/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.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 12:09:17,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 12:09:17,511 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 12:09:17,537 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 12:09:17,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 12:09:17,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 12:09:17,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 12:09:17,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 12:09:17,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 12:09:17,544 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 12:09:17,545 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 12:09:17,547 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 12:09:17,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 12:09:17,548 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 12:09:17,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 12:09:17,550 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 12:09:17,551 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 12:09:17,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 12:09:17,554 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 12:09:17,556 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 12:09:17,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 12:09:17,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 12:09:17,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 12:09:17,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 12:09:17,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 12:09:17,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 12:09:17,564 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 12:09:17,565 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 12:09:17,566 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 12:09:17,567 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 12:09:17,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 12:09:17,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 12:09:17,569 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 12:09:17,569 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 12:09:17,570 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 12:09:17,571 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 12:09:17,571 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 12:09:17,572 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 12:09:17,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 12:09:17,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 12:09:17,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 12:09:17,574 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.epf [2020-10-16 12:09:17,603 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 12:09:17,603 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 12:09:17,604 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 12:09:17,604 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 12:09:17,605 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 12:09:17,605 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 12:09:17,605 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 12:09:17,605 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 12:09:17,606 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 12:09:17,606 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 12:09:17,606 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 12:09:17,606 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 12:09:17,606 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 12:09:17,607 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 12:09:17,607 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 12:09:17,607 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 12:09:17,607 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 12:09:17,607 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 12:09:17,608 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 12:09:17,608 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 12:09:17,608 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 12:09:17,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:09:17,609 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 12:09:17,609 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 12:09:17,609 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 12:09:17,609 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 12:09:17,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 12:09:17,609 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 12:09:17,610 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 12:09:17,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 12:09:17,917 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 12:09:17,921 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 12:09:17,923 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 12:09:17,925 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 12:09:17,926 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i [2020-10-16 12:09:17,994 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82951b577/0390ce57ce01444283270104daa21c52/FLAG19ee1c18a [2020-10-16 12:09:18,574 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 12:09:18,575 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i [2020-10-16 12:09:18,588 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82951b577/0390ce57ce01444283270104daa21c52/FLAG19ee1c18a [2020-10-16 12:09:18,832 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82951b577/0390ce57ce01444283270104daa21c52 [2020-10-16 12:09:18,842 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 12:09:18,844 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 12:09:18,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 12:09:18,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 12:09:18,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 12:09:18,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:09:18" (1/1) ... [2020-10-16 12:09:18,853 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7305cb6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:18, skipping insertion in model container [2020-10-16 12:09:18,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:09:18" (1/1) ... [2020-10-16 12:09:18,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 12:09:18,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 12:09:19,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:09:19,391 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 12:09:19,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:09:19,646 INFO L208 MainTranslator]: Completed translation [2020-10-16 12:09:19,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:19 WrapperNode [2020-10-16 12:09:19,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 12:09:19,650 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 12:09:19,651 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 12:09:19,651 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 12:09:19,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:19" (1/1) ... [2020-10-16 12:09:19,702 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:19" (1/1) ... [2020-10-16 12:09:19,732 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 12:09:19,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 12:09:19,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 12:09:19,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 12:09:19,742 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:19" (1/1) ... [2020-10-16 12:09:19,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:19" (1/1) ... [2020-10-16 12:09:19,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:19" (1/1) ... [2020-10-16 12:09:19,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:19" (1/1) ... [2020-10-16 12:09:19,751 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:19" (1/1) ... [2020-10-16 12:09:19,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:19" (1/1) ... [2020-10-16 12:09:19,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:19" (1/1) ... [2020-10-16 12:09:19,758 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 12:09:19,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 12:09:19,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 12:09:19,759 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 12:09:19,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:19" (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 12:09:19,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 12:09:19,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 12:09:19,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 12:09:19,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 12:09:19,826 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 12:09:19,826 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 12:09:19,826 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 12:09:19,827 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 12:09:19,827 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 12:09:19,827 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 12:09:19,827 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-16 12:09:19,827 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-16 12:09:19,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 12:09:19,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 12:09:19,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 12:09:19,830 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 12:09:20,211 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 12:09:20,211 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 12:09:20,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:09:20 BoogieIcfgContainer [2020-10-16 12:09:20,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 12:09:20,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 12:09:20,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 12:09:20,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 12:09:20,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:09:18" (1/3) ... [2020-10-16 12:09:20,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c28e422 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:09:20, skipping insertion in model container [2020-10-16 12:09:20,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:19" (2/3) ... [2020-10-16 12:09:20,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c28e422 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:09:20, skipping insertion in model container [2020-10-16 12:09:20,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:09:20" (3/3) ... [2020-10-16 12:09:20,241 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc.i [2020-10-16 12:09:20,254 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 12:09:20,254 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 12:09:20,262 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 12:09:20,263 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 12:09:20,303 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:20,304 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:20,305 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:20,305 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:20,306 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:20,306 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:20,307 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:20,307 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:20,307 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:20,308 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:20,310 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:20,310 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:20,313 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:20,313 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:20,314 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:20,314 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:20,314 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:20,315 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:20,315 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:20,315 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:20,316 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:20,321 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:20,322 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:20,322 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:20,326 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:20,327 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:20,327 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:20,327 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:20,334 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:20,334 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:20,335 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:20,335 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:20,337 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:20,338 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:20,338 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:20,338 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:20,341 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:20,341 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:20,342 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:20,342 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:20,344 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 12:09:20,359 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-16 12:09:20,381 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:09:20,382 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:09:20,382 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:09:20,382 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 12:09:20,382 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:09:20,383 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:09:20,383 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:09:20,383 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:09:20,398 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:09:20,399 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 80 transitions, 180 flow [2020-10-16 12:09:20,402 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 80 transitions, 180 flow [2020-10-16 12:09:20,404 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-10-16 12:09:20,456 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-10-16 12:09:20,456 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 12:09:20,462 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. [2020-10-16 12:09:20,468 INFO L117 LiptonReduction]: Number of co-enabled transitions 1822 [2020-10-16 12:09:21,776 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-10-16 12:09:21,854 INFO L132 LiptonReduction]: Checked pairs total: 3057 [2020-10-16 12:09:21,854 INFO L134 LiptonReduction]: Total number of compositions: 63 [2020-10-16 12:09:21,862 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-10-16 12:09:21,920 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-10-16 12:09:21,923 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-10-16 12:09:21,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 12:09:21,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:21,935 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:21,935 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:21,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:21,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1118879254, now seen corresponding path program 1 times [2020-10-16 12:09:21,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:21,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622273057] [2020-10-16 12:09:21,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:22,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:22,128 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 12:09:22,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622273057] [2020-10-16 12:09:22,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:22,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:09:22,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259541172] [2020-10-16 12:09:22,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 12:09:22,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:22,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 12:09:22,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 12:09:22,158 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-10-16 12:09:22,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:22,240 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-10-16 12:09:22,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 12:09:22,244 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-16 12:09:22,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:22,284 INFO L225 Difference]: With dead ends: 850 [2020-10-16 12:09:22,285 INFO L226 Difference]: Without dead ends: 706 [2020-10-16 12:09:22,286 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 12:09:22,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-10-16 12:09:22,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-10-16 12:09:22,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-10-16 12:09:22,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-10-16 12:09:22,446 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-10-16 12:09:22,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:22,450 INFO L481 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-10-16 12:09:22,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 12:09:22,451 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-10-16 12:09:22,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:09:22,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:22,457 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:22,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 12:09:22,457 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:22,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:22,458 INFO L82 PathProgramCache]: Analyzing trace with hash -325524913, now seen corresponding path program 1 times [2020-10-16 12:09:22,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:22,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767230976] [2020-10-16 12:09:22,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:22,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:22,683 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 12:09:22,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767230976] [2020-10-16 12:09:22,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:22,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:09:22,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207565777] [2020-10-16 12:09:22,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:09:22,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:22,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:09:22,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:09:22,695 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-10-16 12:09:22,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:22,764 INFO L93 Difference]: Finished difference Result 802 states and 2662 transitions. [2020-10-16 12:09:22,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:09:22,766 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-16 12:09:22,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:22,773 INFO L225 Difference]: With dead ends: 802 [2020-10-16 12:09:22,773 INFO L226 Difference]: Without dead ends: 658 [2020-10-16 12:09:22,774 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 12:09:22,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-10-16 12:09:22,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2020-10-16 12:09:22,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2020-10-16 12:09:22,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 2230 transitions. [2020-10-16 12:09:22,807 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 2230 transitions. Word has length 11 [2020-10-16 12:09:22,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:22,807 INFO L481 AbstractCegarLoop]: Abstraction has 658 states and 2230 transitions. [2020-10-16 12:09:22,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:09:22,807 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 2230 transitions. [2020-10-16 12:09:22,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:09:22,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:22,814 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:22,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 12:09:22,815 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:22,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:22,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1502334909, now seen corresponding path program 1 times [2020-10-16 12:09:22,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:22,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124643637] [2020-10-16 12:09:22,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:22,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:22,918 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 12:09:22,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124643637] [2020-10-16 12:09:22,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:22,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:09:22,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631342266] [2020-10-16 12:09:22,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:09:22,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:22,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:09:22,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:09:22,921 INFO L87 Difference]: Start difference. First operand 658 states and 2230 transitions. Second operand 4 states. [2020-10-16 12:09:22,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:22,957 INFO L93 Difference]: Finished difference Result 738 states and 2404 transitions. [2020-10-16 12:09:22,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:09:22,958 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-16 12:09:22,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:22,963 INFO L225 Difference]: With dead ends: 738 [2020-10-16 12:09:22,964 INFO L226 Difference]: Without dead ends: 618 [2020-10-16 12:09:22,964 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 12:09:22,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-10-16 12:09:22,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 618. [2020-10-16 12:09:22,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2020-10-16 12:09:22,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 2058 transitions. [2020-10-16 12:09:22,989 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 2058 transitions. Word has length 12 [2020-10-16 12:09:22,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:22,989 INFO L481 AbstractCegarLoop]: Abstraction has 618 states and 2058 transitions. [2020-10-16 12:09:22,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:09:22,990 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 2058 transitions. [2020-10-16 12:09:22,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:09:22,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:22,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:22,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 12:09:22,992 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:22,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:22,992 INFO L82 PathProgramCache]: Analyzing trace with hash 672248787, now seen corresponding path program 1 times [2020-10-16 12:09:22,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:22,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212904485] [2020-10-16 12:09:22,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:23,085 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 12:09:23,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212904485] [2020-10-16 12:09:23,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:23,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:09:23,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138944277] [2020-10-16 12:09:23,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:09:23,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:23,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:09:23,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:09:23,088 INFO L87 Difference]: Start difference. First operand 618 states and 2058 transitions. Second operand 4 states. [2020-10-16 12:09:23,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:23,118 INFO L93 Difference]: Finished difference Result 658 states and 2130 transitions. [2020-10-16 12:09:23,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:09:23,119 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-16 12:09:23,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:23,123 INFO L225 Difference]: With dead ends: 658 [2020-10-16 12:09:23,123 INFO L226 Difference]: Without dead ends: 578 [2020-10-16 12:09:23,124 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 12:09:23,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-10-16 12:09:23,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2020-10-16 12:09:23,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-10-16 12:09:23,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 1906 transitions. [2020-10-16 12:09:23,145 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 1906 transitions. Word has length 13 [2020-10-16 12:09:23,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:23,145 INFO L481 AbstractCegarLoop]: Abstraction has 578 states and 1906 transitions. [2020-10-16 12:09:23,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:09:23,145 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 1906 transitions. [2020-10-16 12:09:23,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:09:23,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:23,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:23,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 12:09:23,147 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:23,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:23,148 INFO L82 PathProgramCache]: Analyzing trace with hash -488944074, now seen corresponding path program 1 times [2020-10-16 12:09:23,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:23,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71302562] [2020-10-16 12:09:23,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:23,228 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 12:09:23,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71302562] [2020-10-16 12:09:23,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:23,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:09:23,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821780073] [2020-10-16 12:09:23,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:09:23,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:23,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:09:23,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:09:23,231 INFO L87 Difference]: Start difference. First operand 578 states and 1906 transitions. Second operand 5 states. [2020-10-16 12:09:23,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:23,309 INFO L93 Difference]: Finished difference Result 874 states and 2856 transitions. [2020-10-16 12:09:23,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:09:23,310 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-16 12:09:23,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:23,314 INFO L225 Difference]: With dead ends: 874 [2020-10-16 12:09:23,314 INFO L226 Difference]: Without dead ends: 482 [2020-10-16 12:09:23,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:09:23,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2020-10-16 12:09:23,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 482. [2020-10-16 12:09:23,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2020-10-16 12:09:23,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 1564 transitions. [2020-10-16 12:09:23,331 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 1564 transitions. Word has length 14 [2020-10-16 12:09:23,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:23,331 INFO L481 AbstractCegarLoop]: Abstraction has 482 states and 1564 transitions. [2020-10-16 12:09:23,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:09:23,332 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 1564 transitions. [2020-10-16 12:09:23,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:09:23,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:23,333 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:23,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 12:09:23,333 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:23,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:23,334 INFO L82 PathProgramCache]: Analyzing trace with hash -669040336, now seen corresponding path program 2 times [2020-10-16 12:09:23,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:23,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301993860] [2020-10-16 12:09:23,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:23,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:23,377 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 12:09:23,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301993860] [2020-10-16 12:09:23,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:23,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:09:23,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465678163] [2020-10-16 12:09:23,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:09:23,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:23,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:09:23,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:09:23,380 INFO L87 Difference]: Start difference. First operand 482 states and 1564 transitions. Second operand 4 states. [2020-10-16 12:09:23,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:23,403 INFO L93 Difference]: Finished difference Result 514 states and 1620 transitions. [2020-10-16 12:09:23,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:09:23,403 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-16 12:09:23,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:23,407 INFO L225 Difference]: With dead ends: 514 [2020-10-16 12:09:23,407 INFO L226 Difference]: Without dead ends: 450 [2020-10-16 12:09:23,407 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 12:09:23,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2020-10-16 12:09:23,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 450. [2020-10-16 12:09:23,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-10-16 12:09:23,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1444 transitions. [2020-10-16 12:09:23,427 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1444 transitions. Word has length 14 [2020-10-16 12:09:23,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:23,427 INFO L481 AbstractCegarLoop]: Abstraction has 450 states and 1444 transitions. [2020-10-16 12:09:23,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:09:23,428 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1444 transitions. [2020-10-16 12:09:23,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:09:23,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:23,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:23,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 12:09:23,430 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:23,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:23,431 INFO L82 PathProgramCache]: Analyzing trace with hash -453774883, now seen corresponding path program 1 times [2020-10-16 12:09:23,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:23,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973584980] [2020-10-16 12:09:23,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:23,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:23,484 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 12:09:23,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973584980] [2020-10-16 12:09:23,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:23,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:09:23,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433861451] [2020-10-16 12:09:23,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:09:23,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:23,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:09:23,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:09:23,486 INFO L87 Difference]: Start difference. First operand 450 states and 1444 transitions. Second operand 4 states. [2020-10-16 12:09:23,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:23,524 INFO L93 Difference]: Finished difference Result 658 states and 2016 transitions. [2020-10-16 12:09:23,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:09:23,525 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-16 12:09:23,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:23,530 INFO L225 Difference]: With dead ends: 658 [2020-10-16 12:09:23,530 INFO L226 Difference]: Without dead ends: 482 [2020-10-16 12:09:23,531 INFO L677 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 [2020-10-16 12:09:23,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2020-10-16 12:09:23,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 418. [2020-10-16 12:09:23,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-10-16 12:09:23,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 1276 transitions. [2020-10-16 12:09:23,551 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 1276 transitions. Word has length 15 [2020-10-16 12:09:23,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:23,552 INFO L481 AbstractCegarLoop]: Abstraction has 418 states and 1276 transitions. [2020-10-16 12:09:23,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:09:23,552 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 1276 transitions. [2020-10-16 12:09:23,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:09:23,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:23,555 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:23,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 12:09:23,555 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:23,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:23,556 INFO L82 PathProgramCache]: Analyzing trace with hash -99110680, now seen corresponding path program 1 times [2020-10-16 12:09:23,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:23,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899573311] [2020-10-16 12:09:23,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:23,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:23,601 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 12:09:23,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899573311] [2020-10-16 12:09:23,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:23,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:09:23,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715001493] [2020-10-16 12:09:23,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:09:23,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:23,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:09:23,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:09:23,604 INFO L87 Difference]: Start difference. First operand 418 states and 1276 transitions. Second operand 4 states. [2020-10-16 12:09:23,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:23,639 INFO L93 Difference]: Finished difference Result 598 states and 1736 transitions. [2020-10-16 12:09:23,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:09:23,640 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-16 12:09:23,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:23,645 INFO L225 Difference]: With dead ends: 598 [2020-10-16 12:09:23,646 INFO L226 Difference]: Without dead ends: 442 [2020-10-16 12:09:23,646 INFO L677 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 [2020-10-16 12:09:23,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-10-16 12:09:23,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 394. [2020-10-16 12:09:23,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-10-16 12:09:23,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1140 transitions. [2020-10-16 12:09:23,665 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1140 transitions. Word has length 15 [2020-10-16 12:09:23,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:23,665 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 1140 transitions. [2020-10-16 12:09:23,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:09:23,666 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1140 transitions. [2020-10-16 12:09:23,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:09:23,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:23,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:23,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 12:09:23,667 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:23,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:23,668 INFO L82 PathProgramCache]: Analyzing trace with hash -96752386, now seen corresponding path program 1 times [2020-10-16 12:09:23,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:23,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111760856] [2020-10-16 12:09:23,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:23,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:23,722 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 12:09:23,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111760856] [2020-10-16 12:09:23,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:23,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:09:23,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949582450] [2020-10-16 12:09:23,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:09:23,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:23,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:09:23,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:09:23,725 INFO L87 Difference]: Start difference. First operand 394 states and 1140 transitions. Second operand 5 states. [2020-10-16 12:09:23,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:23,771 INFO L93 Difference]: Finished difference Result 542 states and 1518 transitions. [2020-10-16 12:09:23,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:09:23,772 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-16 12:09:23,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:23,775 INFO L225 Difference]: With dead ends: 542 [2020-10-16 12:09:23,775 INFO L226 Difference]: Without dead ends: 254 [2020-10-16 12:09:23,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:09:23,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-16 12:09:23,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2020-10-16 12:09:23,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-16 12:09:23,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 691 transitions. [2020-10-16 12:09:23,788 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 691 transitions. Word has length 15 [2020-10-16 12:09:23,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:23,788 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 691 transitions. [2020-10-16 12:09:23,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:09:23,788 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 691 transitions. [2020-10-16 12:09:23,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:09:23,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:23,789 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:23,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 12:09:23,790 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:23,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:23,790 INFO L82 PathProgramCache]: Analyzing trace with hash 807678122, now seen corresponding path program 2 times [2020-10-16 12:09:23,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:23,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560409840] [2020-10-16 12:09:23,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:23,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:23,829 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 12:09:23,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560409840] [2020-10-16 12:09:23,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:23,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:09:23,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046474730] [2020-10-16 12:09:23,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:09:23,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:23,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:09:23,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:09:23,831 INFO L87 Difference]: Start difference. First operand 254 states and 691 transitions. Second operand 4 states. [2020-10-16 12:09:23,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:23,868 INFO L93 Difference]: Finished difference Result 302 states and 756 transitions. [2020-10-16 12:09:23,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:09:23,868 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-16 12:09:23,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:23,871 INFO L225 Difference]: With dead ends: 302 [2020-10-16 12:09:23,871 INFO L226 Difference]: Without dead ends: 229 [2020-10-16 12:09:23,872 INFO L677 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 [2020-10-16 12:09:23,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-16 12:09:23,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2020-10-16 12:09:23,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-16 12:09:23,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 581 transitions. [2020-10-16 12:09:23,881 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 581 transitions. Word has length 15 [2020-10-16 12:09:23,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:23,881 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 581 transitions. [2020-10-16 12:09:23,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:09:23,881 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 581 transitions. [2020-10-16 12:09:23,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-16 12:09:23,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:23,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:23,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 12:09:23,883 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:23,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:23,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1481069530, now seen corresponding path program 1 times [2020-10-16 12:09:23,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:23,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012497645] [2020-10-16 12:09:23,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:23,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:23,923 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 12:09:23,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012497645] [2020-10-16 12:09:23,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:23,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 12:09:23,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400568184] [2020-10-16 12:09:23,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:09:23,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:23,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:09:23,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:09:23,926 INFO L87 Difference]: Start difference. First operand 229 states and 581 transitions. Second operand 5 states. [2020-10-16 12:09:23,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:23,972 INFO L93 Difference]: Finished difference Result 227 states and 514 transitions. [2020-10-16 12:09:23,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 12:09:23,972 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-16 12:09:23,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:23,974 INFO L225 Difference]: With dead ends: 227 [2020-10-16 12:09:23,974 INFO L226 Difference]: Without dead ends: 171 [2020-10-16 12:09:23,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 12:09:23,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-16 12:09:23,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-10-16 12:09:23,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-16 12:09:23,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 378 transitions. [2020-10-16 12:09:23,982 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 378 transitions. Word has length 16 [2020-10-16 12:09:23,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:23,982 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 378 transitions. [2020-10-16 12:09:23,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:09:23,982 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 378 transitions. [2020-10-16 12:09:23,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 12:09:23,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:23,983 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:23,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-16 12:09:23,984 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:23,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:23,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1331262194, now seen corresponding path program 1 times [2020-10-16 12:09:23,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:23,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757410308] [2020-10-16 12:09:23,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:23,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:24,060 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 12:09:24,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757410308] [2020-10-16 12:09:24,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:24,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 12:09:24,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246660491] [2020-10-16 12:09:24,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 12:09:24,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:24,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 12:09:24,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 12:09:24,063 INFO L87 Difference]: Start difference. First operand 171 states and 378 transitions. Second operand 6 states. [2020-10-16 12:09:24,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:24,127 INFO L93 Difference]: Finished difference Result 147 states and 307 transitions. [2020-10-16 12:09:24,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 12:09:24,128 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-16 12:09:24,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:24,129 INFO L225 Difference]: With dead ends: 147 [2020-10-16 12:09:24,129 INFO L226 Difference]: Without dead ends: 107 [2020-10-16 12:09:24,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:09:24,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-16 12:09:24,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-10-16 12:09:24,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-16 12:09:24,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 217 transitions. [2020-10-16 12:09:24,136 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 217 transitions. Word has length 17 [2020-10-16 12:09:24,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:24,137 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 217 transitions. [2020-10-16 12:09:24,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 12:09:24,137 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 217 transitions. [2020-10-16 12:09:24,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 12:09:24,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:24,138 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:24,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-16 12:09:24,138 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:24,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:24,139 INFO L82 PathProgramCache]: Analyzing trace with hash 461519417, now seen corresponding path program 1 times [2020-10-16 12:09:24,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:24,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601276712] [2020-10-16 12:09:24,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:24,214 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 12:09:24,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601276712] [2020-10-16 12:09:24,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:24,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 12:09:24,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250554101] [2020-10-16 12:09:24,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:09:24,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:24,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:09:24,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:09:24,217 INFO L87 Difference]: Start difference. First operand 107 states and 217 transitions. Second operand 5 states. [2020-10-16 12:09:24,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:24,256 INFO L93 Difference]: Finished difference Result 121 states and 234 transitions. [2020-10-16 12:09:24,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 12:09:24,256 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-16 12:09:24,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:24,257 INFO L225 Difference]: With dead ends: 121 [2020-10-16 12:09:24,257 INFO L226 Difference]: Without dead ends: 105 [2020-10-16 12:09:24,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:09:24,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-16 12:09:24,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2020-10-16 12:09:24,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-16 12:09:24,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 205 transitions. [2020-10-16 12:09:24,264 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 205 transitions. Word has length 19 [2020-10-16 12:09:24,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:24,264 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 205 transitions. [2020-10-16 12:09:24,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:09:24,264 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 205 transitions. [2020-10-16 12:09:24,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 12:09:24,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:24,265 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:24,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-16 12:09:24,265 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:24,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:24,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1319799301, now seen corresponding path program 2 times [2020-10-16 12:09:24,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:24,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099537704] [2020-10-16 12:09:24,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:24,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:24,345 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 12:09:24,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099537704] [2020-10-16 12:09:24,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:24,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-16 12:09:24,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547593208] [2020-10-16 12:09:24,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 12:09:24,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:24,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 12:09:24,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:09:24,347 INFO L87 Difference]: Start difference. First operand 103 states and 205 transitions. Second operand 7 states. [2020-10-16 12:09:24,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:24,397 INFO L93 Difference]: Finished difference Result 93 states and 190 transitions. [2020-10-16 12:09:24,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 12:09:24,397 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 12:09:24,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:24,398 INFO L225 Difference]: With dead ends: 93 [2020-10-16 12:09:24,398 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 12:09:24,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-16 12:09:24,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 12:09:24,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 12:09:24,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 12:09:24,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 12:09:24,400 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-10-16 12:09:24,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:24,400 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 12:09:24,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 12:09:24,401 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 12:09:24,401 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 12:09:24,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-16 12:09:24,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:09:24 BasicIcfg [2020-10-16 12:09:24,406 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 12:09:24,408 INFO L168 Benchmark]: Toolchain (without parser) took 5564.21 ms. Allocated memory was 138.9 MB in the beginning and 294.6 MB in the end (delta: 155.7 MB). Free memory was 101.0 MB in the beginning and 218.0 MB in the end (delta: -117.0 MB). Peak memory consumption was 38.7 MB. Max. memory is 7.1 GB. [2020-10-16 12:09:24,409 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 12:09:24,410 INFO L168 Benchmark]: CACSL2BoogieTranslator took 803.75 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 100.8 MB in the beginning and 160.1 MB in the end (delta: -59.3 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. [2020-10-16 12:09:24,415 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.73 ms. Allocated memory is still 202.4 MB. Free memory was 160.1 MB in the beginning and 158.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 12:09:24,422 INFO L168 Benchmark]: Boogie Preprocessor took 25.18 ms. Allocated memory is still 202.4 MB. Free memory was 158.1 MB in the beginning and 156.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-16 12:09:24,423 INFO L168 Benchmark]: RCFGBuilder took 461.34 ms. Allocated memory is still 202.4 MB. Free memory was 156.7 MB in the beginning and 132.6 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-10-16 12:09:24,424 INFO L168 Benchmark]: TraceAbstraction took 4184.37 ms. Allocated memory was 202.4 MB in the beginning and 294.6 MB in the end (delta: 92.3 MB). Free memory was 131.9 MB in the beginning and 218.0 MB in the end (delta: -86.1 MB). Peak memory consumption was 6.2 MB. Max. memory is 7.1 GB. [2020-10-16 12:09:24,427 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 803.75 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 100.8 MB in the beginning and 160.1 MB in the end (delta: -59.3 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 82.73 ms. Allocated memory is still 202.4 MB. Free memory was 160.1 MB in the beginning and 158.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.18 ms. Allocated memory is still 202.4 MB. Free memory was 158.1 MB in the beginning and 156.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 461.34 ms. Allocated memory is still 202.4 MB. Free memory was 156.7 MB in the beginning and 132.6 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4184.37 ms. Allocated memory was 202.4 MB in the beginning and 294.6 MB in the end (delta: 92.3 MB). Free memory was 131.9 MB in the beginning and 218.0 MB in the end (delta: -86.1 MB). Peak memory consumption was 6.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 940 VarBasedMoverChecksPositive, 22 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 76 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 91 PlacesBefore, 39 PlacesAfterwards, 80 TransitionsBefore, 27 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 63 TotalNumberOfCompositions, 3057 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, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 14, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 372 SDtfs, 333 SDslu, 596 SDs, 0 SdLazy, 225 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s 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, 14 MinimizatonAttempts, 114 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 205 NumberOfCodeBlocks, 205 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 191 ConstructedInterpolants, 0 QuantifiedInterpolants, 7625 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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...