 states. [2020-09-11 23:45:09,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:45:09,917 INFO L93 Difference]: Finished difference Result 814 states and 2558 transitions. [2020-09-11 23:45:09,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 23:45:09,918 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-11 23:45:09,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:45:09,924 INFO L225 Difference]: With dead ends: 814 [2020-09-11 23:45:09,924 INFO L226 Difference]: Without dead ends: 618 [2020-09-11 23:45:09,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:45:09,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-09-11 23:45:09,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 538. [2020-09-11 23:45:09,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-09-11 23:45:09,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1706 transitions. [2020-09-11 23:45:09,950 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1706 transitions. Word has length 14 [2020-09-11 23:45:09,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:45:09,950 INFO L479 AbstractCegarLoop]: Abstraction has 538 states and 1706 transitions. [2020-09-11 23:45:09,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:45:09,951 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1706 transitions. [2020-09-11 23:45:09,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 23:45:09,953 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:45:09,953 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:45:09,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 23:45:09,954 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:45:09,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:45:09,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1106275611, now seen corresponding path program 1 times [2020-09-11 23:45:09,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:45:09,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899512627] [2020-09-11 23:45:09,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:45:09,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:45:10,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:45:10,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899512627] [2020-09-11 23:45:10,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:45:10,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:45:10,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [915830894] [2020-09-11 23:45:10,037 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:45:10,038 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:45:10,042 INFO L274 McrAutomatonBuilder]: Finished intersection with 26 states and 38 transitions. [2020-09-11 23:45:10,043 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:45:10,113 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:45:10,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 23:45:10,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:45:10,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 23:45:10,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:45:10,115 INFO L87 Difference]: Start difference. First operand 538 states and 1706 transitions. Second operand 5 states. [2020-09-11 23:45:10,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:45:10,165 INFO L93 Difference]: Finished difference Result 838 states and 2616 transitions. [2020-09-11 23:45:10,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 23:45:10,166 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-11 23:45:10,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:45:10,170 INFO L225 Difference]: With dead ends: 838 [2020-09-11 23:45:10,170 INFO L226 Difference]: Without dead ends: 490 [2020-09-11 23:45:10,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-11 23:45:10,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-09-11 23:45:10,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 490. [2020-09-11 23:45:10,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 490 states. [2020-09-11 23:45:10,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 1516 transitions. [2020-09-11 23:45:10,188 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 1516 transitions. Word has length 14 [2020-09-11 23:45:10,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:45:10,188 INFO L479 AbstractCegarLoop]: Abstraction has 490 states and 1516 transitions. [2020-09-11 23:45:10,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 23:45:10,189 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 1516 transitions. [2020-09-11 23:45:10,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 23:45:10,190 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:45:10,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:45:10,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-11 23:45:10,190 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:45:10,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:45:10,191 INFO L82 PathProgramCache]: Analyzing trace with hash -635139139, now seen corresponding path program 2 times [2020-09-11 23:45:10,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:45:10,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205198292] [2020-09-11 23:45:10,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:45:10,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:45:10,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:45:10,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205198292] [2020-09-11 23:45:10,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:45:10,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:45:10,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1375583105] [2020-09-11 23:45:10,256 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:45:10,258 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:45:10,262 INFO L274 McrAutomatonBuilder]: Finished intersection with 28 states and 42 transitions. [2020-09-11 23:45:10,262 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:45:10,341 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:45:10,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:45:10,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:45:10,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:45:10,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:45:10,342 INFO L87 Difference]: Start difference. First operand 490 states and 1516 transitions. Second operand 4 states. [2020-09-11 23:45:10,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:45:10,369 INFO L93 Difference]: Finished difference Result 514 states and 1556 transitions. [2020-09-11 23:45:10,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 23:45:10,370 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-11 23:45:10,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:45:10,374 INFO L225 Difference]: With dead ends: 514 [2020-09-11 23:45:10,375 INFO L226 Difference]: Without dead ends: 466 [2020-09-11 23:45:10,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:45:10,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-09-11 23:45:10,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 466. [2020-09-11 23:45:10,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-09-11 23:45:10,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 1428 transitions. [2020-09-11 23:45:10,392 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 1428 transitions. Word has length 14 [2020-09-11 23:45:10,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:45:10,393 INFO L479 AbstractCegarLoop]: Abstraction has 466 states and 1428 transitions. [2020-09-11 23:45:10,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:45:10,393 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 1428 transitions. [2020-09-11 23:45:10,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 23:45:10,395 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:45:10,395 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:45:10,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-11 23:45:10,395 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:45:10,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:45:10,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1523462552, now seen corresponding path program 1 times [2020-09-11 23:45:10,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:45:10,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726384038] [2020-09-11 23:45:10,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:45:10,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:45:10,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:45:10,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726384038] [2020-09-11 23:45:10,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:45:10,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:45:10,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1135674874] [2020-09-11 23:45:10,458 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:45:10,460 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:45:10,464 INFO L274 McrAutomatonBuilder]: Finished intersection with 38 states and 61 transitions. [2020-09-11 23:45:10,464 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:45:10,500 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:45:10,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:45:10,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:45:10,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:45:10,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:45:10,501 INFO L87 Difference]: Start difference. First operand 466 states and 1428 transitions. Second operand 4 states. [2020-09-11 23:45:10,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:45:10,550 INFO L93 Difference]: Finished difference Result 686 states and 2008 transitions. [2020-09-11 23:45:10,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 23:45:10,551 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-09-11 23:45:10,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:45:10,555 INFO L225 Difference]: With dead ends: 686 [2020-09-11 23:45:10,555 INFO L226 Difference]: Without dead ends: 490 [2020-09-11 23:45:10,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:45:10,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-09-11 23:45:10,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 442. [2020-09-11 23:45:10,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-09-11 23:45:10,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1272 transitions. [2020-09-11 23:45:10,570 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1272 transitions. Word has length 15 [2020-09-11 23:45:10,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:45:10,571 INFO L479 AbstractCegarLoop]: Abstraction has 442 states and 1272 transitions. [2020-09-11 23:45:10,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:45:10,571 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1272 transitions. [2020-09-11 23:45:10,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 23:45:10,572 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:45:10,572 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:45:10,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-11 23:45:10,573 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:45:10,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:45:10,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1081767860, now seen corresponding path program 1 times [2020-09-11 23:45:10,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:45:10,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769088667] [2020-09-11 23:45:10,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:45:10,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:45:10,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:45:10,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769088667] [2020-09-11 23:45:10,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:45:10,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:45:10,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [976809345] [2020-09-11 23:45:10,642 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:45:10,644 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:45:10,649 INFO L274 McrAutomatonBuilder]: Finished intersection with 46 states and 85 transitions. [2020-09-11 23:45:10,649 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:45:10,933 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:45:10,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 23:45:10,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:45:10,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 23:45:10,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:45:10,935 INFO L87 Difference]: Start difference. First operand 442 states and 1272 transitions. Second operand 5 states. [2020-09-11 23:45:10,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:45:10,975 INFO L93 Difference]: Finished difference Result 578 states and 1616 transitions. [2020-09-11 23:45:10,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 23:45:10,975 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-11 23:45:10,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:45:10,977 INFO L225 Difference]: With dead ends: 578 [2020-09-11 23:45:10,978 INFO L226 Difference]: Without dead ends: 254 [2020-09-11 23:45:10,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-11 23:45:10,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-09-11 23:45:10,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2020-09-11 23:45:10,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-09-11 23:45:10,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 691 transitions. [2020-09-11 23:45:10,987 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 691 transitions. Word has length 15 [2020-09-11 23:45:10,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:45:10,988 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 691 transitions. [2020-09-11 23:45:10,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 23:45:10,988 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 691 transitions. [2020-09-11 23:45:10,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 23:45:10,989 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:45:10,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:45:10,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-11 23:45:10,989 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:45:10,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:45:10,990 INFO L82 PathProgramCache]: Analyzing trace with hash 807678122, now seen corresponding path program 2 times [2020-09-11 23:45:10,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:45:10,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778682509] [2020-09-11 23:45:10,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:45:11,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:45:11,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:45:11,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778682509] [2020-09-11 23:45:11,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:45:11,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:45:11,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1904357730] [2020-09-11 23:45:11,073 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:45:11,075 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:45:11,079 INFO L274 McrAutomatonBuilder]: Finished intersection with 34 states and 55 transitions. [2020-09-11 23:45:11,079 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:45:11,112 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:45:11,135 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:45:11,163 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:45:11,181 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:45:11,191 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:45:11,204 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:45:11,264 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:45:11,284 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:45:11,304 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:45:11,321 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:45:11,325 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [17833#(not (= 4 ~__unbuffered_cnt~0))] [2020-09-11 23:45:11,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 23:45:11,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:45:11,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 23:45:11,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:45:11,326 INFO L87 Difference]: Start difference. First operand 254 states and 691 transitions. Second operand 5 states. [2020-09-11 23:45:11,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:45:11,386 INFO L93 Difference]: Finished difference Result 244 states and 585 transitions. [2020-09-11 23:45:11,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 23:45:11,387 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-11 23:45:11,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:45:11,388 INFO L225 Difference]: With dead ends: 244 [2020-09-11 23:45:11,389 INFO L226 Difference]: Without dead ends: 171 [2020-09-11 23:45:11,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-11 23:45:11,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-09-11 23:45:11,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-09-11 23:45:11,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-09-11 23:45:11,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 378 transitions. [2020-09-11 23:45:11,395 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 378 transitions. Word has length 15 [2020-09-11 23:45:11,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:45:11,395 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 378 transitions. [2020-09-11 23:45:11,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 23:45:11,396 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 378 transitions. [2020-09-11 23:45:11,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 23:45:11,397 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:45:11,397 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:45:11,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-11 23:45:11,397 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:45:11,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:45:11,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1331262194, now seen corresponding path program 1 times [2020-09-11 23:45:11,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:45:11,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347317601] [2020-09-11 23:45:11,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:45:11,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:45:11,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:45:11,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347317601] [2020-09-11 23:45:11,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:45:11,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 23:45:11,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1813005667] [2020-09-11 23:45:11,478 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:45:11,481 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:45:11,488 INFO L274 McrAutomatonBuilder]: Finished intersection with 45 states and 77 transitions. [2020-09-11 23:45:11,489 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:45:11,496 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:45:11,559 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:45:11,602 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:45:11,725 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:45:11,733 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:45:11,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-11 23:45:11,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:45:11,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-11 23:45:11,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-11 23:45:11,734 INFO L87 Difference]: Start difference. First operand 171 states and 378 transitions. Second operand 6 states. [2020-09-11 23:45:11,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:45:11,789 INFO L93 Difference]: Finished difference Result 147 states and 307 transitions. [2020-09-11 23:45:11,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 23:45:11,790 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-09-11 23:45:11,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:45:11,791 INFO L225 Difference]: With dead ends: 147 [2020-09-11 23:45:11,791 INFO L226 Difference]: Without dead ends: 107 [2020-09-11 23:45:11,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 18 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-11 23:45:11,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-09-11 23:45:11,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-09-11 23:45:11,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-09-11 23:45:11,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 217 transitions. [2020-09-11 23:45:11,795 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 217 transitions. Word has length 17 [2020-09-11 23:45:11,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:45:11,795 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 217 transitions. [2020-09-11 23:45:11,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-11 23:45:11,796 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 217 transitions. [2020-09-11 23:45:11,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 23:45:11,796 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:45:11,797 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:45:11,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-11 23:45:11,797 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:45:11,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:45:11,797 INFO L82 PathProgramCache]: Analyzing trace with hash 461519417, now seen corresponding path program 1 times [2020-09-11 23:45:11,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:45:11,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263858373] [2020-09-11 23:45:11,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:45:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:45:11,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:45:11,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263858373] [2020-09-11 23:45:11,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:45:11,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 23:45:11,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1776983347] [2020-09-11 23:45:11,862 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:45:11,863 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:45:11,868 INFO L274 McrAutomatonBuilder]: Finished intersection with 29 states and 36 transitions. [2020-09-11 23:45:11,868 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:45:11,874 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:45:11,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 23:45:11,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:45:11,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 23:45:11,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:45:11,875 INFO L87 Difference]: Start difference. First operand 107 states and 217 transitions. Second operand 5 states. [2020-09-11 23:45:11,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:45:11,907 INFO L93 Difference]: Finished difference Result 121 states and 234 transitions. [2020-09-11 23:45:11,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 23:45:11,908 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-11 23:45:11,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:45:11,909 INFO L225 Difference]: With dead ends: 121 [2020-09-11 23:45:11,909 INFO L226 Difference]: Without dead ends: 105 [2020-09-11 23:45:11,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-11 23:45:11,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-09-11 23:45:11,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2020-09-11 23:45:11,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-11 23:45:11,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 205 transitions. [2020-09-11 23:45:11,913 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 205 transitions. Word has length 19 [2020-09-11 23:45:11,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:45:11,913 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 205 transitions. [2020-09-11 23:45:11,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 23:45:11,914 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 205 transitions. [2020-09-11 23:45:11,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 23:45:11,914 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:45:11,914 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:45:11,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-11 23:45:11,915 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:45:11,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:45:11,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1319799301, now seen corresponding path program 2 times [2020-09-11 23:45:11,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:45:11,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885079077] [2020-09-11 23:45:11,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:45:11,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:45:11,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:45:11,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885079077] [2020-09-11 23:45:11,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:45:11,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-11 23:45:11,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [324916186] [2020-09-11 23:45:11,992 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:45:11,994 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:45:12,000 INFO L274 McrAutomatonBuilder]: Finished intersection with 37 states and 51 transitions. [2020-09-11 23:45:12,000 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:45:12,007 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:45:12,029 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [19136#(<= ~__unbuffered_cnt~0 0)] [2020-09-11 23:45:12,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-11 23:45:12,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:45:12,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-11 23:45:12,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-11 23:45:12,030 INFO L87 Difference]: Start difference. First operand 103 states and 205 transitions. Second operand 8 states. [2020-09-11 23:45:12,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:45:12,070 INFO L93 Difference]: Finished difference Result 93 states and 190 transitions. [2020-09-11 23:45:12,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 23:45:12,070 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-09-11 23:45:12,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:45:12,071 INFO L225 Difference]: With dead ends: 93 [2020-09-11 23:45:12,071 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 23:45:12,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-11 23:45:12,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 23:45:12,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 23:45:12,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 23:45:12,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 23:45:12,072 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-09-11 23:45:12,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:45:12,072 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 23:45:12,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-11 23:45:12,073 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 23:45:12,073 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 23:45:12,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-11 23:45:12,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 11:45:12 BasicIcfg [2020-09-11 23:45:12,078 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 23:45:12,080 INFO L168 Benchmark]: Toolchain (without parser) took 7042.21 ms. Allocated memory was 138.4 MB in the beginning and 296.2 MB in the end (delta: 157.8 MB). Free memory was 100.4 MB in the beginning and 168.6 MB in the end (delta: -68.2 MB). Peak memory consumption was 89.6 MB. Max. memory is 7.1 GB. [2020-09-11 23:45:12,081 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 138.4 MB. Free memory was 120.0 MB in the beginning and 119.5 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-09-11 23:45:12,082 INFO L168 Benchmark]: CACSL2BoogieTranslator took 759.67 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 99.6 MB in the beginning and 157.8 MB in the end (delta: -58.3 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-09-11 23:45:12,083 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.46 ms. Allocated memory is still 201.9 MB. Free memory was 157.8 MB in the beginning and 155.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-11 23:45:12,083 INFO L168 Benchmark]: Boogie Preprocessor took 31.24 ms. Allocated memory is still 201.9 MB. Free memory was 155.9 MB in the beginning and 154.9 MB in the end (delta: 985.3 kB). Peak memory consumption was 985.3 kB. Max. memory is 7.1 GB. [2020-09-11 23:45:12,084 INFO L168 Benchmark]: RCFGBuilder took 520.57 ms. Allocated memory is still 201.9 MB. Free memory was 154.9 MB in the beginning and 130.9 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-09-11 23:45:12,085 INFO L168 Benchmark]: TraceAbstraction took 5665.91 ms. Allocated memory was 201.9 MB in the beginning and 296.2 MB in the end (delta: 94.4 MB). Free memory was 129.9 MB in the beginning and 168.6 MB in the end (delta: -38.7 MB). Peak memory consumption was 55.7 MB. Max. memory is 7.1 GB. [2020-09-11 23:45:12,089 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 138.4 MB. Free memory was 120.0 MB in the beginning and 119.5 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 759.67 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 99.6 MB in the beginning and 157.8 MB in the end (delta: -58.3 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 54.46 ms. Allocated memory is still 201.9 MB. Free memory was 157.8 MB in the beginning and 155.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.24 ms. Allocated memory is still 201.9 MB. Free memory was 155.9 MB in the beginning and 154.9 MB in the end (delta: 985.3 kB). Peak memory consumption was 985.3 kB. Max. memory is 7.1 GB. * RCFGBuilder took 520.57 ms. Allocated memory is still 201.9 MB. Free memory was 154.9 MB in the beginning and 130.9 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5665.91 ms. Allocated memory was 201.9 MB in the beginning and 296.2 MB in the end (delta: 94.4 MB). Free memory was 129.9 MB in the beginning and 168.6 MB in the end (delta: -38.7 MB). Peak memory consumption was 55.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 91 ProgramPointsBefore, 39 ProgramPointsAfterwards, 80 TransitionsBefore, 27 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 927 VarBasedMoverChecksPositive, 22 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2895 CheckedPairsTotal, 62 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 5 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.5s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 353 SDtfs, 268 SDslu, 567 SDs, 0 SdLazy, 203 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 323 GetRequests, 254 SyntacticMatches, 19 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=850occurred 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: 0.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 130 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 188 NumberOfCodeBlocks, 188 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 175 ConstructedInterpolants, 0 QuantifiedInterpolants, 7133 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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...