/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/thin002_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 13:51:41,489 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 13:51:41,492 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 13:51:41,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 13:51:41,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 13:51:41,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 13:51:41,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 13:51:41,519 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 13:51:41,520 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 13:51:41,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 13:51:41,522 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 13:51:41,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 13:51:41,523 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 13:51:41,524 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 13:51:41,525 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 13:51:41,526 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 13:51:41,527 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 13:51:41,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 13:51:41,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 13:51:41,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 13:51:41,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 13:51:41,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 13:51:41,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 13:51:41,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 13:51:41,538 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 13:51:41,538 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 13:51:41,539 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 13:51:41,539 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 13:51:41,540 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 13:51:41,541 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 13:51:41,541 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 13:51:41,542 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 13:51:41,542 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 13:51:41,543 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 13:51:41,544 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 13:51:41,544 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 13:51:41,545 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 13:51:41,545 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 13:51:41,545 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 13:51:41,546 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 13:51:41,547 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 13:51:41,548 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-16 13:51:41,574 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 13:51:41,574 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 13:51:41,577 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 13:51:41,577 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 13:51:41,577 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 13:51:41,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 13:51:41,578 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 13:51:41,578 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 13:51:41,578 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 13:51:41,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 13:51:41,578 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 13:51:41,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 13:51:41,579 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 13:51:41,579 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 13:51:41,579 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 13:51:41,579 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 13:51:41,580 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 13:51:41,580 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 13:51:41,582 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 13:51:41,582 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 13:51:41,582 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 13:51:41,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 13:51:41,583 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 13:51:41,583 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 13:51:41,583 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 13:51:41,584 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 13:51:41,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 13:51:41,584 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 13:51:41,584 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 13:51:41,584 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 13:51:41,585 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 13:51:41,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 13:51:41,899 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 13:51:41,902 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 13:51:41,904 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 13:51:41,904 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 13:51:41,905 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc.i [2020-10-16 13:51:41,962 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2ef7e01d/4c0c503971884e97bdfb88657339e358/FLAG44e4cba49 [2020-10-16 13:51:42,432 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 13:51:42,433 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc.i [2020-10-16 13:51:42,456 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2ef7e01d/4c0c503971884e97bdfb88657339e358/FLAG44e4cba49 [2020-10-16 13:51:42,797 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2ef7e01d/4c0c503971884e97bdfb88657339e358 [2020-10-16 13:51:42,808 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 13:51:42,810 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 13:51:42,812 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 13:51:42,812 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 13:51:42,815 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 13:51:42,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:51:42" (1/1) ... [2020-10-16 13:51:42,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6428aca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:51:42, skipping insertion in model container [2020-10-16 13:51:42,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:51:42" (1/1) ... [2020-10-16 13:51:42,826 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 13:51:42,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 13:51:43,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:51:43,330 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 13:51:43,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:51:43,587 INFO L208 MainTranslator]: Completed translation [2020-10-16 13:51:43,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:51:43 WrapperNode [2020-10-16 13:51:43,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 13:51:43,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 13:51:43,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 13:51:43,589 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 13:51:43,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:51:43" (1/1) ... [2020-10-16 13:51:43,612 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:51:43" (1/1) ... [2020-10-16 13:51:43,633 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 13:51:43,633 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 13:51:43,633 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 13:51:43,633 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 13:51:43,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:51:43" (1/1) ... [2020-10-16 13:51:43,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:51:43" (1/1) ... [2020-10-16 13:51:43,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:51:43" (1/1) ... [2020-10-16 13:51:43,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:51:43" (1/1) ... [2020-10-16 13:51:43,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:51:43" (1/1) ... [2020-10-16 13:51:43,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:51:43" (1/1) ... [2020-10-16 13:51:43,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:51:43" (1/1) ... [2020-10-16 13:51:43,658 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 13:51:43,659 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 13:51:43,659 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 13:51:43,659 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 13:51:43,660 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:51:43" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 13:51:43,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 13:51:43,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 13:51:43,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 13:51:43,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 13:51:43,733 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 13:51:43,733 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 13:51:43,734 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 13:51:43,734 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 13:51:43,734 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 13:51:43,734 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 13:51:43,734 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-16 13:51:43,734 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-16 13:51:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 13:51:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 13:51:43,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 13:51:43,737 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 13:51:44,099 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 13:51:44,100 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 13:51:44,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:51:44 BoogieIcfgContainer [2020-10-16 13:51:44,102 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 13:51:44,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 13:51:44,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 13:51:44,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 13:51:44,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:51:42" (1/3) ... [2020-10-16 13:51:44,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d30112f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:51:44, skipping insertion in model container [2020-10-16 13:51:44,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:51:43" (2/3) ... [2020-10-16 13:51:44,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d30112f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:51:44, skipping insertion in model container [2020-10-16 13:51:44,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:51:44" (3/3) ... [2020-10-16 13:51:44,121 INFO L111 eAbstractionObserver]: Analyzing ICFG thin002_pso.oepc.i [2020-10-16 13:51:44,133 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 13:51:44,134 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 13:51:44,143 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 13:51:44,144 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 13:51:44,189 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:44,190 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:44,190 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:44,190 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:44,192 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:44,192 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:44,193 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:44,193 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:44,193 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:44,194 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:44,194 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:44,194 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:44,195 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:44,195 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:44,195 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:44,196 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:44,196 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:44,196 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:44,197 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:44,197 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:44,197 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:44,197 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:44,198 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:44,198 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:44,202 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:44,203 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:44,203 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:44,203 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:44,209 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:44,209 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:44,210 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:44,210 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:44,212 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:44,212 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:44,213 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:44,213 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:44,217 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:44,217 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:44,217 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:44,218 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:44,220 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 13:51:44,233 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-16 13:51:44,252 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 13:51:44,252 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 13:51:44,253 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 13:51:44,253 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 13:51:44,253 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 13:51:44,253 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 13:51:44,253 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 13:51:44,253 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 13:51:44,266 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 13:51:44,267 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 86 transitions, 192 flow [2020-10-16 13:51:44,269 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 86 transitions, 192 flow [2020-10-16 13:51:44,270 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-10-16 13:51:44,334 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-10-16 13:51:44,335 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 13:51:44,340 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2020-10-16 13:51:44,344 INFO L117 LiptonReduction]: Number of co-enabled transitions 2016 [2020-10-16 13:51:45,662 INFO L132 LiptonReduction]: Checked pairs total: 4737 [2020-10-16 13:51:45,662 INFO L134 LiptonReduction]: Total number of compositions: 68 [2020-10-16 13:51:45,669 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 29 transitions, 78 flow [2020-10-16 13:51:45,779 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1450 states. [2020-10-16 13:51:45,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states. [2020-10-16 13:51:45,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 13:51:45,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:51:45,794 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:51:45,794 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:51:45,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:51:45,802 INFO L82 PathProgramCache]: Analyzing trace with hash 546901279, now seen corresponding path program 1 times [2020-10-16 13:51:45,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:51:45,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198931247] [2020-10-16 13:51:45,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:51:45,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:51:45,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:51:45,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198931247] [2020-10-16 13:51:46,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:51:46,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:51:46,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [567784896] [2020-10-16 13:51:46,002 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:51:46,005 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:51:46,020 INFO L258 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-10-16 13:51:46,021 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:51:46,025 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:51:46,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 13:51:46,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:51:46,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 13:51:46,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 13:51:46,040 INFO L87 Difference]: Start difference. First operand 1450 states. Second operand 2 states. [2020-10-16 13:51:46,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:51:46,116 INFO L93 Difference]: Finished difference Result 1450 states and 5376 transitions. [2020-10-16 13:51:46,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 13:51:46,118 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-16 13:51:46,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:51:46,173 INFO L225 Difference]: With dead ends: 1450 [2020-10-16 13:51:46,173 INFO L226 Difference]: Without dead ends: 1194 [2020-10-16 13:51:46,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 13:51:46,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-10-16 13:51:46,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1194. [2020-10-16 13:51:46,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2020-10-16 13:51:46,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 4352 transitions. [2020-10-16 13:51:46,330 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 4352 transitions. Word has length 10 [2020-10-16 13:51:46,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:51:46,332 INFO L481 AbstractCegarLoop]: Abstraction has 1194 states and 4352 transitions. [2020-10-16 13:51:46,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 13:51:46,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 4352 transitions. [2020-10-16 13:51:46,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 13:51:46,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:51:46,335 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:51:46,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 13:51:46,336 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:51:46,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:51:46,336 INFO L82 PathProgramCache]: Analyzing trace with hash -225951647, now seen corresponding path program 1 times [2020-10-16 13:51:46,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:51:46,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344183678] [2020-10-16 13:51:46,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:51:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:51:46,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:51:46,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344183678] [2020-10-16 13:51:46,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:51:46,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:51:46,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [411377191] [2020-10-16 13:51:46,487 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:51:46,488 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:51:46,490 INFO L258 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-10-16 13:51:46,490 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:51:46,491 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:51:46,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:51:46,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:51:46,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:51:46,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:51:46,494 INFO L87 Difference]: Start difference. First operand 1194 states and 4352 transitions. Second operand 4 states. [2020-10-16 13:51:46,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:51:46,539 INFO L93 Difference]: Finished difference Result 1322 states and 4640 transitions. [2020-10-16 13:51:46,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:51:46,539 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-16 13:51:46,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:51:46,549 INFO L225 Difference]: With dead ends: 1322 [2020-10-16 13:51:46,549 INFO L226 Difference]: Without dead ends: 1066 [2020-10-16 13:51:46,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:51:46,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-10-16 13:51:46,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2020-10-16 13:51:46,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-10-16 13:51:46,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 3808 transitions. [2020-10-16 13:51:46,594 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 3808 transitions. Word has length 11 [2020-10-16 13:51:46,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:51:46,594 INFO L481 AbstractCegarLoop]: Abstraction has 1066 states and 3808 transitions. [2020-10-16 13:51:46,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:51:46,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 3808 transitions. [2020-10-16 13:51:46,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 13:51:46,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:51:46,597 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:51:46,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 13:51:46,598 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:51:46,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:51:46,598 INFO L82 PathProgramCache]: Analyzing trace with hash -426404145, now seen corresponding path program 1 times [2020-10-16 13:51:46,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:51:46,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757952598] [2020-10-16 13:51:46,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:51:46,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:51:46,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:51:46,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757952598] [2020-10-16 13:51:46,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:51:46,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:51:46,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [284871822] [2020-10-16 13:51:46,668 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:51:46,670 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:51:46,672 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-10-16 13:51:46,672 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:51:46,734 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:51:46,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:51:46,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:51:46,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:51:46,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:51:46,735 INFO L87 Difference]: Start difference. First operand 1066 states and 3808 transitions. Second operand 4 states. [2020-10-16 13:51:46,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:51:46,765 INFO L93 Difference]: Finished difference Result 1162 states and 4016 transitions. [2020-10-16 13:51:46,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:51:46,765 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-16 13:51:46,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:51:46,774 INFO L225 Difference]: With dead ends: 1162 [2020-10-16 13:51:46,774 INFO L226 Difference]: Without dead ends: 970 [2020-10-16 13:51:46,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:51:46,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2020-10-16 13:51:46,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2020-10-16 13:51:46,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-10-16 13:51:46,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 3408 transitions. [2020-10-16 13:51:46,812 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 3408 transitions. Word has length 12 [2020-10-16 13:51:46,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:51:46,812 INFO L481 AbstractCegarLoop]: Abstraction has 970 states and 3408 transitions. [2020-10-16 13:51:46,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:51:46,813 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 3408 transitions. [2020-10-16 13:51:46,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 13:51:46,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:51:46,815 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:51:46,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 13:51:46,816 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:51:46,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:51:46,816 INFO L82 PathProgramCache]: Analyzing trace with hash -333650641, now seen corresponding path program 1 times [2020-10-16 13:51:46,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:51:46,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680180284] [2020-10-16 13:51:46,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:51:46,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:51:46,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:51:46,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680180284] [2020-10-16 13:51:46,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:51:46,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:51:46,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [344705164] [2020-10-16 13:51:46,880 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:51:46,882 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:51:46,885 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 44 transitions. [2020-10-16 13:51:46,885 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:51:46,960 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:51:46,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:51:46,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:51:46,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:51:46,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:51:46,961 INFO L87 Difference]: Start difference. First operand 970 states and 3408 transitions. Second operand 5 states. [2020-10-16 13:51:47,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:51:47,012 INFO L93 Difference]: Finished difference Result 1210 states and 4120 transitions. [2020-10-16 13:51:47,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:51:47,012 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 13:51:47,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:51:47,018 INFO L225 Difference]: With dead ends: 1210 [2020-10-16 13:51:47,018 INFO L226 Difference]: Without dead ends: 586 [2020-10-16 13:51:47,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-16 13:51:47,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2020-10-16 13:51:47,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 586. [2020-10-16 13:51:47,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586 states. [2020-10-16 13:51:47,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 1872 transitions. [2020-10-16 13:51:47,069 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 1872 transitions. Word has length 13 [2020-10-16 13:51:47,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:51:47,069 INFO L481 AbstractCegarLoop]: Abstraction has 586 states and 1872 transitions. [2020-10-16 13:51:47,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:51:47,070 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 1872 transitions. [2020-10-16 13:51:47,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 13:51:47,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:51:47,071 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:51:47,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 13:51:47,072 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:51:47,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:51:47,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1296364861, now seen corresponding path program 1 times [2020-10-16 13:51:47,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:51:47,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134063917] [2020-10-16 13:51:47,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:51:47,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:51:47,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:51:47,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134063917] [2020-10-16 13:51:47,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:51:47,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:51:47,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [584650368] [2020-10-16 13:51:47,133 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:51:47,135 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:51:47,143 INFO L258 McrAutomatonBuilder]: Finished intersection with 52 states and 100 transitions. [2020-10-16 13:51:47,143 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:51:47,280 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:51:47,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:51:47,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:51:47,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:51:47,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:51:47,281 INFO L87 Difference]: Start difference. First operand 586 states and 1872 transitions. Second operand 5 states. [2020-10-16 13:51:47,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:51:47,322 INFO L93 Difference]: Finished difference Result 802 states and 2494 transitions. [2020-10-16 13:51:47,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:51:47,323 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-16 13:51:47,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:51:47,325 INFO L225 Difference]: With dead ends: 802 [2020-10-16 13:51:47,326 INFO L226 Difference]: Without dead ends: 346 [2020-10-16 13:51:47,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-16 13:51:47,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-16 13:51:47,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2020-10-16 13:51:47,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2020-10-16 13:51:47,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 1012 transitions. [2020-10-16 13:51:47,337 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 1012 transitions. Word has length 15 [2020-10-16 13:51:47,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:51:47,338 INFO L481 AbstractCegarLoop]: Abstraction has 346 states and 1012 transitions. [2020-10-16 13:51:47,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:51:47,338 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 1012 transitions. [2020-10-16 13:51:47,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-16 13:51:47,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:51:47,339 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:51:47,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 13:51:47,339 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:51:47,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:51:47,340 INFO L82 PathProgramCache]: Analyzing trace with hash 275175569, now seen corresponding path program 1 times [2020-10-16 13:51:47,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:51:47,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011507039] [2020-10-16 13:51:47,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:51:47,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:51:47,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:51:47,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011507039] [2020-10-16 13:51:47,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:51:47,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:51:47,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1471763744] [2020-10-16 13:51:47,409 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:51:47,412 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:51:47,417 INFO L258 McrAutomatonBuilder]: Finished intersection with 44 states and 70 transitions. [2020-10-16 13:51:47,417 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:51:47,505 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:51:47,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:51:47,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:51:47,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:51:47,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:51:47,507 INFO L87 Difference]: Start difference. First operand 346 states and 1012 transitions. Second operand 5 states. [2020-10-16 13:51:47,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:51:47,543 INFO L93 Difference]: Finished difference Result 430 states and 1224 transitions. [2020-10-16 13:51:47,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:51:47,543 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-16 13:51:47,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:51:47,545 INFO L225 Difference]: With dead ends: 430 [2020-10-16 13:51:47,545 INFO L226 Difference]: Without dead ends: 148 [2020-10-16 13:51:47,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-16 13:51:47,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-16 13:51:47,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2020-10-16 13:51:47,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-16 13:51:47,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 398 transitions. [2020-10-16 13:51:47,551 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 398 transitions. Word has length 16 [2020-10-16 13:51:47,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:51:47,551 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 398 transitions. [2020-10-16 13:51:47,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:51:47,552 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 398 transitions. [2020-10-16 13:51:47,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-16 13:51:47,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:51:47,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:51:47,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 13:51:47,553 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:51:47,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:51:47,553 INFO L82 PathProgramCache]: Analyzing trace with hash 355522076, now seen corresponding path program 1 times [2020-10-16 13:51:47,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:51:47,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082313166] [2020-10-16 13:51:47,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:51:47,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:51:47,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:51:47,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082313166] [2020-10-16 13:51:47,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:51:47,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:51:47,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [91755477] [2020-10-16 13:51:47,608 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:51:47,610 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:51:47,614 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 32 transitions. [2020-10-16 13:51:47,614 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:51:47,635 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:51:47,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:51:47,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:51:47,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:51:47,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:51:47,636 INFO L87 Difference]: Start difference. First operand 148 states and 398 transitions. Second operand 5 states. [2020-10-16 13:51:47,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:51:47,665 INFO L93 Difference]: Finished difference Result 124 states and 322 transitions. [2020-10-16 13:51:47,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:51:47,666 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-16 13:51:47,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:51:47,666 INFO L225 Difference]: With dead ends: 124 [2020-10-16 13:51:47,666 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 13:51:47,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-16 13:51:47,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 13:51:47,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 13:51:47,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 13:51:47,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 13:51:47,668 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-16 13:51:47,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:51:47,669 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 13:51:47,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:51:47,669 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 13:51:47,669 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 13:51:47,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 13:51:47,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:51:47 BasicIcfg [2020-10-16 13:51:47,673 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 13:51:47,676 INFO L168 Benchmark]: Toolchain (without parser) took 4864.93 ms. Allocated memory was 136.8 MB in the beginning and 315.6 MB in the end (delta: 178.8 MB). Free memory was 98.0 MB in the beginning and 160.4 MB in the end (delta: -62.4 MB). Peak memory consumption was 116.4 MB. Max. memory is 7.1 GB. [2020-10-16 13:51:47,677 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 136.8 MB. Free memory was 118.3 MB in the beginning and 118.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-16 13:51:47,677 INFO L168 Benchmark]: CACSL2BoogieTranslator took 776.94 ms. Allocated memory was 136.8 MB in the beginning and 220.7 MB in the end (delta: 83.9 MB). Free memory was 97.8 MB in the beginning and 185.6 MB in the end (delta: -87.8 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-10-16 13:51:47,678 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.77 ms. Allocated memory is still 220.7 MB. Free memory was 185.6 MB in the beginning and 183.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2020-10-16 13:51:47,679 INFO L168 Benchmark]: Boogie Preprocessor took 25.26 ms. Allocated memory is still 220.7 MB. Free memory was 183.7 MB in the beginning and 181.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2020-10-16 13:51:47,680 INFO L168 Benchmark]: RCFGBuilder took 443.92 ms. Allocated memory is still 220.7 MB. Free memory was 181.9 MB in the beginning and 156.8 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-10-16 13:51:47,681 INFO L168 Benchmark]: TraceAbstraction took 3569.31 ms. Allocated memory was 220.7 MB in the beginning and 315.6 MB in the end (delta: 94.9 MB). Free memory was 155.8 MB in the beginning and 160.4 MB in the end (delta: -4.5 MB). Peak memory consumption was 90.3 MB. Max. memory is 7.1 GB. [2020-10-16 13:51:47,684 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 136.8 MB. Free memory was 118.3 MB in the beginning and 118.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 776.94 ms. Allocated memory was 136.8 MB in the beginning and 220.7 MB in the end (delta: 83.9 MB). Free memory was 97.8 MB in the beginning and 185.6 MB in the end (delta: -87.8 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 43.77 ms. Allocated memory is still 220.7 MB. Free memory was 185.6 MB in the beginning and 183.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.26 ms. Allocated memory is still 220.7 MB. Free memory was 183.7 MB in the beginning and 181.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 443.92 ms. Allocated memory is still 220.7 MB. Free memory was 181.9 MB in the beginning and 156.8 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3569.31 ms. Allocated memory was 220.7 MB in the beginning and 315.6 MB in the end (delta: 94.9 MB). Free memory was 155.8 MB in the beginning and 160.4 MB in the end (delta: -4.5 MB). Peak memory consumption was 90.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1056 VarBasedMoverChecksPositive, 30 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 115 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 97 PlacesBefore, 41 PlacesAfterwards, 86 TransitionsBefore, 29 TransitionsAfterwards, 2016 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 68 TotalNumberOfCompositions, 4737 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 204 SDtfs, 225 SDslu, 297 SDs, 0 SdLazy, 51 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 123 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1450occurred 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: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 88 ConstructedInterpolants, 0 QuantifiedInterpolants, 3385 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...