/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-lit/fkp2013-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 13:52:00,411 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 13:52:00,413 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 13:52:00,438 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 13:52:00,439 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 13:52:00,440 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 13:52:00,441 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 13:52:00,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 13:52:00,445 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 13:52:00,446 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 13:52:00,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 13:52:00,448 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 13:52:00,448 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 13:52:00,449 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 13:52:00,450 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 13:52:00,452 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 13:52:00,452 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 13:52:00,453 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 13:52:00,455 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 13:52:00,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 13:52:00,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 13:52:00,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 13:52:00,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 13:52:00,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 13:52:00,465 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 13:52:00,468 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 13:52:00,469 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 13:52:00,470 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 13:52:00,470 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 13:52:00,472 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 13:52:00,472 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 13:52:00,472 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 13:52:00,473 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 13:52:00,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 13:52:00,474 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 13:52:00,474 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 13:52:00,475 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-16 13:52:00,499 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 13:52:00,499 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 13:52:00,500 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 13:52:00,500 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 13:52:00,501 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 13:52:00,501 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 13:52:00,501 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 13:52:00,501 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 13:52:00,502 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 13:52:00,502 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 13:52:00,502 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 13:52:00,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 13:52:00,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 13:52:00,503 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 13:52:00,503 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 13:52:00,503 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 13:52:00,503 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 13:52:00,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 13:52:00,504 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 13:52:00,504 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 13:52:00,504 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 13:52:00,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 13:52:00,505 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 13:52:00,505 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 13:52:00,505 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 13:52:00,505 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 13:52:00,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 13:52:00,506 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 13:52:00,506 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 13:52:00,506 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 13:52:00,506 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 13:52:00,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 13:52:00,820 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 13:52:00,823 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 13:52:00,825 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 13:52:00,826 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 13:52:00,826 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/fkp2013-2.i [2020-10-16 13:52:00,890 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8c4f4512/96b8696964f94fae80c0312481d784f7/FLAGc8fcdc272 [2020-10-16 13:52:01,410 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 13:52:01,411 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-lit/fkp2013-2.i [2020-10-16 13:52:01,434 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8c4f4512/96b8696964f94fae80c0312481d784f7/FLAGc8fcdc272 [2020-10-16 13:52:01,703 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8c4f4512/96b8696964f94fae80c0312481d784f7 [2020-10-16 13:52:01,713 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 13:52:01,716 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 13:52:01,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 13:52:01,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 13:52:01,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 13:52:01,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:52:01" (1/1) ... [2020-10-16 13:52:01,726 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1af4dac7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:52:01, skipping insertion in model container [2020-10-16 13:52:01,726 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:52:01" (1/1) ... [2020-10-16 13:52:01,735 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 13:52:01,797 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 13:52:02,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:52:02,223 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 13:52:02,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:52:02,332 INFO L208 MainTranslator]: Completed translation [2020-10-16 13:52:02,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:52:02 WrapperNode [2020-10-16 13:52:02,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 13:52:02,333 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 13:52:02,334 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 13:52:02,334 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 13:52:02,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:52:02" (1/1) ... [2020-10-16 13:52:02,359 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:52:02" (1/1) ... [2020-10-16 13:52:02,383 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 13:52:02,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 13:52:02,383 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 13:52:02,384 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 13:52:02,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:52:02" (1/1) ... [2020-10-16 13:52:02,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:52:02" (1/1) ... [2020-10-16 13:52:02,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:52:02" (1/1) ... [2020-10-16 13:52:02,397 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:52:02" (1/1) ... [2020-10-16 13:52:02,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:52:02" (1/1) ... [2020-10-16 13:52:02,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:52:02" (1/1) ... [2020-10-16 13:52:02,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:52:02" (1/1) ... [2020-10-16 13:52:02,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 13:52:02,412 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 13:52:02,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 13:52:02,413 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 13:52:02,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:52:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 13:52:02,482 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-16 13:52:02,482 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-16 13:52:02,483 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 13:52:02,483 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 13:52:02,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 13:52:02,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 13:52:02,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 13:52:02,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 13:52:02,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 13:52:02,486 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 13:52:02,801 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 13:52:02,802 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-16 13:52:02,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:52:02 BoogieIcfgContainer [2020-10-16 13:52:02,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 13:52:02,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 13:52:02,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 13:52:02,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 13:52:02,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:52:01" (1/3) ... [2020-10-16 13:52:02,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30fe68c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:52:02, skipping insertion in model container [2020-10-16 13:52:02,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:52:02" (2/3) ... [2020-10-16 13:52:02,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30fe68c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:52:02, skipping insertion in model container [2020-10-16 13:52:02,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:52:02" (3/3) ... [2020-10-16 13:52:02,815 INFO L111 eAbstractionObserver]: Analyzing ICFG fkp2013-2.i [2020-10-16 13:52:02,842 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 13:52:02,842 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 13:52:02,851 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 13:52:02,852 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 13:52:02,881 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:02,881 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:02,881 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:02,882 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:02,882 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:02,883 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:02,883 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:02,884 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:02,884 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:02,885 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:02,885 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:02,885 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:02,886 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:02,886 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:02,886 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:02,887 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:02,887 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:02,887 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:02,888 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:02,888 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:02,888 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:02,893 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:02,893 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:02,894 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:02,894 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:02,894 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:02,900 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:02,901 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:02,901 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:02,901 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:02,901 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:02,902 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:02,904 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 13:52:02,919 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 13:52:02,941 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 13:52:02,942 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 13:52:02,942 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 13:52:02,942 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 13:52:02,942 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 13:52:02,942 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 13:52:02,943 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 13:52:02,943 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 13:52:02,956 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 13:52:02,957 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 51 transitions, 112 flow [2020-10-16 13:52:02,960 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 51 transitions, 112 flow [2020-10-16 13:52:02,963 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 55 places, 51 transitions, 112 flow [2020-10-16 13:52:03,008 INFO L129 PetriNetUnfolder]: 3/61 cut-off events. [2020-10-16 13:52:03,008 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 13:52:03,014 INFO L80 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 61 events. 3/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 100 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 49. Up to 4 conditions per place. [2020-10-16 13:52:03,016 INFO L117 LiptonReduction]: Number of co-enabled transitions 692 [2020-10-16 13:52:04,110 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-16 13:52:04,194 INFO L132 LiptonReduction]: Checked pairs total: 670 [2020-10-16 13:52:04,195 INFO L134 LiptonReduction]: Total number of compositions: 47 [2020-10-16 13:52:04,203 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 12 transitions, 34 flow [2020-10-16 13:52:04,215 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-16 13:52:04,218 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-16 13:52:04,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-16 13:52:04,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:04,226 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-16 13:52:04,227 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 13:52:04,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:04,233 INFO L82 PathProgramCache]: Analyzing trace with hash 208056, now seen corresponding path program 1 times [2020-10-16 13:52:04,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:04,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288227413] [2020-10-16 13:52:04,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:04,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:04,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:52:04,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288227413] [2020-10-16 13:52:04,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:52:04,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 13:52:04,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [829569944] [2020-10-16 13:52:04,447 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:04,449 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:04,463 INFO L258 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-10-16 13:52:04,463 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:04,468 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:04,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:52:04,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:04,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:52:04,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:52:04,487 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-10-16 13:52:04,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:04,509 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2020-10-16 13:52:04,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:52:04,511 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-16 13:52:04,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:04,520 INFO L225 Difference]: With dead ends: 35 [2020-10-16 13:52:04,520 INFO L226 Difference]: Without dead ends: 31 [2020-10-16 13:52:04,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:52:04,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-16 13:52:04,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-16 13:52:04,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-16 13:52:04,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2020-10-16 13:52:04,561 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 51 transitions. Word has length 3 [2020-10-16 13:52:04,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:04,561 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 51 transitions. [2020-10-16 13:52:04,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:52:04,562 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2020-10-16 13:52:04,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-16 13:52:04,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:04,562 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:04,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 13:52:04,563 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 13:52:04,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:04,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1139052385, now seen corresponding path program 1 times [2020-10-16 13:52:04,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:04,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720035943] [2020-10-16 13:52:04,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:04,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:04,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:52:04,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720035943] [2020-10-16 13:52:04,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:52:04,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:52:04,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1347197583] [2020-10-16 13:52:04,671 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:04,672 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:04,675 INFO L258 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2020-10-16 13:52:04,675 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:04,676 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:04,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:52:04,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:04,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:52:04,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:52:04,678 INFO L87 Difference]: Start difference. First operand 31 states and 51 transitions. Second operand 4 states. [2020-10-16 13:52:04,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:04,691 INFO L93 Difference]: Finished difference Result 26 states and 42 transitions. [2020-10-16 13:52:04,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 13:52:04,692 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-16 13:52:04,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:04,693 INFO L225 Difference]: With dead ends: 26 [2020-10-16 13:52:04,693 INFO L226 Difference]: Without dead ends: 24 [2020-10-16 13:52:04,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:52:04,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-16 13:52:04,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-16 13:52:04,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-16 13:52:04,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 39 transitions. [2020-10-16 13:52:04,699 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 39 transitions. Word has length 7 [2020-10-16 13:52:04,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:04,699 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 39 transitions. [2020-10-16 13:52:04,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:52:04,699 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 39 transitions. [2020-10-16 13:52:04,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 13:52:04,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:04,700 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:04,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 13:52:04,700 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 13:52:04,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:04,701 INFO L82 PathProgramCache]: Analyzing trace with hash -950894116, now seen corresponding path program 1 times [2020-10-16 13:52:04,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:04,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896612429] [2020-10-16 13:52:04,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:04,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 13:52:04,728 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 13:52:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 13:52:04,742 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 13:52:04,766 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 13:52:04,766 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 13:52:04,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 13:52:04,768 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 13:52:04,768 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-16 13:52:04,778 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,778 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,778 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,779 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,779 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,779 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,779 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,779 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,780 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,780 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,780 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,780 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,780 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,781 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,781 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,781 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,781 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,781 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,782 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,782 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,782 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,783 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,783 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,783 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,783 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,783 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,783 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,784 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,784 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,784 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,785 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,785 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,785 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,785 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,785 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,785 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,786 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,786 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,786 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,786 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,787 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,787 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,787 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,788 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,788 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,788 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,788 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,792 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,792 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,792 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,792 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,792 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,794 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,795 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,795 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,795 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,795 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,795 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,799 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,800 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,800 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,800 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,800 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,801 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:04,802 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 13:52:04,802 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-16 13:52:04,803 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 13:52:04,803 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 13:52:04,803 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 13:52:04,803 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 13:52:04,803 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 13:52:04,804 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 13:52:04,804 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 13:52:04,804 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 13:52:04,807 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 13:52:04,807 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 69 transitions, 162 flow [2020-10-16 13:52:04,807 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 69 transitions, 162 flow [2020-10-16 13:52:04,808 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 69 transitions, 162 flow [2020-10-16 13:52:04,828 INFO L129 PetriNetUnfolder]: 4/83 cut-off events. [2020-10-16 13:52:04,828 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 13:52:04,829 INFO L80 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 83 events. 4/83 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 141 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 92. Up to 6 conditions per place. [2020-10-16 13:52:04,832 INFO L117 LiptonReduction]: Number of co-enabled transitions 1108 [2020-10-16 13:52:05,853 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-16 13:52:05,909 INFO L132 LiptonReduction]: Checked pairs total: 1240 [2020-10-16 13:52:05,910 INFO L134 LiptonReduction]: Total number of compositions: 62 [2020-10-16 13:52:05,910 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 66 flow [2020-10-16 13:52:05,922 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 224 states. [2020-10-16 13:52:05,922 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states. [2020-10-16 13:52:05,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-16 13:52:05,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:05,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-16 13:52:05,923 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:05,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:05,924 INFO L82 PathProgramCache]: Analyzing trace with hash 354555, now seen corresponding path program 1 times [2020-10-16 13:52:05,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:05,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371136322] [2020-10-16 13:52:05,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:05,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:52:05,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371136322] [2020-10-16 13:52:05,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:52:05,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 13:52:05,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [915362546] [2020-10-16 13:52:05,960 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:05,961 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:05,961 INFO L258 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-10-16 13:52:05,962 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:05,962 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:05,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:52:05,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:05,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:52:05,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:52:05,963 INFO L87 Difference]: Start difference. First operand 224 states. Second operand 3 states. [2020-10-16 13:52:05,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:05,988 INFO L93 Difference]: Finished difference Result 185 states and 459 transitions. [2020-10-16 13:52:05,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:52:05,989 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-16 13:52:05,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:05,994 INFO L225 Difference]: With dead ends: 185 [2020-10-16 13:52:05,994 INFO L226 Difference]: Without dead ends: 171 [2020-10-16 13:52:05,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:52:05,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-16 13:52:06,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-10-16 13:52:06,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-16 13:52:06,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 418 transitions. [2020-10-16 13:52:06,026 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 418 transitions. Word has length 3 [2020-10-16 13:52:06,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:06,026 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 418 transitions. [2020-10-16 13:52:06,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:52:06,027 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 418 transitions. [2020-10-16 13:52:06,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 13:52:06,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:06,028 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:06,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 13:52:06,028 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:06,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:06,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1106209149, now seen corresponding path program 1 times [2020-10-16 13:52:06,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:06,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072382073] [2020-10-16 13:52:06,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:06,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:06,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:52:06,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072382073] [2020-10-16 13:52:06,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:52:06,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:52:06,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1397324693] [2020-10-16 13:52:06,109 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:06,110 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:06,112 INFO L258 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-16 13:52:06,113 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:06,113 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:06,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:52:06,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:06,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:52:06,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:52:06,114 INFO L87 Difference]: Start difference. First operand 171 states and 418 transitions. Second operand 5 states. [2020-10-16 13:52:06,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:06,170 INFO L93 Difference]: Finished difference Result 205 states and 460 transitions. [2020-10-16 13:52:06,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:52:06,171 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-16 13:52:06,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:06,175 INFO L225 Difference]: With dead ends: 205 [2020-10-16 13:52:06,176 INFO L226 Difference]: Without dead ends: 201 [2020-10-16 13:52:06,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:52:06,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-16 13:52:06,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 162. [2020-10-16 13:52:06,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-16 13:52:06,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 399 transitions. [2020-10-16 13:52:06,200 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 399 transitions. Word has length 9 [2020-10-16 13:52:06,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:06,200 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 399 transitions. [2020-10-16 13:52:06,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:52:06,200 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 399 transitions. [2020-10-16 13:52:06,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 13:52:06,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:06,202 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:06,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 13:52:06,202 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:06,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:06,202 INFO L82 PathProgramCache]: Analyzing trace with hash 583411714, now seen corresponding path program 1 times [2020-10-16 13:52:06,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:06,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172064067] [2020-10-16 13:52:06,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:06,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 13:52:06,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172064067] [2020-10-16 13:52:06,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:52:06,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:52:06,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [219928204] [2020-10-16 13:52:06,250 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:06,251 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:06,253 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-10-16 13:52:06,253 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:06,254 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:06,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:52:06,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:06,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:52:06,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:52:06,255 INFO L87 Difference]: Start difference. First operand 162 states and 399 transitions. Second operand 5 states. [2020-10-16 13:52:06,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:06,315 INFO L93 Difference]: Finished difference Result 189 states and 423 transitions. [2020-10-16 13:52:06,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:52:06,317 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 13:52:06,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:06,319 INFO L225 Difference]: With dead ends: 189 [2020-10-16 13:52:06,320 INFO L226 Difference]: Without dead ends: 185 [2020-10-16 13:52:06,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:52:06,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-16 13:52:06,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 153. [2020-10-16 13:52:06,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-16 13:52:06,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 367 transitions. [2020-10-16 13:52:06,334 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 367 transitions. Word has length 13 [2020-10-16 13:52:06,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:06,335 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 367 transitions. [2020-10-16 13:52:06,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:52:06,336 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 367 transitions. [2020-10-16 13:52:06,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 13:52:06,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:06,337 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:06,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 13:52:06,338 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:06,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:06,338 INFO L82 PathProgramCache]: Analyzing trace with hash 903154619, now seen corresponding path program 1 times [2020-10-16 13:52:06,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:06,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328554230] [2020-10-16 13:52:06,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:06,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 13:52:06,355 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 13:52:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 13:52:06,366 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 13:52:06,373 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 13:52:06,373 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 13:52:06,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 13:52:06,374 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 13:52:06,375 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-16 13:52:06,386 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,386 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,386 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,386 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,387 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,387 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,387 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,388 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,388 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,388 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,389 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,389 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,389 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,390 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,391 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,391 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,391 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,391 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,391 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,392 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,392 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,392 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,392 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,392 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,392 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,393 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,393 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,394 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,394 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,394 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,395 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,395 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,395 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,395 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,395 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,395 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,395 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,399 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,399 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,399 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,400 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,400 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,400 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,400 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,400 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,400 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,401 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,401 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,401 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,401 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,401 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,402 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,402 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,402 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,402 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,402 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,402 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,403 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,403 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,403 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,403 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,403 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,404 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,404 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,404 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,404 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,405 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,405 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,408 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,409 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,409 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,409 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,409 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,411 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,411 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,411 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,411 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,411 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,412 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,413 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,413 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,413 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,413 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,413 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,415 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,415 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,415 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,415 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,415 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,416 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,417 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,417 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,417 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,417 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,418 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,418 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:06,419 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 13:52:06,419 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-16 13:52:06,419 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 13:52:06,420 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 13:52:06,420 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 13:52:06,420 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 13:52:06,420 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 13:52:06,420 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 13:52:06,420 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 13:52:06,420 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 13:52:06,423 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 13:52:06,423 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 87 transitions, 216 flow [2020-10-16 13:52:06,423 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 87 transitions, 216 flow [2020-10-16 13:52:06,424 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 87 transitions, 216 flow [2020-10-16 13:52:06,446 INFO L129 PetriNetUnfolder]: 5/105 cut-off events. [2020-10-16 13:52:06,446 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 13:52:06,448 INFO L80 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 105 events. 5/105 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 187 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 119. Up to 8 conditions per place. [2020-10-16 13:52:06,451 INFO L117 LiptonReduction]: Number of co-enabled transitions 1608 [2020-10-16 13:52:07,724 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-10-16 13:52:07,893 INFO L132 LiptonReduction]: Checked pairs total: 2157 [2020-10-16 13:52:07,894 INFO L134 LiptonReduction]: Total number of compositions: 77 [2020-10-16 13:52:07,894 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 27 transitions, 96 flow [2020-10-16 13:52:07,923 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 683 states. [2020-10-16 13:52:07,924 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states. [2020-10-16 13:52:07,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-16 13:52:07,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:07,924 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-16 13:52:07,925 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:07,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:07,925 INFO L82 PathProgramCache]: Analyzing trace with hash 535749, now seen corresponding path program 1 times [2020-10-16 13:52:07,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:07,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420776079] [2020-10-16 13:52:07,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:07,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:07,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:52:07,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420776079] [2020-10-16 13:52:07,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:52:07,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 13:52:07,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [543537776] [2020-10-16 13:52:07,955 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:07,955 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:07,956 INFO L258 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-10-16 13:52:07,956 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:07,956 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:07,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:52:07,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:07,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:52:07,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:52:07,957 INFO L87 Difference]: Start difference. First operand 683 states. Second operand 3 states. [2020-10-16 13:52:07,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:07,984 INFO L93 Difference]: Finished difference Result 600 states and 1886 transitions. [2020-10-16 13:52:07,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:52:07,984 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-16 13:52:07,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:07,991 INFO L225 Difference]: With dead ends: 600 [2020-10-16 13:52:07,991 INFO L226 Difference]: Without dead ends: 559 [2020-10-16 13:52:07,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:52:08,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-10-16 13:52:08,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2020-10-16 13:52:08,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-16 13:52:08,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1737 transitions. [2020-10-16 13:52:08,066 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1737 transitions. Word has length 3 [2020-10-16 13:52:08,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:08,066 INFO L481 AbstractCegarLoop]: Abstraction has 559 states and 1737 transitions. [2020-10-16 13:52:08,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:52:08,066 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1737 transitions. [2020-10-16 13:52:08,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 13:52:08,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:08,067 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:08,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 13:52:08,068 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:08,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:08,070 INFO L82 PathProgramCache]: Analyzing trace with hash -404806880, now seen corresponding path program 1 times [2020-10-16 13:52:08,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:08,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022699980] [2020-10-16 13:52:08,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:08,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:08,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:52:08,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022699980] [2020-10-16 13:52:08,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:52:08,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:52:08,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1006831459] [2020-10-16 13:52:08,162 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:08,163 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:08,164 INFO L258 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-16 13:52:08,164 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:08,164 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:08,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:52:08,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:08,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:52:08,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:52:08,165 INFO L87 Difference]: Start difference. First operand 559 states and 1737 transitions. Second operand 5 states. [2020-10-16 13:52:08,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:08,258 INFO L93 Difference]: Finished difference Result 817 states and 2317 transitions. [2020-10-16 13:52:08,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:52:08,259 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-16 13:52:08,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:08,268 INFO L225 Difference]: With dead ends: 817 [2020-10-16 13:52:08,269 INFO L226 Difference]: Without dead ends: 812 [2020-10-16 13:52:08,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:52:08,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-10-16 13:52:08,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 585. [2020-10-16 13:52:08,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-10-16 13:52:08,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1832 transitions. [2020-10-16 13:52:08,303 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1832 transitions. Word has length 9 [2020-10-16 13:52:08,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:08,303 INFO L481 AbstractCegarLoop]: Abstraction has 585 states and 1832 transitions. [2020-10-16 13:52:08,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:52:08,303 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1832 transitions. [2020-10-16 13:52:08,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 13:52:08,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:08,309 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:08,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 13:52:08,309 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:08,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:08,310 INFO L82 PathProgramCache]: Analyzing trace with hash -669323978, now seen corresponding path program 1 times [2020-10-16 13:52:08,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:08,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225699448] [2020-10-16 13:52:08,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:08,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:08,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 13:52:08,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225699448] [2020-10-16 13:52:08,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:52:08,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:52:08,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1228336745] [2020-10-16 13:52:08,393 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:08,394 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:08,397 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-10-16 13:52:08,398 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:08,399 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:08,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:52:08,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:08,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:52:08,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:52:08,402 INFO L87 Difference]: Start difference. First operand 585 states and 1832 transitions. Second operand 5 states. [2020-10-16 13:52:08,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:08,478 INFO L93 Difference]: Finished difference Result 843 states and 2406 transitions. [2020-10-16 13:52:08,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:52:08,479 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 13:52:08,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:08,486 INFO L225 Difference]: With dead ends: 843 [2020-10-16 13:52:08,487 INFO L226 Difference]: Without dead ends: 836 [2020-10-16 13:52:08,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:52:08,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-10-16 13:52:08,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 611. [2020-10-16 13:52:08,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-10-16 13:52:08,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1906 transitions. [2020-10-16 13:52:08,517 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1906 transitions. Word has length 13 [2020-10-16 13:52:08,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:08,517 INFO L481 AbstractCegarLoop]: Abstraction has 611 states and 1906 transitions. [2020-10-16 13:52:08,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:52:08,518 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1906 transitions. [2020-10-16 13:52:08,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 13:52:08,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:08,520 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:08,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 13:52:08,520 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:08,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:08,521 INFO L82 PathProgramCache]: Analyzing trace with hash -56737855, now seen corresponding path program 1 times [2020-10-16 13:52:08,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:08,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799817354] [2020-10-16 13:52:08,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:08,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:08,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:52:08,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799817354] [2020-10-16 13:52:08,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818006889] [2020-10-16 13:52:08,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:52:08,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:08,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 13:52:08,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:52:08,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:52:08,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:52:08,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 13:52:08,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [903945692] [2020-10-16 13:52:08,699 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:08,701 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:08,704 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions. [2020-10-16 13:52:08,704 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:08,735 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [7267#(<= ~x~0 0), 7286#(<= thr2Thread1of3ForFork0_~t~0 0)] [2020-10-16 13:52:08,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:52:08,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:08,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:52:08,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:52:08,737 INFO L87 Difference]: Start difference. First operand 611 states and 1906 transitions. Second operand 9 states. [2020-10-16 13:52:08,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:08,952 INFO L93 Difference]: Finished difference Result 1059 states and 2818 transitions. [2020-10-16 13:52:08,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:52:08,953 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-10-16 13:52:08,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:08,961 INFO L225 Difference]: With dead ends: 1059 [2020-10-16 13:52:08,961 INFO L226 Difference]: Without dead ends: 1052 [2020-10-16 13:52:08,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-16 13:52:08,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-10-16 13:52:08,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 591. [2020-10-16 13:52:08,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-10-16 13:52:08,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1840 transitions. [2020-10-16 13:52:08,991 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1840 transitions. Word has length 15 [2020-10-16 13:52:08,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:08,991 INFO L481 AbstractCegarLoop]: Abstraction has 591 states and 1840 transitions. [2020-10-16 13:52:08,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:52:08,992 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1840 transitions. [2020-10-16 13:52:08,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 13:52:08,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:08,993 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:09,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-16 13:52:09,209 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:09,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:09,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1024744543, now seen corresponding path program 2 times [2020-10-16 13:52:09,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:09,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179081008] [2020-10-16 13:52:09,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:09,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 13:52:09,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179081008] [2020-10-16 13:52:09,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:52:09,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 13:52:09,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [29507356] [2020-10-16 13:52:09,258 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:09,260 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:09,263 INFO L258 McrAutomatonBuilder]: Finished intersection with 16 states and 15 transitions. [2020-10-16 13:52:09,264 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:09,264 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:09,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:52:09,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:09,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:52:09,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:52:09,265 INFO L87 Difference]: Start difference. First operand 591 states and 1840 transitions. Second operand 7 states. [2020-10-16 13:52:09,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:09,442 INFO L93 Difference]: Finished difference Result 1053 states and 2807 transitions. [2020-10-16 13:52:09,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:52:09,443 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-16 13:52:09,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:09,450 INFO L225 Difference]: With dead ends: 1053 [2020-10-16 13:52:09,450 INFO L226 Difference]: Without dead ends: 1045 [2020-10-16 13:52:09,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 13:52:09,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-10-16 13:52:09,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 536. [2020-10-16 13:52:09,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-10-16 13:52:09,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1688 transitions. [2020-10-16 13:52:09,477 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1688 transitions. Word has length 15 [2020-10-16 13:52:09,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:09,478 INFO L481 AbstractCegarLoop]: Abstraction has 536 states and 1688 transitions. [2020-10-16 13:52:09,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:52:09,478 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1688 transitions. [2020-10-16 13:52:09,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 13:52:09,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:09,479 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:09,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-16 13:52:09,479 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:09,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:09,480 INFO L82 PathProgramCache]: Analyzing trace with hash 68174732, now seen corresponding path program 1 times [2020-10-16 13:52:09,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:09,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136509802] [2020-10-16 13:52:09,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:09,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:09,516 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 13:52:09,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136509802] [2020-10-16 13:52:09,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:52:09,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:52:09,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1192147003] [2020-10-16 13:52:09,517 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:09,519 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:09,521 INFO L258 McrAutomatonBuilder]: Finished intersection with 18 states and 17 transitions. [2020-10-16 13:52:09,522 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:09,522 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:09,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:52:09,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:09,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:52:09,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:52:09,523 INFO L87 Difference]: Start difference. First operand 536 states and 1688 transitions. Second operand 5 states. [2020-10-16 13:52:09,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:09,585 INFO L93 Difference]: Finished difference Result 736 states and 2123 transitions. [2020-10-16 13:52:09,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:52:09,585 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-16 13:52:09,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:09,591 INFO L225 Difference]: With dead ends: 736 [2020-10-16 13:52:09,592 INFO L226 Difference]: Without dead ends: 728 [2020-10-16 13:52:09,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:52:09,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-10-16 13:52:09,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 549. [2020-10-16 13:52:09,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-10-16 13:52:09,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 1684 transitions. [2020-10-16 13:52:09,616 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 1684 transitions. Word has length 17 [2020-10-16 13:52:09,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:09,616 INFO L481 AbstractCegarLoop]: Abstraction has 549 states and 1684 transitions. [2020-10-16 13:52:09,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:52:09,616 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 1684 transitions. [2020-10-16 13:52:09,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-16 13:52:09,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:09,617 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:09,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-16 13:52:09,618 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:09,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:09,618 INFO L82 PathProgramCache]: Analyzing trace with hash 2109628021, now seen corresponding path program 1 times [2020-10-16 13:52:09,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:09,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609711967] [2020-10-16 13:52:09,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:09,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 13:52:09,631 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 13:52:09,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 13:52:09,640 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 13:52:09,647 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 13:52:09,648 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 13:52:09,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-16 13:52:09,649 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 13:52:09,649 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-16 13:52:09,661 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,662 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,662 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,662 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,662 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,662 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,662 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,662 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,663 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,663 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,663 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,663 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,663 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,663 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,663 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,664 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,664 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,664 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,664 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,664 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,664 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,664 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,665 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,665 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,665 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,665 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,665 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,665 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,666 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,666 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,666 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,666 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,666 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,666 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,666 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,667 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,667 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,667 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,667 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,667 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,668 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,668 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,668 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,668 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,668 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,668 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,668 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,669 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,669 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,669 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,669 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,669 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,669 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,670 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,670 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,670 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,670 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,670 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,670 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,670 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,671 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,671 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,671 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,671 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,671 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,671 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,672 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,672 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,672 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,672 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,672 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,672 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,673 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,673 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,673 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,673 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,673 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,673 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,674 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,674 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,674 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,674 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,674 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,674 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,675 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,675 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,675 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,675 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,675 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,679 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,680 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,680 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,680 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,680 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,682 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,682 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,682 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,682 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,682 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,683 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,684 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,684 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,684 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,684 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,685 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,686 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,686 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,686 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,686 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,686 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,687 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,687 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,688 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,688 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,688 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,688 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,689 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,689 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,689 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,690 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,690 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,690 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,691 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,691 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,691 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,692 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,692 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,692 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,694 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 13:52:09,694 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-16 13:52:09,694 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 13:52:09,694 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 13:52:09,694 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 13:52:09,694 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 13:52:09,695 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 13:52:09,695 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 13:52:09,695 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 13:52:09,695 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 13:52:09,696 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 13:52:09,697 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 105 transitions, 274 flow [2020-10-16 13:52:09,697 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 105 transitions, 274 flow [2020-10-16 13:52:09,697 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 105 transitions, 274 flow [2020-10-16 13:52:09,720 INFO L129 PetriNetUnfolder]: 6/127 cut-off events. [2020-10-16 13:52:09,720 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 13:52:09,722 INFO L80 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 127 events. 6/127 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 211 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 147. Up to 10 conditions per place. [2020-10-16 13:52:09,726 INFO L117 LiptonReduction]: Number of co-enabled transitions 2192 [2020-10-16 13:52:11,272 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-16 13:52:11,344 INFO L132 LiptonReduction]: Checked pairs total: 2978 [2020-10-16 13:52:11,344 INFO L134 LiptonReduction]: Total number of compositions: 97 [2020-10-16 13:52:11,345 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 33 transitions, 130 flow [2020-10-16 13:52:11,461 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2060 states. [2020-10-16 13:52:11,461 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states. [2020-10-16 13:52:11,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-16 13:52:11,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:11,462 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-16 13:52:11,462 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 13:52:11,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:11,462 INFO L82 PathProgramCache]: Analyzing trace with hash 753552, now seen corresponding path program 1 times [2020-10-16 13:52:11,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:11,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116870921] [2020-10-16 13:52:11,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:11,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:11,484 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 13:52:11,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116870921] [2020-10-16 13:52:11,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:52:11,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 13:52:11,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [531224870] [2020-10-16 13:52:11,485 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:11,485 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:11,486 INFO L258 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-10-16 13:52:11,486 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:11,489 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:11,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:52:11,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:11,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:52:11,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:52:11,490 INFO L87 Difference]: Start difference. First operand 2060 states. Second operand 3 states. [2020-10-16 13:52:11,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:11,529 INFO L93 Difference]: Finished difference Result 1889 states and 7217 transitions. [2020-10-16 13:52:11,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:52:11,529 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-16 13:52:11,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:11,546 INFO L225 Difference]: With dead ends: 1889 [2020-10-16 13:52:11,547 INFO L226 Difference]: Without dead ends: 1767 [2020-10-16 13:52:11,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:52:11,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-10-16 13:52:11,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1767. [2020-10-16 13:52:11,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-10-16 13:52:11,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 6690 transitions. [2020-10-16 13:52:11,654 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 6690 transitions. Word has length 3 [2020-10-16 13:52:11,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:11,654 INFO L481 AbstractCegarLoop]: Abstraction has 1767 states and 6690 transitions. [2020-10-16 13:52:11,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:52:11,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 6690 transitions. [2020-10-16 13:52:11,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 13:52:11,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:11,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:11,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-16 13:52:11,655 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 13:52:11,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:11,655 INFO L82 PathProgramCache]: Analyzing trace with hash -260829075, now seen corresponding path program 1 times [2020-10-16 13:52:11,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:11,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316231898] [2020-10-16 13:52:11,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:11,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:11,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:52:11,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316231898] [2020-10-16 13:52:11,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:52:11,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:52:11,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [47229185] [2020-10-16 13:52:11,682 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:11,683 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:11,683 INFO L258 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-16 13:52:11,684 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:11,684 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:11,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:52:11,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:11,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:52:11,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:52:11,685 INFO L87 Difference]: Start difference. First operand 1767 states and 6690 transitions. Second operand 5 states. [2020-10-16 13:52:11,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:11,762 INFO L93 Difference]: Finished difference Result 2905 states and 10138 transitions. [2020-10-16 13:52:11,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:52:11,763 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-16 13:52:11,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:11,785 INFO L225 Difference]: With dead ends: 2905 [2020-10-16 13:52:11,786 INFO L226 Difference]: Without dead ends: 2899 [2020-10-16 13:52:11,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:52:11,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-10-16 13:52:11,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1966. [2020-10-16 13:52:11,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2020-10-16 13:52:11,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 7503 transitions. [2020-10-16 13:52:11,892 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 7503 transitions. Word has length 9 [2020-10-16 13:52:11,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:11,892 INFO L481 AbstractCegarLoop]: Abstraction has 1966 states and 7503 transitions. [2020-10-16 13:52:11,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:52:11,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 7503 transitions. [2020-10-16 13:52:11,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 13:52:11,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:11,893 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:11,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-16 13:52:11,893 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 13:52:11,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:11,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1408743431, now seen corresponding path program 1 times [2020-10-16 13:52:11,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:11,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142039614] [2020-10-16 13:52:11,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:11,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:11,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 13:52:11,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142039614] [2020-10-16 13:52:11,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:52:11,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:52:11,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [121113895] [2020-10-16 13:52:11,937 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:11,939 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:11,940 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-10-16 13:52:11,940 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:11,940 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:11,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:52:11,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:11,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:52:11,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:52:11,941 INFO L87 Difference]: Start difference. First operand 1966 states and 7503 transitions. Second operand 5 states. [2020-10-16 13:52:12,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:12,018 INFO L93 Difference]: Finished difference Result 3204 states and 11312 transitions. [2020-10-16 13:52:12,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:52:12,018 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 13:52:12,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:12,053 INFO L225 Difference]: With dead ends: 3204 [2020-10-16 13:52:12,054 INFO L226 Difference]: Without dead ends: 3194 [2020-10-16 13:52:12,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:52:12,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2020-10-16 13:52:12,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 2200. [2020-10-16 13:52:12,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-10-16 13:52:12,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 8453 transitions. [2020-10-16 13:52:12,154 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 8453 transitions. Word has length 13 [2020-10-16 13:52:12,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:12,157 INFO L481 AbstractCegarLoop]: Abstraction has 2200 states and 8453 transitions. [2020-10-16 13:52:12,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:52:12,157 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 8453 transitions. [2020-10-16 13:52:12,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 13:52:12,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:12,158 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:12,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-16 13:52:12,159 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 13:52:12,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:12,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1555768808, now seen corresponding path program 1 times [2020-10-16 13:52:12,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:12,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112460708] [2020-10-16 13:52:12,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:12,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:52:12,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112460708] [2020-10-16 13:52:12,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275847502] [2020-10-16 13:52:12,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:52:12,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:12,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 13:52:12,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:52:12,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:52:12,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:52:12,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 13:52:12,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1239571479] [2020-10-16 13:52:12,315 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:12,317 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:12,319 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions. [2020-10-16 13:52:12,320 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:12,350 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [24136#(<= ~x~0 0), 24155#(<= thr2Thread1of4ForFork0_~t~0 0)] [2020-10-16 13:52:12,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:52:12,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:12,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:52:12,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:52:12,352 INFO L87 Difference]: Start difference. First operand 2200 states and 8453 transitions. Second operand 9 states. [2020-10-16 13:52:12,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:12,582 INFO L93 Difference]: Finished difference Result 4556 states and 14911 transitions. [2020-10-16 13:52:12,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:52:12,625 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-10-16 13:52:12,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:12,646 INFO L225 Difference]: With dead ends: 4556 [2020-10-16 13:52:12,646 INFO L226 Difference]: Without dead ends: 4546 [2020-10-16 13:52:12,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-16 13:52:12,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2020-10-16 13:52:12,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 2157. [2020-10-16 13:52:12,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2157 states. [2020-10-16 13:52:12,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 8278 transitions. [2020-10-16 13:52:12,753 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 8278 transitions. Word has length 15 [2020-10-16 13:52:12,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:12,753 INFO L481 AbstractCegarLoop]: Abstraction has 2157 states and 8278 transitions. [2020-10-16 13:52:12,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:52:12,753 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 8278 transitions. [2020-10-16 13:52:12,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 13:52:12,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:12,754 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:12,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-16 13:52:12,968 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 13:52:12,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:12,969 INFO L82 PathProgramCache]: Analyzing trace with hash -887756896, now seen corresponding path program 2 times [2020-10-16 13:52:12,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:12,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993806465] [2020-10-16 13:52:12,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:13,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 13:52:13,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993806465] [2020-10-16 13:52:13,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:52:13,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 13:52:13,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [248587441] [2020-10-16 13:52:13,020 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:13,022 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:13,023 INFO L258 McrAutomatonBuilder]: Finished intersection with 16 states and 15 transitions. [2020-10-16 13:52:13,023 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:13,024 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:13,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:52:13,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:13,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:52:13,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:52:13,025 INFO L87 Difference]: Start difference. First operand 2157 states and 8278 transitions. Second operand 7 states. [2020-10-16 13:52:13,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:13,223 INFO L93 Difference]: Finished difference Result 4612 states and 15111 transitions. [2020-10-16 13:52:13,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:52:13,224 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-16 13:52:13,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:13,239 INFO L225 Difference]: With dead ends: 4612 [2020-10-16 13:52:13,240 INFO L226 Difference]: Without dead ends: 4601 [2020-10-16 13:52:13,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 13:52:13,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2020-10-16 13:52:13,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 2035. [2020-10-16 13:52:13,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2035 states. [2020-10-16 13:52:13,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 7845 transitions. [2020-10-16 13:52:13,353 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 7845 transitions. Word has length 15 [2020-10-16 13:52:13,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:13,353 INFO L481 AbstractCegarLoop]: Abstraction has 2035 states and 7845 transitions. [2020-10-16 13:52:13,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:52:13,354 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 7845 transitions. [2020-10-16 13:52:13,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 13:52:13,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:13,355 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:13,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-16 13:52:13,356 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 13:52:13,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:13,356 INFO L82 PathProgramCache]: Analyzing trace with hash 695111130, now seen corresponding path program 1 times [2020-10-16 13:52:13,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:13,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342006099] [2020-10-16 13:52:13,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:13,431 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 13:52:13,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342006099] [2020-10-16 13:52:13,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:52:13,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:52:13,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [584315771] [2020-10-16 13:52:13,432 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:13,433 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:13,437 INFO L258 McrAutomatonBuilder]: Finished intersection with 18 states and 17 transitions. [2020-10-16 13:52:13,437 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:13,438 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:13,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:52:13,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:13,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:52:13,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:52:13,438 INFO L87 Difference]: Start difference. First operand 2035 states and 7845 transitions. Second operand 5 states. [2020-10-16 13:52:13,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:13,513 INFO L93 Difference]: Finished difference Result 3265 states and 11681 transitions. [2020-10-16 13:52:13,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:52:13,514 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-16 13:52:13,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:13,529 INFO L225 Difference]: With dead ends: 3265 [2020-10-16 13:52:13,529 INFO L226 Difference]: Without dead ends: 3250 [2020-10-16 13:52:13,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:52:13,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2020-10-16 13:52:13,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 2281. [2020-10-16 13:52:13,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2020-10-16 13:52:13,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 8755 transitions. [2020-10-16 13:52:13,616 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 8755 transitions. Word has length 17 [2020-10-16 13:52:13,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:13,616 INFO L481 AbstractCegarLoop]: Abstraction has 2281 states and 8755 transitions. [2020-10-16 13:52:13,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:52:13,617 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 8755 transitions. [2020-10-16 13:52:13,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 13:52:13,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:13,618 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:13,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-16 13:52:13,618 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 13:52:13,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:13,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1754455113, now seen corresponding path program 1 times [2020-10-16 13:52:13,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:13,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151206944] [2020-10-16 13:52:13,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:13,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:13,666 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 13:52:13,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151206944] [2020-10-16 13:52:13,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850199293] [2020-10-16 13:52:13,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:52:13,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:13,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 13:52:13,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:52:13,788 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 13:52:13,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:52:13,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 13:52:13,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1865561493] [2020-10-16 13:52:13,789 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:13,791 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:13,796 INFO L258 McrAutomatonBuilder]: Finished intersection with 36 states and 51 transitions. [2020-10-16 13:52:13,796 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:13,880 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [49633#(<= thr2Thread1of4ForFork0_~t~0 0), 49614#(<= ~x~0 0)] [2020-10-16 13:52:13,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:52:13,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:13,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:52:13,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:52:13,882 INFO L87 Difference]: Start difference. First operand 2281 states and 8755 transitions. Second operand 9 states. [2020-10-16 13:52:14,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:14,108 INFO L93 Difference]: Finished difference Result 4825 states and 15986 transitions. [2020-10-16 13:52:14,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:52:14,108 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-10-16 13:52:14,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:14,121 INFO L225 Difference]: With dead ends: 4825 [2020-10-16 13:52:14,122 INFO L226 Difference]: Without dead ends: 4813 [2020-10-16 13:52:14,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-16 13:52:14,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4813 states. [2020-10-16 13:52:14,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4813 to 2305. [2020-10-16 13:52:14,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-10-16 13:52:14,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 8815 transitions. [2020-10-16 13:52:14,228 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 8815 transitions. Word has length 19 [2020-10-16 13:52:14,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:14,228 INFO L481 AbstractCegarLoop]: Abstraction has 2305 states and 8815 transitions. [2020-10-16 13:52:14,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:52:14,229 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 8815 transitions. [2020-10-16 13:52:14,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 13:52:14,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:14,230 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:14,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:52:14,446 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 13:52:14,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:14,446 INFO L82 PathProgramCache]: Analyzing trace with hash -131464925, now seen corresponding path program 1 times [2020-10-16 13:52:14,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:14,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371478520] [2020-10-16 13:52:14,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:14,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:14,510 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 13:52:14,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371478520] [2020-10-16 13:52:14,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613620179] [2020-10-16 13:52:14,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:52:14,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:14,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 13:52:14,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:52:14,638 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 13:52:14,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:52:14,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 13:52:14,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1733327168] [2020-10-16 13:52:14,639 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:14,640 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:14,644 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 35 transitions. [2020-10-16 13:52:14,644 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:14,667 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [59128#(<= ~x~0 0), 59162#(<= thr2Thread2of4ForFork0_~t~0 0)] [2020-10-16 13:52:14,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:52:14,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:14,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:52:14,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:52:14,668 INFO L87 Difference]: Start difference. First operand 2305 states and 8815 transitions. Second operand 9 states. [2020-10-16 13:52:14,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:14,919 INFO L93 Difference]: Finished difference Result 4942 states and 16410 transitions. [2020-10-16 13:52:14,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:52:14,919 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-10-16 13:52:14,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:14,928 INFO L225 Difference]: With dead ends: 4942 [2020-10-16 13:52:14,929 INFO L226 Difference]: Without dead ends: 4925 [2020-10-16 13:52:14,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-16 13:52:14,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4925 states. [2020-10-16 13:52:15,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4925 to 2299. [2020-10-16 13:52:15,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2299 states. [2020-10-16 13:52:15,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 8782 transitions. [2020-10-16 13:52:15,030 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 8782 transitions. Word has length 19 [2020-10-16 13:52:15,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:15,030 INFO L481 AbstractCegarLoop]: Abstraction has 2299 states and 8782 transitions. [2020-10-16 13:52:15,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:52:15,030 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 8782 transitions. [2020-10-16 13:52:15,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 13:52:15,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:15,032 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:15,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:52:15,247 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 13:52:15,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:15,247 INFO L82 PathProgramCache]: Analyzing trace with hash -2013120191, now seen corresponding path program 2 times [2020-10-16 13:52:15,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:15,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621609793] [2020-10-16 13:52:15,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:15,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:15,314 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 13:52:15,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621609793] [2020-10-16 13:52:15,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:52:15,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 13:52:15,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [339519656] [2020-10-16 13:52:15,316 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:15,317 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:15,320 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 19 transitions. [2020-10-16 13:52:15,320 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:15,321 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:15,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:52:15,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:15,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:52:15,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:52:15,322 INFO L87 Difference]: Start difference. First operand 2299 states and 8782 transitions. Second operand 7 states. [2020-10-16 13:52:15,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:15,535 INFO L93 Difference]: Finished difference Result 4934 states and 16393 transitions. [2020-10-16 13:52:15,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:52:15,595 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 13:52:15,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:15,612 INFO L225 Difference]: With dead ends: 4934 [2020-10-16 13:52:15,612 INFO L226 Difference]: Without dead ends: 4917 [2020-10-16 13:52:15,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 13:52:15,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4917 states. [2020-10-16 13:52:15,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4917 to 2216. [2020-10-16 13:52:15,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2216 states. [2020-10-16 13:52:15,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 8477 transitions. [2020-10-16 13:52:15,714 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 8477 transitions. Word has length 19 [2020-10-16 13:52:15,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:15,715 INFO L481 AbstractCegarLoop]: Abstraction has 2216 states and 8477 transitions. [2020-10-16 13:52:15,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:52:15,715 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 8477 transitions. [2020-10-16 13:52:15,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 13:52:15,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:15,717 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:15,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-16 13:52:15,717 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 13:52:15,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:15,717 INFO L82 PathProgramCache]: Analyzing trace with hash -2013113743, now seen corresponding path program 2 times [2020-10-16 13:52:15,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:15,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547324299] [2020-10-16 13:52:15,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:15,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:15,770 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 13:52:15,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547324299] [2020-10-16 13:52:15,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:52:15,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 13:52:15,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [135445857] [2020-10-16 13:52:15,771 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:15,775 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:15,778 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 19 transitions. [2020-10-16 13:52:15,778 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:15,779 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:15,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:52:15,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:15,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:52:15,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:52:15,780 INFO L87 Difference]: Start difference. First operand 2216 states and 8477 transitions. Second operand 7 states. [2020-10-16 13:52:15,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:15,959 INFO L93 Difference]: Finished difference Result 4774 states and 15828 transitions. [2020-10-16 13:52:15,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:52:15,959 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 13:52:15,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:15,967 INFO L225 Difference]: With dead ends: 4774 [2020-10-16 13:52:15,967 INFO L226 Difference]: Without dead ends: 4757 [2020-10-16 13:52:15,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 13:52:15,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2020-10-16 13:52:16,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 2150. [2020-10-16 13:52:16,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2150 states. [2020-10-16 13:52:16,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 8243 transitions. [2020-10-16 13:52:16,048 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 8243 transitions. Word has length 19 [2020-10-16 13:52:16,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:16,048 INFO L481 AbstractCegarLoop]: Abstraction has 2150 states and 8243 transitions. [2020-10-16 13:52:16,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:52:16,048 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 8243 transitions. [2020-10-16 13:52:16,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 13:52:16,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:16,050 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:16,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-16 13:52:16,050 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 13:52:16,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:16,051 INFO L82 PathProgramCache]: Analyzing trace with hash -9146414, now seen corresponding path program 1 times [2020-10-16 13:52:16,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:16,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708143006] [2020-10-16 13:52:16,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:16,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:16,122 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:52:16,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708143006] [2020-10-16 13:52:16,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386331220] [2020-10-16 13:52:16,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:52:16,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:16,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 13:52:16,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:52:16,250 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:52:16,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:52:16,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 13:52:16,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1125065032] [2020-10-16 13:52:16,251 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:16,255 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:16,270 INFO L258 McrAutomatonBuilder]: Finished intersection with 46 states and 69 transitions. [2020-10-16 13:52:16,270 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:16,376 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [87235#(<= ~x~0 0), 87254#(<= thr2Thread1of4ForFork0_~t~0 0)] [2020-10-16 13:52:16,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 13:52:16,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:16,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 13:52:16,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 13:52:16,378 INFO L87 Difference]: Start difference. First operand 2150 states and 8243 transitions. Second operand 11 states. [2020-10-16 13:52:16,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:16,961 INFO L93 Difference]: Finished difference Result 6025 states and 18746 transitions. [2020-10-16 13:52:16,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:52:16,962 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-16 13:52:16,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:16,971 INFO L225 Difference]: With dead ends: 6025 [2020-10-16 13:52:16,971 INFO L226 Difference]: Without dead ends: 6017 [2020-10-16 13:52:16,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 13:52:16,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6017 states. [2020-10-16 13:52:17,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6017 to 2117. [2020-10-16 13:52:17,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2117 states. [2020-10-16 13:52:17,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 8106 transitions. [2020-10-16 13:52:17,049 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 8106 transitions. Word has length 21 [2020-10-16 13:52:17,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:17,049 INFO L481 AbstractCegarLoop]: Abstraction has 2117 states and 8106 transitions. [2020-10-16 13:52:17,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 13:52:17,049 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 8106 transitions. [2020-10-16 13:52:17,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 13:52:17,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:17,051 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:17,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-16 13:52:17,265 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 13:52:17,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:17,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1890795232, now seen corresponding path program 2 times [2020-10-16 13:52:17,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:17,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69336124] [2020-10-16 13:52:17,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:17,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:17,319 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 13:52:17,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69336124] [2020-10-16 13:52:17,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35350841] [2020-10-16 13:52:17,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:52:17,397 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 13:52:17,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 13:52:17,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 13:52:17,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:52:17,422 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 13:52:17,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:52:17,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 13:52:17,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1424691444] [2020-10-16 13:52:17,423 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:17,425 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:17,431 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 53 transitions. [2020-10-16 13:52:17,431 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:17,492 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [97611#(<= ~x~0 0), 97630#(<= thr2Thread1of4ForFork0_~t~0 0)] [2020-10-16 13:52:17,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 13:52:17,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:17,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 13:52:17,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 13:52:17,493 INFO L87 Difference]: Start difference. First operand 2117 states and 8106 transitions. Second operand 11 states. [2020-10-16 13:52:18,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:18,072 INFO L93 Difference]: Finished difference Result 5914 states and 18384 transitions. [2020-10-16 13:52:18,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:52:18,072 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-16 13:52:18,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:18,081 INFO L225 Difference]: With dead ends: 5914 [2020-10-16 13:52:18,082 INFO L226 Difference]: Without dead ends: 5903 [2020-10-16 13:52:18,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 13:52:18,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5903 states. [2020-10-16 13:52:18,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5903 to 2085. [2020-10-16 13:52:18,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2085 states. [2020-10-16 13:52:18,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 7975 transitions. [2020-10-16 13:52:18,177 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 7975 transitions. Word has length 21 [2020-10-16 13:52:18,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:18,178 INFO L481 AbstractCegarLoop]: Abstraction has 2085 states and 7975 transitions. [2020-10-16 13:52:18,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 13:52:18,178 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 7975 transitions. [2020-10-16 13:52:18,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 13:52:18,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:18,180 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:18,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:52:18,394 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 13:52:18,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:18,394 INFO L82 PathProgramCache]: Analyzing trace with hash 180724060, now seen corresponding path program 3 times [2020-10-16 13:52:18,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:18,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16395174] [2020-10-16 13:52:18,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:18,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:18,460 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 13:52:18,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16395174] [2020-10-16 13:52:18,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453923833] [2020-10-16 13:52:18,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:52:18,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 13:52:18,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 13:52:18,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 13:52:18,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:52:18,599 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 13:52:18,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:52:18,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 13:52:18,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1998190720] [2020-10-16 13:52:18,601 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:18,604 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:18,612 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 53 transitions. [2020-10-16 13:52:18,613 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:18,655 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [107812#(<= ~x~0 0), 107846#(<= thr2Thread2of4ForFork0_~t~0 0)] [2020-10-16 13:52:18,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 13:52:18,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:18,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 13:52:18,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 13:52:18,657 INFO L87 Difference]: Start difference. First operand 2085 states and 7975 transitions. Second operand 11 states. [2020-10-16 13:52:19,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:19,212 INFO L93 Difference]: Finished difference Result 5907 states and 18375 transitions. [2020-10-16 13:52:19,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:52:19,212 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-16 13:52:19,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:19,226 INFO L225 Difference]: With dead ends: 5907 [2020-10-16 13:52:19,226 INFO L226 Difference]: Without dead ends: 5899 [2020-10-16 13:52:19,226 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 13:52:19,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5899 states. [2020-10-16 13:52:19,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5899 to 2008. [2020-10-16 13:52:19,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2008 states. [2020-10-16 13:52:19,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 7698 transitions. [2020-10-16 13:52:19,328 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 7698 transitions. Word has length 21 [2020-10-16 13:52:19,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:19,328 INFO L481 AbstractCegarLoop]: Abstraction has 2008 states and 7698 transitions. [2020-10-16 13:52:19,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 13:52:19,329 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 7698 transitions. [2020-10-16 13:52:19,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 13:52:19,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:19,330 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:19,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-10-16 13:52:19,540 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 13:52:19,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:19,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1783759286, now seen corresponding path program 4 times [2020-10-16 13:52:19,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:19,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960023903] [2020-10-16 13:52:19,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:19,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:19,620 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 13:52:19,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960023903] [2020-10-16 13:52:19,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592815462] [2020-10-16 13:52:19,621 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:52:19,684 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 13:52:19,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 13:52:19,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 13:52:19,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:52:19,708 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 13:52:19,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:52:19,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 13:52:19,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1821299062] [2020-10-16 13:52:19,708 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:19,710 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:19,715 INFO L258 McrAutomatonBuilder]: Finished intersection with 30 states and 37 transitions. [2020-10-16 13:52:19,715 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:19,731 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [117852#(<= ~x~0 0), 117886#(<= thr2Thread2of4ForFork0_~t~0 0)] [2020-10-16 13:52:19,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 13:52:19,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:19,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 13:52:19,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 13:52:19,732 INFO L87 Difference]: Start difference. First operand 2008 states and 7698 transitions. Second operand 11 states. [2020-10-16 13:52:20,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:20,261 INFO L93 Difference]: Finished difference Result 5835 states and 18155 transitions. [2020-10-16 13:52:20,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:52:20,261 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-16 13:52:20,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:20,272 INFO L225 Difference]: With dead ends: 5835 [2020-10-16 13:52:20,273 INFO L226 Difference]: Without dead ends: 5824 [2020-10-16 13:52:20,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 13:52:20,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5824 states. [2020-10-16 13:52:20,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5824 to 1976. [2020-10-16 13:52:20,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1976 states. [2020-10-16 13:52:20,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 7567 transitions. [2020-10-16 13:52:20,358 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 7567 transitions. Word has length 21 [2020-10-16 13:52:20,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:20,359 INFO L481 AbstractCegarLoop]: Abstraction has 1976 states and 7567 transitions. [2020-10-16 13:52:20,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 13:52:20,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 7567 transitions. [2020-10-16 13:52:20,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 13:52:20,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:20,361 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:20,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-16 13:52:20,573 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 13:52:20,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:20,574 INFO L82 PathProgramCache]: Analyzing trace with hash -964809789, now seen corresponding path program 1 times [2020-10-16 13:52:20,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:20,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134581096] [2020-10-16 13:52:20,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:20,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:20,619 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 13:52:20,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134581096] [2020-10-16 13:52:20,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:52:20,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:52:20,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [257934361] [2020-10-16 13:52:20,620 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:20,622 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:20,624 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-10-16 13:52:20,625 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:20,625 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:20,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:52:20,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:20,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:52:20,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:52:20,626 INFO L87 Difference]: Start difference. First operand 1976 states and 7567 transitions. Second operand 5 states. [2020-10-16 13:52:20,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:20,701 INFO L93 Difference]: Finished difference Result 3016 states and 10840 transitions. [2020-10-16 13:52:20,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:52:20,702 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-16 13:52:20,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:20,710 INFO L225 Difference]: With dead ends: 3016 [2020-10-16 13:52:20,711 INFO L226 Difference]: Without dead ends: 3000 [2020-10-16 13:52:20,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:52:20,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2020-10-16 13:52:20,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 2183. [2020-10-16 13:52:20,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2183 states. [2020-10-16 13:52:20,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2183 states to 2183 states and 8210 transitions. [2020-10-16 13:52:20,782 INFO L78 Accepts]: Start accepts. Automaton has 2183 states and 8210 transitions. Word has length 21 [2020-10-16 13:52:20,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:20,782 INFO L481 AbstractCegarLoop]: Abstraction has 2183 states and 8210 transitions. [2020-10-16 13:52:20,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:52:20,783 INFO L276 IsEmpty]: Start isEmpty. Operand 2183 states and 8210 transitions. [2020-10-16 13:52:20,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 13:52:20,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:20,784 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:20,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-16 13:52:20,785 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 13:52:20,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:20,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1873231848, now seen corresponding path program 5 times [2020-10-16 13:52:20,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:20,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709946047] [2020-10-16 13:52:20,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:20,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:20,848 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 13:52:20,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709946047] [2020-10-16 13:52:20,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:52:20,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 13:52:20,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1448308006] [2020-10-16 13:52:20,849 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:20,851 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:20,904 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-10-16 13:52:20,905 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:20,905 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:20,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:52:20,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:20,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:52:20,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:52:20,906 INFO L87 Difference]: Start difference. First operand 2183 states and 8210 transitions. Second operand 9 states. [2020-10-16 13:52:21,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:21,396 INFO L93 Difference]: Finished difference Result 6150 states and 19247 transitions. [2020-10-16 13:52:21,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:52:21,397 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 13:52:21,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:21,406 INFO L225 Difference]: With dead ends: 6150 [2020-10-16 13:52:21,406 INFO L226 Difference]: Without dead ends: 6139 [2020-10-16 13:52:21,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 13:52:21,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6139 states. [2020-10-16 13:52:21,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6139 to 2096. [2020-10-16 13:52:21,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2096 states. [2020-10-16 13:52:21,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 7876 transitions. [2020-10-16 13:52:21,498 INFO L78 Accepts]: Start accepts. Automaton has 2096 states and 7876 transitions. Word has length 21 [2020-10-16 13:52:21,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:21,498 INFO L481 AbstractCegarLoop]: Abstraction has 2096 states and 7876 transitions. [2020-10-16 13:52:21,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:52:21,498 INFO L276 IsEmpty]: Start isEmpty. Operand 2096 states and 7876 transitions. [2020-10-16 13:52:21,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 13:52:21,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:21,499 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:21,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-16 13:52:21,499 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 13:52:21,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:21,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1867041768, now seen corresponding path program 6 times [2020-10-16 13:52:21,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:21,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440990255] [2020-10-16 13:52:21,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:21,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:21,554 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 13:52:21,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440990255] [2020-10-16 13:52:21,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:52:21,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 13:52:21,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2098891221] [2020-10-16 13:52:21,555 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:21,557 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:21,560 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-10-16 13:52:21,560 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:21,561 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:21,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:52:21,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:21,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:52:21,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:52:21,562 INFO L87 Difference]: Start difference. First operand 2096 states and 7876 transitions. Second operand 9 states. [2020-10-16 13:52:22,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:22,059 INFO L93 Difference]: Finished difference Result 6017 states and 18791 transitions. [2020-10-16 13:52:22,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:52:22,059 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 13:52:22,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:22,068 INFO L225 Difference]: With dead ends: 6017 [2020-10-16 13:52:22,068 INFO L226 Difference]: Without dead ends: 6002 [2020-10-16 13:52:22,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 13:52:22,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6002 states. [2020-10-16 13:52:22,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6002 to 1965. [2020-10-16 13:52:22,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2020-10-16 13:52:22,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 7429 transitions. [2020-10-16 13:52:22,148 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 7429 transitions. Word has length 21 [2020-10-16 13:52:22,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:22,149 INFO L481 AbstractCegarLoop]: Abstraction has 1965 states and 7429 transitions. [2020-10-16 13:52:22,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:52:22,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 7429 transitions. [2020-10-16 13:52:22,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-16 13:52:22,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:22,150 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:22,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-16 13:52:22,150 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 13:52:22,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:22,151 INFO L82 PathProgramCache]: Analyzing trace with hash 150840888, now seen corresponding path program 1 times [2020-10-16 13:52:22,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:22,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226320008] [2020-10-16 13:52:22,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:22,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 13:52:22,161 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 13:52:22,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 13:52:22,167 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 13:52:22,174 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 13:52:22,174 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 13:52:22,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-16 13:52:22,175 WARN L371 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 13:52:22,175 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-16 13:52:22,188 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,188 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,188 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,188 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,189 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,189 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,189 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,189 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,189 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,189 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,189 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,190 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,190 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,190 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,190 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,190 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,190 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,190 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,191 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,191 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,191 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,191 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,191 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,191 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,191 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,191 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,192 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,192 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,192 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,192 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,192 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,192 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,192 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,193 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,193 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,193 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,193 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,193 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,193 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,193 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,193 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,194 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,194 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,194 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,194 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,194 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,194 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,194 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,195 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,195 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,195 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,195 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,195 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,195 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,195 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,196 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,196 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,196 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,196 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,196 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,196 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,196 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,196 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,197 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,197 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,197 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,197 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,197 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,197 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,197 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,198 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,198 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,198 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,198 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,198 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,198 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,198 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,198 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,199 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,199 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,199 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,199 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,199 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,199 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,199 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,200 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,200 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,200 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,200 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,200 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,200 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,200 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,200 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,201 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,201 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,201 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,201 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,201 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,201 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,202 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,202 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,202 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,202 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,202 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,202 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,202 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,203 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,203 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,203 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,203 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,209 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,209 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,209 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,209 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,210 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,211 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,211 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,211 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,211 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,211 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,212 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,213 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,213 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,213 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,213 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,214 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,214 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,214 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,215 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,215 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,216 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,216 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,216 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,216 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,216 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,216 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,217 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,217 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,218 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,218 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,218 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,218 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,219 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,219 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,219 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,219 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,220 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,220 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,221 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,221 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,221 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,221 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,221 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,221 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,222 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,223 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,223 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,223 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,223 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,223 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:22,226 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 13:52:22,226 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-16 13:52:22,227 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 13:52:22,227 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 13:52:22,227 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 13:52:22,227 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 13:52:22,227 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 13:52:22,227 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 13:52:22,227 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 13:52:22,228 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 13:52:22,229 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 13:52:22,229 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 139 places, 123 transitions, 336 flow [2020-10-16 13:52:22,229 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 139 places, 123 transitions, 336 flow [2020-10-16 13:52:22,230 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 139 places, 123 transitions, 336 flow [2020-10-16 13:52:22,250 INFO L129 PetriNetUnfolder]: 7/149 cut-off events. [2020-10-16 13:52:22,251 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-16 13:52:22,253 INFO L80 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 149 events. 7/149 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 256 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 176. Up to 12 conditions per place. [2020-10-16 13:52:22,258 INFO L117 LiptonReduction]: Number of co-enabled transitions 2860 [2020-10-16 13:52:23,894 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-16 13:52:23,959 INFO L132 LiptonReduction]: Checked pairs total: 4168 [2020-10-16 13:52:23,959 INFO L134 LiptonReduction]: Total number of compositions: 121 [2020-10-16 13:52:23,960 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 39 transitions, 168 flow [2020-10-16 13:52:24,345 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6191 states. [2020-10-16 13:52:24,346 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states. [2020-10-16 13:52:24,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-16 13:52:24,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:24,346 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-16 13:52:24,346 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:24,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:24,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1011964, now seen corresponding path program 1 times [2020-10-16 13:52:24,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:24,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705893654] [2020-10-16 13:52:24,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:24,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:52:24,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705893654] [2020-10-16 13:52:24,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:52:24,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 13:52:24,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [100647919] [2020-10-16 13:52:24,365 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:24,365 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:24,365 INFO L258 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-10-16 13:52:24,366 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:24,366 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:24,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:52:24,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:24,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:52:24,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:52:24,367 INFO L87 Difference]: Start difference. First operand 6191 states. Second operand 3 states. [2020-10-16 13:52:24,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:24,429 INFO L93 Difference]: Finished difference Result 5844 states and 26316 transitions. [2020-10-16 13:52:24,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:52:24,429 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-16 13:52:24,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:24,443 INFO L225 Difference]: With dead ends: 5844 [2020-10-16 13:52:24,443 INFO L226 Difference]: Without dead ends: 5479 [2020-10-16 13:52:24,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:52:24,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2020-10-16 13:52:24,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 5479. [2020-10-16 13:52:24,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5479 states. [2020-10-16 13:52:24,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5479 states to 5479 states and 24493 transitions. [2020-10-16 13:52:24,701 INFO L78 Accepts]: Start accepts. Automaton has 5479 states and 24493 transitions. Word has length 3 [2020-10-16 13:52:24,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:24,701 INFO L481 AbstractCegarLoop]: Abstraction has 5479 states and 24493 transitions. [2020-10-16 13:52:24,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:52:24,702 INFO L276 IsEmpty]: Start isEmpty. Operand 5479 states and 24493 transitions. [2020-10-16 13:52:24,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 13:52:24,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:24,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:24,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-16 13:52:24,702 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:24,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:24,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1084774388, now seen corresponding path program 1 times [2020-10-16 13:52:24,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:24,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464632055] [2020-10-16 13:52:24,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:24,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:52:24,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464632055] [2020-10-16 13:52:24,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:52:24,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:52:24,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [632109661] [2020-10-16 13:52:24,728 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:24,728 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:24,729 INFO L258 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-16 13:52:24,729 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:24,730 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:24,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:52:24,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:24,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:52:24,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:52:24,730 INFO L87 Difference]: Start difference. First operand 5479 states and 24493 transitions. Second operand 5 states. [2020-10-16 13:52:24,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:24,832 INFO L93 Difference]: Finished difference Result 9673 states and 40333 transitions. [2020-10-16 13:52:24,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:52:24,833 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-16 13:52:24,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:24,855 INFO L225 Difference]: With dead ends: 9673 [2020-10-16 13:52:24,855 INFO L226 Difference]: Without dead ends: 9666 [2020-10-16 13:52:24,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:52:24,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9666 states. [2020-10-16 13:52:25,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9666 to 6331. [2020-10-16 13:52:25,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6331 states. [2020-10-16 13:52:25,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 28544 transitions. [2020-10-16 13:52:25,087 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 28544 transitions. Word has length 9 [2020-10-16 13:52:25,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:25,087 INFO L481 AbstractCegarLoop]: Abstraction has 6331 states and 28544 transitions. [2020-10-16 13:52:25,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:52:25,088 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 28544 transitions. [2020-10-16 13:52:25,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 13:52:25,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:25,088 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:25,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-16 13:52:25,088 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:25,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:25,089 INFO L82 PathProgramCache]: Analyzing trace with hash 2112403116, now seen corresponding path program 1 times [2020-10-16 13:52:25,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:25,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35684772] [2020-10-16 13:52:25,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:25,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 13:52:25,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35684772] [2020-10-16 13:52:25,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:52:25,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:52:25,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [504046049] [2020-10-16 13:52:25,118 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:25,118 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:25,120 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-10-16 13:52:25,120 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:25,120 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:25,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:52:25,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:25,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:52:25,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:52:25,121 INFO L87 Difference]: Start difference. First operand 6331 states and 28544 transitions. Second operand 5 states. [2020-10-16 13:52:25,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:25,233 INFO L93 Difference]: Finished difference Result 11081 states and 46826 transitions. [2020-10-16 13:52:25,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:52:25,234 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 13:52:25,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:25,258 INFO L225 Difference]: With dead ends: 11081 [2020-10-16 13:52:25,258 INFO L226 Difference]: Without dead ends: 11068 [2020-10-16 13:52:25,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:52:25,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11068 states. [2020-10-16 13:52:25,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11068 to 7391. [2020-10-16 13:52:25,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7391 states. [2020-10-16 13:52:25,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7391 states to 7391 states and 33694 transitions. [2020-10-16 13:52:25,484 INFO L78 Accepts]: Start accepts. Automaton has 7391 states and 33694 transitions. Word has length 13 [2020-10-16 13:52:25,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:25,484 INFO L481 AbstractCegarLoop]: Abstraction has 7391 states and 33694 transitions. [2020-10-16 13:52:25,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:52:25,484 INFO L276 IsEmpty]: Start isEmpty. Operand 7391 states and 33694 transitions. [2020-10-16 13:52:25,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 13:52:25,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:25,485 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:25,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-16 13:52:25,485 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:25,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:25,485 INFO L82 PathProgramCache]: Analyzing trace with hash -28983895, now seen corresponding path program 1 times [2020-10-16 13:52:25,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:25,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266335314] [2020-10-16 13:52:25,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:25,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:25,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:52:25,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266335314] [2020-10-16 13:52:25,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752667331] [2020-10-16 13:52:25,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:52:25,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:25,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 13:52:25,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:52:25,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:52:25,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:52:25,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-16 13:52:25,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1784378882] [2020-10-16 13:52:25,616 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:25,617 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:25,620 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions. [2020-10-16 13:52:25,621 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:25,637 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:25,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:52:25,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:25,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:52:25,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:52:25,638 INFO L87 Difference]: Start difference. First operand 7391 states and 33694 transitions. Second operand 7 states. [2020-10-16 13:52:25,795 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2020-10-16 13:52:26,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:26,012 INFO L93 Difference]: Finished difference Result 16749 states and 66010 transitions. [2020-10-16 13:52:26,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:52:26,013 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-16 13:52:26,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:26,050 INFO L225 Difference]: With dead ends: 16749 [2020-10-16 13:52:26,050 INFO L226 Difference]: Without dead ends: 16736 [2020-10-16 13:52:26,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 13:52:26,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16736 states. [2020-10-16 13:52:26,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16736 to 7303. [2020-10-16 13:52:26,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7303 states. [2020-10-16 13:52:26,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 33260 transitions. [2020-10-16 13:52:26,338 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 33260 transitions. Word has length 15 [2020-10-16 13:52:26,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:26,338 INFO L481 AbstractCegarLoop]: Abstraction has 7303 states and 33260 transitions. [2020-10-16 13:52:26,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:52:26,338 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 33260 transitions. [2020-10-16 13:52:26,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 13:52:26,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:26,338 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:26,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:52:26,545 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:26,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:26,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1500121559, now seen corresponding path program 2 times [2020-10-16 13:52:26,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:26,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098560782] [2020-10-16 13:52:26,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:26,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 13:52:26,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098560782] [2020-10-16 13:52:26,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:52:26,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 13:52:26,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1223854747] [2020-10-16 13:52:26,588 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:26,590 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:26,592 INFO L258 McrAutomatonBuilder]: Finished intersection with 16 states and 15 transitions. [2020-10-16 13:52:26,592 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:26,592 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:26,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:52:26,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:26,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:52:26,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:52:26,594 INFO L87 Difference]: Start difference. First operand 7303 states and 33260 transitions. Second operand 7 states. [2020-10-16 13:52:26,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:26,847 INFO L93 Difference]: Finished difference Result 17085 states and 67393 transitions. [2020-10-16 13:52:26,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:52:26,847 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-16 13:52:26,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:26,885 INFO L225 Difference]: With dead ends: 17085 [2020-10-16 13:52:26,885 INFO L226 Difference]: Without dead ends: 17071 [2020-10-16 13:52:26,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 13:52:26,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17071 states. [2020-10-16 13:52:27,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17071 to 7048. [2020-10-16 13:52:27,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7048 states. [2020-10-16 13:52:27,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7048 states to 7048 states and 32136 transitions. [2020-10-16 13:52:27,931 INFO L78 Accepts]: Start accepts. Automaton has 7048 states and 32136 transitions. Word has length 15 [2020-10-16 13:52:27,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:27,931 INFO L481 AbstractCegarLoop]: Abstraction has 7048 states and 32136 transitions. [2020-10-16 13:52:27,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:52:27,931 INFO L276 IsEmpty]: Start isEmpty. Operand 7048 states and 32136 transitions. [2020-10-16 13:52:27,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 13:52:27,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:27,932 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:27,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-16 13:52:27,933 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:27,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:27,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1891696605, now seen corresponding path program 1 times [2020-10-16 13:52:27,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:27,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613713582] [2020-10-16 13:52:27,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:27,966 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 13:52:27,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613713582] [2020-10-16 13:52:27,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:52:27,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:52:27,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1021301512] [2020-10-16 13:52:27,967 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:27,968 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:27,970 INFO L258 McrAutomatonBuilder]: Finished intersection with 18 states and 17 transitions. [2020-10-16 13:52:27,970 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:27,971 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:27,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:52:27,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:27,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:52:27,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:52:27,972 INFO L87 Difference]: Start difference. First operand 7048 states and 32136 transitions. Second operand 5 states. [2020-10-16 13:52:28,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:28,111 INFO L93 Difference]: Finished difference Result 12234 states and 52488 transitions. [2020-10-16 13:52:28,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:52:28,112 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-16 13:52:28,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:28,139 INFO L225 Difference]: With dead ends: 12234 [2020-10-16 13:52:28,139 INFO L226 Difference]: Without dead ends: 12212 [2020-10-16 13:52:28,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:52:28,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12212 states. [2020-10-16 13:52:28,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12212 to 8342. [2020-10-16 13:52:28,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8342 states. [2020-10-16 13:52:28,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8342 states to 8342 states and 38278 transitions. [2020-10-16 13:52:28,382 INFO L78 Accepts]: Start accepts. Automaton has 8342 states and 38278 transitions. Word has length 17 [2020-10-16 13:52:28,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:28,382 INFO L481 AbstractCegarLoop]: Abstraction has 8342 states and 38278 transitions. [2020-10-16 13:52:28,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:52:28,382 INFO L276 IsEmpty]: Start isEmpty. Operand 8342 states and 38278 transitions. [2020-10-16 13:52:28,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 13:52:28,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:28,384 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:28,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-16 13:52:28,384 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:28,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:28,384 INFO L82 PathProgramCache]: Analyzing trace with hash -74039136, now seen corresponding path program 1 times [2020-10-16 13:52:28,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:28,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864035976] [2020-10-16 13:52:28,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:28,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:28,423 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 13:52:28,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864035976] [2020-10-16 13:52:28,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581758370] [2020-10-16 13:52:28,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:52:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:28,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 13:52:28,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:52:28,511 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 13:52:28,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:52:28,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-16 13:52:28,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [413239854] [2020-10-16 13:52:28,512 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:28,513 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:28,518 INFO L258 McrAutomatonBuilder]: Finished intersection with 36 states and 51 transitions. [2020-10-16 13:52:28,519 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:28,555 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:28,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:52:28,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:28,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:52:28,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:52:28,556 INFO L87 Difference]: Start difference. First operand 8342 states and 38278 transitions. Second operand 7 states. [2020-10-16 13:52:28,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:28,831 INFO L93 Difference]: Finished difference Result 19016 states and 76191 transitions. [2020-10-16 13:52:28,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:52:28,832 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 13:52:28,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:28,873 INFO L225 Difference]: With dead ends: 19016 [2020-10-16 13:52:28,873 INFO L226 Difference]: Without dead ends: 18998 [2020-10-16 13:52:28,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 13:52:28,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18998 states. [2020-10-16 13:52:29,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18998 to 8452. [2020-10-16 13:52:29,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8452 states. [2020-10-16 13:52:29,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8452 states to 8452 states and 38704 transitions. [2020-10-16 13:52:29,396 INFO L78 Accepts]: Start accepts. Automaton has 8452 states and 38704 transitions. Word has length 19 [2020-10-16 13:52:29,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:29,396 INFO L481 AbstractCegarLoop]: Abstraction has 8452 states and 38704 transitions. [2020-10-16 13:52:29,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:52:29,396 INFO L276 IsEmpty]: Start isEmpty. Operand 8452 states and 38704 transitions. [2020-10-16 13:52:29,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 13:52:29,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:29,397 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:29,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-16 13:52:29,599 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:29,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:29,599 INFO L82 PathProgramCache]: Analyzing trace with hash -274460668, now seen corresponding path program 1 times [2020-10-16 13:52:29,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:29,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975582833] [2020-10-16 13:52:29,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:29,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:29,634 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 13:52:29,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975582833] [2020-10-16 13:52:29,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725669137] [2020-10-16 13:52:29,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:52:29,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:29,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 13:52:29,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:52:29,713 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 13:52:29,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:52:29,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-16 13:52:29,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [538465752] [2020-10-16 13:52:29,714 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:29,715 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:29,719 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 35 transitions. [2020-10-16 13:52:29,719 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:29,745 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:29,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:52:29,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:29,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:52:29,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:52:29,746 INFO L87 Difference]: Start difference. First operand 8452 states and 38704 transitions. Second operand 7 states. [2020-10-16 13:52:30,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:30,101 INFO L93 Difference]: Finished difference Result 19670 states and 79028 transitions. [2020-10-16 13:52:30,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:52:30,102 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 13:52:30,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:30,178 INFO L225 Difference]: With dead ends: 19670 [2020-10-16 13:52:30,179 INFO L226 Difference]: Without dead ends: 19645 [2020-10-16 13:52:30,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 13:52:30,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19645 states. [2020-10-16 13:52:30,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19645 to 8480. [2020-10-16 13:52:30,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8480 states. [2020-10-16 13:52:30,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8480 states to 8480 states and 38825 transitions. [2020-10-16 13:52:30,558 INFO L78 Accepts]: Start accepts. Automaton has 8480 states and 38825 transitions. Word has length 19 [2020-10-16 13:52:30,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:30,558 INFO L481 AbstractCegarLoop]: Abstraction has 8480 states and 38825 transitions. [2020-10-16 13:52:30,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:52:30,558 INFO L276 IsEmpty]: Start isEmpty. Operand 8480 states and 38825 transitions. [2020-10-16 13:52:30,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 13:52:30,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:30,559 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:30,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-16 13:52:30,760 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:30,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:30,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1149256224, now seen corresponding path program 2 times [2020-10-16 13:52:30,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:30,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093168908] [2020-10-16 13:52:30,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:30,795 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 13:52:30,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093168908] [2020-10-16 13:52:30,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:52:30,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 13:52:30,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1537229104] [2020-10-16 13:52:30,796 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:30,797 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:30,800 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 19 transitions. [2020-10-16 13:52:30,800 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:30,800 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:30,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:52:30,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:30,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:52:30,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:52:30,801 INFO L87 Difference]: Start difference. First operand 8480 states and 38825 transitions. Second operand 7 states. [2020-10-16 13:52:31,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:31,074 INFO L93 Difference]: Finished difference Result 19852 states and 79846 transitions. [2020-10-16 13:52:31,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:52:31,074 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 13:52:31,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:31,826 INFO L225 Difference]: With dead ends: 19852 [2020-10-16 13:52:31,827 INFO L226 Difference]: Without dead ends: 19827 [2020-10-16 13:52:31,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 13:52:31,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19827 states. [2020-10-16 13:52:32,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19827 to 8379. [2020-10-16 13:52:32,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8379 states. [2020-10-16 13:52:32,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8379 states to 8379 states and 38406 transitions. [2020-10-16 13:52:32,138 INFO L78 Accepts]: Start accepts. Automaton has 8379 states and 38406 transitions. Word has length 19 [2020-10-16 13:52:32,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:32,138 INFO L481 AbstractCegarLoop]: Abstraction has 8379 states and 38406 transitions. [2020-10-16 13:52:32,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:52:32,138 INFO L276 IsEmpty]: Start isEmpty. Operand 8379 states and 38406 transitions. [2020-10-16 13:52:32,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 13:52:32,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:32,139 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:32,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-16 13:52:32,140 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:32,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:32,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1149271290, now seen corresponding path program 2 times [2020-10-16 13:52:32,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:32,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614036352] [2020-10-16 13:52:32,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:32,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:32,180 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 13:52:32,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614036352] [2020-10-16 13:52:32,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:52:32,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 13:52:32,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [345457070] [2020-10-16 13:52:32,181 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:32,183 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:32,185 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 19 transitions. [2020-10-16 13:52:32,186 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:32,186 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:32,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:52:32,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:32,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:52:32,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:52:32,187 INFO L87 Difference]: Start difference. First operand 8379 states and 38406 transitions. Second operand 7 states. [2020-10-16 13:52:32,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:32,466 INFO L93 Difference]: Finished difference Result 19555 states and 78564 transitions. [2020-10-16 13:52:32,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:52:32,467 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 13:52:32,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:32,511 INFO L225 Difference]: With dead ends: 19555 [2020-10-16 13:52:32,511 INFO L226 Difference]: Without dead ends: 19530 [2020-10-16 13:52:32,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 13:52:32,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19530 states. [2020-10-16 13:52:32,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19530 to 8317. [2020-10-16 13:52:32,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8317 states. [2020-10-16 13:52:32,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8317 states to 8317 states and 38184 transitions. [2020-10-16 13:52:32,831 INFO L78 Accepts]: Start accepts. Automaton has 8317 states and 38184 transitions. Word has length 19 [2020-10-16 13:52:32,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:32,831 INFO L481 AbstractCegarLoop]: Abstraction has 8317 states and 38184 transitions. [2020-10-16 13:52:32,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:52:32,831 INFO L276 IsEmpty]: Start isEmpty. Operand 8317 states and 38184 transitions. [2020-10-16 13:52:32,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 13:52:32,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:32,833 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:32,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-16 13:52:32,833 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:32,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:32,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1557322431, now seen corresponding path program 1 times [2020-10-16 13:52:32,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:32,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170199281] [2020-10-16 13:52:32,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:32,887 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:52:32,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170199281] [2020-10-16 13:52:32,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970582664] [2020-10-16 13:52:32,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:52:32,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:32,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 13:52:32,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:52:32,967 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:52:32,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:52:32,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-16 13:52:32,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1936878583] [2020-10-16 13:52:32,968 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:32,970 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:32,976 INFO L258 McrAutomatonBuilder]: Finished intersection with 46 states and 69 transitions. [2020-10-16 13:52:32,977 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:33,023 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:33,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:52:33,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:33,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:52:33,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:52:33,023 INFO L87 Difference]: Start difference. First operand 8317 states and 38184 transitions. Second operand 9 states. [2020-10-16 13:52:33,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:33,765 INFO L93 Difference]: Finished difference Result 26969 states and 101544 transitions. [2020-10-16 13:52:33,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:52:33,766 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 13:52:33,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:33,827 INFO L225 Difference]: With dead ends: 26969 [2020-10-16 13:52:33,827 INFO L226 Difference]: Without dead ends: 26957 [2020-10-16 13:52:33,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 13:52:33,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26957 states. [2020-10-16 13:52:34,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26957 to 8204. [2020-10-16 13:52:34,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8204 states. [2020-10-16 13:52:34,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8204 states to 8204 states and 37628 transitions. [2020-10-16 13:52:34,210 INFO L78 Accepts]: Start accepts. Automaton has 8204 states and 37628 transitions. Word has length 21 [2020-10-16 13:52:34,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:34,210 INFO L481 AbstractCegarLoop]: Abstraction has 8204 states and 37628 transitions. [2020-10-16 13:52:34,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:52:34,210 INFO L276 IsEmpty]: Start isEmpty. Operand 8204 states and 37628 transitions. [2020-10-16 13:52:34,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 13:52:34,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:34,211 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:34,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:52:34,412 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:34,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:34,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1862834243, now seen corresponding path program 2 times [2020-10-16 13:52:34,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:34,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88142210] [2020-10-16 13:52:34,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:34,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:34,463 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 13:52:34,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88142210] [2020-10-16 13:52:34,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477479558] [2020-10-16 13:52:34,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:52:34,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 13:52:34,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 13:52:34,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 13:52:34,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:52:34,557 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 13:52:34,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:52:34,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-16 13:52:34,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1476598152] [2020-10-16 13:52:34,559 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:34,561 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:34,567 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 53 transitions. [2020-10-16 13:52:34,567 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:34,602 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:34,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:52:34,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:34,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:52:34,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:52:34,603 INFO L87 Difference]: Start difference. First operand 8204 states and 37628 transitions. Second operand 9 states. [2020-10-16 13:52:35,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:35,233 INFO L93 Difference]: Finished difference Result 26661 states and 100277 transitions. [2020-10-16 13:52:35,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:52:35,234 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 13:52:35,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:35,291 INFO L225 Difference]: With dead ends: 26661 [2020-10-16 13:52:35,291 INFO L226 Difference]: Without dead ends: 26645 [2020-10-16 13:52:35,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 13:52:35,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26645 states. [2020-10-16 13:52:35,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26645 to 8091. [2020-10-16 13:52:35,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8091 states. [2020-10-16 13:52:35,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8091 states to 8091 states and 37076 transitions. [2020-10-16 13:52:35,827 INFO L78 Accepts]: Start accepts. Automaton has 8091 states and 37076 transitions. Word has length 21 [2020-10-16 13:52:35,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:35,827 INFO L481 AbstractCegarLoop]: Abstraction has 8091 states and 37076 transitions. [2020-10-16 13:52:35,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:52:35,827 INFO L276 IsEmpty]: Start isEmpty. Operand 8091 states and 37076 transitions. [2020-10-16 13:52:35,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 13:52:35,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:35,828 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:36,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-10-16 13:52:36,029 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:36,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:36,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1769991039, now seen corresponding path program 3 times [2020-10-16 13:52:36,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:36,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805590629] [2020-10-16 13:52:36,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:36,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:36,076 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 13:52:36,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805590629] [2020-10-16 13:52:36,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740989238] [2020-10-16 13:52:36,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:52:36,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 13:52:36,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 13:52:36,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 13:52:36,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:52:36,158 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 13:52:36,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:52:36,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-16 13:52:36,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1918978891] [2020-10-16 13:52:36,159 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:36,161 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:36,166 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 53 transitions. [2020-10-16 13:52:36,167 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:36,205 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:36,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:52:36,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:36,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:52:36,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:52:36,206 INFO L87 Difference]: Start difference. First operand 8091 states and 37076 transitions. Second operand 9 states. [2020-10-16 13:52:36,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:36,786 INFO L93 Difference]: Finished difference Result 26686 states and 100402 transitions. [2020-10-16 13:52:36,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:52:36,786 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 13:52:36,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:36,851 INFO L225 Difference]: With dead ends: 26686 [2020-10-16 13:52:36,851 INFO L226 Difference]: Without dead ends: 26674 [2020-10-16 13:52:36,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 13:52:36,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26674 states. [2020-10-16 13:52:37,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26674 to 7861. [2020-10-16 13:52:37,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7861 states. [2020-10-16 13:52:37,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7861 states to 7861 states and 36066 transitions. [2020-10-16 13:52:37,244 INFO L78 Accepts]: Start accepts. Automaton has 7861 states and 36066 transitions. Word has length 21 [2020-10-16 13:52:37,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:37,244 INFO L481 AbstractCegarLoop]: Abstraction has 7861 states and 36066 transitions. [2020-10-16 13:52:37,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:52:37,244 INFO L276 IsEmpty]: Start isEmpty. Operand 7861 states and 36066 transitions. [2020-10-16 13:52:37,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 13:52:37,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:37,246 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:37,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:52:37,447 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:37,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:37,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1763681919, now seen corresponding path program 4 times [2020-10-16 13:52:37,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:37,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217141420] [2020-10-16 13:52:37,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:37,496 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 13:52:37,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217141420] [2020-10-16 13:52:37,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664699257] [2020-10-16 13:52:37,497 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:52:37,568 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 13:52:37,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 13:52:37,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 13:52:37,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:52:37,575 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 13:52:37,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:52:37,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-16 13:52:37,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1204948004] [2020-10-16 13:52:37,576 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:37,578 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:37,582 INFO L258 McrAutomatonBuilder]: Finished intersection with 30 states and 37 transitions. [2020-10-16 13:52:37,583 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:37,603 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:37,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:52:37,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:37,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:52:37,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:52:37,604 INFO L87 Difference]: Start difference. First operand 7861 states and 36066 transitions. Second operand 9 states. [2020-10-16 13:52:38,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:38,385 INFO L93 Difference]: Finished difference Result 26489 states and 99650 transitions. [2020-10-16 13:52:38,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:52:38,386 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 13:52:38,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:38,452 INFO L225 Difference]: With dead ends: 26489 [2020-10-16 13:52:38,452 INFO L226 Difference]: Without dead ends: 26473 [2020-10-16 13:52:38,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 13:52:38,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26473 states. [2020-10-16 13:52:38,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26473 to 7748. [2020-10-16 13:52:38,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7748 states. [2020-10-16 13:52:38,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7748 states to 7748 states and 35514 transitions. [2020-10-16 13:52:38,812 INFO L78 Accepts]: Start accepts. Automaton has 7748 states and 35514 transitions. Word has length 21 [2020-10-16 13:52:38,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:38,812 INFO L481 AbstractCegarLoop]: Abstraction has 7748 states and 35514 transitions. [2020-10-16 13:52:38,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:52:38,812 INFO L276 IsEmpty]: Start isEmpty. Operand 7748 states and 35514 transitions. [2020-10-16 13:52:38,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 13:52:38,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:38,813 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:39,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-10-16 13:52:39,021 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:39,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:39,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1774143127, now seen corresponding path program 1 times [2020-10-16 13:52:39,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:39,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467369783] [2020-10-16 13:52:39,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:39,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:39,046 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 13:52:39,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467369783] [2020-10-16 13:52:39,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:52:39,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:52:39,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [724653652] [2020-10-16 13:52:39,047 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:39,048 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:39,051 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-10-16 13:52:39,051 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:39,052 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:39,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:52:39,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:39,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:52:39,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:52:39,053 INFO L87 Difference]: Start difference. First operand 7748 states and 35514 transitions. Second operand 5 states. [2020-10-16 13:52:39,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:39,174 INFO L93 Difference]: Finished difference Result 13251 states and 57501 transitions. [2020-10-16 13:52:39,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:52:39,174 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-16 13:52:39,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:39,205 INFO L225 Difference]: With dead ends: 13251 [2020-10-16 13:52:39,205 INFO L226 Difference]: Without dead ends: 13220 [2020-10-16 13:52:39,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:52:39,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13220 states. [2020-10-16 13:52:39,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13220 to 9255. [2020-10-16 13:52:39,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9255 states. [2020-10-16 13:52:39,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9255 states to 9255 states and 42368 transitions. [2020-10-16 13:52:39,473 INFO L78 Accepts]: Start accepts. Automaton has 9255 states and 42368 transitions. Word has length 21 [2020-10-16 13:52:39,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:39,473 INFO L481 AbstractCegarLoop]: Abstraction has 9255 states and 42368 transitions. [2020-10-16 13:52:39,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:52:39,473 INFO L276 IsEmpty]: Start isEmpty. Operand 9255 states and 42368 transitions. [2020-10-16 13:52:39,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 13:52:39,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:39,474 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:39,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-16 13:52:39,475 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:39,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:39,475 INFO L82 PathProgramCache]: Analyzing trace with hash -628636285, now seen corresponding path program 5 times [2020-10-16 13:52:39,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:39,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510891750] [2020-10-16 13:52:39,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:39,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:39,531 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 13:52:39,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510891750] [2020-10-16 13:52:39,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:52:39,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 13:52:39,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1798972874] [2020-10-16 13:52:39,532 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:39,533 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:39,537 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-10-16 13:52:39,537 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:39,537 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:39,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:52:39,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:39,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:52:39,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:52:39,538 INFO L87 Difference]: Start difference. First operand 9255 states and 42368 transitions. Second operand 9 states. [2020-10-16 13:52:40,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:40,197 INFO L93 Difference]: Finished difference Result 29788 states and 113841 transitions. [2020-10-16 13:52:40,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:52:40,197 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 13:52:40,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:40,267 INFO L225 Difference]: With dead ends: 29788 [2020-10-16 13:52:40,268 INFO L226 Difference]: Without dead ends: 29770 [2020-10-16 13:52:40,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 13:52:40,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29770 states. [2020-10-16 13:52:40,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29770 to 8964. [2020-10-16 13:52:40,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8964 states. [2020-10-16 13:52:40,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8964 states to 8964 states and 41031 transitions. [2020-10-16 13:52:40,856 INFO L78 Accepts]: Start accepts. Automaton has 8964 states and 41031 transitions. Word has length 21 [2020-10-16 13:52:40,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:40,856 INFO L481 AbstractCegarLoop]: Abstraction has 8964 states and 41031 transitions. [2020-10-16 13:52:40,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:52:40,856 INFO L276 IsEmpty]: Start isEmpty. Operand 8964 states and 41031 transitions. [2020-10-16 13:52:40,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 13:52:40,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:40,857 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:40,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-16 13:52:40,858 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:40,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:40,858 INFO L82 PathProgramCache]: Analyzing trace with hash -643099645, now seen corresponding path program 6 times [2020-10-16 13:52:40,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:40,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455337025] [2020-10-16 13:52:40,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:40,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:40,920 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 13:52:40,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455337025] [2020-10-16 13:52:40,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:52:40,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 13:52:40,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1255140794] [2020-10-16 13:52:40,921 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:40,923 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:40,925 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-10-16 13:52:40,925 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:40,926 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:40,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:52:40,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:40,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:52:40,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:52:40,926 INFO L87 Difference]: Start difference. First operand 8964 states and 41031 transitions. Second operand 9 states. [2020-10-16 13:52:41,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:41,819 INFO L93 Difference]: Finished difference Result 29379 states and 112099 transitions. [2020-10-16 13:52:41,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:52:41,820 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 13:52:41,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:41,916 INFO L225 Difference]: With dead ends: 29379 [2020-10-16 13:52:41,916 INFO L226 Difference]: Without dead ends: 29356 [2020-10-16 13:52:41,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 13:52:42,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29356 states. [2020-10-16 13:52:42,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29356 to 8573. [2020-10-16 13:52:42,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8573 states. [2020-10-16 13:52:42,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8573 states to 8573 states and 39353 transitions. [2020-10-16 13:52:42,366 INFO L78 Accepts]: Start accepts. Automaton has 8573 states and 39353 transitions. Word has length 21 [2020-10-16 13:52:42,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:42,366 INFO L481 AbstractCegarLoop]: Abstraction has 8573 states and 39353 transitions. [2020-10-16 13:52:42,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:52:42,366 INFO L276 IsEmpty]: Start isEmpty. Operand 8573 states and 39353 transitions. [2020-10-16 13:52:42,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 13:52:42,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:42,368 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:42,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-16 13:52:42,368 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:42,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:42,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1599602836, now seen corresponding path program 1 times [2020-10-16 13:52:42,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:42,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050813657] [2020-10-16 13:52:42,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:42,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:42,403 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 13:52:42,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050813657] [2020-10-16 13:52:42,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832758612] [2020-10-16 13:52:42,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:52:42,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:42,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 13:52:42,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:52:42,488 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 13:52:42,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:52:42,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-16 13:52:42,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [881544481] [2020-10-16 13:52:42,489 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:42,491 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:42,496 INFO L258 McrAutomatonBuilder]: Finished intersection with 48 states and 71 transitions. [2020-10-16 13:52:42,496 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:42,561 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:42,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:52:42,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:42,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:52:42,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:52:42,562 INFO L87 Difference]: Start difference. First operand 8573 states and 39353 transitions. Second operand 7 states. [2020-10-16 13:52:42,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:42,857 INFO L93 Difference]: Finished difference Result 19727 states and 80274 transitions. [2020-10-16 13:52:42,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:52:42,857 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-16 13:52:42,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:42,919 INFO L225 Difference]: With dead ends: 19727 [2020-10-16 13:52:42,919 INFO L226 Difference]: Without dead ends: 19703 [2020-10-16 13:52:42,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 13:52:43,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19703 states. [2020-10-16 13:52:43,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19703 to 8847. [2020-10-16 13:52:43,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8847 states. [2020-10-16 13:52:43,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8847 states to 8847 states and 40495 transitions. [2020-10-16 13:52:43,365 INFO L78 Accepts]: Start accepts. Automaton has 8847 states and 40495 transitions. Word has length 23 [2020-10-16 13:52:43,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:43,365 INFO L481 AbstractCegarLoop]: Abstraction has 8847 states and 40495 transitions. [2020-10-16 13:52:43,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:52:43,366 INFO L276 IsEmpty]: Start isEmpty. Operand 8847 states and 40495 transitions. [2020-10-16 13:52:43,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 13:52:43,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:43,368 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:43,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-10-16 13:52:43,579 INFO L429 AbstractCegarLoop]: === Iteration 19 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:43,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:43,580 INFO L82 PathProgramCache]: Analyzing trace with hash 72758744, now seen corresponding path program 1 times [2020-10-16 13:52:43,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:43,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546552063] [2020-10-16 13:52:43,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:43,614 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 13:52:43,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546552063] [2020-10-16 13:52:43,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843450915] [2020-10-16 13:52:43,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:52:43,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:43,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 13:52:43,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:52:43,700 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 13:52:43,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:52:43,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-16 13:52:43,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [304033008] [2020-10-16 13:52:43,701 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:43,703 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:43,709 INFO L258 McrAutomatonBuilder]: Finished intersection with 40 states and 55 transitions. [2020-10-16 13:52:43,709 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:43,738 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:43,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:52:43,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:43,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:52:43,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:52:43,739 INFO L87 Difference]: Start difference. First operand 8847 states and 40495 transitions. Second operand 7 states. [2020-10-16 13:52:44,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:44,039 INFO L93 Difference]: Finished difference Result 20694 states and 84261 transitions. [2020-10-16 13:52:44,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:52:44,039 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-16 13:52:44,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:44,085 INFO L225 Difference]: With dead ends: 20694 [2020-10-16 13:52:44,085 INFO L226 Difference]: Without dead ends: 20666 [2020-10-16 13:52:44,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 13:52:44,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20666 states. [2020-10-16 13:52:44,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20666 to 9115. [2020-10-16 13:52:44,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9115 states. [2020-10-16 13:52:44,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9115 states to 9115 states and 41679 transitions. [2020-10-16 13:52:44,423 INFO L78 Accepts]: Start accepts. Automaton has 9115 states and 41679 transitions. Word has length 23 [2020-10-16 13:52:44,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:44,423 INFO L481 AbstractCegarLoop]: Abstraction has 9115 states and 41679 transitions. [2020-10-16 13:52:44,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:52:44,423 INFO L276 IsEmpty]: Start isEmpty. Operand 9115 states and 41679 transitions. [2020-10-16 13:52:44,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 13:52:44,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:44,425 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:44,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:52:44,626 INFO L429 AbstractCegarLoop]: === Iteration 20 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:44,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:44,627 INFO L82 PathProgramCache]: Analyzing trace with hash -328675496, now seen corresponding path program 1 times [2020-10-16 13:52:44,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:44,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844470745] [2020-10-16 13:52:44,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:44,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:44,661 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 13:52:44,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844470745] [2020-10-16 13:52:44,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575070771] [2020-10-16 13:52:44,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:52:44,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:44,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 13:52:44,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:52:44,739 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 13:52:44,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:52:44,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-16 13:52:44,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [150933095] [2020-10-16 13:52:44,740 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:44,742 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:44,747 INFO L258 McrAutomatonBuilder]: Finished intersection with 32 states and 39 transitions. [2020-10-16 13:52:44,747 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:44,757 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:44,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:52:44,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:44,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:52:44,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:52:44,758 INFO L87 Difference]: Start difference. First operand 9115 states and 41679 transitions. Second operand 7 states. [2020-10-16 13:52:45,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:45,050 INFO L93 Difference]: Finished difference Result 21396 states and 87360 transitions. [2020-10-16 13:52:45,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:52:45,051 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-16 13:52:45,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:45,098 INFO L225 Difference]: With dead ends: 21396 [2020-10-16 13:52:45,098 INFO L226 Difference]: Without dead ends: 21359 [2020-10-16 13:52:45,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 13:52:45,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21359 states. [2020-10-16 13:52:45,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21359 to 9320. [2020-10-16 13:52:45,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9320 states. [2020-10-16 13:52:45,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9320 states to 9320 states and 42648 transitions. [2020-10-16 13:52:45,445 INFO L78 Accepts]: Start accepts. Automaton has 9320 states and 42648 transitions. Word has length 23 [2020-10-16 13:52:45,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:45,446 INFO L481 AbstractCegarLoop]: Abstraction has 9320 states and 42648 transitions. [2020-10-16 13:52:45,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:52:45,446 INFO L276 IsEmpty]: Start isEmpty. Operand 9320 states and 42648 transitions. [2020-10-16 13:52:45,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 13:52:45,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:45,449 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:45,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2020-10-16 13:52:45,662 INFO L429 AbstractCegarLoop]: === Iteration 21 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:45,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:45,662 INFO L82 PathProgramCache]: Analyzing trace with hash -150456492, now seen corresponding path program 2 times [2020-10-16 13:52:45,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:45,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115158224] [2020-10-16 13:52:45,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:45,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:45,693 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 13:52:45,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115158224] [2020-10-16 13:52:45,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:52:45,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 13:52:45,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [894831472] [2020-10-16 13:52:45,695 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:45,697 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:45,700 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 23 transitions. [2020-10-16 13:52:45,700 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:45,701 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:45,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:52:45,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:45,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:52:45,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:52:45,702 INFO L87 Difference]: Start difference. First operand 9320 states and 42648 transitions. Second operand 7 states. [2020-10-16 13:52:46,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:46,078 INFO L93 Difference]: Finished difference Result 21489 states and 87752 transitions. [2020-10-16 13:52:46,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:52:46,079 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-16 13:52:46,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:46,126 INFO L225 Difference]: With dead ends: 21489 [2020-10-16 13:52:46,126 INFO L226 Difference]: Without dead ends: 21452 [2020-10-16 13:52:46,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 13:52:46,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21452 states. [2020-10-16 13:52:46,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21452 to 9401. [2020-10-16 13:52:46,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9401 states. [2020-10-16 13:52:46,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9401 states to 9401 states and 43010 transitions. [2020-10-16 13:52:46,478 INFO L78 Accepts]: Start accepts. Automaton has 9401 states and 43010 transitions. Word has length 23 [2020-10-16 13:52:46,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:46,479 INFO L481 AbstractCegarLoop]: Abstraction has 9401 states and 43010 transitions. [2020-10-16 13:52:46,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:52:46,479 INFO L276 IsEmpty]: Start isEmpty. Operand 9401 states and 43010 transitions. [2020-10-16 13:52:46,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 13:52:46,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:46,482 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:46,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-16 13:52:46,482 INFO L429 AbstractCegarLoop]: === Iteration 22 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:46,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:46,483 INFO L82 PathProgramCache]: Analyzing trace with hash -150471558, now seen corresponding path program 2 times [2020-10-16 13:52:46,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:46,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432900078] [2020-10-16 13:52:46,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:46,521 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 13:52:46,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432900078] [2020-10-16 13:52:46,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:52:46,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 13:52:46,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1855255124] [2020-10-16 13:52:46,523 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:46,524 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:46,527 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 23 transitions. [2020-10-16 13:52:46,527 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:46,528 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:46,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:52:46,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:46,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:52:46,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:52:46,528 INFO L87 Difference]: Start difference. First operand 9401 states and 43010 transitions. Second operand 7 states. [2020-10-16 13:52:46,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:46,827 INFO L93 Difference]: Finished difference Result 21218 states and 86469 transitions. [2020-10-16 13:52:46,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:52:46,828 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-16 13:52:46,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:46,875 INFO L225 Difference]: With dead ends: 21218 [2020-10-16 13:52:46,875 INFO L226 Difference]: Without dead ends: 21181 [2020-10-16 13:52:46,876 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 13:52:46,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21181 states. [2020-10-16 13:52:47,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21181 to 9396. [2020-10-16 13:52:47,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9396 states. [2020-10-16 13:52:47,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9396 states to 9396 states and 42985 transitions. [2020-10-16 13:52:47,216 INFO L78 Accepts]: Start accepts. Automaton has 9396 states and 42985 transitions. Word has length 23 [2020-10-16 13:52:47,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:47,216 INFO L481 AbstractCegarLoop]: Abstraction has 9396 states and 42985 transitions. [2020-10-16 13:52:47,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:52:47,216 INFO L276 IsEmpty]: Start isEmpty. Operand 9396 states and 42985 transitions. [2020-10-16 13:52:47,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 13:52:47,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:47,218 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:47,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-16 13:52:47,219 INFO L429 AbstractCegarLoop]: === Iteration 23 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:47,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:47,219 INFO L82 PathProgramCache]: Analyzing trace with hash -150449920, now seen corresponding path program 2 times [2020-10-16 13:52:47,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:47,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876854485] [2020-10-16 13:52:47,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:47,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:47,263 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 13:52:47,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876854485] [2020-10-16 13:52:47,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:52:47,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 13:52:47,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1842549164] [2020-10-16 13:52:47,264 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:47,266 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:47,270 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 23 transitions. [2020-10-16 13:52:47,270 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:47,271 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:47,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:52:47,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:47,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:52:47,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:52:47,272 INFO L87 Difference]: Start difference. First operand 9396 states and 42985 transitions. Second operand 7 states. [2020-10-16 13:52:47,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:47,565 INFO L93 Difference]: Finished difference Result 21047 states and 85702 transitions. [2020-10-16 13:52:47,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:52:47,565 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-16 13:52:47,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:47,611 INFO L225 Difference]: With dead ends: 21047 [2020-10-16 13:52:47,612 INFO L226 Difference]: Without dead ends: 21010 [2020-10-16 13:52:47,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 13:52:47,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21010 states. [2020-10-16 13:52:47,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21010 to 9426. [2020-10-16 13:52:47,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9426 states. [2020-10-16 13:52:47,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9426 states to 9426 states and 43057 transitions. [2020-10-16 13:52:47,948 INFO L78 Accepts]: Start accepts. Automaton has 9426 states and 43057 transitions. Word has length 23 [2020-10-16 13:52:47,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:47,949 INFO L481 AbstractCegarLoop]: Abstraction has 9426 states and 43057 transitions. [2020-10-16 13:52:47,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:52:47,949 INFO L276 IsEmpty]: Start isEmpty. Operand 9426 states and 43057 transitions. [2020-10-16 13:52:47,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 13:52:47,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:47,952 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:47,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-16 13:52:47,952 INFO L429 AbstractCegarLoop]: === Iteration 24 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:47,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:47,952 INFO L82 PathProgramCache]: Analyzing trace with hash -156736363, now seen corresponding path program 1 times [2020-10-16 13:52:47,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:47,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986829609] [2020-10-16 13:52:47,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:47,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:48,006 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 13:52:48,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986829609] [2020-10-16 13:52:48,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393706526] [2020-10-16 13:52:48,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:52:48,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:48,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 13:52:48,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:52:48,098 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 13:52:48,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:52:48,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-16 13:52:48,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [973199193] [2020-10-16 13:52:48,099 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:48,103 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:48,120 INFO L258 McrAutomatonBuilder]: Finished intersection with 66 states and 105 transitions. [2020-10-16 13:52:48,120 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:48,274 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:48,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:52:48,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:48,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:52:48,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:52:48,276 INFO L87 Difference]: Start difference. First operand 9426 states and 43057 transitions. Second operand 9 states. [2020-10-16 13:52:49,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:49,236 INFO L93 Difference]: Finished difference Result 30145 states and 115754 transitions. [2020-10-16 13:52:49,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:52:49,237 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 13:52:49,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:49,357 INFO L225 Difference]: With dead ends: 30145 [2020-10-16 13:52:49,357 INFO L226 Difference]: Without dead ends: 30125 [2020-10-16 13:52:49,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 13:52:49,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30125 states. [2020-10-16 13:52:49,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30125 to 9338. [2020-10-16 13:52:49,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9338 states. [2020-10-16 13:52:49,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9338 states to 9338 states and 42582 transitions. [2020-10-16 13:52:49,980 INFO L78 Accepts]: Start accepts. Automaton has 9338 states and 42582 transitions. Word has length 25 [2020-10-16 13:52:49,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:49,981 INFO L481 AbstractCegarLoop]: Abstraction has 9338 states and 42582 transitions. [2020-10-16 13:52:49,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:52:49,981 INFO L276 IsEmpty]: Start isEmpty. Operand 9338 states and 42582 transitions. [2020-10-16 13:52:49,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 13:52:49,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:49,984 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:50,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-10-16 13:52:50,185 INFO L429 AbstractCegarLoop]: === Iteration 25 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:50,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:50,186 INFO L82 PathProgramCache]: Analyzing trace with hash -558170603, now seen corresponding path program 1 times [2020-10-16 13:52:50,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:50,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203416494] [2020-10-16 13:52:50,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:50,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:50,234 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 13:52:50,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203416494] [2020-10-16 13:52:50,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728628605] [2020-10-16 13:52:50,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:52:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:50,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 13:52:50,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:52:50,317 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 13:52:50,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:52:50,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-16 13:52:50,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1308510111] [2020-10-16 13:52:50,318 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:50,320 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:50,327 INFO L258 McrAutomatonBuilder]: Finished intersection with 58 states and 89 transitions. [2020-10-16 13:52:50,327 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:50,389 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:50,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:52:50,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:50,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:52:50,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:52:50,390 INFO L87 Difference]: Start difference. First operand 9338 states and 42582 transitions. Second operand 9 states. [2020-10-16 13:52:51,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:51,099 INFO L93 Difference]: Finished difference Result 29696 states and 113916 transitions. [2020-10-16 13:52:51,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:52:51,099 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 13:52:51,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:51,166 INFO L225 Difference]: With dead ends: 29696 [2020-10-16 13:52:51,166 INFO L226 Difference]: Without dead ends: 29676 [2020-10-16 13:52:51,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 13:52:51,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29676 states. [2020-10-16 13:52:51,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29676 to 9291. [2020-10-16 13:52:51,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9291 states. [2020-10-16 13:52:51,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9291 states to 9291 states and 42295 transitions. [2020-10-16 13:52:51,593 INFO L78 Accepts]: Start accepts. Automaton has 9291 states and 42295 transitions. Word has length 25 [2020-10-16 13:52:51,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:51,593 INFO L481 AbstractCegarLoop]: Abstraction has 9291 states and 42295 transitions. [2020-10-16 13:52:51,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:52:51,593 INFO L276 IsEmpty]: Start isEmpty. Operand 9291 states and 42295 transitions. [2020-10-16 13:52:51,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 13:52:51,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:51,597 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:51,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-10-16 13:52:51,809 INFO L429 AbstractCegarLoop]: === Iteration 26 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:51,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:51,810 INFO L82 PathProgramCache]: Analyzing trace with hash -379966665, now seen corresponding path program 2 times [2020-10-16 13:52:51,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:51,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845651712] [2020-10-16 13:52:51,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:51,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:51,862 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 13:52:51,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845651712] [2020-10-16 13:52:51,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742484685] [2020-10-16 13:52:51,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:52:51,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 13:52:51,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 13:52:51,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 13:52:51,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:52:51,963 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 13:52:51,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:52:51,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-16 13:52:51,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [240202000] [2020-10-16 13:52:51,964 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:51,966 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:52,057 INFO L258 McrAutomatonBuilder]: Finished intersection with 50 states and 73 transitions. [2020-10-16 13:52:52,058 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:52,101 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:52,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:52:52,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:52,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:52:52,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:52:52,102 INFO L87 Difference]: Start difference. First operand 9291 states and 42295 transitions. Second operand 9 states. [2020-10-16 13:52:52,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:52,768 INFO L93 Difference]: Finished difference Result 29267 states and 112142 transitions. [2020-10-16 13:52:52,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:52:52,769 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 13:52:52,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:52,839 INFO L225 Difference]: With dead ends: 29267 [2020-10-16 13:52:52,839 INFO L226 Difference]: Without dead ends: 29245 [2020-10-16 13:52:52,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 13:52:52,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29245 states. [2020-10-16 13:52:53,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29245 to 9288. [2020-10-16 13:52:53,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9288 states. [2020-10-16 13:52:53,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9288 states to 9288 states and 42242 transitions. [2020-10-16 13:52:53,265 INFO L78 Accepts]: Start accepts. Automaton has 9288 states and 42242 transitions. Word has length 25 [2020-10-16 13:52:53,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:53,266 INFO L481 AbstractCegarLoop]: Abstraction has 9288 states and 42242 transitions. [2020-10-16 13:52:53,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:52:53,266 INFO L276 IsEmpty]: Start isEmpty. Operand 9288 states and 42242 transitions. [2020-10-16 13:52:53,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 13:52:53,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:53,269 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:53,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-10-16 13:52:53,470 INFO L429 AbstractCegarLoop]: === Iteration 27 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:53,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:53,470 INFO L82 PathProgramCache]: Analyzing trace with hash -379945027, now seen corresponding path program 2 times [2020-10-16 13:52:53,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:53,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486393061] [2020-10-16 13:52:53,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:53,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:53,524 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 13:52:53,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486393061] [2020-10-16 13:52:53,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601403435] [2020-10-16 13:52:53,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:52:53,600 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 13:52:53,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 13:52:53,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 13:52:53,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:52:53,606 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 13:52:53,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:52:53,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-16 13:52:53,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1992703843] [2020-10-16 13:52:53,607 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:53,609 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:53,618 INFO L258 McrAutomatonBuilder]: Finished intersection with 50 states and 73 transitions. [2020-10-16 13:52:53,619 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:53,680 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:53,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:52:53,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:53,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:52:53,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:52:53,681 INFO L87 Difference]: Start difference. First operand 9288 states and 42242 transitions. Second operand 9 states. [2020-10-16 13:52:54,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:54,320 INFO L93 Difference]: Finished difference Result 28920 states and 110796 transitions. [2020-10-16 13:52:54,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:52:54,321 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 13:52:54,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:54,384 INFO L225 Difference]: With dead ends: 28920 [2020-10-16 13:52:54,384 INFO L226 Difference]: Without dead ends: 28898 [2020-10-16 13:52:54,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 13:52:54,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28898 states. [2020-10-16 13:52:54,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28898 to 9176. [2020-10-16 13:52:54,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9176 states. [2020-10-16 13:52:54,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9176 states to 9176 states and 41695 transitions. [2020-10-16 13:52:54,806 INFO L78 Accepts]: Start accepts. Automaton has 9176 states and 41695 transitions. Word has length 25 [2020-10-16 13:52:54,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:54,807 INFO L481 AbstractCegarLoop]: Abstraction has 9176 states and 41695 transitions. [2020-10-16 13:52:54,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:52:54,807 INFO L276 IsEmpty]: Start isEmpty. Operand 9176 states and 41695 transitions. [2020-10-16 13:52:54,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 13:52:54,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:54,811 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:55,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:52:55,012 INFO L429 AbstractCegarLoop]: === Iteration 28 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:55,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:55,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1211690581, now seen corresponding path program 3 times [2020-10-16 13:52:55,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:55,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988803361] [2020-10-16 13:52:55,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:55,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:55,062 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 13:52:55,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988803361] [2020-10-16 13:52:55,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209839000] [2020-10-16 13:52:55,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:52:55,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-16 13:52:55,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 13:52:55,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 13:52:55,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:52:55,143 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 13:52:55,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:52:55,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-16 13:52:55,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1305503642] [2020-10-16 13:52:55,144 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:55,146 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:55,153 INFO L258 McrAutomatonBuilder]: Finished intersection with 58 states and 89 transitions. [2020-10-16 13:52:55,154 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:55,202 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:55,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:52:55,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:55,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:52:55,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:52:55,203 INFO L87 Difference]: Start difference. First operand 9176 states and 41695 transitions. Second operand 9 states. [2020-10-16 13:52:55,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:55,985 INFO L93 Difference]: Finished difference Result 29038 states and 111216 transitions. [2020-10-16 13:52:55,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:52:55,986 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 13:52:55,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:56,054 INFO L225 Difference]: With dead ends: 29038 [2020-10-16 13:52:56,054 INFO L226 Difference]: Without dead ends: 29018 [2020-10-16 13:52:56,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 13:52:56,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29018 states. [2020-10-16 13:52:56,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29018 to 9000. [2020-10-16 13:52:56,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9000 states. [2020-10-16 13:52:56,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9000 states to 9000 states and 40897 transitions. [2020-10-16 13:52:56,446 INFO L78 Accepts]: Start accepts. Automaton has 9000 states and 40897 transitions. Word has length 25 [2020-10-16 13:52:56,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:56,447 INFO L481 AbstractCegarLoop]: Abstraction has 9000 states and 40897 transitions. [2020-10-16 13:52:56,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:52:56,447 INFO L276 IsEmpty]: Start isEmpty. Operand 9000 states and 40897 transitions. [2020-10-16 13:52:56,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 13:52:56,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:56,450 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:56,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-10-16 13:52:56,651 INFO L429 AbstractCegarLoop]: === Iteration 29 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:56,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:56,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1201691221, now seen corresponding path program 4 times [2020-10-16 13:52:56,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:56,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319006540] [2020-10-16 13:52:56,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:56,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:56,698 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 13:52:56,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319006540] [2020-10-16 13:52:56,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203253069] [2020-10-16 13:52:56,698 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:52:56,774 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 13:52:56,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 13:52:56,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 13:52:56,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:52:56,783 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 13:52:56,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:52:56,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-16 13:52:56,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1318639842] [2020-10-16 13:52:56,784 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:56,787 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:56,796 INFO L258 McrAutomatonBuilder]: Finished intersection with 42 states and 57 transitions. [2020-10-16 13:52:56,796 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:56,817 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:56,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:52:56,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:56,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:52:56,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:52:56,817 INFO L87 Difference]: Start difference. First operand 9000 states and 40897 transitions. Second operand 9 states. [2020-10-16 13:52:57,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:57,511 INFO L93 Difference]: Finished difference Result 29283 states and 112236 transitions. [2020-10-16 13:52:57,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:52:57,511 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 13:52:57,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:57,574 INFO L225 Difference]: With dead ends: 29283 [2020-10-16 13:52:57,574 INFO L226 Difference]: Without dead ends: 29261 [2020-10-16 13:52:57,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 13:52:57,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29261 states. [2020-10-16 13:52:57,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29261 to 8997. [2020-10-16 13:52:57,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8997 states. [2020-10-16 13:52:57,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8997 states to 8997 states and 40842 transitions. [2020-10-16 13:52:57,991 INFO L78 Accepts]: Start accepts. Automaton has 8997 states and 40842 transitions. Word has length 25 [2020-10-16 13:52:57,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:57,992 INFO L481 AbstractCegarLoop]: Abstraction has 8997 states and 40842 transitions. [2020-10-16 13:52:57,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:52:57,992 INFO L276 IsEmpty]: Start isEmpty. Operand 8997 states and 40842 transitions. [2020-10-16 13:52:57,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 13:52:57,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:57,995 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:58,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:52:58,196 INFO L429 AbstractCegarLoop]: === Iteration 30 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:58,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:58,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1201697793, now seen corresponding path program 1 times [2020-10-16 13:52:58,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:58,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889483223] [2020-10-16 13:52:58,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:58,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:58,248 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 13:52:58,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889483223] [2020-10-16 13:52:58,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661038174] [2020-10-16 13:52:58,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:52:58,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:58,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 13:52:58,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:52:58,340 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 13:52:58,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:52:58,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-16 13:52:58,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1553426478] [2020-10-16 13:52:58,341 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:58,343 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:58,351 INFO L258 McrAutomatonBuilder]: Finished intersection with 42 states and 57 transitions. [2020-10-16 13:52:58,352 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:58,369 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:58,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:52:58,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:58,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:52:58,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:52:58,370 INFO L87 Difference]: Start difference. First operand 8997 states and 40842 transitions. Second operand 9 states. [2020-10-16 13:52:59,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:59,070 INFO L93 Difference]: Finished difference Result 29105 states and 111801 transitions. [2020-10-16 13:52:59,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:52:59,070 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 13:52:59,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:59,134 INFO L225 Difference]: With dead ends: 29105 [2020-10-16 13:52:59,134 INFO L226 Difference]: Without dead ends: 29085 [2020-10-16 13:52:59,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 13:52:59,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29085 states. [2020-10-16 13:52:59,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29085 to 8955. [2020-10-16 13:52:59,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8955 states. [2020-10-16 13:52:59,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8955 states to 8955 states and 40593 transitions. [2020-10-16 13:52:59,702 INFO L78 Accepts]: Start accepts. Automaton has 8955 states and 40593 transitions. Word has length 25 [2020-10-16 13:52:59,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:59,703 INFO L481 AbstractCegarLoop]: Abstraction has 8955 states and 40593 transitions. [2020-10-16 13:52:59,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:52:59,703 INFO L276 IsEmpty]: Start isEmpty. Operand 8955 states and 40593 transitions. [2020-10-16 13:52:59,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 13:52:59,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:59,706 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:59,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2020-10-16 13:52:59,907 INFO L429 AbstractCegarLoop]: === Iteration 31 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:59,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:59,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1218006273, now seen corresponding path program 2 times [2020-10-16 13:52:59,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:59,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555939506] [2020-10-16 13:52:59,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:59,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:59,957 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 13:52:59,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555939506] [2020-10-16 13:52:59,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206551603] [2020-10-16 13:52:59,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:53:00,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 13:53:00,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 13:53:00,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 13:53:00,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:53:00,055 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 13:53:00,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:53:00,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-16 13:53:00,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1359212327] [2020-10-16 13:53:00,056 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:53:00,060 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:53:00,074 INFO L258 McrAutomatonBuilder]: Finished intersection with 50 states and 73 transitions. [2020-10-16 13:53:00,074 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:53:00,122 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:53:00,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:53:00,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:53:00,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:53:00,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:53:00,123 INFO L87 Difference]: Start difference. First operand 8955 states and 40593 transitions. Second operand 9 states. [2020-10-16 13:53:01,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:53:01,123 INFO L93 Difference]: Finished difference Result 28806 states and 110558 transitions. [2020-10-16 13:53:01,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:53:01,124 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 13:53:01,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:53:01,219 INFO L225 Difference]: With dead ends: 28806 [2020-10-16 13:53:01,219 INFO L226 Difference]: Without dead ends: 28779 [2020-10-16 13:53:01,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 13:53:01,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28779 states. [2020-10-16 13:53:01,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28779 to 8841. [2020-10-16 13:53:01,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8841 states. [2020-10-16 13:53:01,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8841 states to 8841 states and 40062 transitions. [2020-10-16 13:53:01,886 INFO L78 Accepts]: Start accepts. Automaton has 8841 states and 40062 transitions. Word has length 25 [2020-10-16 13:53:01,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:53:01,892 INFO L481 AbstractCegarLoop]: Abstraction has 8841 states and 40062 transitions. [2020-10-16 13:53:01,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:53:01,892 INFO L276 IsEmpty]: Start isEmpty. Operand 8841 states and 40062 transitions. [2020-10-16 13:53:01,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 13:53:01,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:53:01,898 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:53:02,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:53:02,113 INFO L429 AbstractCegarLoop]: === Iteration 32 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:53:02,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:53:02,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1980442581, now seen corresponding path program 3 times [2020-10-16 13:53:02,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:53:02,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335421481] [2020-10-16 13:53:02,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:53:02,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:53:02,187 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 13:53:02,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335421481] [2020-10-16 13:53:02,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400631674] [2020-10-16 13:53:02,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:53:02,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 13:53:02,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 13:53:02,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 13:53:02,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:53:02,309 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 13:53:02,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:53:02,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-16 13:53:02,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [760765231] [2020-10-16 13:53:02,311 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:53:02,314 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:53:02,322 INFO L258 McrAutomatonBuilder]: Finished intersection with 42 states and 57 transitions. [2020-10-16 13:53:02,322 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:53:02,355 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:53:02,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:53:02,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:53:02,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:53:02,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:53:02,356 INFO L87 Difference]: Start difference. First operand 8841 states and 40062 transitions. Second operand 9 states. [2020-10-16 13:53:03,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:53:03,022 INFO L93 Difference]: Finished difference Result 28636 states and 109852 transitions. [2020-10-16 13:53:03,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:53:03,022 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 13:53:03,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:53:03,084 INFO L225 Difference]: With dead ends: 28636 [2020-10-16 13:53:03,085 INFO L226 Difference]: Without dead ends: 28616 [2020-10-16 13:53:03,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 13:53:03,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28616 states. [2020-10-16 13:53:03,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28616 to 8702. [2020-10-16 13:53:03,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8702 states. [2020-10-16 13:53:03,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8702 states to 8702 states and 39438 transitions. [2020-10-16 13:53:03,483 INFO L78 Accepts]: Start accepts. Automaton has 8702 states and 39438 transitions. Word has length 25 [2020-10-16 13:53:03,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:53:03,483 INFO L481 AbstractCegarLoop]: Abstraction has 8702 states and 39438 transitions. [2020-10-16 13:53:03,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:53:03,484 INFO L276 IsEmpty]: Start isEmpty. Operand 8702 states and 39438 transitions. [2020-10-16 13:53:03,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 13:53:03,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:53:03,487 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:53:03,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2020-10-16 13:53:03,689 INFO L429 AbstractCegarLoop]: === Iteration 33 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:53:03,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:53:03,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1965964155, now seen corresponding path program 3 times [2020-10-16 13:53:03,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:53:03,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575722775] [2020-10-16 13:53:03,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:53:03,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:53:03,738 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 13:53:03,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575722775] [2020-10-16 13:53:03,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446544358] [2020-10-16 13:53:03,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:53:03,810 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 13:53:03,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 13:53:03,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 13:53:03,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:53:03,816 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 13:53:03,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:53:03,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-16 13:53:03,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [315070124] [2020-10-16 13:53:03,817 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:53:03,820 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:53:03,827 INFO L258 McrAutomatonBuilder]: Finished intersection with 42 states and 57 transitions. [2020-10-16 13:53:03,828 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:53:03,851 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:53:03,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:53:03,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:53:03,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:53:03,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:53:03,852 INFO L87 Difference]: Start difference. First operand 8702 states and 39438 transitions. Second operand 9 states. [2020-10-16 13:53:04,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:53:04,642 INFO L93 Difference]: Finished difference Result 28297 states and 108461 transitions. [2020-10-16 13:53:04,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:53:04,643 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 13:53:04,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:53:04,704 INFO L225 Difference]: With dead ends: 28297 [2020-10-16 13:53:04,704 INFO L226 Difference]: Without dead ends: 28277 [2020-10-16 13:53:04,705 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 13:53:04,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28277 states. [2020-10-16 13:53:05,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28277 to 8596. [2020-10-16 13:53:05,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8596 states. [2020-10-16 13:53:05,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 38978 transitions. [2020-10-16 13:53:05,095 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 38978 transitions. Word has length 25 [2020-10-16 13:53:05,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:53:05,095 INFO L481 AbstractCegarLoop]: Abstraction has 8596 states and 38978 transitions. [2020-10-16 13:53:05,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:53:05,095 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 38978 transitions. [2020-10-16 13:53:05,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 13:53:05,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:53:05,099 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:53:05,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:53:05,306 INFO L429 AbstractCegarLoop]: === Iteration 34 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:53:05,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:53:05,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1970443221, now seen corresponding path program 4 times [2020-10-16 13:53:05,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:53:05,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799200313] [2020-10-16 13:53:05,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:53:05,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:53:05,355 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 13:53:05,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799200313] [2020-10-16 13:53:05,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863920121] [2020-10-16 13:53:05,355 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:53:05,438 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 13:53:05,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 13:53:05,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 13:53:05,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:53:05,444 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 13:53:05,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:53:05,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-16 13:53:05,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [751557128] [2020-10-16 13:53:05,445 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:53:05,447 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:53:05,454 INFO L258 McrAutomatonBuilder]: Finished intersection with 34 states and 41 transitions. [2020-10-16 13:53:05,455 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:53:05,468 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:53:05,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:53:05,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:53:05,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:53:05,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:53:05,470 INFO L87 Difference]: Start difference. First operand 8596 states and 38978 transitions. Second operand 9 states. [2020-10-16 13:53:06,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:53:06,506 INFO L93 Difference]: Finished difference Result 28565 states and 109596 transitions. [2020-10-16 13:53:06,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:53:06,506 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 13:53:06,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:53:06,624 INFO L225 Difference]: With dead ends: 28565 [2020-10-16 13:53:06,625 INFO L226 Difference]: Without dead ends: 28538 [2020-10-16 13:53:06,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 13:53:06,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28538 states. [2020-10-16 13:53:07,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28538 to 8563. [2020-10-16 13:53:07,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8563 states. [2020-10-16 13:53:07,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8563 states to 8563 states and 38809 transitions. [2020-10-16 13:53:07,399 INFO L78 Accepts]: Start accepts. Automaton has 8563 states and 38809 transitions. Word has length 25 [2020-10-16 13:53:07,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:53:07,400 INFO L481 AbstractCegarLoop]: Abstraction has 8563 states and 38809 transitions. [2020-10-16 13:53:07,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:53:07,400 INFO L276 IsEmpty]: Start isEmpty. Operand 8563 states and 38809 transitions. [2020-10-16 13:53:07,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 13:53:07,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:53:07,404 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:53:07,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2020-10-16 13:53:07,619 INFO L429 AbstractCegarLoop]: === Iteration 35 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:53:07,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:53:07,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1970428155, now seen corresponding path program 4 times [2020-10-16 13:53:07,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:53:07,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722649996] [2020-10-16 13:53:07,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:53:07,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:53:07,673 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 13:53:07,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722649996] [2020-10-16 13:53:07,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34523042] [2020-10-16 13:53:07,674 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:53:07,759 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 13:53:07,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 13:53:07,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 13:53:07,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:53:07,768 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 13:53:07,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:53:07,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-16 13:53:07,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1913017531] [2020-10-16 13:53:07,770 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:53:07,773 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:53:07,784 INFO L258 McrAutomatonBuilder]: Finished intersection with 34 states and 41 transitions. [2020-10-16 13:53:07,784 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:53:07,801 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:53:07,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:53:07,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:53:07,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:53:07,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:53:07,802 INFO L87 Difference]: Start difference. First operand 8563 states and 38809 transitions. Second operand 9 states. [2020-10-16 13:53:08,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:53:08,476 INFO L93 Difference]: Finished difference Result 28213 states and 108237 transitions. [2020-10-16 13:53:08,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:53:08,476 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 13:53:08,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:53:08,540 INFO L225 Difference]: With dead ends: 28213 [2020-10-16 13:53:08,540 INFO L226 Difference]: Without dead ends: 28186 [2020-10-16 13:53:08,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 13:53:08,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28186 states. [2020-10-16 13:53:08,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28186 to 8421. [2020-10-16 13:53:08,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8421 states. [2020-10-16 13:53:08,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8421 states to 8421 states and 38146 transitions. [2020-10-16 13:53:08,932 INFO L78 Accepts]: Start accepts. Automaton has 8421 states and 38146 transitions. Word has length 25 [2020-10-16 13:53:08,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:53:08,932 INFO L481 AbstractCegarLoop]: Abstraction has 8421 states and 38146 transitions. [2020-10-16 13:53:08,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:53:08,933 INFO L276 IsEmpty]: Start isEmpty. Operand 8421 states and 38146 transitions. [2020-10-16 13:53:08,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 13:53:08,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:53:08,936 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:53:09,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:53:09,136 INFO L429 AbstractCegarLoop]: === Iteration 36 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:53:09,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:53:09,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1943046054, now seen corresponding path program 1 times [2020-10-16 13:53:09,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:53:09,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905818470] [2020-10-16 13:53:09,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:53:09,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:53:09,161 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-16 13:53:09,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905818470] [2020-10-16 13:53:09,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:53:09,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:53:09,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1698943816] [2020-10-16 13:53:09,162 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:53:09,165 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:53:09,169 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-10-16 13:53:09,169 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:53:09,170 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:53:09,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:53:09,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:53:09,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:53:09,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:53:09,171 INFO L87 Difference]: Start difference. First operand 8421 states and 38146 transitions. Second operand 5 states. [2020-10-16 13:53:09,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:53:09,419 INFO L93 Difference]: Finished difference Result 13647 states and 59401 transitions. [2020-10-16 13:53:09,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:53:09,419 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-16 13:53:09,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:53:09,463 INFO L225 Difference]: With dead ends: 13647 [2020-10-16 13:53:09,463 INFO L226 Difference]: Without dead ends: 13615 [2020-10-16 13:53:09,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:53:09,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13615 states. [2020-10-16 13:53:09,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13615 to 9928. [2020-10-16 13:53:09,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9928 states. [2020-10-16 13:53:09,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9928 states to 9928 states and 44651 transitions. [2020-10-16 13:53:09,791 INFO L78 Accepts]: Start accepts. Automaton has 9928 states and 44651 transitions. Word has length 25 [2020-10-16 13:53:09,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:53:09,791 INFO L481 AbstractCegarLoop]: Abstraction has 9928 states and 44651 transitions. [2020-10-16 13:53:09,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:53:09,791 INFO L276 IsEmpty]: Start isEmpty. Operand 9928 states and 44651 transitions. [2020-10-16 13:53:09,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 13:53:09,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:53:09,795 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:53:09,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-16 13:53:09,795 INFO L429 AbstractCegarLoop]: === Iteration 37 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:53:09,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:53:09,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1440199159, now seen corresponding path program 5 times [2020-10-16 13:53:09,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:53:09,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440578080] [2020-10-16 13:53:09,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:53:09,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:53:09,847 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 13:53:09,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440578080] [2020-10-16 13:53:09,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:53:09,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 13:53:09,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1558153499] [2020-10-16 13:53:09,848 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:53:09,850 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:53:09,855 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-10-16 13:53:09,855 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:53:09,855 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:53:09,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:53:09,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:53:09,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:53:09,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:53:09,856 INFO L87 Difference]: Start difference. First operand 9928 states and 44651 transitions. Second operand 9 states. [2020-10-16 13:53:10,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:53:10,527 INFO L93 Difference]: Finished difference Result 31816 states and 123346 transitions. [2020-10-16 13:53:10,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:53:10,527 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 13:53:10,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:53:10,596 INFO L225 Difference]: With dead ends: 31816 [2020-10-16 13:53:10,596 INFO L226 Difference]: Without dead ends: 31790 [2020-10-16 13:53:10,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 13:53:10,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31790 states. [2020-10-16 13:53:11,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31790 to 9766. [2020-10-16 13:53:11,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9766 states. [2020-10-16 13:53:11,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9766 states to 9766 states and 43873 transitions. [2020-10-16 13:53:11,069 INFO L78 Accepts]: Start accepts. Automaton has 9766 states and 43873 transitions. Word has length 25 [2020-10-16 13:53:11,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:53:11,069 INFO L481 AbstractCegarLoop]: Abstraction has 9766 states and 43873 transitions. [2020-10-16 13:53:11,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:53:11,069 INFO L276 IsEmpty]: Start isEmpty. Operand 9766 states and 43873 transitions. [2020-10-16 13:53:11,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 13:53:11,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:53:11,072 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:53:11,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-16 13:53:11,072 INFO L429 AbstractCegarLoop]: === Iteration 38 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:53:11,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:53:11,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1440220797, now seen corresponding path program 5 times [2020-10-16 13:53:11,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:53:11,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938918430] [2020-10-16 13:53:11,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:53:11,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:53:11,124 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 13:53:11,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938918430] [2020-10-16 13:53:11,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:53:11,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 13:53:11,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1812191871] [2020-10-16 13:53:11,125 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:53:11,128 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:53:11,132 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-10-16 13:53:11,132 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:53:11,132 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:53:11,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:53:11,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:53:11,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:53:11,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:53:11,133 INFO L87 Difference]: Start difference. First operand 9766 states and 43873 transitions. Second operand 9 states. [2020-10-16 13:53:11,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:53:11,792 INFO L93 Difference]: Finished difference Result 31277 states and 121098 transitions. [2020-10-16 13:53:11,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:53:11,793 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 13:53:11,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:53:11,860 INFO L225 Difference]: With dead ends: 31277 [2020-10-16 13:53:11,860 INFO L226 Difference]: Without dead ends: 31251 [2020-10-16 13:53:11,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 13:53:12,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31251 states. [2020-10-16 13:53:12,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31251 to 9592. [2020-10-16 13:53:12,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9592 states. [2020-10-16 13:53:12,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9592 states to 9592 states and 43051 transitions. [2020-10-16 13:53:12,311 INFO L78 Accepts]: Start accepts. Automaton has 9592 states and 43051 transitions. Word has length 25 [2020-10-16 13:53:12,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:53:12,311 INFO L481 AbstractCegarLoop]: Abstraction has 9592 states and 43051 transitions. [2020-10-16 13:53:12,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:53:12,311 INFO L276 IsEmpty]: Start isEmpty. Operand 9592 states and 43051 transitions. [2020-10-16 13:53:12,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 13:53:12,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:53:12,314 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:53:12,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-16 13:53:12,314 INFO L429 AbstractCegarLoop]: === Iteration 39 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:53:12,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:53:12,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1425735799, now seen corresponding path program 6 times [2020-10-16 13:53:12,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:53:12,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978734428] [2020-10-16 13:53:12,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:53:12,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:53:12,369 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 13:53:12,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978734428] [2020-10-16 13:53:12,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:53:12,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 13:53:12,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [871359152] [2020-10-16 13:53:12,370 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:53:12,373 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:53:12,378 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-10-16 13:53:12,379 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:53:12,379 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:53:12,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:53:12,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:53:12,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:53:12,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:53:12,380 INFO L87 Difference]: Start difference. First operand 9592 states and 43051 transitions. Second operand 9 states. [2020-10-16 13:53:13,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:53:13,357 INFO L93 Difference]: Finished difference Result 30952 states and 119650 transitions. [2020-10-16 13:53:13,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:53:13,358 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 13:53:13,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:53:13,494 INFO L225 Difference]: With dead ends: 30952 [2020-10-16 13:53:13,495 INFO L226 Difference]: Without dead ends: 30919 [2020-10-16 13:53:13,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 13:53:13,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30919 states. [2020-10-16 13:53:14,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30919 to 9246. [2020-10-16 13:53:14,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9246 states. [2020-10-16 13:53:14,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9246 states to 9246 states and 41509 transitions. [2020-10-16 13:53:14,245 INFO L78 Accepts]: Start accepts. Automaton has 9246 states and 41509 transitions. Word has length 25 [2020-10-16 13:53:14,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:53:14,245 INFO L481 AbstractCegarLoop]: Abstraction has 9246 states and 41509 transitions. [2020-10-16 13:53:14,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:53:14,245 INFO L276 IsEmpty]: Start isEmpty. Operand 9246 states and 41509 transitions. [2020-10-16 13:53:14,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 13:53:14,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:53:14,248 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:53:14,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-16 13:53:14,248 INFO L429 AbstractCegarLoop]: === Iteration 40 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:53:14,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:53:14,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1425742371, now seen corresponding path program 5 times [2020-10-16 13:53:14,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:53:14,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322840943] [2020-10-16 13:53:14,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:53:14,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:53:14,297 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 13:53:14,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322840943] [2020-10-16 13:53:14,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:53:14,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 13:53:14,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [408599210] [2020-10-16 13:53:14,298 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:53:14,300 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:53:14,304 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-10-16 13:53:14,304 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:53:14,305 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:53:14,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:53:14,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:53:14,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:53:14,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:53:14,305 INFO L87 Difference]: Start difference. First operand 9246 states and 41509 transitions. Second operand 9 states. [2020-10-16 13:53:15,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:53:15,033 INFO L93 Difference]: Finished difference Result 30541 states and 117947 transitions. [2020-10-16 13:53:15,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:53:15,034 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 13:53:15,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:53:15,102 INFO L225 Difference]: With dead ends: 30541 [2020-10-16 13:53:15,102 INFO L226 Difference]: Without dead ends: 30515 [2020-10-16 13:53:15,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 13:53:15,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30515 states. [2020-10-16 13:53:15,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30515 to 9136. [2020-10-16 13:53:15,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9136 states. [2020-10-16 13:53:15,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9136 states to 9136 states and 40999 transitions. [2020-10-16 13:53:15,543 INFO L78 Accepts]: Start accepts. Automaton has 9136 states and 40999 transitions. Word has length 25 [2020-10-16 13:53:15,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:53:15,544 INFO L481 AbstractCegarLoop]: Abstraction has 9136 states and 40999 transitions. [2020-10-16 13:53:15,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:53:15,544 INFO L276 IsEmpty]: Start isEmpty. Operand 9136 states and 40999 transitions. [2020-10-16 13:53:15,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 13:53:15,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:53:15,546 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:53:15,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-16 13:53:15,547 INFO L429 AbstractCegarLoop]: === Iteration 41 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:53:15,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:53:15,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1446529917, now seen corresponding path program 6 times [2020-10-16 13:53:15,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:53:15,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989200822] [2020-10-16 13:53:15,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:53:15,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:53:15,596 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 13:53:15,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989200822] [2020-10-16 13:53:15,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:53:15,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 13:53:15,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1399485598] [2020-10-16 13:53:15,598 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:53:15,600 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:53:15,603 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-10-16 13:53:15,604 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:53:15,604 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:53:15,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:53:15,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:53:15,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:53:15,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:53:15,605 INFO L87 Difference]: Start difference. First operand 9136 states and 40999 transitions. Second operand 9 states. [2020-10-16 13:53:16,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:53:16,286 INFO L93 Difference]: Finished difference Result 30263 states and 116773 transitions. [2020-10-16 13:53:16,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:53:16,286 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 13:53:16,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:53:16,353 INFO L225 Difference]: With dead ends: 30263 [2020-10-16 13:53:16,353 INFO L226 Difference]: Without dead ends: 30230 [2020-10-16 13:53:16,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 13:53:16,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30230 states. [2020-10-16 13:53:16,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30230 to 8877. [2020-10-16 13:53:16,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8877 states. [2020-10-16 13:53:16,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8877 states to 8877 states and 39872 transitions. [2020-10-16 13:53:16,790 INFO L78 Accepts]: Start accepts. Automaton has 8877 states and 39872 transitions. Word has length 25 [2020-10-16 13:53:16,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:53:16,790 INFO L481 AbstractCegarLoop]: Abstraction has 8877 states and 39872 transitions. [2020-10-16 13:53:16,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:53:16,790 INFO L276 IsEmpty]: Start isEmpty. Operand 8877 states and 39872 transitions. [2020-10-16 13:53:16,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 13:53:16,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:53:16,793 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:53:16,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-10-16 13:53:16,793 INFO L429 AbstractCegarLoop]: === Iteration 42 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:53:16,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:53:16,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1446514851, now seen corresponding path program 6 times [2020-10-16 13:53:16,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:53:16,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917839390] [2020-10-16 13:53:16,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:53:16,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:53:16,847 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 13:53:16,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917839390] [2020-10-16 13:53:16,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:53:16,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 13:53:16,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [36569727] [2020-10-16 13:53:16,848 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:53:16,851 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:53:16,856 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-10-16 13:53:16,857 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:53:16,857 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:53:16,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:53:16,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:53:16,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:53:16,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:53:16,858 INFO L87 Difference]: Start difference. First operand 8877 states and 39872 transitions. Second operand 9 states. [2020-10-16 13:53:17,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:53:17,610 INFO L93 Difference]: Finished difference Result 29856 states and 115140 transitions. [2020-10-16 13:53:17,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:53:17,610 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 13:53:17,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:53:17,676 INFO L225 Difference]: With dead ends: 29856 [2020-10-16 13:53:17,676 INFO L226 Difference]: Without dead ends: 29823 [2020-10-16 13:53:17,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 13:53:17,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29823 states. [2020-10-16 13:53:18,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29823 to 8560. [2020-10-16 13:53:18,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8560 states. [2020-10-16 13:53:18,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8560 states to 8560 states and 38495 transitions. [2020-10-16 13:53:18,241 INFO L78 Accepts]: Start accepts. Automaton has 8560 states and 38495 transitions. Word has length 25 [2020-10-16 13:53:18,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:53:18,241 INFO L481 AbstractCegarLoop]: Abstraction has 8560 states and 38495 transitions. [2020-10-16 13:53:18,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:53:18,241 INFO L276 IsEmpty]: Start isEmpty. Operand 8560 states and 38495 transitions. [2020-10-16 13:53:18,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-16 13:53:18,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:53:18,245 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:53:18,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-10-16 13:53:18,245 INFO L429 AbstractCegarLoop]: === Iteration 43 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:53:18,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:53:18,245 INFO L82 PathProgramCache]: Analyzing trace with hash -110415564, now seen corresponding path program 1 times [2020-10-16 13:53:18,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:53:18,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101232058] [2020-10-16 13:53:18,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:53:18,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 13:53:18,253 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 13:53:18,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 13:53:18,259 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 13:53:18,266 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 13:53:18,266 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 13:53:18,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-10-16 13:53:18,267 WARN L371 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 13:53:18,267 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-10-16 13:53:18,281 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,281 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,281 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,281 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,282 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,282 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,282 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,282 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,282 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,282 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,282 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,283 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,283 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,283 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,283 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,283 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,283 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,283 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,283 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,284 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,284 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,284 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,284 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,284 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,284 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,284 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,284 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,285 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,285 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,285 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,285 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,285 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,285 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,285 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,286 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,286 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,286 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,286 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,286 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,286 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,286 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,287 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,287 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,287 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,287 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,287 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,287 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,287 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,287 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,288 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,288 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,288 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,288 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,288 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,288 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,288 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,289 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,289 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,289 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,289 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,289 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,289 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,289 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,290 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,290 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,290 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,290 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,290 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,290 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,290 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,291 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,291 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,291 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,291 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,291 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,291 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,292 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,292 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,292 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,292 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,292 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,292 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,292 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,293 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,293 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,293 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,293 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,293 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,293 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,293 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,294 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,294 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,294 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,294 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,294 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,294 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,294 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,294 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,295 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,295 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,295 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,295 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,295 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,295 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,295 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,296 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,296 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,296 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,296 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,296 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,296 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,296 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,296 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,297 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,297 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,297 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,297 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,297 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,297 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,297 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,298 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,298 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,298 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,298 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,298 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,298 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,299 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,299 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,299 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,299 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,299 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,310 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,311 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,311 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,311 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,311 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,312 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,312 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,312 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,313 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,313 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,314 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,314 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,314 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,314 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,314 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,315 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,315 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,315 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,316 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,316 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,317 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,317 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,317 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,317 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,317 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,318 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,319 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,319 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,319 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,319 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,319 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,320 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,320 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,321 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,321 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,321 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,321 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,322 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,322 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,322 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,322 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,323 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,323 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,324 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,324 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,324 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,324 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,324 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,324 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,325 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,325 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,326 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,326 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,326 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,326 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,327 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,327 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,327 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,328 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,328 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,328 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:53:18,329 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 13:53:18,329 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-10-16 13:53:18,329 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 13:53:18,329 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 13:53:18,329 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 13:53:18,329 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 13:53:18,330 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 13:53:18,330 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 13:53:18,330 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 13:53:18,330 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 13:53:18,331 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 13:53:18,331 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 141 transitions, 402 flow [2020-10-16 13:53:18,331 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 160 places, 141 transitions, 402 flow [2020-10-16 13:53:18,331 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 160 places, 141 transitions, 402 flow [2020-10-16 13:53:18,353 INFO L129 PetriNetUnfolder]: 8/171 cut-off events. [2020-10-16 13:53:18,353 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-10-16 13:53:18,355 INFO L80 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 171 events. 8/171 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 310 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 206. Up to 14 conditions per place. [2020-10-16 13:53:18,361 INFO L117 LiptonReduction]: Number of co-enabled transitions 3612 [2020-10-16 13:53:20,105 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-16 13:53:20,361 INFO L132 LiptonReduction]: Checked pairs total: 5372 [2020-10-16 13:53:20,361 INFO L134 LiptonReduction]: Total number of compositions: 134 [2020-10-16 13:53:20,361 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 45 transitions, 210 flow [2020-10-16 13:53:21,866 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 18584 states. [2020-10-16 13:53:21,866 INFO L276 IsEmpty]: Start isEmpty. Operand 18584 states. [2020-10-16 13:53:21,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-16 13:53:21,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:53:21,866 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-16 13:53:21,866 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:53:21,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:53:21,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1291919, now seen corresponding path program 1 times [2020-10-16 13:53:21,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:53:21,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420530825] [2020-10-16 13:53:21,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:53:21,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:53:21,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:53:21,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420530825] [2020-10-16 13:53:21,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:53:21,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 13:53:21,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1491280194] [2020-10-16 13:53:21,877 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:53:21,877 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:53:21,878 INFO L258 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-10-16 13:53:21,878 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:53:21,878 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:53:21,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:53:21,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:53:21,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:53:21,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:53:21,878 INFO L87 Difference]: Start difference. First operand 18584 states. Second operand 3 states. [2020-10-16 13:53:22,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:53:22,012 INFO L93 Difference]: Finished difference Result 17885 states and 92755 transitions. [2020-10-16 13:53:22,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:53:22,012 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-16 13:53:22,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:53:22,062 INFO L225 Difference]: With dead ends: 17885 [2020-10-16 13:53:22,062 INFO L226 Difference]: Without dead ends: 16791 [2020-10-16 13:53:22,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:53:22,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16791 states. [2020-10-16 13:53:22,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16791 to 16791. [2020-10-16 13:53:22,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16791 states. [2020-10-16 13:53:22,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16791 states to 16791 states and 86558 transitions. [2020-10-16 13:53:22,806 INFO L78 Accepts]: Start accepts. Automaton has 16791 states and 86558 transitions. Word has length 3 [2020-10-16 13:53:22,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:53:22,807 INFO L481 AbstractCegarLoop]: Abstraction has 16791 states and 86558 transitions. [2020-10-16 13:53:22,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:53:22,807 INFO L276 IsEmpty]: Start isEmpty. Operand 16791 states and 86558 transitions. [2020-10-16 13:53:22,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 13:53:22,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:53:22,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:53:22,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-10-16 13:53:22,808 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:53:22,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:53:22,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1124534846, now seen corresponding path program 1 times [2020-10-16 13:53:22,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:53:22,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054402637] [2020-10-16 13:53:22,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:53:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:53:23,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:53:23,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054402637] [2020-10-16 13:53:23,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:53:23,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:53:23,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2068086672] [2020-10-16 13:53:23,111 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:53:23,112 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:53:23,112 INFO L258 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-16 13:53:23,113 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:53:23,113 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:53:23,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:53:23,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:53:23,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:53:23,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:53:23,113 INFO L87 Difference]: Start difference. First operand 16791 states and 86558 transitions. Second operand 5 states. [2020-10-16 13:53:23,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:53:23,351 INFO L93 Difference]: Finished difference Result 30985 states and 150574 transitions. [2020-10-16 13:53:23,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:53:23,352 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-16 13:53:23,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:53:23,440 INFO L225 Difference]: With dead ends: 30985 [2020-10-16 13:53:23,440 INFO L226 Difference]: Without dead ends: 30977 [2020-10-16 13:53:23,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:53:23,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30977 states. [2020-10-16 13:53:24,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30977 to 19868. [2020-10-16 13:53:24,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19868 states. [2020-10-16 13:53:24,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19868 states to 19868 states and 103363 transitions. [2020-10-16 13:53:24,427 INFO L78 Accepts]: Start accepts. Automaton has 19868 states and 103363 transitions. Word has length 9 [2020-10-16 13:53:24,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:53:24,427 INFO L481 AbstractCegarLoop]: Abstraction has 19868 states and 103363 transitions. [2020-10-16 13:53:24,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:53:24,428 INFO L276 IsEmpty]: Start isEmpty. Operand 19868 states and 103363 transitions. [2020-10-16 13:53:24,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 13:53:24,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:53:24,428 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:53:24,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-10-16 13:53:24,428 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:53:24,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:53:24,429 INFO L82 PathProgramCache]: Analyzing trace with hash -696216523, now seen corresponding path program 1 times [2020-10-16 13:53:24,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:53:24,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133440955] [2020-10-16 13:53:24,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:53:24,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:53:24,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 13:53:24,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133440955] [2020-10-16 13:53:24,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:53:24,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:53:24,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [882913188] [2020-10-16 13:53:24,452 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:53:24,453 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:53:24,454 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-10-16 13:53:24,454 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:53:24,454 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:53:24,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:53:24,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:53:24,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:53:24,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:53:24,455 INFO L87 Difference]: Start difference. First operand 19868 states and 103363 transitions. Second operand 5 states. [2020-10-16 13:53:24,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:53:24,719 INFO L93 Difference]: Finished difference Result 36296 states and 178836 transitions. [2020-10-16 13:53:24,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:53:24,719 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 13:53:24,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:53:24,824 INFO L225 Difference]: With dead ends: 36296 [2020-10-16 13:53:24,824 INFO L226 Difference]: Without dead ends: 36280 [2020-10-16 13:53:24,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:53:25,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36280 states. [2020-10-16 13:53:25,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36280 to 23806. [2020-10-16 13:53:25,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23806 states. [2020-10-16 13:53:28,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23806 states to 23806 states and 125455 transitions. [2020-10-16 13:53:28,453 INFO L78 Accepts]: Start accepts. Automaton has 23806 states and 125455 transitions. Word has length 13 [2020-10-16 13:53:28,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:53:28,454 INFO L481 AbstractCegarLoop]: Abstraction has 23806 states and 125455 transitions. [2020-10-16 13:53:28,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:53:28,454 INFO L276 IsEmpty]: Start isEmpty. Operand 23806 states and 125455 transitions. [2020-10-16 13:53:28,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 13:53:28,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:53:28,454 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:53:28,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-10-16 13:53:28,455 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:53:28,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:53:28,455 INFO L82 PathProgramCache]: Analyzing trace with hash -2123666531, now seen corresponding path program 1 times [2020-10-16 13:53:28,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:53:28,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383874198] [2020-10-16 13:53:28,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:53:28,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:53:28,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:53:28,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383874198] [2020-10-16 13:53:28,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202412259] [2020-10-16 13:53:28,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:53:28,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:53:28,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 13:53:28,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:53:28,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:53:28,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:53:28,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 13:53:28,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1110297712] [2020-10-16 13:53:28,589 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:53:28,590 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:53:28,592 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions. [2020-10-16 13:53:28,592 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:53:28,611 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:53:28,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:53:28,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:53:28,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:53:28,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:53:28,611 INFO L87 Difference]: Start difference. First operand 23806 states and 125455 transitions. Second operand 7 states. [2020-10-16 13:53:29,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:53:29,135 INFO L93 Difference]: Finished difference Result 56720 states and 262685 transitions. [2020-10-16 13:53:29,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:53:29,136 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-16 13:53:29,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:53:29,309 INFO L225 Difference]: With dead ends: 56720 [2020-10-16 13:53:29,309 INFO L226 Difference]: Without dead ends: 56704 [2020-10-16 13:53:29,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-16 13:53:30,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56704 states. [2020-10-16 13:53:30,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56704 to 23629. [2020-10-16 13:53:30,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23629 states. [2020-10-16 13:53:30,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23629 states to 23629 states and 124418 transitions. [2020-10-16 13:53:30,722 INFO L78 Accepts]: Start accepts. Automaton has 23629 states and 124418 transitions. Word has length 15 [2020-10-16 13:53:30,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:53:30,722 INFO L481 AbstractCegarLoop]: Abstraction has 23629 states and 124418 transitions. [2020-10-16 13:53:30,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:53:30,722 INFO L276 IsEmpty]: Start isEmpty. Operand 23629 states and 124418 transitions. [2020-10-16 13:53:30,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 13:53:30,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:53:30,722 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:53:30,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-10-16 13:53:30,923 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:53:30,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:53:30,924 INFO L82 PathProgramCache]: Analyzing trace with hash 950817645, now seen corresponding path program 2 times [2020-10-16 13:53:30,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:53:30,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182996780] [2020-10-16 13:53:30,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:53:30,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:53:30,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 13:53:30,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182996780] [2020-10-16 13:53:30,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:53:30,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 13:53:30,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [770903320] [2020-10-16 13:53:30,955 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:53:30,956 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:53:30,957 INFO L258 McrAutomatonBuilder]: Finished intersection with 16 states and 15 transitions. [2020-10-16 13:53:30,958 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:53:30,958 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:53:30,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:53:30,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:53:30,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:53:30,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:53:30,958 INFO L87 Difference]: Start difference. First operand 23629 states and 124418 transitions. Second operand 7 states. [2020-10-16 13:53:31,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:53:31,494 INFO L93 Difference]: Finished difference Result 58078 states and 269185 transitions. [2020-10-16 13:53:31,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:53:31,495 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-16 13:53:31,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:53:31,676 INFO L225 Difference]: With dead ends: 58078 [2020-10-16 13:53:31,677 INFO L226 Difference]: Without dead ends: 58061 [2020-10-16 13:53:31,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 13:53:32,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58061 states. [2020-10-16 13:53:33,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58061 to 23109. [2020-10-16 13:53:33,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23109 states. [2020-10-16 13:53:33,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23109 states to 23109 states and 121651 transitions. [2020-10-16 13:53:33,614 INFO L78 Accepts]: Start accepts. Automaton has 23109 states and 121651 transitions. Word has length 15 [2020-10-16 13:53:33,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:53:33,614 INFO L481 AbstractCegarLoop]: Abstraction has 23109 states and 121651 transitions. [2020-10-16 13:53:33,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:53:33,614 INFO L276 IsEmpty]: Start isEmpty. Operand 23109 states and 121651 transitions. [2020-10-16 13:53:33,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 13:53:33,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:53:33,614 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:53:33,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2020-10-16 13:53:33,615 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:53:33,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:53:33,615 INFO L82 PathProgramCache]: Analyzing trace with hash -2120658652, now seen corresponding path program 1 times [2020-10-16 13:53:33,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:53:33,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764494106] [2020-10-16 13:53:33,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:53:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:53:33,633 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 13:53:33,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764494106] [2020-10-16 13:53:33,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:53:33,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:53:33,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2136054667] [2020-10-16 13:53:33,634 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:53:33,635 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:53:33,637 INFO L258 McrAutomatonBuilder]: Finished intersection with 18 states and 17 transitions. [2020-10-16 13:53:33,637 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:53:33,637 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:53:33,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:53:33,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:53:33,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:53:33,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:53:33,638 INFO L87 Difference]: Start difference. First operand 23109 states and 121651 transitions. Second operand 5 states. [2020-10-16 13:53:33,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:53:33,942 INFO L93 Difference]: Finished difference Result 41885 states and 209629 transitions. [2020-10-16 13:53:33,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:53:33,943 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-16 13:53:33,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:53:34,063 INFO L225 Difference]: With dead ends: 41885 [2020-10-16 13:53:34,063 INFO L226 Difference]: Without dead ends: 41856 [2020-10-16 13:53:34,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:53:34,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41856 states. [2020-10-16 13:53:35,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41856 to 28237. [2020-10-16 13:53:35,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28237 states. [2020-10-16 13:53:38,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28237 states to 28237 states and 150261 transitions. [2020-10-16 13:53:38,281 INFO L78 Accepts]: Start accepts. Automaton has 28237 states and 150261 transitions. Word has length 17 [2020-10-16 13:53:38,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:53:38,282 INFO L481 AbstractCegarLoop]: Abstraction has 28237 states and 150261 transitions. [2020-10-16 13:53:38,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:53:38,282 INFO L276 IsEmpty]: Start isEmpty. Operand 28237 states and 150261 transitions. [2020-10-16 13:53:38,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 13:53:38,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:53:38,283 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:53:38,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2020-10-16 13:53:38,283 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:53:38,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:53:38,283 INFO L82 PathProgramCache]: Analyzing trace with hash 269605662, now seen corresponding path program 1 times [2020-10-16 13:53:38,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:53:38,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529782214] [2020-10-16 13:53:38,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:53:38,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:53:38,313 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 13:53:38,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529782214] [2020-10-16 13:53:38,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127036705] [2020-10-16 13:53:38,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:53:38,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:53:38,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 13:53:38,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:53:38,411 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 13:53:38,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:53:38,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 13:53:38,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [766724507] [2020-10-16 13:53:38,412 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:53:38,414 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:53:38,418 INFO L258 McrAutomatonBuilder]: Finished intersection with 36 states and 51 transitions. [2020-10-16 13:53:38,419 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:53:38,442 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:53:38,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:53:38,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:53:38,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:53:38,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:53:38,443 INFO L87 Difference]: Start difference. First operand 28237 states and 150261 transitions. Second operand 7 states. [2020-10-16 13:53:39,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:53:39,030 INFO L93 Difference]: Finished difference Result 66831 states and 314874 transitions. [2020-10-16 13:53:39,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:53:39,031 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 13:53:39,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:53:39,247 INFO L225 Difference]: With dead ends: 66831 [2020-10-16 13:53:39,247 INFO L226 Difference]: Without dead ends: 66807 [2020-10-16 13:53:39,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-16 13:53:40,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66807 states. [2020-10-16 13:53:40,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66807 to 28673. [2020-10-16 13:53:40,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28673 states. [2020-10-16 13:53:40,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28673 states to 28673 states and 152375 transitions. [2020-10-16 13:53:40,949 INFO L78 Accepts]: Start accepts. Automaton has 28673 states and 152375 transitions. Word has length 19 [2020-10-16 13:53:40,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:53:40,949 INFO L481 AbstractCegarLoop]: Abstraction has 28673 states and 152375 transitions. [2020-10-16 13:53:40,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:53:40,949 INFO L276 IsEmpty]: Start isEmpty. Operand 28673 states and 152375 transitions. [2020-10-16 13:53:40,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 13:53:40,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:53:40,950 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:53:41,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2020-10-16 13:53:41,164 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:53:41,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:53:41,164 INFO L82 PathProgramCache]: Analyzing trace with hash -2138468196, now seen corresponding path program 2 times [2020-10-16 13:53:41,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:53:41,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037821779] [2020-10-16 13:53:41,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:53:41,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:53:41,198 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 13:53:41,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037821779] [2020-10-16 13:53:41,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:53:41,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 13:53:41,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2083809357] [2020-10-16 13:53:41,199 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:53:41,201 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:53:41,204 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 19 transitions. [2020-10-16 13:53:41,204 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:53:41,204 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:53:41,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:53:41,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:53:41,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:53:41,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:53:41,205 INFO L87 Difference]: Start difference. First operand 28673 states and 152375 transitions. Second operand 7 states. [2020-10-16 13:53:41,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:53:41,791 INFO L93 Difference]: Finished difference Result 68538 states and 323189 transitions. [2020-10-16 13:53:41,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:53:41,792 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 13:53:41,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:53:42,016 INFO L225 Difference]: With dead ends: 68538 [2020-10-16 13:53:42,016 INFO L226 Difference]: Without dead ends: 68505 [2020-10-16 13:53:42,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 13:53:43,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68505 states. [2020-10-16 13:53:44,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68505 to 28061. [2020-10-16 13:53:44,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28061 states. [2020-10-16 13:53:44,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28061 states to 28061 states and 149307 transitions. [2020-10-16 13:53:44,160 INFO L78 Accepts]: Start accepts. Automaton has 28061 states and 149307 transitions. Word has length 19 [2020-10-16 13:53:44,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:53:44,161 INFO L481 AbstractCegarLoop]: Abstraction has 28061 states and 149307 transitions. [2020-10-16 13:53:44,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:53:44,161 INFO L276 IsEmpty]: Start isEmpty. Operand 28061 states and 149307 transitions. [2020-10-16 13:53:44,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 13:53:44,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:53:44,162 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:53:44,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2020-10-16 13:53:44,162 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:53:44,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:53:44,162 INFO L82 PathProgramCache]: Analyzing trace with hash -2138444729, now seen corresponding path program 1 times [2020-10-16 13:53:44,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:53:44,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375012564] [2020-10-16 13:53:44,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:53:44,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:53:44,195 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 13:53:44,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375012564] [2020-10-16 13:53:44,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:53:44,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 13:53:44,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [621665841] [2020-10-16 13:53:44,196 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:53:44,198 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:53:44,200 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 19 transitions. [2020-10-16 13:53:44,200 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:53:44,200 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:53:44,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:53:44,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:53:44,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:53:44,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:53:44,201 INFO L87 Difference]: Start difference. First operand 28061 states and 149307 transitions. Second operand 7 states. [2020-10-16 13:53:44,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:53:44,801 INFO L93 Difference]: Finished difference Result 69070 states and 326154 transitions. [2020-10-16 13:53:44,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:53:44,802 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 13:53:44,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:53:45,026 INFO L225 Difference]: With dead ends: 69070 [2020-10-16 13:53:45,026 INFO L226 Difference]: Without dead ends: 69037 [2020-10-16 13:53:45,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 13:53:45,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69037 states. [2020-10-16 13:53:47,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69037 to 28938. [2020-10-16 13:53:47,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28938 states. [2020-10-16 13:53:47,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28938 states to 28938 states and 153909 transitions. [2020-10-16 13:53:47,268 INFO L78 Accepts]: Start accepts. Automaton has 28938 states and 153909 transitions. Word has length 19 [2020-10-16 13:53:47,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:53:47,268 INFO L481 AbstractCegarLoop]: Abstraction has 28938 states and 153909 transitions. [2020-10-16 13:53:47,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:53:47,269 INFO L276 IsEmpty]: Start isEmpty. Operand 28938 states and 153909 transitions. [2020-10-16 13:53:47,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 13:53:47,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:53:47,269 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:53:47,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2020-10-16 13:53:47,270 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:53:47,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:53:47,270 INFO L82 PathProgramCache]: Analyzing trace with hash -2117255609, now seen corresponding path program 2 times [2020-10-16 13:53:47,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:53:47,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609331896] [2020-10-16 13:53:47,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:53:47,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:53:47,307 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 13:53:47,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609331896] [2020-10-16 13:53:47,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:53:47,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 13:53:47,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [282377845] [2020-10-16 13:53:47,309 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:53:47,311 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:53:47,314 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 35 transitions. [2020-10-16 13:53:47,314 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:53:47,336 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:53:47,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:53:47,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:53:47,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:53:47,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:53:47,337 INFO L87 Difference]: Start difference. First operand 28938 states and 153909 transitions. Second operand 7 states. [2020-10-16 13:53:47,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:53:47,897 INFO L93 Difference]: Finished difference Result 70096 states and 331298 transitions. [2020-10-16 13:53:47,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:53:47,897 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 13:53:47,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:53:48,105 INFO L225 Difference]: With dead ends: 70096 [2020-10-16 13:53:48,105 INFO L226 Difference]: Without dead ends: 70063 [2020-10-16 13:53:48,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 13:53:48,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70063 states. [2020-10-16 13:53:49,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70063 to 29094. [2020-10-16 13:53:49,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29094 states. [2020-10-16 13:53:50,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29094 states to 29094 states and 154883 transitions. [2020-10-16 13:53:50,576 INFO L78 Accepts]: Start accepts. Automaton has 29094 states and 154883 transitions. Word has length 19 [2020-10-16 13:53:50,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:53:50,577 INFO L481 AbstractCegarLoop]: Abstraction has 29094 states and 154883 transitions. [2020-10-16 13:53:50,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:53:50,577 INFO L276 IsEmpty]: Start isEmpty. Operand 29094 states and 154883 transitions. [2020-10-16 13:53:50,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 13:53:50,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:53:50,578 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:53:50,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2020-10-16 13:53:50,578 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:53:50,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:53:50,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1393024961, now seen corresponding path program 1 times [2020-10-16 13:53:50,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:53:50,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27270946] [2020-10-16 13:53:50,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:53:50,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:53:50,629 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 13:53:50,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27270946] [2020-10-16 13:53:50,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640552281] [2020-10-16 13:53:50,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:53:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:53:50,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 13:53:50,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:53:50,740 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 13:53:50,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:53:50,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 13:53:50,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1133012083] [2020-10-16 13:53:50,741 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:53:50,743 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:53:50,749 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 53 transitions. [2020-10-16 13:53:50,749 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:53:50,773 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:53:50,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:53:50,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:53:50,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:53:50,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 13:53:50,774 INFO L87 Difference]: Start difference. First operand 29094 states and 154883 transitions. Second operand 9 states. [2020-10-16 13:53:51,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:53:51,899 INFO L93 Difference]: Finished difference Result 100731 states and 448596 transitions. [2020-10-16 13:53:51,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:53:51,900 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 13:53:51,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:53:52,211 INFO L225 Difference]: With dead ends: 100731 [2020-10-16 13:53:52,211 INFO L226 Difference]: Without dead ends: 100715 [2020-10-16 13:53:52,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 13:53:53,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100715 states. [2020-10-16 13:53:55,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100715 to 28723. [2020-10-16 13:53:55,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28723 states. [2020-10-16 13:53:55,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28723 states to 28723 states and 152772 transitions. [2020-10-16 13:53:55,223 INFO L78 Accepts]: Start accepts. Automaton has 28723 states and 152772 transitions. Word has length 21 [2020-10-16 13:53:55,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:53:55,224 INFO L481 AbstractCegarLoop]: Abstraction has 28723 states and 152772 transitions. [2020-10-16 13:53:55,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:53:55,224 INFO L276 IsEmpty]: Start isEmpty. Operand 28723 states and 152772 transitions. [2020-10-16 13:53:55,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 13:53:55,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:53:55,225 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:53:55,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:53:55,426 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:53:55,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:53:55,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1414214081, now seen corresponding path program 2 times [2020-10-16 13:53:55,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:53:55,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746792278] [2020-10-16 13:53:55,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:53:55,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:53:55,477 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 13:53:55,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746792278] [2020-10-16 13:53:55,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100646120] [2020-10-16 13:53:55,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:53:55,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 13:53:55,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 13:53:55,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 13:53:55,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:53:55,593 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 13:53:55,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:53:55,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 13:53:55,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [850940177] [2020-10-16 13:53:55,594 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:53:55,596 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:53:55,604 INFO L258 McrAutomatonBuilder]: Finished intersection with 46 states and 69 transitions. [2020-10-16 13:53:55,604 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:53:55,648 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:53:55,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:53:55,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:53:55,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:53:55,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 13:53:55,649 INFO L87 Difference]: Start difference. First operand 28723 states and 152772 transitions. Second operand 9 states. [2020-10-16 13:53:56,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:53:56,780 INFO L93 Difference]: Finished difference Result 99884 states and 444368 transitions. [2020-10-16 13:53:56,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:53:56,780 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 13:53:56,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:53:57,107 INFO L225 Difference]: With dead ends: 99884 [2020-10-16 13:53:57,107 INFO L226 Difference]: Without dead ends: 99863 [2020-10-16 13:53:57,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 13:53:58,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99863 states. [2020-10-16 13:53:59,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99863 to 28343. [2020-10-16 13:53:59,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28343 states. [2020-10-16 13:53:59,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28343 states to 28343 states and 150639 transitions. [2020-10-16 13:53:59,812 INFO L78 Accepts]: Start accepts. Automaton has 28343 states and 150639 transitions. Word has length 21 [2020-10-16 13:53:59,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:53:59,812 INFO L481 AbstractCegarLoop]: Abstraction has 28343 states and 150639 transitions. [2020-10-16 13:53:59,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:53:59,812 INFO L276 IsEmpty]: Start isEmpty. Operand 28343 states and 150639 transitions. [2020-10-16 13:53:59,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 13:53:59,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:53:59,813 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:54:00,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2020-10-16 13:54:00,014 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:54:00,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:54:00,015 INFO L82 PathProgramCache]: Analyzing trace with hash -2073547329, now seen corresponding path program 3 times [2020-10-16 13:54:00,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:54:00,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982730871] [2020-10-16 13:54:00,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:54:00,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:54:00,062 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 13:54:00,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982730871] [2020-10-16 13:54:00,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:54:00,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 13:54:00,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1312463223] [2020-10-16 13:54:00,064 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:54:00,065 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:54:00,068 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-10-16 13:54:00,068 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:54:00,068 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:54:00,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:54:00,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:54:00,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:54:00,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:54:00,069 INFO L87 Difference]: Start difference. First operand 28343 states and 150639 transitions. Second operand 9 states. [2020-10-16 13:54:01,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:54:01,186 INFO L93 Difference]: Finished difference Result 100063 states and 445271 transitions. [2020-10-16 13:54:01,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:54:01,186 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 13:54:01,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:54:01,476 INFO L225 Difference]: With dead ends: 100063 [2020-10-16 13:54:01,476 INFO L226 Difference]: Without dead ends: 100047 [2020-10-16 13:54:01,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 13:54:03,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100047 states. [2020-10-16 13:54:04,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100047 to 27662. [2020-10-16 13:54:04,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27662 states. [2020-10-16 13:54:04,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27662 states to 27662 states and 147100 transitions. [2020-10-16 13:54:04,108 INFO L78 Accepts]: Start accepts. Automaton has 27662 states and 147100 transitions. Word has length 21 [2020-10-16 13:54:04,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:54:04,108 INFO L481 AbstractCegarLoop]: Abstraction has 27662 states and 147100 transitions. [2020-10-16 13:54:04,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:54:04,108 INFO L276 IsEmpty]: Start isEmpty. Operand 27662 states and 147100 transitions. [2020-10-16 13:54:04,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 13:54:04,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:54:04,109 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:54:04,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2020-10-16 13:54:04,110 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:54:04,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:54:04,110 INFO L82 PathProgramCache]: Analyzing trace with hash -2051019009, now seen corresponding path program 4 times [2020-10-16 13:54:04,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:54:04,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15507596] [2020-10-16 13:54:04,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:54:04,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:54:04,160 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 13:54:04,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15507596] [2020-10-16 13:54:04,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:54:04,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 13:54:04,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [16220611] [2020-10-16 13:54:04,161 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:54:04,163 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:54:04,165 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-10-16 13:54:04,165 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:54:04,166 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:54:04,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:54:04,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:54:04,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:54:04,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:54:04,166 INFO L87 Difference]: Start difference. First operand 27662 states and 147100 transitions. Second operand 9 states. [2020-10-16 13:54:05,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:54:05,289 INFO L93 Difference]: Finished difference Result 99531 states and 442783 transitions. [2020-10-16 13:54:05,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:54:05,290 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 13:54:05,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:54:05,643 INFO L225 Difference]: With dead ends: 99531 [2020-10-16 13:54:05,643 INFO L226 Difference]: Without dead ends: 99510 [2020-10-16 13:54:05,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 13:54:07,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99510 states. [2020-10-16 13:54:08,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99510 to 27286. [2020-10-16 13:54:08,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27286 states. [2020-10-16 13:54:08,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27286 states to 27286 states and 144979 transitions. [2020-10-16 13:54:08,237 INFO L78 Accepts]: Start accepts. Automaton has 27286 states and 144979 transitions. Word has length 21 [2020-10-16 13:54:08,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:54:08,237 INFO L481 AbstractCegarLoop]: Abstraction has 27286 states and 144979 transitions. [2020-10-16 13:54:08,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:54:08,238 INFO L276 IsEmpty]: Start isEmpty. Operand 27286 states and 144979 transitions. [2020-10-16 13:54:08,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 13:54:08,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:54:08,238 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:54:08,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2020-10-16 13:54:08,239 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:54:08,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:54:08,239 INFO L82 PathProgramCache]: Analyzing trace with hash 102150333, now seen corresponding path program 1 times [2020-10-16 13:54:08,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:54:08,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587921370] [2020-10-16 13:54:08,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:54:08,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:54:08,258 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 13:54:08,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587921370] [2020-10-16 13:54:08,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:54:08,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:54:08,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [674860883] [2020-10-16 13:54:08,259 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:54:08,261 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:54:08,263 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-10-16 13:54:08,263 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:54:08,263 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:54:08,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:54:08,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:54:08,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:54:08,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:54:08,264 INFO L87 Difference]: Start difference. First operand 27286 states and 144979 transitions. Second operand 5 states. [2020-10-16 13:54:08,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:54:08,624 INFO L93 Difference]: Finished difference Result 49004 states and 248721 transitions. [2020-10-16 13:54:08,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:54:08,625 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-16 13:54:08,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:54:08,771 INFO L225 Difference]: With dead ends: 49004 [2020-10-16 13:54:08,771 INFO L226 Difference]: Without dead ends: 48958 [2020-10-16 13:54:08,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:54:09,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48958 states. [2020-10-16 13:54:10,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48958 to 33985. [2020-10-16 13:54:10,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33985 states. [2020-10-16 13:54:10,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33985 states to 33985 states and 181777 transitions. [2020-10-16 13:54:10,577 INFO L78 Accepts]: Start accepts. Automaton has 33985 states and 181777 transitions. Word has length 21 [2020-10-16 13:54:10,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:54:10,577 INFO L481 AbstractCegarLoop]: Abstraction has 33985 states and 181777 transitions. [2020-10-16 13:54:10,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:54:10,577 INFO L276 IsEmpty]: Start isEmpty. Operand 33985 states and 181777 transitions. [2020-10-16 13:54:10,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 13:54:10,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:54:10,578 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:54:10,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2020-10-16 13:54:10,579 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:54:10,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:54:10,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1130516927, now seen corresponding path program 5 times [2020-10-16 13:54:10,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:54:10,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505371757] [2020-10-16 13:54:10,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:54:10,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:54:10,634 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 13:54:10,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505371757] [2020-10-16 13:54:10,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:54:10,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 13:54:10,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [12953084] [2020-10-16 13:54:10,635 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:54:10,637 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:54:10,644 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 53 transitions. [2020-10-16 13:54:10,644 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:54:10,701 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:54:10,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:54:10,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:54:10,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:54:10,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:54:10,702 INFO L87 Difference]: Start difference. First operand 33985 states and 181777 transitions. Second operand 9 states. [2020-10-16 13:54:11,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:54:11,883 INFO L93 Difference]: Finished difference Result 115592 states and 523747 transitions. [2020-10-16 13:54:11,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:54:11,883 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 13:54:11,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:54:12,239 INFO L225 Difference]: With dead ends: 115592 [2020-10-16 13:54:12,240 INFO L226 Difference]: Without dead ends: 115567 [2020-10-16 13:54:12,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 12 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 13:54:14,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115567 states. [2020-10-16 13:54:15,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115567 to 33074. [2020-10-16 13:54:15,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33074 states. [2020-10-16 13:54:15,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33074 states to 33074 states and 176935 transitions. [2020-10-16 13:54:15,405 INFO L78 Accepts]: Start accepts. Automaton has 33074 states and 176935 transitions. Word has length 21 [2020-10-16 13:54:15,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:54:15,406 INFO L481 AbstractCegarLoop]: Abstraction has 33074 states and 176935 transitions. [2020-10-16 13:54:15,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:54:15,406 INFO L276 IsEmpty]: Start isEmpty. Operand 33074 states and 176935 transitions. [2020-10-16 13:54:15,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 13:54:15,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:54:15,407 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:54:15,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2020-10-16 13:54:15,407 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:54:15,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:54:15,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1131856127, now seen corresponding path program 6 times [2020-10-16 13:54:15,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:54:15,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114183223] [2020-10-16 13:54:15,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:54:15,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:54:15,460 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 13:54:15,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114183223] [2020-10-16 13:54:15,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:54:15,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 13:54:15,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [683810947] [2020-10-16 13:54:15,462 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:54:15,464 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:54:15,469 INFO L258 McrAutomatonBuilder]: Finished intersection with 30 states and 37 transitions. [2020-10-16 13:54:15,469 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:54:15,496 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:54:15,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:54:15,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:54:15,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:54:15,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:54:15,497 INFO L87 Difference]: Start difference. First operand 33074 states and 176935 transitions. Second operand 9 states. [2020-10-16 13:54:16,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:54:16,958 INFO L93 Difference]: Finished difference Result 114402 states and 517732 transitions. [2020-10-16 13:54:16,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:54:16,958 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 13:54:16,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:54:17,325 INFO L225 Difference]: With dead ends: 114402 [2020-10-16 13:54:17,325 INFO L226 Difference]: Without dead ends: 114371 [2020-10-16 13:54:17,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 13:54:18,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114371 states. [2020-10-16 13:54:22,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114371 to 31960. [2020-10-16 13:54:22,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31960 states. [2020-10-16 13:54:22,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31960 states to 31960 states and 171209 transitions. [2020-10-16 13:54:22,674 INFO L78 Accepts]: Start accepts. Automaton has 31960 states and 171209 transitions. Word has length 21 [2020-10-16 13:54:22,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:54:22,674 INFO L481 AbstractCegarLoop]: Abstraction has 31960 states and 171209 transitions. [2020-10-16 13:54:22,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:54:22,675 INFO L276 IsEmpty]: Start isEmpty. Operand 31960 states and 171209 transitions. [2020-10-16 13:54:22,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 13:54:22,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:54:22,676 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:54:22,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2020-10-16 13:54:22,676 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:54:22,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:54:22,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1106577557, now seen corresponding path program 1 times [2020-10-16 13:54:22,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:54:22,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14903313] [2020-10-16 13:54:22,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:54:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:54:22,711 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 13:54:22,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14903313] [2020-10-16 13:54:22,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469297327] [2020-10-16 13:54:22,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:54:22,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:54:22,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 13:54:22,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:54:22,813 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 13:54:22,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:54:22,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 13:54:22,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2008095419] [2020-10-16 13:54:22,814 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:54:22,815 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:54:22,820 INFO L258 McrAutomatonBuilder]: Finished intersection with 48 states and 71 transitions. [2020-10-16 13:54:22,821 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:54:22,861 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:54:22,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:54:22,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:54:22,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:54:22,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:54:22,862 INFO L87 Difference]: Start difference. First operand 31960 states and 171209 transitions. Second operand 7 states. [2020-10-16 13:54:23,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:54:23,493 INFO L93 Difference]: Finished difference Result 75380 states and 361389 transitions. [2020-10-16 13:54:23,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:54:23,494 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-16 13:54:23,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:54:23,725 INFO L225 Difference]: With dead ends: 75380 [2020-10-16 13:54:23,725 INFO L226 Difference]: Without dead ends: 75344 [2020-10-16 13:54:23,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-16 13:54:24,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75344 states. [2020-10-16 13:54:26,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75344 to 32974. [2020-10-16 13:54:26,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32974 states. [2020-10-16 13:54:26,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32974 states to 32974 states and 176363 transitions. [2020-10-16 13:54:26,230 INFO L78 Accepts]: Start accepts. Automaton has 32974 states and 176363 transitions. Word has length 23 [2020-10-16 13:54:26,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:54:26,231 INFO L481 AbstractCegarLoop]: Abstraction has 32974 states and 176363 transitions. [2020-10-16 13:54:26,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:54:26,231 INFO L276 IsEmpty]: Start isEmpty. Operand 32974 states and 176363 transitions. [2020-10-16 13:54:26,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 13:54:26,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:54:26,232 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:54:26,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:54:26,433 INFO L429 AbstractCegarLoop]: === Iteration 19 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:54:26,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:54:26,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1026706248, now seen corresponding path program 1 times [2020-10-16 13:54:26,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:54:26,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389327167] [2020-10-16 13:54:26,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:54:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:54:26,469 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 13:54:26,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389327167] [2020-10-16 13:54:26,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184084763] [2020-10-16 13:54:26,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:54:26,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:54:26,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 13:54:26,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:54:26,624 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 13:54:26,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:54:26,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 13:54:26,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1694832572] [2020-10-16 13:54:26,625 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:54:26,628 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:54:26,636 INFO L258 McrAutomatonBuilder]: Finished intersection with 32 states and 39 transitions. [2020-10-16 13:54:26,636 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:54:26,655 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [2297603#(<= thr2Thread3of6ForFork0_~t~0 0), 2297560#(<= ~x~0 0)] [2020-10-16 13:54:26,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:54:26,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:54:26,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:54:26,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:54:26,656 INFO L87 Difference]: Start difference. First operand 32974 states and 176363 transitions. Second operand 9 states. [2020-10-16 13:54:27,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:54:27,646 INFO L93 Difference]: Finished difference Result 79463 states and 381713 transitions. [2020-10-16 13:54:27,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:54:27,646 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-16 13:54:27,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:54:27,915 INFO L225 Difference]: With dead ends: 79463 [2020-10-16 13:54:27,915 INFO L226 Difference]: Without dead ends: 79421 [2020-10-16 13:54:27,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-16 13:54:28,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79421 states. [2020-10-16 13:54:32,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79421 to 33977. [2020-10-16 13:54:32,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33977 states. [2020-10-16 13:54:32,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33977 states to 33977 states and 181698 transitions. [2020-10-16 13:54:32,485 INFO L78 Accepts]: Start accepts. Automaton has 33977 states and 181698 transitions. Word has length 23 [2020-10-16 13:54:32,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:54:32,485 INFO L481 AbstractCegarLoop]: Abstraction has 33977 states and 181698 transitions. [2020-10-16 13:54:32,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:54:32,486 INFO L276 IsEmpty]: Start isEmpty. Operand 33977 states and 181698 transitions. [2020-10-16 13:54:32,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 13:54:32,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:54:32,487 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:54:32,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,37 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:54:32,688 INFO L429 AbstractCegarLoop]: === Iteration 20 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:54:32,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:54:32,689 INFO L82 PathProgramCache]: Analyzing trace with hash -617779723, now seen corresponding path program 2 times [2020-10-16 13:54:32,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:54:32,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335507373] [2020-10-16 13:54:32,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:54:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:54:32,723 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 13:54:32,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335507373] [2020-10-16 13:54:32,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:54:32,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 13:54:32,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1498761777] [2020-10-16 13:54:32,724 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:54:32,725 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:54:32,729 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 23 transitions. [2020-10-16 13:54:32,730 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:54:32,730 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:54:32,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:54:32,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:54:32,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:54:32,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:54:32,731 INFO L87 Difference]: Start difference. First operand 33977 states and 181698 transitions. Second operand 7 states. [2020-10-16 13:54:33,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:54:33,388 INFO L93 Difference]: Finished difference Result 80867 states and 388763 transitions. [2020-10-16 13:54:33,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:54:33,388 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-16 13:54:33,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:54:33,640 INFO L225 Difference]: With dead ends: 80867 [2020-10-16 13:54:33,640 INFO L226 Difference]: Without dead ends: 80812 [2020-10-16 13:54:33,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 13:54:34,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80812 states. [2020-10-16 13:54:36,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80812 to 34223. [2020-10-16 13:54:36,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34223 states. [2020-10-16 13:54:36,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34223 states to 34223 states and 183033 transitions. [2020-10-16 13:54:36,274 INFO L78 Accepts]: Start accepts. Automaton has 34223 states and 183033 transitions. Word has length 23 [2020-10-16 13:54:36,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:54:36,274 INFO L481 AbstractCegarLoop]: Abstraction has 34223 states and 183033 transitions. [2020-10-16 13:54:36,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:54:36,275 INFO L276 IsEmpty]: Start isEmpty. Operand 34223 states and 183033 transitions. [2020-10-16 13:54:36,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 13:54:36,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:54:36,276 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:54:36,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2020-10-16 13:54:36,277 INFO L429 AbstractCegarLoop]: === Iteration 21 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:54:36,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:54:36,277 INFO L82 PathProgramCache]: Analyzing trace with hash -617778328, now seen corresponding path program 2 times [2020-10-16 13:54:36,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:54:36,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083038492] [2020-10-16 13:54:36,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:54:36,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:54:36,316 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 13:54:36,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083038492] [2020-10-16 13:54:36,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:54:36,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 13:54:36,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1952161952] [2020-10-16 13:54:36,317 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:54:36,318 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:54:36,321 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 23 transitions. [2020-10-16 13:54:36,321 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:54:36,321 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:54:36,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:54:36,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:54:36,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:54:36,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:54:36,322 INFO L87 Difference]: Start difference. First operand 34223 states and 183033 transitions. Second operand 7 states. [2020-10-16 13:54:36,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:54:36,962 INFO L93 Difference]: Finished difference Result 80887 states and 388540 transitions. [2020-10-16 13:54:36,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:54:36,962 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-16 13:54:36,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:54:37,215 INFO L225 Difference]: With dead ends: 80887 [2020-10-16 13:54:37,215 INFO L226 Difference]: Without dead ends: 80832 [2020-10-16 13:54:37,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 13:54:38,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80832 states. [2020-10-16 13:54:41,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80832 to 34508. [2020-10-16 13:54:41,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34508 states. [2020-10-16 13:54:41,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34508 states to 34508 states and 184670 transitions. [2020-10-16 13:54:41,985 INFO L78 Accepts]: Start accepts. Automaton has 34508 states and 184670 transitions. Word has length 23 [2020-10-16 13:54:41,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:54:41,985 INFO L481 AbstractCegarLoop]: Abstraction has 34508 states and 184670 transitions. [2020-10-16 13:54:41,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:54:41,986 INFO L276 IsEmpty]: Start isEmpty. Operand 34508 states and 184670 transitions. [2020-10-16 13:54:41,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 13:54:41,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:54:41,988 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:54:41,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2020-10-16 13:54:41,988 INFO L429 AbstractCegarLoop]: === Iteration 22 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:54:41,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:54:41,988 INFO L82 PathProgramCache]: Analyzing trace with hash -617756256, now seen corresponding path program 1 times [2020-10-16 13:54:41,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:54:41,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721887868] [2020-10-16 13:54:41,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:54:41,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:54:42,020 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 13:54:42,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721887868] [2020-10-16 13:54:42,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:54:42,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 13:54:42,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1153559384] [2020-10-16 13:54:42,022 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:54:42,024 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:54:42,028 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 23 transitions. [2020-10-16 13:54:42,028 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:54:42,028 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:54:42,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:54:42,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:54:42,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:54:42,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:54:42,029 INFO L87 Difference]: Start difference. First operand 34508 states and 184670 transitions. Second operand 7 states. [2020-10-16 13:54:42,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:54:42,729 INFO L93 Difference]: Finished difference Result 83313 states and 401031 transitions. [2020-10-16 13:54:42,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:54:42,730 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-16 13:54:42,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:54:43,022 INFO L225 Difference]: With dead ends: 83313 [2020-10-16 13:54:43,022 INFO L226 Difference]: Without dead ends: 83258 [2020-10-16 13:54:43,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 13:54:43,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83258 states. [2020-10-16 13:54:45,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83258 to 36258. [2020-10-16 13:54:45,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36258 states. [2020-10-16 13:54:45,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36258 states to 36258 states and 193887 transitions. [2020-10-16 13:54:45,718 INFO L78 Accepts]: Start accepts. Automaton has 36258 states and 193887 transitions. Word has length 23 [2020-10-16 13:54:45,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:54:45,719 INFO L481 AbstractCegarLoop]: Abstraction has 36258 states and 193887 transitions. [2020-10-16 13:54:45,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:54:45,719 INFO L276 IsEmpty]: Start isEmpty. Operand 36258 states and 193887 transitions. [2020-10-16 13:54:45,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 13:54:45,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:54:45,721 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:54:45,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2020-10-16 13:54:45,721 INFO L429 AbstractCegarLoop]: === Iteration 23 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:54:45,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:54:45,721 INFO L82 PathProgramCache]: Analyzing trace with hash -581716896, now seen corresponding path program 2 times [2020-10-16 13:54:45,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:54:45,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351768033] [2020-10-16 13:54:45,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:54:45,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:54:45,757 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 13:54:45,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351768033] [2020-10-16 13:54:45,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:54:45,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 13:54:45,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [583078611] [2020-10-16 13:54:45,758 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:54:45,760 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:54:45,764 INFO L258 McrAutomatonBuilder]: Finished intersection with 40 states and 55 transitions. [2020-10-16 13:54:45,764 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:54:45,806 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:54:45,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:54:45,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:54:45,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:54:45,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:54:45,808 INFO L87 Difference]: Start difference. First operand 36258 states and 193887 transitions. Second operand 7 states. [2020-10-16 13:54:46,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:54:46,516 INFO L93 Difference]: Finished difference Result 84364 states and 406246 transitions. [2020-10-16 13:54:46,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:54:46,517 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-16 13:54:46,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:54:46,786 INFO L225 Difference]: With dead ends: 84364 [2020-10-16 13:54:46,786 INFO L226 Difference]: Without dead ends: 84309 [2020-10-16 13:54:46,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 8 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 13:54:47,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84309 states. [2020-10-16 13:54:51,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84309 to 37062. [2020-10-16 13:54:51,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37062 states. [2020-10-16 13:54:51,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37062 states to 37062 states and 198528 transitions. [2020-10-16 13:54:51,687 INFO L78 Accepts]: Start accepts. Automaton has 37062 states and 198528 transitions. Word has length 23 [2020-10-16 13:54:51,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:54:51,687 INFO L481 AbstractCegarLoop]: Abstraction has 37062 states and 198528 transitions. [2020-10-16 13:54:51,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:54:51,688 INFO L276 IsEmpty]: Start isEmpty. Operand 37062 states and 198528 transitions. [2020-10-16 13:54:51,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 13:54:51,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:54:51,691 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:54:51,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2020-10-16 13:54:51,691 INFO L429 AbstractCegarLoop]: === Iteration 24 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:54:51,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:54:51,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1745706838, now seen corresponding path program 1 times [2020-10-16 13:54:51,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:54:51,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870642519] [2020-10-16 13:54:51,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:54:51,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:54:51,739 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 13:54:51,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870642519] [2020-10-16 13:54:51,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604753300] [2020-10-16 13:54:51,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:54:51,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:54:51,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 13:54:51,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:54:51,849 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 13:54:51,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:54:51,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 13:54:51,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1144198647] [2020-10-16 13:54:51,850 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:54:51,851 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:54:51,859 INFO L258 McrAutomatonBuilder]: Finished intersection with 58 states and 89 transitions. [2020-10-16 13:54:51,860 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:54:51,908 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:54:51,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:54:51,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:54:51,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:54:51,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 13:54:51,909 INFO L87 Difference]: Start difference. First operand 37062 states and 198528 transitions. Second operand 9 states. [2020-10-16 13:54:53,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:54:53,174 INFO L93 Difference]: Finished difference Result 122892 states and 561130 transitions. [2020-10-16 13:54:53,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:54:53,175 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 13:54:53,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:54:53,547 INFO L225 Difference]: With dead ends: 122892 [2020-10-16 13:54:53,547 INFO L226 Difference]: Without dead ends: 122862 [2020-10-16 13:54:53,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 13:54:54,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122862 states. [2020-10-16 13:54:56,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122862 to 36735. [2020-10-16 13:54:56,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36735 states. [2020-10-16 13:54:56,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36735 states to 36735 states and 196486 transitions. [2020-10-16 13:54:56,949 INFO L78 Accepts]: Start accepts. Automaton has 36735 states and 196486 transitions. Word has length 25 [2020-10-16 13:54:56,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:54:56,949 INFO L481 AbstractCegarLoop]: Abstraction has 36735 states and 196486 transitions. [2020-10-16 13:54:56,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:54:56,949 INFO L276 IsEmpty]: Start isEmpty. Operand 36735 states and 196486 transitions. [2020-10-16 13:54:56,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 13:54:56,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:54:56,952 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:54:57,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2020-10-16 13:54:57,153 INFO L429 AbstractCegarLoop]: === Iteration 25 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:54:57,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:54:57,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1730856598, now seen corresponding path program 2 times [2020-10-16 13:54:57,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:54:57,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765499193] [2020-10-16 13:54:57,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:54:57,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:54:57,207 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 13:54:57,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765499193] [2020-10-16 13:54:57,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176404155] [2020-10-16 13:54:57,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:54:57,295 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 13:54:57,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 13:54:57,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 13:54:57,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:54:57,314 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 13:54:57,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:54:57,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 13:54:57,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [482561266] [2020-10-16 13:54:57,315 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:54:57,317 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:54:57,324 INFO L258 McrAutomatonBuilder]: Finished intersection with 50 states and 73 transitions. [2020-10-16 13:54:57,325 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:54:57,357 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:54:57,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:54:57,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:54:57,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:54:57,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 13:54:57,358 INFO L87 Difference]: Start difference. First operand 36735 states and 196486 transitions. Second operand 9 states. [2020-10-16 13:54:59,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:54:59,495 INFO L93 Difference]: Finished difference Result 121506 states and 554103 transitions. [2020-10-16 13:54:59,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:54:59,495 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 13:54:59,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:54:59,866 INFO L225 Difference]: With dead ends: 121506 [2020-10-16 13:54:59,867 INFO L226 Difference]: Without dead ends: 121473 [2020-10-16 13:54:59,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 13:55:01,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121473 states. [2020-10-16 13:55:02,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121473 to 36666. [2020-10-16 13:55:02,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36666 states. [2020-10-16 13:55:06,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36666 states to 36666 states and 195964 transitions. [2020-10-16 13:55:06,602 INFO L78 Accepts]: Start accepts. Automaton has 36666 states and 195964 transitions. Word has length 25 [2020-10-16 13:55:06,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:55:06,602 INFO L481 AbstractCegarLoop]: Abstraction has 36666 states and 195964 transitions. [2020-10-16 13:55:06,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:55:06,602 INFO L276 IsEmpty]: Start isEmpty. Operand 36666 states and 195964 transitions. [2020-10-16 13:55:06,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 13:55:06,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:55:06,606 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:55:06,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:55:06,807 INFO L429 AbstractCegarLoop]: === Iteration 26 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:55:06,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:55:06,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1730878670, now seen corresponding path program 1 times [2020-10-16 13:55:06,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:55:06,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109552589] [2020-10-16 13:55:06,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:55:06,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:55:06,857 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 13:55:06,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109552589] [2020-10-16 13:55:06,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437339699] [2020-10-16 13:55:06,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:55:06,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:55:06,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 13:55:06,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:55:06,965 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 13:55:06,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:55:06,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 13:55:06,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2069065555] [2020-10-16 13:55:06,966 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:55:06,967 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:55:06,975 INFO L258 McrAutomatonBuilder]: Finished intersection with 50 states and 73 transitions. [2020-10-16 13:55:06,975 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:55:07,001 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:55:07,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:55:07,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:55:07,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:55:07,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 13:55:07,002 INFO L87 Difference]: Start difference. First operand 36666 states and 195964 transitions. Second operand 9 states. [2020-10-16 13:55:08,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:55:08,211 INFO L93 Difference]: Finished difference Result 120500 states and 549397 transitions. [2020-10-16 13:55:08,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:55:08,211 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 13:55:08,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:55:08,571 INFO L225 Difference]: With dead ends: 120500 [2020-10-16 13:55:08,571 INFO L226 Difference]: Without dead ends: 120470 [2020-10-16 13:55:08,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 13:55:09,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120470 states. [2020-10-16 13:55:11,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120470 to 36343. [2020-10-16 13:55:11,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36343 states. [2020-10-16 13:55:11,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36343 states to 36343 states and 194056 transitions. [2020-10-16 13:55:11,703 INFO L78 Accepts]: Start accepts. Automaton has 36343 states and 194056 transitions. Word has length 25 [2020-10-16 13:55:11,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:55:11,703 INFO L481 AbstractCegarLoop]: Abstraction has 36343 states and 194056 transitions. [2020-10-16 13:55:11,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:55:11,703 INFO L276 IsEmpty]: Start isEmpty. Operand 36343 states and 194056 transitions. [2020-10-16 13:55:11,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 13:55:11,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:55:11,706 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:55:11,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-10-16 13:55:11,907 INFO L429 AbstractCegarLoop]: === Iteration 27 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:55:11,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:55:11,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1766918030, now seen corresponding path program 2 times [2020-10-16 13:55:11,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:55:11,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566587257] [2020-10-16 13:55:11,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:55:11,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:55:11,955 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 13:55:11,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566587257] [2020-10-16 13:55:11,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583656634] [2020-10-16 13:55:11,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:55:12,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 13:55:12,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 13:55:12,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 13:55:12,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:55:12,060 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 13:55:12,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:55:12,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 13:55:12,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2131522560] [2020-10-16 13:55:12,061 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:55:12,063 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:55:12,071 INFO L258 McrAutomatonBuilder]: Finished intersection with 66 states and 105 transitions. [2020-10-16 13:55:12,072 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:55:12,122 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:55:12,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:55:12,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:55:12,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:55:12,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 13:55:12,123 INFO L87 Difference]: Start difference. First operand 36343 states and 194056 transitions. Second operand 9 states. [2020-10-16 13:55:13,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:55:13,358 INFO L93 Difference]: Finished difference Result 119731 states and 545560 transitions. [2020-10-16 13:55:13,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:55:13,358 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 13:55:13,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:55:13,726 INFO L225 Difference]: With dead ends: 119731 [2020-10-16 13:55:13,726 INFO L226 Difference]: Without dead ends: 119698 [2020-10-16 13:55:13,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 13:55:15,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119698 states. [2020-10-16 13:55:16,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119698 to 36040. [2020-10-16 13:55:16,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36040 states. [2020-10-16 13:55:16,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36040 states to 36040 states and 192287 transitions. [2020-10-16 13:55:16,981 INFO L78 Accepts]: Start accepts. Automaton has 36040 states and 192287 transitions. Word has length 25 [2020-10-16 13:55:16,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:55:16,981 INFO L481 AbstractCegarLoop]: Abstraction has 36040 states and 192287 transitions. [2020-10-16 13:55:16,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:55:16,981 INFO L276 IsEmpty]: Start isEmpty. Operand 36040 states and 192287 transitions. [2020-10-16 13:55:16,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 13:55:16,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:55:16,984 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:55:17,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:55:17,185 INFO L429 AbstractCegarLoop]: === Iteration 28 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:55:17,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:55:17,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1849107924, now seen corresponding path program 3 times [2020-10-16 13:55:17,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:55:17,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844869288] [2020-10-16 13:55:17,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:55:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:55:17,236 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 13:55:17,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844869288] [2020-10-16 13:55:17,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278856049] [2020-10-16 13:55:17,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:55:17,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 13:55:17,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 13:55:17,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 13:55:17,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:55:17,341 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 13:55:17,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:55:17,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 13:55:17,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [432011050] [2020-10-16 13:55:17,342 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:55:17,344 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:55:17,353 INFO L258 McrAutomatonBuilder]: Finished intersection with 42 states and 57 transitions. [2020-10-16 13:55:17,353 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:55:17,378 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [3835451#(<= thr2Thread3of6ForFork0_~t~0 0), 3835408#(<= ~x~0 0)] [2020-10-16 13:55:17,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 13:55:17,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:55:17,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 13:55:17,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 13:55:17,379 INFO L87 Difference]: Start difference. First operand 36040 states and 192287 transitions. Second operand 11 states. [2020-10-16 13:55:19,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:55:19,007 INFO L93 Difference]: Finished difference Result 119762 states and 545615 transitions. [2020-10-16 13:55:19,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:55:19,008 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 13:55:19,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:55:19,366 INFO L225 Difference]: With dead ends: 119762 [2020-10-16 13:55:19,367 INFO L226 Difference]: Without dead ends: 119732 [2020-10-16 13:55:19,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 13:55:20,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119732 states. [2020-10-16 13:55:25,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119732 to 35475. [2020-10-16 13:55:25,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35475 states. [2020-10-16 13:55:25,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35475 states to 35475 states and 189246 transitions. [2020-10-16 13:55:25,158 INFO L78 Accepts]: Start accepts. Automaton has 35475 states and 189246 transitions. Word has length 25 [2020-10-16 13:55:25,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:55:25,158 INFO L481 AbstractCegarLoop]: Abstraction has 35475 states and 189246 transitions. [2020-10-16 13:55:25,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 13:55:25,159 INFO L276 IsEmpty]: Start isEmpty. Operand 35475 states and 189246 transitions. [2020-10-16 13:55:25,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 13:55:25,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:55:25,161 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:55:25,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-10-16 13:55:25,362 INFO L429 AbstractCegarLoop]: === Iteration 29 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:55:25,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:55:25,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1177775680, now seen corresponding path program 4 times [2020-10-16 13:55:25,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:55:25,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586802105] [2020-10-16 13:55:25,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:55:25,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:55:25,413 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 13:55:25,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586802105] [2020-10-16 13:55:25,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334899704] [2020-10-16 13:55:25,414 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:55:25,504 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 13:55:25,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 13:55:25,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 13:55:25,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:55:25,525 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 13:55:25,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:55:25,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 13:55:25,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1150869612] [2020-10-16 13:55:25,526 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:55:25,533 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:55:25,540 INFO L258 McrAutomatonBuilder]: Finished intersection with 34 states and 41 transitions. [2020-10-16 13:55:25,540 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:55:25,556 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [4026249#(<= ~x~0 0), 4026292#(<= thr2Thread3of6ForFork0_~t~0 0)] [2020-10-16 13:55:25,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 13:55:25,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:55:25,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 13:55:25,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 13:55:25,557 INFO L87 Difference]: Start difference. First operand 35475 states and 189246 transitions. Second operand 11 states. [2020-10-16 13:55:26,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:55:26,877 INFO L93 Difference]: Finished difference Result 120788 states and 550630 transitions. [2020-10-16 13:55:26,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:55:26,878 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 13:55:26,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:55:27,237 INFO L225 Difference]: With dead ends: 120788 [2020-10-16 13:55:27,238 INFO L226 Difference]: Without dead ends: 120755 [2020-10-16 13:55:27,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 13:55:28,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120755 states. [2020-10-16 13:55:30,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120755 to 35406. [2020-10-16 13:55:30,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35406 states. [2020-10-16 13:55:30,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35406 states to 35406 states and 188724 transitions. [2020-10-16 13:55:30,630 INFO L78 Accepts]: Start accepts. Automaton has 35406 states and 188724 transitions. Word has length 25 [2020-10-16 13:55:30,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:55:30,630 INFO L481 AbstractCegarLoop]: Abstraction has 35406 states and 188724 transitions. [2020-10-16 13:55:30,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 13:55:30,630 INFO L276 IsEmpty]: Start isEmpty. Operand 35406 states and 188724 transitions. [2020-10-16 13:55:30,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 13:55:30,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:55:30,633 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:55:30,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-10-16 13:55:30,840 INFO L429 AbstractCegarLoop]: === Iteration 30 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:55:30,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:55:30,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1177752213, now seen corresponding path program 1 times [2020-10-16 13:55:30,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:55:30,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45521265] [2020-10-16 13:55:30,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:55:30,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:55:30,890 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 13:55:30,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45521265] [2020-10-16 13:55:30,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229452882] [2020-10-16 13:55:30,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:55:30,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:55:30,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 13:55:30,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:55:30,996 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 13:55:30,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:55:30,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 13:55:30,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1261345368] [2020-10-16 13:55:30,997 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:55:30,999 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:55:31,003 INFO L258 McrAutomatonBuilder]: Finished intersection with 34 states and 41 transitions. [2020-10-16 13:55:31,004 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:55:31,014 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [4218021#(<= thr2Thread3of6ForFork0_~t~0 0), 4217978#(<= ~x~0 0)] [2020-10-16 13:55:31,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 13:55:31,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:55:31,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 13:55:31,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 13:55:31,015 INFO L87 Difference]: Start difference. First operand 35406 states and 188724 transitions. Second operand 11 states. [2020-10-16 13:55:32,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:55:32,359 INFO L93 Difference]: Finished difference Result 120291 states and 549128 transitions. [2020-10-16 13:55:32,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:55:32,359 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 13:55:32,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:55:33,602 INFO L225 Difference]: With dead ends: 120291 [2020-10-16 13:55:33,602 INFO L226 Difference]: Without dead ends: 120261 [2020-10-16 13:55:33,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 13:55:34,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120261 states. [2020-10-16 13:55:35,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120261 to 35196. [2020-10-16 13:55:35,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35196 states. [2020-10-16 13:55:36,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35196 states to 35196 states and 187476 transitions. [2020-10-16 13:55:36,111 INFO L78 Accepts]: Start accepts. Automaton has 35196 states and 187476 transitions. Word has length 25 [2020-10-16 13:55:36,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:55:36,111 INFO L481 AbstractCegarLoop]: Abstraction has 35196 states and 187476 transitions. [2020-10-16 13:55:36,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 13:55:36,111 INFO L276 IsEmpty]: Start isEmpty. Operand 35196 states and 187476 transitions. [2020-10-16 13:55:36,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 13:55:36,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:55:36,114 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:55:36,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:55:36,327 INFO L429 AbstractCegarLoop]: === Iteration 31 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:55:36,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:55:36,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1141712853, now seen corresponding path program 2 times [2020-10-16 13:55:36,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:55:36,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432180659] [2020-10-16 13:55:36,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:55:36,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:55:36,380 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 13:55:36,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432180659] [2020-10-16 13:55:36,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560882855] [2020-10-16 13:55:36,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:55:36,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 13:55:36,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 13:55:36,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 13:55:36,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:55:36,488 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 13:55:36,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:55:36,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 13:55:36,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1363553246] [2020-10-16 13:55:36,489 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:55:36,491 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:55:36,497 INFO L258 McrAutomatonBuilder]: Finished intersection with 42 states and 57 transitions. [2020-10-16 13:55:36,497 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:55:36,514 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [4408833#(<= thr2Thread3of6ForFork0_~t~0 0), 4408790#(<= ~x~0 0)] [2020-10-16 13:55:36,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 13:55:36,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:55:36,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 13:55:36,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 13:55:36,515 INFO L87 Difference]: Start difference. First operand 35196 states and 187476 transitions. Second operand 11 states. [2020-10-16 13:55:38,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:55:38,012 INFO L93 Difference]: Finished difference Result 119264 states and 544110 transitions. [2020-10-16 13:55:38,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:55:38,013 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 13:55:38,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:55:38,366 INFO L225 Difference]: With dead ends: 119264 [2020-10-16 13:55:38,366 INFO L226 Difference]: Without dead ends: 119224 [2020-10-16 13:55:38,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 13:55:39,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119224 states. Received shutdown request... [2020-10-16 13:55:43,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2020-10-16 13:55:43,496 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-16 13:55:43,499 WARN L235 ceAbstractionStarter]: Timeout [2020-10-16 13:55:43,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:55:43 BasicIcfg [2020-10-16 13:55:43,500 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 13:55:43,501 INFO L168 Benchmark]: Toolchain (without parser) took 221786.42 ms. Allocated memory was 137.9 MB in the beginning and 3.2 GB in the end (delta: 3.1 GB). Free memory was 99.3 MB in the beginning and 2.6 GB in the end (delta: -2.5 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2020-10-16 13:55:43,501 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-10-16 13:55:43,502 INFO L168 Benchmark]: CACSL2BoogieTranslator took 616.47 ms. Allocated memory was 137.9 MB in the beginning and 200.3 MB in the end (delta: 62.4 MB). Free memory was 99.1 MB in the beginning and 159.5 MB in the end (delta: -60.4 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2020-10-16 13:55:43,502 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.49 ms. Allocated memory is still 200.3 MB. Free memory was 159.5 MB in the beginning and 157.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-10-16 13:55:43,502 INFO L168 Benchmark]: Boogie Preprocessor took 28.90 ms. Allocated memory is still 200.3 MB. Free memory was 157.2 MB in the beginning and 155.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-16 13:55:43,503 INFO L168 Benchmark]: RCFGBuilder took 391.87 ms. Allocated memory is still 200.3 MB. Free memory was 155.8 MB in the beginning and 136.0 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2020-10-16 13:55:43,503 INFO L168 Benchmark]: TraceAbstraction took 220694.26 ms. Allocated memory was 200.3 MB in the beginning and 3.2 GB in the end (delta: 3.0 GB). Free memory was 136.0 MB in the beginning and 2.6 GB in the end (delta: -2.5 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2020-10-16 13:55:43,505 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 616.47 ms. Allocated memory was 137.9 MB in the beginning and 200.3 MB in the end (delta: 62.4 MB). Free memory was 99.1 MB in the beginning and 159.5 MB in the end (delta: -60.4 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.49 ms. Allocated memory is still 200.3 MB. Free memory was 159.5 MB in the beginning and 157.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.90 ms. Allocated memory is still 200.3 MB. Free memory was 157.2 MB in the beginning and 155.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 391.87 ms. Allocated memory is still 200.3 MB. Free memory was 155.8 MB in the beginning and 136.0 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 220694.26 ms. Allocated memory was 200.3 MB in the beginning and 3.2 GB in the end (delta: 3.0 GB). Free memory was 136.0 MB in the beginning and 2.6 GB in the end (delta: -2.5 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 386 VarBasedMoverChecksPositive, 4 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 3 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.2s, 55 PlacesBefore, 18 PlacesAfterwards, 51 TransitionsBefore, 12 TransitionsAfterwards, 692 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 47 TotalNumberOfCompositions, 670 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 608 VarBasedMoverChecksPositive, 8 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 29 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.1s, 76 PlacesBefore, 31 PlacesAfterwards, 69 TransitionsBefore, 21 TransitionsAfterwards, 1108 CoEnabledTransitionPairs, 5 FixpointIterations, 25 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 5 ConcurrentYvCompositions, 3 ChoiceCompositions, 62 TotalNumberOfCompositions, 1240 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 821 VarBasedMoverChecksPositive, 14 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 36 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 97 PlacesBefore, 41 PlacesAfterwards, 87 TransitionsBefore, 27 TransitionsAfterwards, 1608 CoEnabledTransitionPairs, 5 FixpointIterations, 32 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 77 TotalNumberOfCompositions, 2157 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1138 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 71 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 118 PlacesBefore, 51 PlacesAfterwards, 105 TransitionsBefore, 33 TransitionsAfterwards, 2192 CoEnabledTransitionPairs, 5 FixpointIterations, 43 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 10 TrivialYvCompositions, 5 ConcurrentYvCompositions, 5 ChoiceCompositions, 97 TotalNumberOfCompositions, 2978 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1474 VarBasedMoverChecksPositive, 25 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 62 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.7s, 139 PlacesBefore, 61 PlacesAfterwards, 123 TransitionsBefore, 39 TransitionsAfterwards, 2860 CoEnabledTransitionPairs, 5 FixpointIterations, 59 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 11 TrivialYvCompositions, 5 ConcurrentYvCompositions, 6 ChoiceCompositions, 121 TotalNumberOfCompositions, 4168 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1824 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 97 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.0s, 160 PlacesBefore, 71 PlacesAfterwards, 141 TransitionsBefore, 45 TransitionsAfterwards, 3612 CoEnabledTransitionPairs, 5 FixpointIterations, 66 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 12 TrivialYvCompositions, 4 ConcurrentYvCompositions, 7 ChoiceCompositions, 134 TotalNumberOfCompositions, 5372 MoverChecksTotal - TimeoutResultAtElement [Line: 679]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 679). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 49 locations, 1 error locations. Started 6 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 220.3s, OverallIterations: 106, TraceHistogramMax: 6, AutomataDifference: 68.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 11.3s, HoareTripleCheckerStatistics: 6242 SDtfs, 18551 SDslu, 19022 SDs, 0 SdLazy, 21119 SolverSat, 1741 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3586 GetRequests, 1675 SyntacticMatches, 33 SemanticMatches, 1878 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11373 ImplicationChecksByTransitivity, 15.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37062occurred in iteration=23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 118.1s AutomataMinimizationTime, 101 MinimizatonAttempts, 2284105 StatesRemovedByMinimization, 93 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 3011 NumberOfCodeBlocks, 2979 NumberOfCodeBlocksAsserted, 173 NumberOfCheckSat, 2778 ConstructedInterpolants, 0 QuantifiedInterpolants, 173052 SizeOfPredicates, 236 NumberOfNonLiveVariables, 5167 ConjunctsInSsa, 324 ConjunctsInUnsatCore, 145 InterpolantComputations, 57 PerfectInterpolantSequences, 1024/1646 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 could not prove your program: Timeout Completed graceful shutdown