/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/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 03:06:52,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 03:06:52,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 03:06:52,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 03:06:52,395 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 03:06:52,397 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 03:06:52,399 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 03:06:52,408 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 03:06:52,412 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 03:06:52,414 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 03:06:52,416 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 03:06:52,418 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 03:06:52,418 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 03:06:52,419 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 03:06:52,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 03:06:52,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 03:06:52,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 03:06:52,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 03:06:52,426 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 03:06:52,430 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 03:06:52,435 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 03:06:52,438 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 03:06:52,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 03:06:52,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 03:06:52,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 03:06:52,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 03:06:52,442 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 03:06:52,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 03:06:52,445 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 03:06:52,446 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 03:06:52,446 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 03:06:52,447 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 03:06:52,448 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 03:06:52,448 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 03:06:52,449 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 03:06:52,449 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 03:06:52,450 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 03:06:52,450 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 03:06:52,450 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 03:06:52,451 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 03:06:52,452 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 03:06:52,453 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf [2020-04-18 03:06:52,486 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 03:06:52,489 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 03:06:52,490 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 03:06:52,490 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 03:06:52,491 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 03:06:52,491 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 03:06:52,491 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 03:06:52,491 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 03:06:52,491 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 03:06:52,492 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 03:06:52,492 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 03:06:52,492 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 03:06:52,494 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 03:06:52,494 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 03:06:52,495 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 03:06:52,495 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 03:06:52,495 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 03:06:52,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 03:06:52,495 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 03:06:52,495 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 03:06:52,496 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 03:06:52,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 03:06:52,496 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 03:06:52,496 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 03:06:52,496 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 03:06:52,497 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 03:06:52,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 03:06:52,497 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 03:06:52,498 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 03:06:52,498 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 03:06:52,765 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 03:06:52,784 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 03:06:52,788 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 03:06:52,789 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 03:06:52,789 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 03:06:52,790 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-1.i [2020-04-18 03:06:52,858 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcb8c1b26/4824cc77d6fe4522aadf2e7fad02c8d7/FLAG27c31ab43 [2020-04-18 03:06:53,394 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 03:06:53,395 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-1.i [2020-04-18 03:06:53,410 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcb8c1b26/4824cc77d6fe4522aadf2e7fad02c8d7/FLAG27c31ab43 [2020-04-18 03:06:53,736 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcb8c1b26/4824cc77d6fe4522aadf2e7fad02c8d7 [2020-04-18 03:06:53,744 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 03:06:53,767 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 03:06:53,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 03:06:53,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 03:06:53,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 03:06:53,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:06:53" (1/1) ... [2020-04-18 03:06:53,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b7f68c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:06:53, skipping insertion in model container [2020-04-18 03:06:53,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:06:53" (1/1) ... [2020-04-18 03:06:53,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 03:06:53,835 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 03:06:54,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 03:06:54,285 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 03:06:54,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 03:06:54,451 INFO L208 MainTranslator]: Completed translation [2020-04-18 03:06:54,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:06:54 WrapperNode [2020-04-18 03:06:54,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 03:06:54,453 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 03:06:54,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 03:06:54,453 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 03:06:54,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:06:54" (1/1) ... [2020-04-18 03:06:54,499 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:06:54" (1/1) ... [2020-04-18 03:06:54,525 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 03:06:54,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 03:06:54,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 03:06:54,526 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 03:06:54,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:06:54" (1/1) ... [2020-04-18 03:06:54,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:06:54" (1/1) ... [2020-04-18 03:06:54,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:06:54" (1/1) ... [2020-04-18 03:06:54,535 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:06:54" (1/1) ... [2020-04-18 03:06:54,541 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:06:54" (1/1) ... [2020-04-18 03:06:54,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:06:54" (1/1) ... [2020-04-18 03:06:54,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:06:54" (1/1) ... [2020-04-18 03:06:54,549 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 03:06:54,550 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 03:06:54,550 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 03:06:54,550 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 03:06:54,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:06:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:06:54,610 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-04-18 03:06:54,610 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-04-18 03:06:54,610 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-04-18 03:06:54,611 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-04-18 03:06:54,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 03:06:54,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 03:06:54,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 03:06:54,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 03:06:54,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 03:06:54,613 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 03:06:54,959 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 03:06:54,959 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-04-18 03:06:54,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:06:54 BoogieIcfgContainer [2020-04-18 03:06:54,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 03:06:54,965 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 03:06:54,966 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 03:06:54,969 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 03:06:54,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:06:53" (1/3) ... [2020-04-18 03:06:54,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6acaa0e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:06:54, skipping insertion in model container [2020-04-18 03:06:54,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:06:54" (2/3) ... [2020-04-18 03:06:54,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6acaa0e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:06:54, skipping insertion in model container [2020-04-18 03:06:54,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:06:54" (3/3) ... [2020-04-18 03:06:54,972 INFO L109 eAbstractionObserver]: Analyzing ICFG nondet-loop-bound-1.i [2020-04-18 03:06:54,982 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 03:06:54,983 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 03:06:54,989 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 03:06:54,990 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 03:06:55,011 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:55,011 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:55,011 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:55,012 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:55,012 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:55,012 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:55,012 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:55,013 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:55,013 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:55,013 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:55,013 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:55,014 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:55,014 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:55,014 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:55,014 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:55,014 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:55,015 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:55,018 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:55,019 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:55,019 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:55,019 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:55,020 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:55,026 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:55,026 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:55,027 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:55,027 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:55,028 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:55,028 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:55,041 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 03:06:55,056 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 03:06:55,056 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 03:06:55,056 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 03:06:55,056 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 03:06:55,057 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 03:06:55,057 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 03:06:55,057 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 03:06:55,057 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 03:06:55,070 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 58 transitions, 126 flow [2020-04-18 03:06:55,071 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 58 transitions, 126 flow [2020-04-18 03:06:55,109 INFO L129 PetriNetUnfolder]: 4/68 cut-off events. [2020-04-18 03:06:55,110 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 03:06:55,116 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 68 events. 4/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 48. Up to 4 conditions per place. [2020-04-18 03:06:55,118 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 58 transitions, 126 flow [2020-04-18 03:06:55,139 INFO L129 PetriNetUnfolder]: 4/68 cut-off events. [2020-04-18 03:06:55,139 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 03:06:55,140 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 68 events. 4/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 48. Up to 4 conditions per place. [2020-04-18 03:06:55,142 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 592 [2020-04-18 03:06:55,143 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 03:06:56,538 WARN L192 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-04-18 03:06:56,883 WARN L192 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2020-04-18 03:06:57,089 WARN L192 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-04-18 03:06:57,325 WARN L192 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2020-04-18 03:06:57,422 INFO L206 etLargeBlockEncoding]: Checked pairs total: 486 [2020-04-18 03:06:57,422 INFO L214 etLargeBlockEncoding]: Total number of compositions: 51 [2020-04-18 03:06:57,426 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 12 transitions, 34 flow [2020-04-18 03:06:57,434 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-04-18 03:06:57,436 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-04-18 03:06:57,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-04-18 03:06:57,442 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:06:57,443 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-04-18 03:06:57,444 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:06:57,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:06:57,448 INFO L82 PathProgramCache]: Analyzing trace with hash 229686, now seen corresponding path program 1 times [2020-04-18 03:06:57,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:06:57,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607096711] [2020-04-18 03:06:57,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:06:57,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:06:57,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:06:57,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607096711] [2020-04-18 03:06:57,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:06:57,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 03:06:57,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197913545] [2020-04-18 03:06:57,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 03:06:57,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:06:57,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 03:06:57,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 03:06:57,638 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-04-18 03:06:57,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:06:57,696 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2020-04-18 03:06:57,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 03:06:57,698 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-04-18 03:06:57,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:06:57,724 INFO L225 Difference]: With dead ends: 35 [2020-04-18 03:06:57,724 INFO L226 Difference]: Without dead ends: 31 [2020-04-18 03:06:57,726 INFO L678 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 [2020-04-18 03:06:57,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-04-18 03:06:57,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-04-18 03:06:57,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-04-18 03:06:57,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2020-04-18 03:06:57,771 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 51 transitions. Word has length 3 [2020-04-18 03:06:57,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:06:57,772 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 51 transitions. [2020-04-18 03:06:57,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 03:06:57,773 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2020-04-18 03:06:57,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 03:06:57,774 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:06:57,774 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:06:57,774 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:06:57,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:06:57,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1647647331, now seen corresponding path program 1 times [2020-04-18 03:06:57,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:06:57,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214744024] [2020-04-18 03:06:57,776 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:06:57,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:06:57,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:06:57,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214744024] [2020-04-18 03:06:57,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:06:57,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 03:06:57,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677621277] [2020-04-18 03:06:57,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 03:06:57,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:06:57,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 03:06:57,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 03:06:57,893 INFO L87 Difference]: Start difference. First operand 31 states and 51 transitions. Second operand 4 states. [2020-04-18 03:06:57,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:06:57,917 INFO L93 Difference]: Finished difference Result 26 states and 42 transitions. [2020-04-18 03:06:57,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 03:06:57,922 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-04-18 03:06:57,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:06:57,923 INFO L225 Difference]: With dead ends: 26 [2020-04-18 03:06:57,923 INFO L226 Difference]: Without dead ends: 24 [2020-04-18 03:06:57,924 INFO L678 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 [2020-04-18 03:06:57,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-04-18 03:06:57,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-04-18 03:06:57,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-04-18 03:06:57,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 39 transitions. [2020-04-18 03:06:57,931 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 39 transitions. Word has length 7 [2020-04-18 03:06:57,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:06:57,932 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 39 transitions. [2020-04-18 03:06:57,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 03:06:57,932 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 39 transitions. [2020-04-18 03:06:57,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 03:06:57,933 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:06:57,933 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-04-18 03:06:57,934 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:06:57,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:06:57,935 INFO L82 PathProgramCache]: Analyzing trace with hash -462538936, now seen corresponding path program 1 times [2020-04-18 03:06:57,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:06:57,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850968882] [2020-04-18 03:06:57,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:06:57,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 03:06:58,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 03:06:58,026 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 03:06:58,026 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 03:06:58,026 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-04-18 03:06:58,027 WARN L363 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-18 03:06:58,028 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-04-18 03:06:58,036 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,036 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,036 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,036 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,037 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,037 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,037 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,037 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,037 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,038 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,038 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,038 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,038 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,038 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,039 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,039 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,039 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,039 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,040 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,040 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,040 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,040 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,040 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,041 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,041 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,041 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,041 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,042 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,042 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,042 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,042 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,042 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,043 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,043 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,043 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,044 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,044 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,044 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,044 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,046 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,046 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,046 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,046 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,046 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,048 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,048 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,049 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,049 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,049 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,049 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,050 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,051 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,051 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,051 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,051 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,051 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:06:58,053 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-18 03:06:58,054 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 03:06:58,054 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 03:06:58,054 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 03:06:58,054 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 03:06:58,054 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 03:06:58,054 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 03:06:58,054 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 03:06:58,054 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 03:06:58,057 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 74 transitions, 172 flow [2020-04-18 03:06:58,057 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 80 places, 74 transitions, 172 flow [2020-04-18 03:06:58,076 INFO L129 PetriNetUnfolder]: 5/89 cut-off events. [2020-04-18 03:06:58,077 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-04-18 03:06:58,078 INFO L80 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 89 events. 5/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 120 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 98. Up to 6 conditions per place. [2020-04-18 03:06:58,080 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 80 places, 74 transitions, 172 flow [2020-04-18 03:06:58,097 INFO L129 PetriNetUnfolder]: 5/89 cut-off events. [2020-04-18 03:06:58,098 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-04-18 03:06:58,099 INFO L80 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 89 events. 5/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 120 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 98. Up to 6 conditions per place. [2020-04-18 03:06:58,101 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 920 [2020-04-18 03:06:58,101 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 03:06:59,556 WARN L192 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-04-18 03:06:59,648 INFO L206 etLargeBlockEncoding]: Checked pairs total: 942 [2020-04-18 03:06:59,649 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2020-04-18 03:06:59,649 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 66 flow [2020-04-18 03:06:59,662 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 224 states. [2020-04-18 03:06:59,662 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states. [2020-04-18 03:06:59,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-04-18 03:06:59,662 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:06:59,663 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-04-18 03:06:59,663 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:06:59,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:06:59,663 INFO L82 PathProgramCache]: Analyzing trace with hash 384194, now seen corresponding path program 1 times [2020-04-18 03:06:59,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:06:59,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375393314] [2020-04-18 03:06:59,664 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:06:59,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:06:59,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:06:59,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375393314] [2020-04-18 03:06:59,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:06:59,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 03:06:59,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049502937] [2020-04-18 03:06:59,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 03:06:59,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:06:59,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 03:06:59,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 03:06:59,709 INFO L87 Difference]: Start difference. First operand 224 states. Second operand 3 states. [2020-04-18 03:06:59,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:06:59,741 INFO L93 Difference]: Finished difference Result 185 states and 459 transitions. [2020-04-18 03:06:59,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 03:06:59,741 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-04-18 03:06:59,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:06:59,746 INFO L225 Difference]: With dead ends: 185 [2020-04-18 03:06:59,746 INFO L226 Difference]: Without dead ends: 171 [2020-04-18 03:06:59,747 INFO L678 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 [2020-04-18 03:06:59,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-04-18 03:06:59,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-04-18 03:06:59,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-04-18 03:06:59,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 418 transitions. [2020-04-18 03:06:59,772 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 418 transitions. Word has length 3 [2020-04-18 03:06:59,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:06:59,773 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 418 transitions. [2020-04-18 03:06:59,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 03:06:59,773 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 418 transitions. [2020-04-18 03:06:59,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 03:06:59,774 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:06:59,774 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:06:59,775 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:06:59,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:06:59,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1694917346, now seen corresponding path program 1 times [2020-04-18 03:06:59,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:06:59,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730731612] [2020-04-18 03:06:59,775 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:06:59,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:06:59,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:06:59,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730731612] [2020-04-18 03:06:59,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:06:59,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 03:06:59,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084431909] [2020-04-18 03:06:59,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 03:06:59,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:06:59,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 03:06:59,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 03:06:59,833 INFO L87 Difference]: Start difference. First operand 171 states and 418 transitions. Second operand 5 states. [2020-04-18 03:06:59,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:06:59,931 INFO L93 Difference]: Finished difference Result 205 states and 460 transitions. [2020-04-18 03:06:59,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 03:06:59,932 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-04-18 03:06:59,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:06:59,935 INFO L225 Difference]: With dead ends: 205 [2020-04-18 03:06:59,935 INFO L226 Difference]: Without dead ends: 201 [2020-04-18 03:06:59,935 INFO L678 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 [2020-04-18 03:06:59,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-04-18 03:06:59,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 162. [2020-04-18 03:06:59,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-04-18 03:06:59,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 399 transitions. [2020-04-18 03:06:59,953 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 399 transitions. Word has length 9 [2020-04-18 03:06:59,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:06:59,954 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 399 transitions. [2020-04-18 03:06:59,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 03:06:59,954 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 399 transitions. [2020-04-18 03:06:59,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 03:06:59,955 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:06:59,955 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:06:59,956 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:06:59,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:06:59,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1027741454, now seen corresponding path program 1 times [2020-04-18 03:06:59,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:06:59,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814766752] [2020-04-18 03:06:59,957 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:06:59,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:00,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:07:00,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814766752] [2020-04-18 03:07:00,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:00,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 03:07:00,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705120158] [2020-04-18 03:07:00,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 03:07:00,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:00,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 03:07:00,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 03:07:00,013 INFO L87 Difference]: Start difference. First operand 162 states and 399 transitions. Second operand 5 states. [2020-04-18 03:07:00,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:00,092 INFO L93 Difference]: Finished difference Result 189 states and 423 transitions. [2020-04-18 03:07:00,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 03:07:00,093 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-18 03:07:00,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:00,095 INFO L225 Difference]: With dead ends: 189 [2020-04-18 03:07:00,095 INFO L226 Difference]: Without dead ends: 185 [2020-04-18 03:07:00,096 INFO L678 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 [2020-04-18 03:07:00,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-04-18 03:07:00,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 153. [2020-04-18 03:07:00,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-04-18 03:07:00,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 367 transitions. [2020-04-18 03:07:00,108 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 367 transitions. Word has length 13 [2020-04-18 03:07:00,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:00,109 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 367 transitions. [2020-04-18 03:07:00,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 03:07:00,110 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 367 transitions. [2020-04-18 03:07:00,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 03:07:00,111 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:00,111 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:00,111 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:07:00,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:00,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1792799235, now seen corresponding path program 1 times [2020-04-18 03:07:00,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:00,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307982380] [2020-04-18 03:07:00,112 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:00,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 03:07:00,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 03:07:00,178 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 03:07:00,178 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 03:07:00,179 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-04-18 03:07:00,179 WARN L363 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-18 03:07:00,180 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-04-18 03:07:00,190 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,191 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,191 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,191 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,191 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,192 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,194 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,194 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,194 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,194 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,194 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,195 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,195 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,195 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,195 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,195 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,195 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,196 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,196 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,196 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,198 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,199 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,199 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,199 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,199 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,200 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,200 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,200 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,200 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,200 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,200 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,201 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,204 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,204 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,204 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,204 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,204 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,206 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,206 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,206 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,207 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,207 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,207 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,207 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,207 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,208 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,208 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,209 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,209 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,209 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,210 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,211 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,211 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,211 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,211 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,212 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,213 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,213 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,214 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,214 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,214 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,215 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,215 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,216 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,216 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,216 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,218 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,219 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,219 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,219 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,219 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,219 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,221 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,221 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,222 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,222 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,222 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,222 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,225 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,226 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,226 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,226 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,226 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,226 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:00,231 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-04-18 03:07:00,232 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 03:07:00,232 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 03:07:00,232 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 03:07:00,232 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 03:07:00,232 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 03:07:00,232 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 03:07:00,232 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 03:07:00,232 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 03:07:00,239 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 90 transitions, 222 flow [2020-04-18 03:07:00,239 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 90 transitions, 222 flow [2020-04-18 03:07:00,257 INFO L129 PetriNetUnfolder]: 6/110 cut-off events. [2020-04-18 03:07:00,257 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-04-18 03:07:00,258 INFO L80 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 110 events. 6/110 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 163 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 124. Up to 8 conditions per place. [2020-04-18 03:07:00,261 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 90 transitions, 222 flow [2020-04-18 03:07:00,276 INFO L129 PetriNetUnfolder]: 6/110 cut-off events. [2020-04-18 03:07:00,277 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-04-18 03:07:00,278 INFO L80 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 110 events. 6/110 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 163 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 124. Up to 8 conditions per place. [2020-04-18 03:07:00,280 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1308 [2020-04-18 03:07:00,280 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 03:07:01,598 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-04-18 03:07:01,843 WARN L192 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-04-18 03:07:01,937 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1426 [2020-04-18 03:07:01,937 INFO L214 etLargeBlockEncoding]: Total number of compositions: 74 [2020-04-18 03:07:01,937 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 27 transitions, 96 flow [2020-04-18 03:07:01,964 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 683 states. [2020-04-18 03:07:01,964 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states. [2020-04-18 03:07:01,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-04-18 03:07:01,965 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:01,965 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-04-18 03:07:01,965 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:07:01,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:01,966 INFO L82 PathProgramCache]: Analyzing trace with hash 567457, now seen corresponding path program 1 times [2020-04-18 03:07:01,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:01,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556458851] [2020-04-18 03:07:01,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:01,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:01,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:01,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556458851] [2020-04-18 03:07:01,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:01,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 03:07:01,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084266313] [2020-04-18 03:07:02,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 03:07:02,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:02,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 03:07:02,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 03:07:02,000 INFO L87 Difference]: Start difference. First operand 683 states. Second operand 3 states. [2020-04-18 03:07:02,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:02,031 INFO L93 Difference]: Finished difference Result 600 states and 1886 transitions. [2020-04-18 03:07:02,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 03:07:02,034 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-04-18 03:07:02,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:02,040 INFO L225 Difference]: With dead ends: 600 [2020-04-18 03:07:02,040 INFO L226 Difference]: Without dead ends: 559 [2020-04-18 03:07:02,041 INFO L678 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 [2020-04-18 03:07:02,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-04-18 03:07:02,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2020-04-18 03:07:02,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-04-18 03:07:02,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1737 transitions. [2020-04-18 03:07:02,082 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1737 transitions. Word has length 3 [2020-04-18 03:07:02,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:02,083 INFO L479 AbstractCegarLoop]: Abstraction has 559 states and 1737 transitions. [2020-04-18 03:07:02,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 03:07:02,083 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1737 transitions. [2020-04-18 03:07:02,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 03:07:02,084 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:02,084 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:02,084 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:07:02,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:02,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1052273544, now seen corresponding path program 1 times [2020-04-18 03:07:02,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:02,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938284255] [2020-04-18 03:07:02,085 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:02,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:02,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:02,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938284255] [2020-04-18 03:07:02,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:02,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 03:07:02,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114231902] [2020-04-18 03:07:02,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 03:07:02,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:02,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 03:07:02,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 03:07:02,152 INFO L87 Difference]: Start difference. First operand 559 states and 1737 transitions. Second operand 5 states. [2020-04-18 03:07:02,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:02,251 INFO L93 Difference]: Finished difference Result 817 states and 2317 transitions. [2020-04-18 03:07:02,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 03:07:02,252 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-04-18 03:07:02,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:02,258 INFO L225 Difference]: With dead ends: 817 [2020-04-18 03:07:02,258 INFO L226 Difference]: Without dead ends: 812 [2020-04-18 03:07:02,258 INFO L678 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 [2020-04-18 03:07:02,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-04-18 03:07:02,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 585. [2020-04-18 03:07:02,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-04-18 03:07:02,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1832 transitions. [2020-04-18 03:07:02,286 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1832 transitions. Word has length 9 [2020-04-18 03:07:02,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:02,286 INFO L479 AbstractCegarLoop]: Abstraction has 585 states and 1832 transitions. [2020-04-18 03:07:02,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 03:07:02,286 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1832 transitions. [2020-04-18 03:07:02,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 03:07:02,288 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:02,288 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:02,288 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:07:02,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:02,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1096280394, now seen corresponding path program 1 times [2020-04-18 03:07:02,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:02,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839565903] [2020-04-18 03:07:02,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:02,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:02,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:07:02,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839565903] [2020-04-18 03:07:02,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:02,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 03:07:02,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103927929] [2020-04-18 03:07:02,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 03:07:02,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:02,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 03:07:02,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 03:07:02,335 INFO L87 Difference]: Start difference. First operand 585 states and 1832 transitions. Second operand 5 states. [2020-04-18 03:07:02,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:02,426 INFO L93 Difference]: Finished difference Result 843 states and 2406 transitions. [2020-04-18 03:07:02,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 03:07:02,426 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-18 03:07:02,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:02,432 INFO L225 Difference]: With dead ends: 843 [2020-04-18 03:07:02,432 INFO L226 Difference]: Without dead ends: 836 [2020-04-18 03:07:02,432 INFO L678 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 [2020-04-18 03:07:02,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-04-18 03:07:02,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 611. [2020-04-18 03:07:02,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-04-18 03:07:02,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1906 transitions. [2020-04-18 03:07:02,459 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1906 transitions. Word has length 13 [2020-04-18 03:07:02,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:02,459 INFO L479 AbstractCegarLoop]: Abstraction has 611 states and 1906 transitions. [2020-04-18 03:07:02,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 03:07:02,459 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1906 transitions. [2020-04-18 03:07:02,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 03:07:02,460 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:02,461 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:02,461 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:07:02,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:02,461 INFO L82 PathProgramCache]: Analyzing trace with hash 2044985054, now seen corresponding path program 1 times [2020-04-18 03:07:02,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:02,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944728864] [2020-04-18 03:07:02,462 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:02,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:02,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:02,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944728864] [2020-04-18 03:07:02,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269075096] [2020-04-18 03:07:02,535 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:07:02,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:02,622 INFO L264 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2020-04-18 03:07:02,625 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:02,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:02,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:02,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-04-18 03:07:02,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143534176] [2020-04-18 03:07:02,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 03:07:02,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:02,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 03:07:02,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-04-18 03:07:02,714 INFO L87 Difference]: Start difference. First operand 611 states and 1906 transitions. Second operand 12 states. [2020-04-18 03:07:03,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:03,001 INFO L93 Difference]: Finished difference Result 1059 states and 2818 transitions. [2020-04-18 03:07:03,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:07:03,002 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-04-18 03:07:03,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:03,009 INFO L225 Difference]: With dead ends: 1059 [2020-04-18 03:07:03,009 INFO L226 Difference]: Without dead ends: 1052 [2020-04-18 03:07:03,010 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-04-18 03:07:03,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-04-18 03:07:03,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 591. [2020-04-18 03:07:03,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-04-18 03:07:03,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1840 transitions. [2020-04-18 03:07:03,038 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1840 transitions. Word has length 15 [2020-04-18 03:07:03,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:03,039 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 1840 transitions. [2020-04-18 03:07:03,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 03:07:03,039 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1840 transitions. [2020-04-18 03:07:03,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 03:07:03,041 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:03,041 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:03,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:03,245 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:07:03,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:03,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1258473782, now seen corresponding path program 2 times [2020-04-18 03:07:03,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:03,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875511358] [2020-04-18 03:07:03,247 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:03,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:03,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:07:03,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875511358] [2020-04-18 03:07:03,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:03,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 03:07:03,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472773096] [2020-04-18 03:07:03,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 03:07:03,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:03,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 03:07:03,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 03:07:03,321 INFO L87 Difference]: Start difference. First operand 591 states and 1840 transitions. Second operand 7 states. [2020-04-18 03:07:03,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:03,574 INFO L93 Difference]: Finished difference Result 1053 states and 2807 transitions. [2020-04-18 03:07:03,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:07:03,575 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-04-18 03:07:03,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:03,580 INFO L225 Difference]: With dead ends: 1053 [2020-04-18 03:07:03,581 INFO L226 Difference]: Without dead ends: 1045 [2020-04-18 03:07:03,581 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-04-18 03:07:03,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-04-18 03:07:03,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 536. [2020-04-18 03:07:03,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-04-18 03:07:03,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1688 transitions. [2020-04-18 03:07:03,606 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1688 transitions. Word has length 15 [2020-04-18 03:07:03,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:03,606 INFO L479 AbstractCegarLoop]: Abstraction has 536 states and 1688 transitions. [2020-04-18 03:07:03,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 03:07:03,607 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1688 transitions. [2020-04-18 03:07:03,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 03:07:03,607 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:03,608 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:03,608 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:07:03,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:03,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1734594488, now seen corresponding path program 1 times [2020-04-18 03:07:03,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:03,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247178651] [2020-04-18 03:07:03,609 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:03,654 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 03:07:03,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247178651] [2020-04-18 03:07:03,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:03,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 03:07:03,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455145022] [2020-04-18 03:07:03,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 03:07:03,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:03,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 03:07:03,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 03:07:03,656 INFO L87 Difference]: Start difference. First operand 536 states and 1688 transitions. Second operand 5 states. [2020-04-18 03:07:03,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:03,759 INFO L93 Difference]: Finished difference Result 736 states and 2123 transitions. [2020-04-18 03:07:03,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 03:07:03,760 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-04-18 03:07:03,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:03,765 INFO L225 Difference]: With dead ends: 736 [2020-04-18 03:07:03,766 INFO L226 Difference]: Without dead ends: 728 [2020-04-18 03:07:03,766 INFO L678 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 [2020-04-18 03:07:03,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-04-18 03:07:03,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 549. [2020-04-18 03:07:03,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-04-18 03:07:03,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 1684 transitions. [2020-04-18 03:07:03,793 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 1684 transitions. Word has length 17 [2020-04-18 03:07:03,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:03,793 INFO L479 AbstractCegarLoop]: Abstraction has 549 states and 1684 transitions. [2020-04-18 03:07:03,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 03:07:03,794 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 1684 transitions. [2020-04-18 03:07:03,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 03:07:03,795 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:03,795 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:03,795 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:07:03,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:03,795 INFO L82 PathProgramCache]: Analyzing trace with hash -2065233823, now seen corresponding path program 1 times [2020-04-18 03:07:03,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:03,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72017778] [2020-04-18 03:07:03,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 03:07:03,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 03:07:03,853 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 03:07:03,853 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 03:07:03,854 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-04-18 03:07:03,854 WARN L363 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-18 03:07:03,855 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-04-18 03:07:03,874 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,874 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,875 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,875 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,875 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,875 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,875 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,875 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,876 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,876 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,876 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,876 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,876 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,876 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,876 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,877 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,877 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,877 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,877 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,877 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,877 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,878 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,878 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,878 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,878 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,878 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,878 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,878 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,879 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,879 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,879 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,879 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,879 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,879 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,880 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,880 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,880 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,880 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,880 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,880 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,881 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,881 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,881 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,881 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,881 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,881 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,881 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,882 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,882 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,882 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,882 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,882 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,882 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,883 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,883 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,883 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,883 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,883 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,883 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,884 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,884 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,884 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,884 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,884 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,884 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,884 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,885 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,885 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,885 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,885 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,886 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,886 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,886 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,888 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,888 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,888 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,888 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,889 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,890 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,890 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,890 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,891 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,891 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,892 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,892 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,893 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,893 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,893 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,894 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,894 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,895 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,895 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,895 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,895 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,896 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,896 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,896 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,897 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,897 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,897 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,898 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,898 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,898 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,899 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,899 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,899 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,901 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,902 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,902 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,902 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,902 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,902 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:03,904 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-04-18 03:07:03,904 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 03:07:03,904 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 03:07:03,904 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 03:07:03,904 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 03:07:03,905 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 03:07:03,905 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 03:07:03,905 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 03:07:03,905 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 03:07:03,906 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 106 transitions, 276 flow [2020-04-18 03:07:03,907 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 106 transitions, 276 flow [2020-04-18 03:07:03,935 INFO L129 PetriNetUnfolder]: 7/131 cut-off events. [2020-04-18 03:07:03,936 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-04-18 03:07:03,938 INFO L80 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 131 events. 7/131 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 201 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 151. Up to 10 conditions per place. [2020-04-18 03:07:03,941 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 106 transitions, 276 flow [2020-04-18 03:07:03,962 INFO L129 PetriNetUnfolder]: 7/131 cut-off events. [2020-04-18 03:07:03,962 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-04-18 03:07:03,963 INFO L80 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 131 events. 7/131 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 201 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 151. Up to 10 conditions per place. [2020-04-18 03:07:03,966 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1756 [2020-04-18 03:07:03,966 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 03:07:05,457 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-04-18 03:07:06,044 WARN L192 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2020-04-18 03:07:06,226 WARN L192 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-04-18 03:07:06,342 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2033 [2020-04-18 03:07:06,343 INFO L214 etLargeBlockEncoding]: Total number of compositions: 86 [2020-04-18 03:07:06,343 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 33 transitions, 130 flow [2020-04-18 03:07:06,450 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2060 states. [2020-04-18 03:07:06,451 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states. [2020-04-18 03:07:06,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-04-18 03:07:06,451 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:06,451 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-04-18 03:07:06,452 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:07:06,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:06,452 INFO L82 PathProgramCache]: Analyzing trace with hash 779528, now seen corresponding path program 1 times [2020-04-18 03:07:06,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:06,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743433596] [2020-04-18 03:07:06,453 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:06,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:06,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:06,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743433596] [2020-04-18 03:07:06,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:06,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 03:07:06,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700464639] [2020-04-18 03:07:06,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 03:07:06,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:06,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 03:07:06,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 03:07:06,473 INFO L87 Difference]: Start difference. First operand 2060 states. Second operand 3 states. [2020-04-18 03:07:06,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:06,533 INFO L93 Difference]: Finished difference Result 1889 states and 7217 transitions. [2020-04-18 03:07:06,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 03:07:06,533 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-04-18 03:07:06,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:06,549 INFO L225 Difference]: With dead ends: 1889 [2020-04-18 03:07:06,550 INFO L226 Difference]: Without dead ends: 1767 [2020-04-18 03:07:06,550 INFO L678 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 [2020-04-18 03:07:06,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-04-18 03:07:06,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1767. [2020-04-18 03:07:06,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-04-18 03:07:06,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 6690 transitions. [2020-04-18 03:07:06,648 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 6690 transitions. Word has length 3 [2020-04-18 03:07:06,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:06,648 INFO L479 AbstractCegarLoop]: Abstraction has 1767 states and 6690 transitions. [2020-04-18 03:07:06,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 03:07:06,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 6690 transitions. [2020-04-18 03:07:06,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 03:07:06,649 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:06,649 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:06,650 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:07:06,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:06,651 INFO L82 PathProgramCache]: Analyzing trace with hash -666106918, now seen corresponding path program 1 times [2020-04-18 03:07:06,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:06,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462710501] [2020-04-18 03:07:06,651 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:06,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:06,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:06,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462710501] [2020-04-18 03:07:06,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:06,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 03:07:06,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138723748] [2020-04-18 03:07:06,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 03:07:06,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:06,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 03:07:06,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 03:07:06,721 INFO L87 Difference]: Start difference. First operand 1767 states and 6690 transitions. Second operand 5 states. [2020-04-18 03:07:06,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:06,853 INFO L93 Difference]: Finished difference Result 2905 states and 10138 transitions. [2020-04-18 03:07:06,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 03:07:06,853 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-04-18 03:07:06,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:06,948 INFO L225 Difference]: With dead ends: 2905 [2020-04-18 03:07:06,948 INFO L226 Difference]: Without dead ends: 2899 [2020-04-18 03:07:06,950 INFO L678 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 [2020-04-18 03:07:06,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-04-18 03:07:07,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1966. [2020-04-18 03:07:07,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2020-04-18 03:07:07,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 7503 transitions. [2020-04-18 03:07:07,053 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 7503 transitions. Word has length 9 [2020-04-18 03:07:07,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:07,053 INFO L479 AbstractCegarLoop]: Abstraction has 1966 states and 7503 transitions. [2020-04-18 03:07:07,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 03:07:07,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 7503 transitions. [2020-04-18 03:07:07,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 03:07:07,054 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:07,054 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:07,055 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:07:07,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:07,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1766896000, now seen corresponding path program 1 times [2020-04-18 03:07:07,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:07,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114134415] [2020-04-18 03:07:07,055 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:07,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:07,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:07:07,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114134415] [2020-04-18 03:07:07,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:07,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 03:07:07,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437649496] [2020-04-18 03:07:07,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 03:07:07,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:07,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 03:07:07,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 03:07:07,101 INFO L87 Difference]: Start difference. First operand 1966 states and 7503 transitions. Second operand 5 states. [2020-04-18 03:07:07,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:07,207 INFO L93 Difference]: Finished difference Result 3204 states and 11312 transitions. [2020-04-18 03:07:07,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 03:07:07,208 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-18 03:07:07,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:07,243 INFO L225 Difference]: With dead ends: 3204 [2020-04-18 03:07:07,243 INFO L226 Difference]: Without dead ends: 3194 [2020-04-18 03:07:07,243 INFO L678 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 [2020-04-18 03:07:07,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2020-04-18 03:07:07,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 2200. [2020-04-18 03:07:07,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-04-18 03:07:07,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 8453 transitions. [2020-04-18 03:07:07,355 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 8453 transitions. Word has length 13 [2020-04-18 03:07:07,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:07,357 INFO L479 AbstractCegarLoop]: Abstraction has 2200 states and 8453 transitions. [2020-04-18 03:07:07,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 03:07:07,357 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 8453 transitions. [2020-04-18 03:07:07,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 03:07:07,358 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:07,358 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:07,358 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:07:07,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:07,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1022394712, now seen corresponding path program 1 times [2020-04-18 03:07:07,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:07,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5804330] [2020-04-18 03:07:07,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:07,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:07,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:07,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5804330] [2020-04-18 03:07:07,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22495046] [2020-04-18 03:07:07,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:07:07,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:07,499 INFO L264 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2020-04-18 03:07:07,501 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:07,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:07,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:07,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-04-18 03:07:07,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168378179] [2020-04-18 03:07:07,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 03:07:07,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:07,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 03:07:07,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-04-18 03:07:07,564 INFO L87 Difference]: Start difference. First operand 2200 states and 8453 transitions. Second operand 12 states. [2020-04-18 03:07:07,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:07,880 INFO L93 Difference]: Finished difference Result 4556 states and 14911 transitions. [2020-04-18 03:07:07,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:07:07,881 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-04-18 03:07:07,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:07,912 INFO L225 Difference]: With dead ends: 4556 [2020-04-18 03:07:07,912 INFO L226 Difference]: Without dead ends: 4546 [2020-04-18 03:07:07,914 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-04-18 03:07:08,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2020-04-18 03:07:08,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 2157. [2020-04-18 03:07:08,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2157 states. [2020-04-18 03:07:08,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 8278 transitions. [2020-04-18 03:07:08,096 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 8278 transitions. Word has length 15 [2020-04-18 03:07:08,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:08,096 INFO L479 AbstractCegarLoop]: Abstraction has 2157 states and 8278 transitions. [2020-04-18 03:07:08,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 03:07:08,096 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 8278 transitions. [2020-04-18 03:07:08,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 03:07:08,097 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:08,097 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:08,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:08,301 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:07:08,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:08,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1474969304, now seen corresponding path program 2 times [2020-04-18 03:07:08,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:08,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738025509] [2020-04-18 03:07:08,303 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:08,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:08,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:07:08,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738025509] [2020-04-18 03:07:08,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:08,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 03:07:08,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099783325] [2020-04-18 03:07:08,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 03:07:08,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:08,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 03:07:08,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 03:07:08,381 INFO L87 Difference]: Start difference. First operand 2157 states and 8278 transitions. Second operand 7 states. [2020-04-18 03:07:08,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:08,632 INFO L93 Difference]: Finished difference Result 4612 states and 15111 transitions. [2020-04-18 03:07:08,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:07:08,633 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-04-18 03:07:08,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:08,649 INFO L225 Difference]: With dead ends: 4612 [2020-04-18 03:07:08,650 INFO L226 Difference]: Without dead ends: 4601 [2020-04-18 03:07:08,650 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-04-18 03:07:08,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2020-04-18 03:07:08,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 2035. [2020-04-18 03:07:08,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2035 states. [2020-04-18 03:07:08,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 7845 transitions. [2020-04-18 03:07:08,753 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 7845 transitions. Word has length 15 [2020-04-18 03:07:08,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:08,753 INFO L479 AbstractCegarLoop]: Abstraction has 2035 states and 7845 transitions. [2020-04-18 03:07:08,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 03:07:08,754 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 7845 transitions. [2020-04-18 03:07:08,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 03:07:08,754 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:08,754 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:08,755 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:07:08,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:08,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1278978660, now seen corresponding path program 1 times [2020-04-18 03:07:08,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:08,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627643663] [2020-04-18 03:07:08,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:08,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:08,797 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 03:07:08,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627643663] [2020-04-18 03:07:08,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:08,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 03:07:08,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627163967] [2020-04-18 03:07:08,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 03:07:08,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:08,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 03:07:08,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 03:07:08,799 INFO L87 Difference]: Start difference. First operand 2035 states and 7845 transitions. Second operand 5 states. [2020-04-18 03:07:08,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:08,908 INFO L93 Difference]: Finished difference Result 3265 states and 11681 transitions. [2020-04-18 03:07:08,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 03:07:08,908 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-04-18 03:07:08,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:08,921 INFO L225 Difference]: With dead ends: 3265 [2020-04-18 03:07:08,921 INFO L226 Difference]: Without dead ends: 3250 [2020-04-18 03:07:08,922 INFO L678 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 [2020-04-18 03:07:08,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2020-04-18 03:07:09,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 2281. [2020-04-18 03:07:09,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2020-04-18 03:07:09,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 8755 transitions. [2020-04-18 03:07:09,011 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 8755 transitions. Word has length 17 [2020-04-18 03:07:09,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:09,012 INFO L479 AbstractCegarLoop]: Abstraction has 2281 states and 8755 transitions. [2020-04-18 03:07:09,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 03:07:09,012 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 8755 transitions. [2020-04-18 03:07:09,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 03:07:09,013 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:09,013 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:09,013 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:07:09,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:09,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1455436228, now seen corresponding path program 1 times [2020-04-18 03:07:09,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:09,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432529058] [2020-04-18 03:07:09,015 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:09,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:09,108 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 03:07:09,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432529058] [2020-04-18 03:07:09,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105381907] [2020-04-18 03:07:09,108 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:07:09,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:09,248 INFO L264 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 7 conjunts are in the unsatisfiable core [2020-04-18 03:07:09,249 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:09,313 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 03:07:09,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:09,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-04-18 03:07:09,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050914405] [2020-04-18 03:07:09,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 03:07:09,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:09,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 03:07:09,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-04-18 03:07:09,315 INFO L87 Difference]: Start difference. First operand 2281 states and 8755 transitions. Second operand 12 states. [2020-04-18 03:07:09,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:09,659 INFO L93 Difference]: Finished difference Result 4825 states and 15986 transitions. [2020-04-18 03:07:09,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:07:09,659 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-04-18 03:07:09,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:09,675 INFO L225 Difference]: With dead ends: 4825 [2020-04-18 03:07:09,675 INFO L226 Difference]: Without dead ends: 4813 [2020-04-18 03:07:09,676 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-04-18 03:07:09,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4813 states. [2020-04-18 03:07:09,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4813 to 2305. [2020-04-18 03:07:09,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-04-18 03:07:09,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 8815 transitions. [2020-04-18 03:07:09,782 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 8815 transitions. Word has length 19 [2020-04-18 03:07:09,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:09,783 INFO L479 AbstractCegarLoop]: Abstraction has 2305 states and 8815 transitions. [2020-04-18 03:07:09,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 03:07:09,783 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 8815 transitions. [2020-04-18 03:07:09,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 03:07:09,784 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:09,784 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:09,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:09,988 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:07:09,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:09,989 INFO L82 PathProgramCache]: Analyzing trace with hash -979473248, now seen corresponding path program 1 times [2020-04-18 03:07:09,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:09,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006950572] [2020-04-18 03:07:09,989 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:10,050 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:07:10,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006950572] [2020-04-18 03:07:10,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640028070] [2020-04-18 03:07:10,052 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:07:10,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:10,125 INFO L264 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 7 conjunts are in the unsatisfiable core [2020-04-18 03:07:10,126 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:10,196 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:07:10,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:10,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-04-18 03:07:10,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397058577] [2020-04-18 03:07:10,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 03:07:10,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:10,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 03:07:10,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-04-18 03:07:10,198 INFO L87 Difference]: Start difference. First operand 2305 states and 8815 transitions. Second operand 12 states. [2020-04-18 03:07:10,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:10,586 INFO L93 Difference]: Finished difference Result 4942 states and 16410 transitions. [2020-04-18 03:07:10,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:07:10,587 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-04-18 03:07:10,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:10,606 INFO L225 Difference]: With dead ends: 4942 [2020-04-18 03:07:10,606 INFO L226 Difference]: Without dead ends: 4925 [2020-04-18 03:07:10,611 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-04-18 03:07:10,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4925 states. [2020-04-18 03:07:10,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4925 to 2299. [2020-04-18 03:07:10,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2299 states. [2020-04-18 03:07:10,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 8782 transitions. [2020-04-18 03:07:10,793 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 8782 transitions. Word has length 19 [2020-04-18 03:07:10,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:10,794 INFO L479 AbstractCegarLoop]: Abstraction has 2299 states and 8782 transitions. [2020-04-18 03:07:10,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 03:07:10,794 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 8782 transitions. [2020-04-18 03:07:10,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 03:07:10,795 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:10,796 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:10,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:10,999 INFO L427 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:07:11,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:11,000 INFO L82 PathProgramCache]: Analyzing trace with hash -737855584, now seen corresponding path program 2 times [2020-04-18 03:07:11,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:11,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353388179] [2020-04-18 03:07:11,001 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:11,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:11,066 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 03:07:11,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353388179] [2020-04-18 03:07:11,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:11,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 03:07:11,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19898320] [2020-04-18 03:07:11,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 03:07:11,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:11,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 03:07:11,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 03:07:11,068 INFO L87 Difference]: Start difference. First operand 2299 states and 8782 transitions. Second operand 7 states. [2020-04-18 03:07:11,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:11,357 INFO L93 Difference]: Finished difference Result 4934 states and 16393 transitions. [2020-04-18 03:07:11,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:07:11,358 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-04-18 03:07:11,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:11,372 INFO L225 Difference]: With dead ends: 4934 [2020-04-18 03:07:11,372 INFO L226 Difference]: Without dead ends: 4917 [2020-04-18 03:07:11,373 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-04-18 03:07:11,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4917 states. [2020-04-18 03:07:11,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4917 to 2216. [2020-04-18 03:07:11,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2216 states. [2020-04-18 03:07:11,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 8477 transitions. [2020-04-18 03:07:11,463 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 8477 transitions. Word has length 19 [2020-04-18 03:07:11,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:11,463 INFO L479 AbstractCegarLoop]: Abstraction has 2216 states and 8477 transitions. [2020-04-18 03:07:11,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 03:07:11,463 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 8477 transitions. [2020-04-18 03:07:11,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 03:07:11,464 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:11,464 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:11,465 INFO L427 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:07:11,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:11,465 INFO L82 PathProgramCache]: Analyzing trace with hash -737840828, now seen corresponding path program 2 times [2020-04-18 03:07:11,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:11,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135748018] [2020-04-18 03:07:11,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:11,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:11,521 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 03:07:11,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135748018] [2020-04-18 03:07:11,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:11,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 03:07:11,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279999027] [2020-04-18 03:07:11,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 03:07:11,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:11,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 03:07:11,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 03:07:11,524 INFO L87 Difference]: Start difference. First operand 2216 states and 8477 transitions. Second operand 7 states. [2020-04-18 03:07:11,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:11,812 INFO L93 Difference]: Finished difference Result 4774 states and 15828 transitions. [2020-04-18 03:07:11,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:07:11,812 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-04-18 03:07:11,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:11,824 INFO L225 Difference]: With dead ends: 4774 [2020-04-18 03:07:11,824 INFO L226 Difference]: Without dead ends: 4757 [2020-04-18 03:07:11,825 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-04-18 03:07:11,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2020-04-18 03:07:11,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 2150. [2020-04-18 03:07:11,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2150 states. [2020-04-18 03:07:11,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 8243 transitions. [2020-04-18 03:07:11,917 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 8243 transitions. Word has length 19 [2020-04-18 03:07:11,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:11,918 INFO L479 AbstractCegarLoop]: Abstraction has 2150 states and 8243 transitions. [2020-04-18 03:07:11,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 03:07:11,918 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 8243 transitions. [2020-04-18 03:07:11,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 03:07:11,919 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:11,920 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:11,920 INFO L427 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:07:11,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:11,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1726751032, now seen corresponding path program 1 times [2020-04-18 03:07:11,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:11,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841085784] [2020-04-18 03:07:11,921 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:11,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:12,028 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:12,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841085784] [2020-04-18 03:07:12,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644581967] [2020-04-18 03:07:12,028 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:07:12,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:12,097 INFO L264 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:07:12,103 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:12,251 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:12,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:12,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:07:12,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237921028] [2020-04-18 03:07:12,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:07:12,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:12,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:07:12,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:07:12,253 INFO L87 Difference]: Start difference. First operand 2150 states and 8243 transitions. Second operand 16 states. [2020-04-18 03:07:12,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:12,992 INFO L93 Difference]: Finished difference Result 6025 states and 18746 transitions. [2020-04-18 03:07:12,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:07:12,992 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-04-18 03:07:12,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:13,002 INFO L225 Difference]: With dead ends: 6025 [2020-04-18 03:07:13,002 INFO L226 Difference]: Without dead ends: 6017 [2020-04-18 03:07:13,003 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:07:13,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6017 states. [2020-04-18 03:07:13,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6017 to 2117. [2020-04-18 03:07:13,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2117 states. [2020-04-18 03:07:13,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 8106 transitions. [2020-04-18 03:07:13,084 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 8106 transitions. Word has length 21 [2020-04-18 03:07:13,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:13,084 INFO L479 AbstractCegarLoop]: Abstraction has 2117 states and 8106 transitions. [2020-04-18 03:07:13,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:07:13,084 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 8106 transitions. [2020-04-18 03:07:13,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 03:07:13,086 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:13,086 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:13,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:13,290 INFO L427 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:07:13,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:13,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1485133368, now seen corresponding path program 2 times [2020-04-18 03:07:13,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:13,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185156347] [2020-04-18 03:07:13,292 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:13,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:13,366 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 03:07:13,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185156347] [2020-04-18 03:07:13,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282778499] [2020-04-18 03:07:13,367 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:07:13,439 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 03:07:13,440 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:07:13,440 INFO L264 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:07:13,441 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:13,566 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 03:07:13,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:13,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:07:13,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200333169] [2020-04-18 03:07:13,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:07:13,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:13,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:07:13,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:07:13,568 INFO L87 Difference]: Start difference. First operand 2117 states and 8106 transitions. Second operand 16 states. [2020-04-18 03:07:14,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:14,385 INFO L93 Difference]: Finished difference Result 5914 states and 18384 transitions. [2020-04-18 03:07:14,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:07:14,385 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-04-18 03:07:14,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:14,394 INFO L225 Difference]: With dead ends: 5914 [2020-04-18 03:07:14,394 INFO L226 Difference]: Without dead ends: 5903 [2020-04-18 03:07:14,395 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:07:14,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5903 states. [2020-04-18 03:07:14,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5903 to 2085. [2020-04-18 03:07:14,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2085 states. [2020-04-18 03:07:14,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 7975 transitions. [2020-04-18 03:07:14,480 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 7975 transitions. Word has length 21 [2020-04-18 03:07:14,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:14,481 INFO L479 AbstractCegarLoop]: Abstraction has 2085 states and 7975 transitions. [2020-04-18 03:07:14,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:07:14,481 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 7975 transitions. [2020-04-18 03:07:14,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 03:07:14,483 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:14,483 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:14,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:14,690 INFO L427 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:07:14,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:14,691 INFO L82 PathProgramCache]: Analyzing trace with hash -268549816, now seen corresponding path program 3 times [2020-04-18 03:07:14,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:14,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796253186] [2020-04-18 03:07:14,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:14,764 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:07:14,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796253186] [2020-04-18 03:07:14,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989707561] [2020-04-18 03:07:14,765 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:07:14,837 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-18 03:07:14,837 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:07:14,838 INFO L264 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:07:14,839 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:14,948 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:07:14,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:14,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:07:14,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307085705] [2020-04-18 03:07:14,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:07:14,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:14,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:07:14,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:07:14,950 INFO L87 Difference]: Start difference. First operand 2085 states and 7975 transitions. Second operand 16 states. [2020-04-18 03:07:15,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:15,727 INFO L93 Difference]: Finished difference Result 5907 states and 18375 transitions. [2020-04-18 03:07:15,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:07:15,736 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-04-18 03:07:15,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:15,748 INFO L225 Difference]: With dead ends: 5907 [2020-04-18 03:07:15,749 INFO L226 Difference]: Without dead ends: 5899 [2020-04-18 03:07:15,749 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:07:15,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5899 states. [2020-04-18 03:07:15,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5899 to 2008. [2020-04-18 03:07:15,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2008 states. [2020-04-18 03:07:15,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 7698 transitions. [2020-04-18 03:07:15,908 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 7698 transitions. Word has length 21 [2020-04-18 03:07:15,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:15,909 INFO L479 AbstractCegarLoop]: Abstraction has 2008 states and 7698 transitions. [2020-04-18 03:07:15,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:07:15,909 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 7698 transitions. [2020-04-18 03:07:15,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 03:07:15,910 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:15,911 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:16,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:16,115 INFO L427 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:07:16,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:16,116 INFO L82 PathProgramCache]: Analyzing trace with hash -675948728, now seen corresponding path program 4 times [2020-04-18 03:07:16,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:16,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444094795] [2020-04-18 03:07:16,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:16,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:16,221 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:07:16,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444094795] [2020-04-18 03:07:16,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290141437] [2020-04-18 03:07:16,222 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:07:16,305 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 03:07:16,306 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:07:16,306 INFO L264 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:07:16,308 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:16,425 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:07:16,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:16,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:07:16,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457725882] [2020-04-18 03:07:16,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:07:16,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:16,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:07:16,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:07:16,428 INFO L87 Difference]: Start difference. First operand 2008 states and 7698 transitions. Second operand 16 states. [2020-04-18 03:07:17,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:17,206 INFO L93 Difference]: Finished difference Result 5835 states and 18155 transitions. [2020-04-18 03:07:17,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:07:17,206 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-04-18 03:07:17,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:17,216 INFO L225 Difference]: With dead ends: 5835 [2020-04-18 03:07:17,216 INFO L226 Difference]: Without dead ends: 5824 [2020-04-18 03:07:17,216 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:07:17,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5824 states. [2020-04-18 03:07:17,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5824 to 1976. [2020-04-18 03:07:17,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1976 states. [2020-04-18 03:07:17,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 7567 transitions. [2020-04-18 03:07:17,296 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 7567 transitions. Word has length 21 [2020-04-18 03:07:17,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:17,296 INFO L479 AbstractCegarLoop]: Abstraction has 1976 states and 7567 transitions. [2020-04-18 03:07:17,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:07:17,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 7567 transitions. [2020-04-18 03:07:17,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 03:07:17,301 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:17,301 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:17,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:17,505 INFO L427 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:07:17,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:17,505 INFO L82 PathProgramCache]: Analyzing trace with hash -409607608, now seen corresponding path program 5 times [2020-04-18 03:07:17,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:17,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769463806] [2020-04-18 03:07:17,506 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:17,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:17,582 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 03:07:17,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769463806] [2020-04-18 03:07:17,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:17,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 03:07:17,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952973338] [2020-04-18 03:07:17,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 03:07:17,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:17,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 03:07:17,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-04-18 03:07:17,584 INFO L87 Difference]: Start difference. First operand 1976 states and 7567 transitions. Second operand 9 states. [2020-04-18 03:07:18,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:18,312 INFO L93 Difference]: Finished difference Result 5820 states and 18126 transitions. [2020-04-18 03:07:18,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:07:18,313 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-04-18 03:07:18,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:18,325 INFO L225 Difference]: With dead ends: 5820 [2020-04-18 03:07:18,325 INFO L226 Difference]: Without dead ends: 5812 [2020-04-18 03:07:18,325 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-04-18 03:07:18,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5812 states. [2020-04-18 03:07:18,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5812 to 1907. [2020-04-18 03:07:18,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1907 states. [2020-04-18 03:07:18,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 7310 transitions. [2020-04-18 03:07:18,408 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 7310 transitions. Word has length 21 [2020-04-18 03:07:18,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:18,409 INFO L479 AbstractCegarLoop]: Abstraction has 1907 states and 7310 transitions. [2020-04-18 03:07:18,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 03:07:18,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 7310 transitions. [2020-04-18 03:07:18,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 03:07:18,413 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:18,413 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:18,413 INFO L427 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:07:18,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:18,414 INFO L82 PathProgramCache]: Analyzing trace with hash -395441848, now seen corresponding path program 6 times [2020-04-18 03:07:18,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:18,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623727783] [2020-04-18 03:07:18,415 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:18,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:18,484 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 03:07:18,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623727783] [2020-04-18 03:07:18,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:18,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 03:07:18,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356958030] [2020-04-18 03:07:18,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 03:07:18,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:18,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 03:07:18,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-04-18 03:07:18,486 INFO L87 Difference]: Start difference. First operand 1907 states and 7310 transitions. Second operand 9 states. [2020-04-18 03:07:19,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:19,126 INFO L93 Difference]: Finished difference Result 5717 states and 17784 transitions. [2020-04-18 03:07:19,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:07:19,127 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-04-18 03:07:19,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:19,135 INFO L225 Difference]: With dead ends: 5717 [2020-04-18 03:07:19,135 INFO L226 Difference]: Without dead ends: 5705 [2020-04-18 03:07:19,136 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-04-18 03:07:19,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5705 states. [2020-04-18 03:07:19,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5705 to 1800. [2020-04-18 03:07:19,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1800 states. [2020-04-18 03:07:19,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 6961 transitions. [2020-04-18 03:07:19,217 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 6961 transitions. Word has length 21 [2020-04-18 03:07:19,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:19,217 INFO L479 AbstractCegarLoop]: Abstraction has 1800 states and 6961 transitions. [2020-04-18 03:07:19,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 03:07:19,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 6961 transitions. [2020-04-18 03:07:19,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 03:07:19,219 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:19,219 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:19,219 INFO L427 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:07:19,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:19,219 INFO L82 PathProgramCache]: Analyzing trace with hash -334654421, now seen corresponding path program 1 times [2020-04-18 03:07:19,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:19,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548245823] [2020-04-18 03:07:19,220 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:19,261 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 03:07:19,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548245823] [2020-04-18 03:07:19,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:19,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 03:07:19,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242181169] [2020-04-18 03:07:19,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 03:07:19,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:19,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 03:07:19,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 03:07:19,263 INFO L87 Difference]: Start difference. First operand 1800 states and 6961 transitions. Second operand 5 states. [2020-04-18 03:07:19,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:19,341 INFO L93 Difference]: Finished difference Result 2762 states and 9976 transitions. [2020-04-18 03:07:19,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 03:07:19,341 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-04-18 03:07:19,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:19,347 INFO L225 Difference]: With dead ends: 2762 [2020-04-18 03:07:19,348 INFO L226 Difference]: Without dead ends: 2746 [2020-04-18 03:07:19,348 INFO L678 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 [2020-04-18 03:07:19,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2020-04-18 03:07:19,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 1965. [2020-04-18 03:07:19,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2020-04-18 03:07:19,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 7429 transitions. [2020-04-18 03:07:19,401 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 7429 transitions. Word has length 21 [2020-04-18 03:07:19,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:19,401 INFO L479 AbstractCegarLoop]: Abstraction has 1965 states and 7429 transitions. [2020-04-18 03:07:19,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 03:07:19,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 7429 transitions. [2020-04-18 03:07:19,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-04-18 03:07:19,403 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:19,403 INFO L425 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:19,404 INFO L427 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:07:19,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:19,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1788555247, now seen corresponding path program 1 times [2020-04-18 03:07:19,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:19,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286744326] [2020-04-18 03:07:19,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:19,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 03:07:19,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 03:07:19,451 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 03:07:19,452 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 03:07:19,452 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-04-18 03:07:19,453 WARN L363 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-18 03:07:19,453 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-04-18 03:07:19,471 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,471 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,471 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,471 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,472 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,472 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,472 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,472 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,472 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,473 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,473 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,473 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,473 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,474 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,474 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,474 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,474 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,474 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,474 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,474 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,474 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,474 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,475 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,475 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,475 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,475 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,475 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,475 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,475 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,475 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,475 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,475 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,475 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,476 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,476 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,476 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,476 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,476 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,476 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,476 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,476 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,476 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,476 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,476 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,477 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,477 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,477 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,477 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,477 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,477 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,477 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,477 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,477 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,477 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,477 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,478 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,478 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,478 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,478 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,478 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,478 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,478 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,479 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,479 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,479 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,479 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,479 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,479 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,479 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,479 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,479 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,479 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,480 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,480 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,480 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,480 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,480 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,480 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,480 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,481 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,481 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,481 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,481 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,481 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,481 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,482 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,482 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,482 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,482 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,482 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,483 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,483 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,484 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,484 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,484 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,485 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,485 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,485 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,486 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,486 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,487 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,487 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,487 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,488 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,488 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,489 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,489 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,489 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,490 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,490 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,491 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,491 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,492 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,492 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,492 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,492 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,493 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,493 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,493 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,494 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,494 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,494 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,495 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,495 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,495 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,496 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,496 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,496 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,497 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,497 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,497 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,498 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,498 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,498 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,499 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,499 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,499 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,500 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,500 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,500 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:19,501 INFO L251 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-04-18 03:07:19,501 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 03:07:19,502 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 03:07:19,502 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 03:07:19,502 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 03:07:19,502 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 03:07:19,502 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 03:07:19,502 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 03:07:19,502 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 03:07:19,504 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 122 transitions, 334 flow [2020-04-18 03:07:19,504 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 137 places, 122 transitions, 334 flow [2020-04-18 03:07:19,521 INFO L129 PetriNetUnfolder]: 8/152 cut-off events. [2020-04-18 03:07:19,521 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-04-18 03:07:19,522 INFO L80 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 152 events. 8/152 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 251 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 179. Up to 12 conditions per place. [2020-04-18 03:07:19,526 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 137 places, 122 transitions, 334 flow [2020-04-18 03:07:19,543 INFO L129 PetriNetUnfolder]: 8/152 cut-off events. [2020-04-18 03:07:19,543 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-04-18 03:07:19,544 INFO L80 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 152 events. 8/152 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 251 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 179. Up to 12 conditions per place. [2020-04-18 03:07:19,548 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2264 [2020-04-18 03:07:19,548 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 03:07:21,499 WARN L192 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2020-04-18 03:07:21,849 WARN L192 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 62 [2020-04-18 03:07:22,075 WARN L192 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-04-18 03:07:22,186 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2999 [2020-04-18 03:07:22,187 INFO L214 etLargeBlockEncoding]: Total number of compositions: 104 [2020-04-18 03:07:22,187 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 39 transitions, 168 flow [2020-04-18 03:07:22,649 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6191 states. [2020-04-18 03:07:22,650 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states. [2020-04-18 03:07:22,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-04-18 03:07:22,650 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:22,650 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-04-18 03:07:22,650 INFO L427 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]=== [2020-04-18 03:07:22,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:22,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1026170, now seen corresponding path program 1 times [2020-04-18 03:07:22,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:22,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384542659] [2020-04-18 03:07:22,651 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:22,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:22,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:22,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384542659] [2020-04-18 03:07:22,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:22,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 03:07:22,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811185273] [2020-04-18 03:07:22,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 03:07:22,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:22,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 03:07:22,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 03:07:22,666 INFO L87 Difference]: Start difference. First operand 6191 states. Second operand 3 states. [2020-04-18 03:07:22,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:22,730 INFO L93 Difference]: Finished difference Result 5844 states and 26316 transitions. [2020-04-18 03:07:22,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 03:07:22,730 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-04-18 03:07:22,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:22,748 INFO L225 Difference]: With dead ends: 5844 [2020-04-18 03:07:22,748 INFO L226 Difference]: Without dead ends: 5479 [2020-04-18 03:07:22,749 INFO L678 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 [2020-04-18 03:07:22,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2020-04-18 03:07:22,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 5479. [2020-04-18 03:07:22,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5479 states. [2020-04-18 03:07:22,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5479 states to 5479 states and 24493 transitions. [2020-04-18 03:07:22,929 INFO L78 Accepts]: Start accepts. Automaton has 5479 states and 24493 transitions. Word has length 3 [2020-04-18 03:07:22,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:22,930 INFO L479 AbstractCegarLoop]: Abstraction has 5479 states and 24493 transitions. [2020-04-18 03:07:22,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 03:07:22,930 INFO L276 IsEmpty]: Start isEmpty. Operand 5479 states and 24493 transitions. [2020-04-18 03:07:22,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 03:07:22,930 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:22,930 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:22,930 INFO L427 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]=== [2020-04-18 03:07:22,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:22,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1344335463, now seen corresponding path program 1 times [2020-04-18 03:07:22,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:22,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141331525] [2020-04-18 03:07:22,931 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:22,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:22,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:22,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141331525] [2020-04-18 03:07:22,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:22,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 03:07:22,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807038778] [2020-04-18 03:07:22,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 03:07:22,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:22,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 03:07:22,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 03:07:22,961 INFO L87 Difference]: Start difference. First operand 5479 states and 24493 transitions. Second operand 5 states. [2020-04-18 03:07:23,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:23,095 INFO L93 Difference]: Finished difference Result 9673 states and 40333 transitions. [2020-04-18 03:07:23,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 03:07:23,095 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-04-18 03:07:23,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:23,116 INFO L225 Difference]: With dead ends: 9673 [2020-04-18 03:07:23,116 INFO L226 Difference]: Without dead ends: 9666 [2020-04-18 03:07:23,116 INFO L678 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 [2020-04-18 03:07:23,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9666 states. [2020-04-18 03:07:23,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9666 to 6331. [2020-04-18 03:07:23,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6331 states. [2020-04-18 03:07:23,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 28544 transitions. [2020-04-18 03:07:23,332 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 28544 transitions. Word has length 9 [2020-04-18 03:07:23,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:23,332 INFO L479 AbstractCegarLoop]: Abstraction has 6331 states and 28544 transitions. [2020-04-18 03:07:23,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 03:07:23,332 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 28544 transitions. [2020-04-18 03:07:23,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 03:07:23,332 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:23,333 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:23,333 INFO L427 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]=== [2020-04-18 03:07:23,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:23,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1513378118, now seen corresponding path program 1 times [2020-04-18 03:07:23,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:23,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115116400] [2020-04-18 03:07:23,333 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:23,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:23,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:07:23,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115116400] [2020-04-18 03:07:23,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:23,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 03:07:23,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908387212] [2020-04-18 03:07:23,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 03:07:23,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:23,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 03:07:23,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 03:07:23,366 INFO L87 Difference]: Start difference. First operand 6331 states and 28544 transitions. Second operand 5 states. [2020-04-18 03:07:24,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:24,109 INFO L93 Difference]: Finished difference Result 11081 states and 46826 transitions. [2020-04-18 03:07:24,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 03:07:24,110 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-18 03:07:24,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:24,149 INFO L225 Difference]: With dead ends: 11081 [2020-04-18 03:07:24,149 INFO L226 Difference]: Without dead ends: 11068 [2020-04-18 03:07:24,149 INFO L678 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 [2020-04-18 03:07:24,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11068 states. [2020-04-18 03:07:24,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11068 to 7391. [2020-04-18 03:07:24,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7391 states. [2020-04-18 03:07:24,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7391 states to 7391 states and 33694 transitions. [2020-04-18 03:07:24,466 INFO L78 Accepts]: Start accepts. Automaton has 7391 states and 33694 transitions. Word has length 13 [2020-04-18 03:07:24,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:24,466 INFO L479 AbstractCegarLoop]: Abstraction has 7391 states and 33694 transitions. [2020-04-18 03:07:24,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 03:07:24,466 INFO L276 IsEmpty]: Start isEmpty. Operand 7391 states and 33694 transitions. [2020-04-18 03:07:24,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 03:07:24,467 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:24,467 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:24,467 INFO L427 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]=== [2020-04-18 03:07:24,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:24,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1678648171, now seen corresponding path program 1 times [2020-04-18 03:07:24,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:24,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334237555] [2020-04-18 03:07:24,468 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:24,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:24,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:24,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334237555] [2020-04-18 03:07:24,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596414666] [2020-04-18 03:07:24,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:07:24,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:24,591 INFO L264 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2020-04-18 03:07:24,592 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:24,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:24,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:24,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-04-18 03:07:24,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976257287] [2020-04-18 03:07:24,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 03:07:24,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:24,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 03:07:24,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-04-18 03:07:24,652 INFO L87 Difference]: Start difference. First operand 7391 states and 33694 transitions. Second operand 12 states. [2020-04-18 03:07:24,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:25,000 INFO L93 Difference]: Finished difference Result 16749 states and 66010 transitions. [2020-04-18 03:07:25,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:07:25,000 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-04-18 03:07:25,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:25,043 INFO L225 Difference]: With dead ends: 16749 [2020-04-18 03:07:25,043 INFO L226 Difference]: Without dead ends: 16736 [2020-04-18 03:07:25,044 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-04-18 03:07:25,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16736 states. [2020-04-18 03:07:25,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16736 to 7303. [2020-04-18 03:07:25,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7303 states. [2020-04-18 03:07:25,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 33260 transitions. [2020-04-18 03:07:25,499 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 33260 transitions. Word has length 15 [2020-04-18 03:07:25,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:25,499 INFO L479 AbstractCegarLoop]: Abstraction has 7303 states and 33260 transitions. [2020-04-18 03:07:25,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 03:07:25,499 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 33260 transitions. [2020-04-18 03:07:25,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 03:07:25,500 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:25,500 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:25,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:25,701 INFO L427 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]=== [2020-04-18 03:07:25,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:25,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1637555113, now seen corresponding path program 2 times [2020-04-18 03:07:25,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:25,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102760225] [2020-04-18 03:07:25,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:25,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:25,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:07:25,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102760225] [2020-04-18 03:07:25,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:25,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 03:07:25,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987813087] [2020-04-18 03:07:25,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 03:07:25,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:25,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 03:07:25,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 03:07:25,758 INFO L87 Difference]: Start difference. First operand 7303 states and 33260 transitions. Second operand 7 states. [2020-04-18 03:07:26,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:26,178 INFO L93 Difference]: Finished difference Result 17085 states and 67393 transitions. [2020-04-18 03:07:26,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:07:26,179 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-04-18 03:07:26,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:26,236 INFO L225 Difference]: With dead ends: 17085 [2020-04-18 03:07:26,236 INFO L226 Difference]: Without dead ends: 17071 [2020-04-18 03:07:26,237 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-04-18 03:07:26,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17071 states. [2020-04-18 03:07:26,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17071 to 7048. [2020-04-18 03:07:26,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7048 states. [2020-04-18 03:07:26,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7048 states to 7048 states and 32136 transitions. [2020-04-18 03:07:26,694 INFO L78 Accepts]: Start accepts. Automaton has 7048 states and 32136 transitions. Word has length 15 [2020-04-18 03:07:26,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:26,694 INFO L479 AbstractCegarLoop]: Abstraction has 7048 states and 32136 transitions. [2020-04-18 03:07:26,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 03:07:26,694 INFO L276 IsEmpty]: Start isEmpty. Operand 7048 states and 32136 transitions. [2020-04-18 03:07:26,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 03:07:26,695 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:26,695 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:26,696 INFO L427 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]=== [2020-04-18 03:07:26,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:26,696 INFO L82 PathProgramCache]: Analyzing trace with hash -288445665, now seen corresponding path program 1 times [2020-04-18 03:07:26,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:26,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398072326] [2020-04-18 03:07:26,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:26,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:26,748 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 03:07:26,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398072326] [2020-04-18 03:07:26,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:26,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 03:07:26,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560853175] [2020-04-18 03:07:26,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 03:07:26,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:26,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 03:07:26,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 03:07:26,751 INFO L87 Difference]: Start difference. First operand 7048 states and 32136 transitions. Second operand 5 states. [2020-04-18 03:07:26,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:26,903 INFO L93 Difference]: Finished difference Result 12234 states and 52488 transitions. [2020-04-18 03:07:26,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 03:07:26,904 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-04-18 03:07:26,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:26,942 INFO L225 Difference]: With dead ends: 12234 [2020-04-18 03:07:26,942 INFO L226 Difference]: Without dead ends: 12212 [2020-04-18 03:07:26,943 INFO L678 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 [2020-04-18 03:07:27,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12212 states. [2020-04-18 03:07:27,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12212 to 8342. [2020-04-18 03:07:27,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8342 states. [2020-04-18 03:07:27,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8342 states to 8342 states and 38278 transitions. [2020-04-18 03:07:27,482 INFO L78 Accepts]: Start accepts. Automaton has 8342 states and 38278 transitions. Word has length 17 [2020-04-18 03:07:27,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:27,483 INFO L479 AbstractCegarLoop]: Abstraction has 8342 states and 38278 transitions. [2020-04-18 03:07:27,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 03:07:27,483 INFO L276 IsEmpty]: Start isEmpty. Operand 8342 states and 38278 transitions. [2020-04-18 03:07:27,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 03:07:27,488 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:27,488 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:27,488 INFO L427 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]=== [2020-04-18 03:07:27,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:27,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1255672082, now seen corresponding path program 1 times [2020-04-18 03:07:27,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:27,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271775430] [2020-04-18 03:07:27,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:27,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:27,536 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-04-18 03:07:27,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271775430] [2020-04-18 03:07:27,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546896723] [2020-04-18 03:07:27,537 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:07:27,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:27,612 INFO L264 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 7 conjunts are in the unsatisfiable core [2020-04-18 03:07:27,613 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:27,667 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-04-18 03:07:27,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:27,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-04-18 03:07:27,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001063683] [2020-04-18 03:07:27,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 03:07:27,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:27,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 03:07:27,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-04-18 03:07:27,669 INFO L87 Difference]: Start difference. First operand 8342 states and 38278 transitions. Second operand 12 states. [2020-04-18 03:07:28,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:28,018 INFO L93 Difference]: Finished difference Result 19016 states and 76191 transitions. [2020-04-18 03:07:28,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:07:28,018 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-04-18 03:07:28,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:28,062 INFO L225 Difference]: With dead ends: 19016 [2020-04-18 03:07:28,062 INFO L226 Difference]: Without dead ends: 18998 [2020-04-18 03:07:28,063 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-04-18 03:07:28,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18998 states. [2020-04-18 03:07:28,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18998 to 8452. [2020-04-18 03:07:28,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8452 states. [2020-04-18 03:07:28,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8452 states to 8452 states and 38704 transitions. [2020-04-18 03:07:28,372 INFO L78 Accepts]: Start accepts. Automaton has 8452 states and 38704 transitions. Word has length 19 [2020-04-18 03:07:28,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:28,372 INFO L479 AbstractCegarLoop]: Abstraction has 8452 states and 38704 transitions. [2020-04-18 03:07:28,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 03:07:28,373 INFO L276 IsEmpty]: Start isEmpty. Operand 8452 states and 38704 transitions. [2020-04-18 03:07:28,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 03:07:28,374 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:28,374 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:28,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:28,577 INFO L427 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]=== [2020-04-18 03:07:28,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:28,578 INFO L82 PathProgramCache]: Analyzing trace with hash 402059005, now seen corresponding path program 1 times [2020-04-18 03:07:28,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:28,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190212827] [2020-04-18 03:07:28,579 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:28,634 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:07:28,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190212827] [2020-04-18 03:07:28,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868842830] [2020-04-18 03:07:28,635 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:07:28,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:28,717 INFO L264 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 7 conjunts are in the unsatisfiable core [2020-04-18 03:07:28,718 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:28,776 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:07:28,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:28,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-04-18 03:07:28,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512762212] [2020-04-18 03:07:28,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 03:07:28,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:28,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 03:07:28,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-04-18 03:07:28,778 INFO L87 Difference]: Start difference. First operand 8452 states and 38704 transitions. Second operand 12 states. [2020-04-18 03:07:29,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:29,367 INFO L93 Difference]: Finished difference Result 19670 states and 79028 transitions. [2020-04-18 03:07:29,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:07:29,368 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-04-18 03:07:29,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:29,440 INFO L225 Difference]: With dead ends: 19670 [2020-04-18 03:07:29,440 INFO L226 Difference]: Without dead ends: 19645 [2020-04-18 03:07:29,440 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-04-18 03:07:29,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19645 states. [2020-04-18 03:07:29,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19645 to 8480. [2020-04-18 03:07:29,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8480 states. [2020-04-18 03:07:29,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8480 states to 8480 states and 38825 transitions. [2020-04-18 03:07:29,942 INFO L78 Accepts]: Start accepts. Automaton has 8480 states and 38825 transitions. Word has length 19 [2020-04-18 03:07:29,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:29,943 INFO L479 AbstractCegarLoop]: Abstraction has 8480 states and 38825 transitions. [2020-04-18 03:07:29,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 03:07:29,943 INFO L276 IsEmpty]: Start isEmpty. Operand 8480 states and 38825 transitions. [2020-04-18 03:07:29,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 03:07:29,945 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:29,945 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:30,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:30,149 INFO L427 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]=== [2020-04-18 03:07:30,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:30,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1976597437, now seen corresponding path program 2 times [2020-04-18 03:07:30,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:30,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895821420] [2020-04-18 03:07:30,150 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:30,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:30,198 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 03:07:30,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895821420] [2020-04-18 03:07:30,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:30,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 03:07:30,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293633672] [2020-04-18 03:07:30,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 03:07:30,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:30,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 03:07:30,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 03:07:30,200 INFO L87 Difference]: Start difference. First operand 8480 states and 38825 transitions. Second operand 7 states. [2020-04-18 03:07:30,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:30,650 INFO L93 Difference]: Finished difference Result 19852 states and 79846 transitions. [2020-04-18 03:07:30,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:07:30,650 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-04-18 03:07:30,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:30,705 INFO L225 Difference]: With dead ends: 19852 [2020-04-18 03:07:30,705 INFO L226 Difference]: Without dead ends: 19827 [2020-04-18 03:07:30,706 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-04-18 03:07:30,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19827 states. [2020-04-18 03:07:31,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19827 to 8379. [2020-04-18 03:07:31,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8379 states. [2020-04-18 03:07:31,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8379 states to 8379 states and 38406 transitions. [2020-04-18 03:07:31,967 INFO L78 Accepts]: Start accepts. Automaton has 8379 states and 38406 transitions. Word has length 19 [2020-04-18 03:07:31,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:31,967 INFO L479 AbstractCegarLoop]: Abstraction has 8379 states and 38406 transitions. [2020-04-18 03:07:31,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 03:07:31,968 INFO L276 IsEmpty]: Start isEmpty. Operand 8379 states and 38406 transitions. [2020-04-18 03:07:31,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 03:07:31,969 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:31,969 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:31,969 INFO L427 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]=== [2020-04-18 03:07:31,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:31,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1976577008, now seen corresponding path program 2 times [2020-04-18 03:07:31,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:31,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756076571] [2020-04-18 03:07:31,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:31,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:32,016 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 03:07:32,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756076571] [2020-04-18 03:07:32,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:32,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 03:07:32,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907799696] [2020-04-18 03:07:32,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 03:07:32,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:32,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 03:07:32,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 03:07:32,018 INFO L87 Difference]: Start difference. First operand 8379 states and 38406 transitions. Second operand 7 states. [2020-04-18 03:07:32,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:32,341 INFO L93 Difference]: Finished difference Result 19555 states and 78564 transitions. [2020-04-18 03:07:32,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:07:32,342 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-04-18 03:07:32,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:32,381 INFO L225 Difference]: With dead ends: 19555 [2020-04-18 03:07:32,382 INFO L226 Difference]: Without dead ends: 19530 [2020-04-18 03:07:32,382 INFO L678 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 [2020-04-18 03:07:32,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19530 states. [2020-04-18 03:07:32,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19530 to 8317. [2020-04-18 03:07:32,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8317 states. [2020-04-18 03:07:32,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8317 states to 8317 states and 38184 transitions. [2020-04-18 03:07:32,688 INFO L78 Accepts]: Start accepts. Automaton has 8317 states and 38184 transitions. Word has length 19 [2020-04-18 03:07:32,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:32,689 INFO L479 AbstractCegarLoop]: Abstraction has 8317 states and 38184 transitions. [2020-04-18 03:07:32,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 03:07:32,689 INFO L276 IsEmpty]: Start isEmpty. Operand 8317 states and 38184 transitions. [2020-04-18 03:07:32,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 03:07:32,690 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:32,690 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:32,690 INFO L427 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]=== [2020-04-18 03:07:32,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:32,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1389591796, now seen corresponding path program 1 times [2020-04-18 03:07:32,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:32,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773525815] [2020-04-18 03:07:32,690 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:32,745 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:32,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773525815] [2020-04-18 03:07:32,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900806399] [2020-04-18 03:07:32,746 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:07:32,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:32,820 INFO L264 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:07:32,821 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:32,906 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:32,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:32,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:07:32,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683827210] [2020-04-18 03:07:32,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:07:32,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:32,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:07:32,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:07:32,908 INFO L87 Difference]: Start difference. First operand 8317 states and 38184 transitions. Second operand 16 states. [2020-04-18 03:07:33,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:33,999 INFO L93 Difference]: Finished difference Result 26969 states and 101544 transitions. [2020-04-18 03:07:33,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:07:33,999 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-04-18 03:07:33,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:34,054 INFO L225 Difference]: With dead ends: 26969 [2020-04-18 03:07:34,054 INFO L226 Difference]: Without dead ends: 26957 [2020-04-18 03:07:34,055 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:07:34,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26957 states. [2020-04-18 03:07:34,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26957 to 8204. [2020-04-18 03:07:34,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8204 states. [2020-04-18 03:07:34,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8204 states to 8204 states and 37628 transitions. [2020-04-18 03:07:34,396 INFO L78 Accepts]: Start accepts. Automaton has 8204 states and 37628 transitions. Word has length 21 [2020-04-18 03:07:34,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:34,397 INFO L479 AbstractCegarLoop]: Abstraction has 8204 states and 37628 transitions. [2020-04-18 03:07:34,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:07:34,397 INFO L276 IsEmpty]: Start isEmpty. Operand 8204 states and 37628 transitions. [2020-04-18 03:07:34,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 03:07:34,398 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:34,398 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:34,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:34,599 INFO L427 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]=== [2020-04-18 03:07:34,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:34,599 INFO L82 PathProgramCache]: Analyzing trace with hash 184946636, now seen corresponding path program 2 times [2020-04-18 03:07:34,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:34,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593020329] [2020-04-18 03:07:34,601 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:34,656 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-04-18 03:07:34,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593020329] [2020-04-18 03:07:34,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104446816] [2020-04-18 03:07:34,657 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:07:34,738 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 03:07:34,738 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:07:34,739 INFO L264 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:07:34,740 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:34,855 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-04-18 03:07:34,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:34,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:07:34,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272480057] [2020-04-18 03:07:34,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:07:34,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:34,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:07:34,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:07:34,857 INFO L87 Difference]: Start difference. First operand 8204 states and 37628 transitions. Second operand 16 states. [2020-04-18 03:07:35,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:35,734 INFO L93 Difference]: Finished difference Result 26661 states and 100277 transitions. [2020-04-18 03:07:35,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:07:35,735 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-04-18 03:07:35,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:35,791 INFO L225 Difference]: With dead ends: 26661 [2020-04-18 03:07:35,791 INFO L226 Difference]: Without dead ends: 26645 [2020-04-18 03:07:35,792 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:07:35,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26645 states. [2020-04-18 03:07:36,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26645 to 8091. [2020-04-18 03:07:36,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8091 states. [2020-04-18 03:07:36,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8091 states to 8091 states and 37076 transitions. [2020-04-18 03:07:36,297 INFO L78 Accepts]: Start accepts. Automaton has 8091 states and 37076 transitions. Word has length 21 [2020-04-18 03:07:36,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:36,298 INFO L479 AbstractCegarLoop]: Abstraction has 8091 states and 37076 transitions. [2020-04-18 03:07:36,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:07:36,298 INFO L276 IsEmpty]: Start isEmpty. Operand 8091 states and 37076 transitions. [2020-04-18 03:07:36,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 03:07:36,299 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:36,299 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:36,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:36,500 INFO L427 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]=== [2020-04-18 03:07:36,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:36,501 INFO L82 PathProgramCache]: Analyzing trace with hash -231570740, now seen corresponding path program 3 times [2020-04-18 03:07:36,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:36,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240642379] [2020-04-18 03:07:36,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:36,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:36,567 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:07:36,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240642379] [2020-04-18 03:07:36,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605902510] [2020-04-18 03:07:36,568 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:07:36,641 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-18 03:07:36,642 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:07:36,642 INFO L264 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:07:36,643 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:36,748 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:07:36,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:36,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:07:36,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28933827] [2020-04-18 03:07:36,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:07:36,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:36,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:07:36,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:07:36,750 INFO L87 Difference]: Start difference. First operand 8091 states and 37076 transitions. Second operand 16 states. [2020-04-18 03:07:37,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:37,729 INFO L93 Difference]: Finished difference Result 26686 states and 100402 transitions. [2020-04-18 03:07:37,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:07:37,730 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-04-18 03:07:37,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:37,810 INFO L225 Difference]: With dead ends: 26686 [2020-04-18 03:07:37,810 INFO L226 Difference]: Without dead ends: 26674 [2020-04-18 03:07:37,811 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:07:37,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26674 states. [2020-04-18 03:07:38,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26674 to 7861. [2020-04-18 03:07:38,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7861 states. [2020-04-18 03:07:38,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7861 states to 7861 states and 36066 transitions. [2020-04-18 03:07:38,215 INFO L78 Accepts]: Start accepts. Automaton has 7861 states and 36066 transitions. Word has length 21 [2020-04-18 03:07:38,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:38,216 INFO L479 AbstractCegarLoop]: Abstraction has 7861 states and 36066 transitions. [2020-04-18 03:07:38,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:07:38,216 INFO L276 IsEmpty]: Start isEmpty. Operand 7861 states and 36066 transitions. [2020-04-18 03:07:38,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 03:07:38,217 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:38,217 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:38,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:38,418 INFO L427 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]=== [2020-04-18 03:07:38,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:38,418 INFO L82 PathProgramCache]: Analyzing trace with hash -168366002, now seen corresponding path program 4 times [2020-04-18 03:07:38,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:38,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552652751] [2020-04-18 03:07:38,419 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:38,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:38,491 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:07:38,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552652751] [2020-04-18 03:07:38,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625784451] [2020-04-18 03:07:38,492 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:07:38,581 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 03:07:38,581 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:07:38,582 INFO L264 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:07:38,583 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:38,677 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:07:38,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:38,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:07:38,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272858252] [2020-04-18 03:07:38,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:07:38,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:38,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:07:38,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:07:38,679 INFO L87 Difference]: Start difference. First operand 7861 states and 36066 transitions. Second operand 16 states. [2020-04-18 03:07:39,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:39,677 INFO L93 Difference]: Finished difference Result 26489 states and 99650 transitions. [2020-04-18 03:07:39,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:07:39,677 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-04-18 03:07:39,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:39,737 INFO L225 Difference]: With dead ends: 26489 [2020-04-18 03:07:39,737 INFO L226 Difference]: Without dead ends: 26473 [2020-04-18 03:07:39,738 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:07:39,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26473 states. [2020-04-18 03:07:40,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26473 to 7748. [2020-04-18 03:07:40,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7748 states. [2020-04-18 03:07:40,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7748 states to 7748 states and 35514 transitions. [2020-04-18 03:07:40,087 INFO L78 Accepts]: Start accepts. Automaton has 7748 states and 35514 transitions. Word has length 21 [2020-04-18 03:07:40,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:40,087 INFO L479 AbstractCegarLoop]: Abstraction has 7748 states and 35514 transitions. [2020-04-18 03:07:40,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:07:40,087 INFO L276 IsEmpty]: Start isEmpty. Operand 7748 states and 35514 transitions. [2020-04-18 03:07:40,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 03:07:40,088 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:40,089 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:40,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:40,289 INFO L427 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]=== [2020-04-18 03:07:40,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:40,290 INFO L82 PathProgramCache]: Analyzing trace with hash 210203517, now seen corresponding path program 1 times [2020-04-18 03:07:40,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:40,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937179774] [2020-04-18 03:07:40,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:40,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:40,323 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 03:07:40,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937179774] [2020-04-18 03:07:40,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:40,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 03:07:40,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975257257] [2020-04-18 03:07:40,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 03:07:40,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:40,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 03:07:40,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 03:07:40,324 INFO L87 Difference]: Start difference. First operand 7748 states and 35514 transitions. Second operand 5 states. [2020-04-18 03:07:40,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:40,456 INFO L93 Difference]: Finished difference Result 13251 states and 57501 transitions. [2020-04-18 03:07:40,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 03:07:40,457 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-04-18 03:07:40,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:40,485 INFO L225 Difference]: With dead ends: 13251 [2020-04-18 03:07:40,485 INFO L226 Difference]: Without dead ends: 13220 [2020-04-18 03:07:40,486 INFO L678 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 [2020-04-18 03:07:40,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13220 states. [2020-04-18 03:07:40,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13220 to 9255. [2020-04-18 03:07:40,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9255 states. [2020-04-18 03:07:40,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9255 states to 9255 states and 42368 transitions. [2020-04-18 03:07:40,747 INFO L78 Accepts]: Start accepts. Automaton has 9255 states and 42368 transitions. Word has length 21 [2020-04-18 03:07:40,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:40,747 INFO L479 AbstractCegarLoop]: Abstraction has 9255 states and 42368 transitions. [2020-04-18 03:07:40,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 03:07:40,747 INFO L276 IsEmpty]: Start isEmpty. Operand 9255 states and 42368 transitions. [2020-04-18 03:07:40,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 03:07:40,749 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:40,749 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:40,749 INFO L427 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]=== [2020-04-18 03:07:40,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:40,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1134578958, now seen corresponding path program 5 times [2020-04-18 03:07:40,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:40,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102802674] [2020-04-18 03:07:40,750 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:40,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:40,824 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 03:07:40,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102802674] [2020-04-18 03:07:40,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:40,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 03:07:40,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654852991] [2020-04-18 03:07:40,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 03:07:40,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:40,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 03:07:40,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-04-18 03:07:40,825 INFO L87 Difference]: Start difference. First operand 9255 states and 42368 transitions. Second operand 9 states. [2020-04-18 03:07:41,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:41,740 INFO L93 Difference]: Finished difference Result 29788 states and 113841 transitions. [2020-04-18 03:07:41,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:07:41,740 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-04-18 03:07:41,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:41,814 INFO L225 Difference]: With dead ends: 29788 [2020-04-18 03:07:41,815 INFO L226 Difference]: Without dead ends: 29770 [2020-04-18 03:07:41,815 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-04-18 03:07:41,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29770 states. [2020-04-18 03:07:42,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29770 to 8964. [2020-04-18 03:07:42,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8964 states. [2020-04-18 03:07:42,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8964 states to 8964 states and 41031 transitions. [2020-04-18 03:07:42,238 INFO L78 Accepts]: Start accepts. Automaton has 8964 states and 41031 transitions. Word has length 21 [2020-04-18 03:07:42,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:42,239 INFO L479 AbstractCegarLoop]: Abstraction has 8964 states and 41031 transitions. [2020-04-18 03:07:42,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 03:07:42,239 INFO L276 IsEmpty]: Start isEmpty. Operand 8964 states and 41031 transitions. [2020-04-18 03:07:42,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 03:07:42,240 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:42,240 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:42,241 INFO L427 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]=== [2020-04-18 03:07:42,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:42,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1114967118, now seen corresponding path program 6 times [2020-04-18 03:07:42,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:42,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577452581] [2020-04-18 03:07:42,241 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:42,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:42,319 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 03:07:42,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577452581] [2020-04-18 03:07:42,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:42,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 03:07:42,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535397275] [2020-04-18 03:07:42,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 03:07:42,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:42,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 03:07:42,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-04-18 03:07:42,321 INFO L87 Difference]: Start difference. First operand 8964 states and 41031 transitions. Second operand 9 states. [2020-04-18 03:07:43,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:43,131 INFO L93 Difference]: Finished difference Result 29379 states and 112099 transitions. [2020-04-18 03:07:43,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:07:43,131 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-04-18 03:07:43,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:43,190 INFO L225 Difference]: With dead ends: 29379 [2020-04-18 03:07:43,190 INFO L226 Difference]: Without dead ends: 29356 [2020-04-18 03:07:43,190 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-04-18 03:07:43,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29356 states. [2020-04-18 03:07:43,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29356 to 8573. [2020-04-18 03:07:43,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8573 states. [2020-04-18 03:07:43,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8573 states to 8573 states and 39353 transitions. [2020-04-18 03:07:43,602 INFO L78 Accepts]: Start accepts. Automaton has 8573 states and 39353 transitions. Word has length 21 [2020-04-18 03:07:43,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:43,603 INFO L479 AbstractCegarLoop]: Abstraction has 8573 states and 39353 transitions. [2020-04-18 03:07:43,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 03:07:43,603 INFO L276 IsEmpty]: Start isEmpty. Operand 8573 states and 39353 transitions. [2020-04-18 03:07:43,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 03:07:43,604 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:43,604 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:43,604 INFO L427 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]=== [2020-04-18 03:07:43,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:43,605 INFO L82 PathProgramCache]: Analyzing trace with hash 715669452, now seen corresponding path program 1 times [2020-04-18 03:07:43,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:43,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822813322] [2020-04-18 03:07:43,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:43,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:43,794 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 03:07:43,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822813322] [2020-04-18 03:07:43,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998584993] [2020-04-18 03:07:43,794 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:07:43,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:43,867 INFO L264 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core [2020-04-18 03:07:43,867 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:43,911 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 03:07:43,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:43,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-04-18 03:07:43,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983363286] [2020-04-18 03:07:43,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 03:07:43,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:43,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 03:07:43,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-04-18 03:07:43,914 INFO L87 Difference]: Start difference. First operand 8573 states and 39353 transitions. Second operand 12 states. [2020-04-18 03:07:44,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:44,306 INFO L93 Difference]: Finished difference Result 19727 states and 80274 transitions. [2020-04-18 03:07:44,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:07:44,307 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-04-18 03:07:44,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:44,352 INFO L225 Difference]: With dead ends: 19727 [2020-04-18 03:07:44,352 INFO L226 Difference]: Without dead ends: 19703 [2020-04-18 03:07:44,353 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-04-18 03:07:44,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19703 states. [2020-04-18 03:07:44,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19703 to 8847. [2020-04-18 03:07:44,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8847 states. [2020-04-18 03:07:44,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8847 states to 8847 states and 40495 transitions. [2020-04-18 03:07:44,651 INFO L78 Accepts]: Start accepts. Automaton has 8847 states and 40495 transitions. Word has length 23 [2020-04-18 03:07:44,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:44,652 INFO L479 AbstractCegarLoop]: Abstraction has 8847 states and 40495 transitions. [2020-04-18 03:07:44,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 03:07:44,652 INFO L276 IsEmpty]: Start isEmpty. Operand 8847 states and 40495 transitions. [2020-04-18 03:07:44,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 03:07:44,654 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:44,654 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:44,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:44,856 INFO L427 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]=== [2020-04-18 03:07:44,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:44,857 INFO L82 PathProgramCache]: Analyzing trace with hash 504272987, now seen corresponding path program 1 times [2020-04-18 03:07:44,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:44,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836753873] [2020-04-18 03:07:44,857 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:44,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:44,905 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 03:07:44,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836753873] [2020-04-18 03:07:44,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253182876] [2020-04-18 03:07:44,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:07:44,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:44,991 INFO L264 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core [2020-04-18 03:07:44,992 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:45,072 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 03:07:45,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:45,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-04-18 03:07:45,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839776090] [2020-04-18 03:07:45,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 03:07:45,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:45,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 03:07:45,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-04-18 03:07:45,075 INFO L87 Difference]: Start difference. First operand 8847 states and 40495 transitions. Second operand 12 states. [2020-04-18 03:07:45,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:45,460 INFO L93 Difference]: Finished difference Result 20694 states and 84261 transitions. [2020-04-18 03:07:45,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:07:45,460 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-04-18 03:07:45,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:45,503 INFO L225 Difference]: With dead ends: 20694 [2020-04-18 03:07:45,503 INFO L226 Difference]: Without dead ends: 20666 [2020-04-18 03:07:45,503 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-04-18 03:07:45,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20666 states. [2020-04-18 03:07:45,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20666 to 9115. [2020-04-18 03:07:45,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9115 states. [2020-04-18 03:07:45,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9115 states to 9115 states and 41679 transitions. [2020-04-18 03:07:45,814 INFO L78 Accepts]: Start accepts. Automaton has 9115 states and 41679 transitions. Word has length 23 [2020-04-18 03:07:45,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:45,815 INFO L479 AbstractCegarLoop]: Abstraction has 9115 states and 41679 transitions. [2020-04-18 03:07:45,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 03:07:45,815 INFO L276 IsEmpty]: Start isEmpty. Operand 9115 states and 41679 transitions. [2020-04-18 03:07:45,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 03:07:45,817 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:45,817 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:46,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:46,018 INFO L427 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]=== [2020-04-18 03:07:46,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:46,018 INFO L82 PathProgramCache]: Analyzing trace with hash 591685125, now seen corresponding path program 1 times [2020-04-18 03:07:46,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:46,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580447838] [2020-04-18 03:07:46,019 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:46,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:46,067 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 03:07:46,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580447838] [2020-04-18 03:07:46,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127657109] [2020-04-18 03:07:46,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:07:46,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:46,144 INFO L264 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core [2020-04-18 03:07:46,145 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:46,203 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 03:07:46,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:46,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-04-18 03:07:46,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134557901] [2020-04-18 03:07:46,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 03:07:46,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:46,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 03:07:46,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-04-18 03:07:46,205 INFO L87 Difference]: Start difference. First operand 9115 states and 41679 transitions. Second operand 12 states. [2020-04-18 03:07:46,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:46,701 INFO L93 Difference]: Finished difference Result 21396 states and 87360 transitions. [2020-04-18 03:07:46,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:07:46,701 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-04-18 03:07:46,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:46,747 INFO L225 Difference]: With dead ends: 21396 [2020-04-18 03:07:46,747 INFO L226 Difference]: Without dead ends: 21359 [2020-04-18 03:07:46,747 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-04-18 03:07:46,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21359 states. [2020-04-18 03:07:47,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21359 to 9320. [2020-04-18 03:07:47,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9320 states. [2020-04-18 03:07:47,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9320 states to 9320 states and 42648 transitions. [2020-04-18 03:07:47,075 INFO L78 Accepts]: Start accepts. Automaton has 9320 states and 42648 transitions. Word has length 23 [2020-04-18 03:07:47,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:47,076 INFO L479 AbstractCegarLoop]: Abstraction has 9320 states and 42648 transitions. [2020-04-18 03:07:47,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 03:07:47,076 INFO L276 IsEmpty]: Start isEmpty. Operand 9320 states and 42648 transitions. [2020-04-18 03:07:47,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 03:07:47,078 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:47,079 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:47,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:47,282 INFO L427 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]=== [2020-04-18 03:07:47,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:47,283 INFO L82 PathProgramCache]: Analyzing trace with hash 142124187, now seen corresponding path program 2 times [2020-04-18 03:07:47,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:47,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562968055] [2020-04-18 03:07:47,283 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:47,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:47,323 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 03:07:47,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562968055] [2020-04-18 03:07:47,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:47,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 03:07:47,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543930560] [2020-04-18 03:07:47,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 03:07:47,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:47,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 03:07:47,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 03:07:47,324 INFO L87 Difference]: Start difference. First operand 9320 states and 42648 transitions. Second operand 7 states. [2020-04-18 03:07:47,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:47,674 INFO L93 Difference]: Finished difference Result 21489 states and 87752 transitions. [2020-04-18 03:07:47,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:07:47,674 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-04-18 03:07:47,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:47,718 INFO L225 Difference]: With dead ends: 21489 [2020-04-18 03:07:47,718 INFO L226 Difference]: Without dead ends: 21452 [2020-04-18 03:07:47,719 INFO L678 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 [2020-04-18 03:07:47,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21452 states. [2020-04-18 03:07:48,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21452 to 9401. [2020-04-18 03:07:48,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9401 states. [2020-04-18 03:07:48,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9401 states to 9401 states and 43010 transitions. [2020-04-18 03:07:48,042 INFO L78 Accepts]: Start accepts. Automaton has 9401 states and 43010 transitions. Word has length 23 [2020-04-18 03:07:48,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:48,042 INFO L479 AbstractCegarLoop]: Abstraction has 9401 states and 43010 transitions. [2020-04-18 03:07:48,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 03:07:48,042 INFO L276 IsEmpty]: Start isEmpty. Operand 9401 states and 43010 transitions. [2020-04-18 03:07:48,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 03:07:48,045 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:48,045 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:48,045 INFO L427 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]=== [2020-04-18 03:07:48,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:48,045 INFO L82 PathProgramCache]: Analyzing trace with hash 142117429, now seen corresponding path program 2 times [2020-04-18 03:07:48,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:48,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040664448] [2020-04-18 03:07:48,046 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:48,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:48,101 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 03:07:48,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040664448] [2020-04-18 03:07:48,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:48,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 03:07:48,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336210452] [2020-04-18 03:07:48,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 03:07:48,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:48,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 03:07:48,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 03:07:48,103 INFO L87 Difference]: Start difference. First operand 9401 states and 43010 transitions. Second operand 7 states. [2020-04-18 03:07:48,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:48,443 INFO L93 Difference]: Finished difference Result 21198 states and 86437 transitions. [2020-04-18 03:07:48,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:07:48,443 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-04-18 03:07:48,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:48,486 INFO L225 Difference]: With dead ends: 21198 [2020-04-18 03:07:48,486 INFO L226 Difference]: Without dead ends: 21161 [2020-04-18 03:07:48,487 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-04-18 03:07:48,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21161 states. [2020-04-18 03:07:48,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21161 to 9396. [2020-04-18 03:07:48,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9396 states. [2020-04-18 03:07:48,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9396 states to 9396 states and 42985 transitions. [2020-04-18 03:07:48,816 INFO L78 Accepts]: Start accepts. Automaton has 9396 states and 42985 transitions. Word has length 23 [2020-04-18 03:07:48,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:48,817 INFO L479 AbstractCegarLoop]: Abstraction has 9396 states and 42985 transitions. [2020-04-18 03:07:48,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 03:07:48,817 INFO L276 IsEmpty]: Start isEmpty. Operand 9396 states and 42985 transitions. [2020-04-18 03:07:48,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 03:07:48,820 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:48,820 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:48,957 INFO L427 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]=== [2020-04-18 03:07:48,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:48,957 INFO L82 PathProgramCache]: Analyzing trace with hash 142103758, now seen corresponding path program 2 times [2020-04-18 03:07:48,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:48,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235122263] [2020-04-18 03:07:48,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:48,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:49,004 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 03:07:49,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235122263] [2020-04-18 03:07:49,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:49,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 03:07:49,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367939923] [2020-04-18 03:07:49,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 03:07:49,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:49,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 03:07:49,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 03:07:49,006 INFO L87 Difference]: Start difference. First operand 9396 states and 42985 transitions. Second operand 7 states. [2020-04-18 03:07:49,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:49,366 INFO L93 Difference]: Finished difference Result 21067 states and 85734 transitions. [2020-04-18 03:07:49,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:07:49,367 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-04-18 03:07:49,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:49,415 INFO L225 Difference]: With dead ends: 21067 [2020-04-18 03:07:49,416 INFO L226 Difference]: Without dead ends: 21030 [2020-04-18 03:07:49,416 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-04-18 03:07:49,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21030 states. [2020-04-18 03:07:49,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21030 to 9426. [2020-04-18 03:07:49,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9426 states. [2020-04-18 03:07:49,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9426 states to 9426 states and 43057 transitions. [2020-04-18 03:07:49,764 INFO L78 Accepts]: Start accepts. Automaton has 9426 states and 43057 transitions. Word has length 23 [2020-04-18 03:07:49,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:49,764 INFO L479 AbstractCegarLoop]: Abstraction has 9426 states and 43057 transitions. [2020-04-18 03:07:49,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 03:07:49,764 INFO L276 IsEmpty]: Start isEmpty. Operand 9426 states and 43057 transitions. [2020-04-18 03:07:49,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:07:49,767 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:49,767 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:49,767 INFO L427 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]=== [2020-04-18 03:07:49,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:49,768 INFO L82 PathProgramCache]: Analyzing trace with hash 925732074, now seen corresponding path program 1 times [2020-04-18 03:07:49,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:49,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658000931] [2020-04-18 03:07:49,768 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:49,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:49,830 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 03:07:49,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658000931] [2020-04-18 03:07:49,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111246546] [2020-04-18 03:07:49,831 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:07:49,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:49,920 INFO L264 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:07:49,921 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:50,017 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 03:07:50,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:50,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:07:50,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155186868] [2020-04-18 03:07:50,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:07:50,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:50,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:07:50,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:07:50,019 INFO L87 Difference]: Start difference. First operand 9426 states and 43057 transitions. Second operand 16 states. [2020-04-18 03:07:51,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:51,042 INFO L93 Difference]: Finished difference Result 30145 states and 115754 transitions. [2020-04-18 03:07:51,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:07:51,042 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-04-18 03:07:51,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:51,108 INFO L225 Difference]: With dead ends: 30145 [2020-04-18 03:07:51,108 INFO L226 Difference]: Without dead ends: 30125 [2020-04-18 03:07:51,109 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:07:51,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30125 states. [2020-04-18 03:07:51,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30125 to 9338. [2020-04-18 03:07:51,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9338 states. [2020-04-18 03:07:51,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9338 states to 9338 states and 42582 transitions. [2020-04-18 03:07:51,555 INFO L78 Accepts]: Start accepts. Automaton has 9338 states and 42582 transitions. Word has length 25 [2020-04-18 03:07:51,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:51,555 INFO L479 AbstractCegarLoop]: Abstraction has 9338 states and 42582 transitions. [2020-04-18 03:07:51,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:07:51,555 INFO L276 IsEmpty]: Start isEmpty. Operand 9338 states and 42582 transitions. [2020-04-18 03:07:51,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:07:51,558 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:51,558 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:51,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:51,759 INFO L427 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]=== [2020-04-18 03:07:51,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:51,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1013144212, now seen corresponding path program 1 times [2020-04-18 03:07:51,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:51,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380744707] [2020-04-18 03:07:51,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:51,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:51,829 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 03:07:51,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380744707] [2020-04-18 03:07:51,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914866567] [2020-04-18 03:07:51,830 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:07:51,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:51,905 INFO L264 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:07:51,906 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:51,984 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 03:07:51,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:51,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:07:51,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194366701] [2020-04-18 03:07:51,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:07:51,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:51,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:07:51,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:07:51,986 INFO L87 Difference]: Start difference. First operand 9338 states and 42582 transitions. Second operand 16 states. [2020-04-18 03:07:52,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:52,932 INFO L93 Difference]: Finished difference Result 29696 states and 113916 transitions. [2020-04-18 03:07:52,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:07:52,932 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-04-18 03:07:52,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:52,993 INFO L225 Difference]: With dead ends: 29696 [2020-04-18 03:07:52,993 INFO L226 Difference]: Without dead ends: 29676 [2020-04-18 03:07:52,993 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:07:53,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29676 states. [2020-04-18 03:07:53,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29676 to 9291. [2020-04-18 03:07:53,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9291 states. [2020-04-18 03:07:53,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9291 states to 9291 states and 42295 transitions. [2020-04-18 03:07:53,390 INFO L78 Accepts]: Start accepts. Automaton has 9291 states and 42295 transitions. Word has length 25 [2020-04-18 03:07:53,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:53,390 INFO L479 AbstractCegarLoop]: Abstraction has 9291 states and 42295 transitions. [2020-04-18 03:07:53,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:07:53,390 INFO L276 IsEmpty]: Start isEmpty. Operand 9291 states and 42295 transitions. [2020-04-18 03:07:53,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:07:53,393 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:53,393 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:53,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:53,593 INFO L427 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]=== [2020-04-18 03:07:53,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:53,594 INFO L82 PathProgramCache]: Analyzing trace with hash 563583274, now seen corresponding path program 2 times [2020-04-18 03:07:53,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:53,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189924356] [2020-04-18 03:07:53,595 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:53,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:53,655 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 03:07:53,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189924356] [2020-04-18 03:07:53,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034547489] [2020-04-18 03:07:53,656 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:07:53,730 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 03:07:53,730 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:07:53,731 INFO L264 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:07:53,732 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:53,810 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 03:07:53,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:53,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:07:53,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156090486] [2020-04-18 03:07:53,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:07:53,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:53,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:07:53,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:07:53,812 INFO L87 Difference]: Start difference. First operand 9291 states and 42295 transitions. Second operand 16 states. [2020-04-18 03:07:54,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:54,681 INFO L93 Difference]: Finished difference Result 29267 states and 112142 transitions. [2020-04-18 03:07:54,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:07:54,681 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-04-18 03:07:54,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:54,742 INFO L225 Difference]: With dead ends: 29267 [2020-04-18 03:07:54,743 INFO L226 Difference]: Without dead ends: 29245 [2020-04-18 03:07:54,743 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:07:54,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29245 states. [2020-04-18 03:07:55,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29245 to 9288. [2020-04-18 03:07:55,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9288 states. [2020-04-18 03:07:55,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9288 states to 9288 states and 42242 transitions. [2020-04-18 03:07:55,144 INFO L78 Accepts]: Start accepts. Automaton has 9288 states and 42242 transitions. Word has length 25 [2020-04-18 03:07:55,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:55,144 INFO L479 AbstractCegarLoop]: Abstraction has 9288 states and 42242 transitions. [2020-04-18 03:07:55,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:07:55,144 INFO L276 IsEmpty]: Start isEmpty. Operand 9288 states and 42242 transitions. [2020-04-18 03:07:55,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:07:55,147 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:55,147 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:55,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:55,348 INFO L427 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]=== [2020-04-18 03:07:55,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:55,348 INFO L82 PathProgramCache]: Analyzing trace with hash 563576516, now seen corresponding path program 2 times [2020-04-18 03:07:55,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:55,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448273761] [2020-04-18 03:07:55,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:55,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:55,432 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 03:07:55,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448273761] [2020-04-18 03:07:55,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838554080] [2020-04-18 03:07:55,432 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:07:55,521 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 03:07:55,521 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:07:55,522 INFO L264 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:07:55,523 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:55,610 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 03:07:55,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:55,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:07:55,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17988116] [2020-04-18 03:07:55,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:07:55,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:55,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:07:55,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:07:55,612 INFO L87 Difference]: Start difference. First operand 9288 states and 42242 transitions. Second operand 16 states. [2020-04-18 03:07:56,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:56,706 INFO L93 Difference]: Finished difference Result 28920 states and 110796 transitions. [2020-04-18 03:07:56,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:07:56,707 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-04-18 03:07:56,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:56,765 INFO L225 Difference]: With dead ends: 28920 [2020-04-18 03:07:56,765 INFO L226 Difference]: Without dead ends: 28898 [2020-04-18 03:07:56,765 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:07:56,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28898 states. [2020-04-18 03:07:57,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28898 to 9176. [2020-04-18 03:07:57,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9176 states. [2020-04-18 03:07:57,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9176 states to 9176 states and 41695 transitions. [2020-04-18 03:07:57,161 INFO L78 Accepts]: Start accepts. Automaton has 9176 states and 41695 transitions. Word has length 25 [2020-04-18 03:07:57,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:57,161 INFO L479 AbstractCegarLoop]: Abstraction has 9176 states and 41695 transitions. [2020-04-18 03:07:57,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:07:57,161 INFO L276 IsEmpty]: Start isEmpty. Operand 9176 states and 41695 transitions. [2020-04-18 03:07:57,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:07:57,164 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:57,164 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:57,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:57,365 INFO L427 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]=== [2020-04-18 03:07:57,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:57,366 INFO L82 PathProgramCache]: Analyzing trace with hash -2052215638, now seen corresponding path program 3 times [2020-04-18 03:07:57,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:57,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900346626] [2020-04-18 03:07:57,367 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:57,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:57,426 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-04-18 03:07:57,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900346626] [2020-04-18 03:07:57,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718576888] [2020-04-18 03:07:57,427 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:07:57,506 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-04-18 03:07:57,507 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:07:57,507 INFO L264 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:07:57,508 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:57,585 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-04-18 03:07:57,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:57,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:07:57,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811278829] [2020-04-18 03:07:57,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:07:57,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:57,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:07:57,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:07:57,586 INFO L87 Difference]: Start difference. First operand 9176 states and 41695 transitions. Second operand 16 states. [2020-04-18 03:07:58,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:58,446 INFO L93 Difference]: Finished difference Result 29038 states and 111216 transitions. [2020-04-18 03:07:58,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:07:58,446 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-04-18 03:07:58,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:58,520 INFO L225 Difference]: With dead ends: 29038 [2020-04-18 03:07:58,520 INFO L226 Difference]: Without dead ends: 29018 [2020-04-18 03:07:58,520 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:07:58,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29018 states. [2020-04-18 03:07:58,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29018 to 9000. [2020-04-18 03:07:58,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9000 states. [2020-04-18 03:07:58,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9000 states to 9000 states and 40897 transitions. [2020-04-18 03:07:58,918 INFO L78 Accepts]: Start accepts. Automaton has 9000 states and 40897 transitions. Word has length 25 [2020-04-18 03:07:58,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:58,918 INFO L479 AbstractCegarLoop]: Abstraction has 9000 states and 40897 transitions. [2020-04-18 03:07:58,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:07:58,919 INFO L276 IsEmpty]: Start isEmpty. Operand 9000 states and 40897 transitions. [2020-04-18 03:07:58,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:07:58,921 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:58,921 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:59,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:59,124 INFO L427 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]=== [2020-04-18 03:07:59,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:59,124 INFO L82 PathProgramCache]: Analyzing trace with hash -275395741, now seen corresponding path program 1 times [2020-04-18 03:07:59,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:59,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156149402] [2020-04-18 03:07:59,125 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:59,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:59,204 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-04-18 03:07:59,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156149402] [2020-04-18 03:07:59,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761082679] [2020-04-18 03:07:59,205 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:07:59,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:59,311 INFO L264 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:07:59,312 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:59,437 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-04-18 03:07:59,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:59,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:07:59,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817819848] [2020-04-18 03:07:59,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:07:59,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:59,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:07:59,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:07:59,440 INFO L87 Difference]: Start difference. First operand 9000 states and 40897 transitions. Second operand 16 states. [2020-04-18 03:08:00,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:00,513 INFO L93 Difference]: Finished difference Result 29417 states and 113034 transitions. [2020-04-18 03:08:00,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:08:00,513 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-04-18 03:08:00,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:00,576 INFO L225 Difference]: With dead ends: 29417 [2020-04-18 03:08:00,576 INFO L226 Difference]: Without dead ends: 29397 [2020-04-18 03:08:00,576 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:08:00,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29397 states. [2020-04-18 03:08:00,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29397 to 8990. [2020-04-18 03:08:00,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8990 states. [2020-04-18 03:08:01,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8990 states to 8990 states and 40786 transitions. [2020-04-18 03:08:01,001 INFO L78 Accepts]: Start accepts. Automaton has 8990 states and 40786 transitions. Word has length 25 [2020-04-18 03:08:01,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:01,001 INFO L479 AbstractCegarLoop]: Abstraction has 8990 states and 40786 transitions. [2020-04-18 03:08:01,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:08:01,001 INFO L276 IsEmpty]: Start isEmpty. Operand 8990 states and 40786 transitions. [2020-04-18 03:08:01,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:08:01,004 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:01,004 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:01,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:08:01,205 INFO L427 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]=== [2020-04-18 03:08:01,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:01,205 INFO L82 PathProgramCache]: Analyzing trace with hash -724963437, now seen corresponding path program 2 times [2020-04-18 03:08:01,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:01,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605021309] [2020-04-18 03:08:01,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:01,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:01,260 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 03:08:01,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605021309] [2020-04-18 03:08:01,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036575565] [2020-04-18 03:08:01,260 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:08:01,330 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 03:08:01,330 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:08:01,331 INFO L264 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:08:01,332 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:08:01,416 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 03:08:01,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:08:01,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:08:01,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950673949] [2020-04-18 03:08:01,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:08:01,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:01,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:08:01,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:08:01,418 INFO L87 Difference]: Start difference. First operand 8990 states and 40786 transitions. Second operand 16 states. [2020-04-18 03:08:02,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:02,327 INFO L93 Difference]: Finished difference Result 29064 states and 111552 transitions. [2020-04-18 03:08:02,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:08:02,328 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-04-18 03:08:02,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:02,386 INFO L225 Difference]: With dead ends: 29064 [2020-04-18 03:08:02,387 INFO L226 Difference]: Without dead ends: 29037 [2020-04-18 03:08:02,387 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:08:02,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29037 states. [2020-04-18 03:08:02,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29037 to 8953. [2020-04-18 03:08:02,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8953 states. [2020-04-18 03:08:02,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8953 states to 8953 states and 40609 transitions. [2020-04-18 03:08:02,775 INFO L78 Accepts]: Start accepts. Automaton has 8953 states and 40609 transitions. Word has length 25 [2020-04-18 03:08:02,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:02,775 INFO L479 AbstractCegarLoop]: Abstraction has 8953 states and 40609 transitions. [2020-04-18 03:08:02,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:08:02,776 INFO L276 IsEmpty]: Start isEmpty. Operand 8953 states and 40609 transitions. [2020-04-18 03:08:02,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:08:02,780 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:02,780 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:02,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:08:02,984 INFO L427 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]=== [2020-04-18 03:08:02,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:02,984 INFO L82 PathProgramCache]: Analyzing trace with hash -724977108, now seen corresponding path program 4 times [2020-04-18 03:08:02,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:02,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128786521] [2020-04-18 03:08:02,985 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:02,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:03,046 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 03:08:03,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128786521] [2020-04-18 03:08:03,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290536081] [2020-04-18 03:08:03,047 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:08:03,122 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 03:08:03,122 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:08:03,123 INFO L264 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:08:03,124 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:08:03,203 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 03:08:03,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:08:03,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:08:03,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784292592] [2020-04-18 03:08:03,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:08:03,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:03,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:08:03,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:08:03,205 INFO L87 Difference]: Start difference. First operand 8953 states and 40609 transitions. Second operand 16 states. [2020-04-18 03:08:04,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:04,191 INFO L93 Difference]: Finished difference Result 28523 states and 109227 transitions. [2020-04-18 03:08:04,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:08:04,192 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-04-18 03:08:04,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:04,258 INFO L225 Difference]: With dead ends: 28523 [2020-04-18 03:08:04,258 INFO L226 Difference]: Without dead ends: 28501 [2020-04-18 03:08:04,258 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:08:04,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28501 states. [2020-04-18 03:08:04,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28501 to 8841. [2020-04-18 03:08:04,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8841 states. [2020-04-18 03:08:04,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8841 states to 8841 states and 40062 transitions. [2020-04-18 03:08:04,662 INFO L78 Accepts]: Start accepts. Automaton has 8841 states and 40062 transitions. Word has length 25 [2020-04-18 03:08:04,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:04,662 INFO L479 AbstractCegarLoop]: Abstraction has 8841 states and 40062 transitions. [2020-04-18 03:08:04,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:08:04,662 INFO L276 IsEmpty]: Start isEmpty. Operand 8841 states and 40062 transitions. [2020-04-18 03:08:04,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:08:04,667 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:04,667 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:04,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:08:04,868 INFO L427 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]=== [2020-04-18 03:08:04,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:04,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1969402905, now seen corresponding path program 3 times [2020-04-18 03:08:04,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:04,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115165288] [2020-04-18 03:08:04,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:04,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:04,934 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 03:08:04,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115165288] [2020-04-18 03:08:04,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762978696] [2020-04-18 03:08:04,934 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:08:05,006 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-18 03:08:05,006 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:08:05,007 INFO L264 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:08:05,007 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:08:05,084 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 03:08:05,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:08:05,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:08:05,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252115476] [2020-04-18 03:08:05,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:08:05,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:05,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:08:05,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:08:05,086 INFO L87 Difference]: Start difference. First operand 8841 states and 40062 transitions. Second operand 16 states. [2020-04-18 03:08:05,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:05,900 INFO L93 Difference]: Finished difference Result 28636 states and 109852 transitions. [2020-04-18 03:08:05,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:08:05,901 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-04-18 03:08:05,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:05,959 INFO L225 Difference]: With dead ends: 28636 [2020-04-18 03:08:05,959 INFO L226 Difference]: Without dead ends: 28616 [2020-04-18 03:08:05,959 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:08:06,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28616 states. [2020-04-18 03:08:06,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28616 to 8702. [2020-04-18 03:08:06,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8702 states. [2020-04-18 03:08:06,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8702 states to 8702 states and 39438 transitions. [2020-04-18 03:08:06,335 INFO L78 Accepts]: Start accepts. Automaton has 8702 states and 39438 transitions. Word has length 25 [2020-04-18 03:08:06,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:06,336 INFO L479 AbstractCegarLoop]: Abstraction has 8702 states and 39438 transitions. [2020-04-18 03:08:06,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:08:06,336 INFO L276 IsEmpty]: Start isEmpty. Operand 8702 states and 39438 transitions. [2020-04-18 03:08:06,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:08:06,338 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:06,339 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:06,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:08:06,541 INFO L427 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]=== [2020-04-18 03:08:06,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:06,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1576190868, now seen corresponding path program 3 times [2020-04-18 03:08:06,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:06,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036489035] [2020-04-18 03:08:06,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:06,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:06,601 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 03:08:06,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036489035] [2020-04-18 03:08:06,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481764090] [2020-04-18 03:08:06,602 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:08:06,674 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-18 03:08:06,674 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:08:06,675 INFO L264 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:08:06,675 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:08:06,761 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 03:08:06,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:08:06,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:08:06,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147037574] [2020-04-18 03:08:06,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:08:06,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:06,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:08:06,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:08:06,763 INFO L87 Difference]: Start difference. First operand 8702 states and 39438 transitions. Second operand 16 states. [2020-04-18 03:08:07,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:07,588 INFO L93 Difference]: Finished difference Result 28297 states and 108461 transitions. [2020-04-18 03:08:07,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:08:07,589 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-04-18 03:08:07,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:07,647 INFO L225 Difference]: With dead ends: 28297 [2020-04-18 03:08:07,647 INFO L226 Difference]: Without dead ends: 28277 [2020-04-18 03:08:07,647 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:08:07,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28277 states. [2020-04-18 03:08:08,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28277 to 8596. [2020-04-18 03:08:08,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8596 states. [2020-04-18 03:08:08,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 38978 transitions. [2020-04-18 03:08:08,201 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 38978 transitions. Word has length 25 [2020-04-18 03:08:08,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:08,201 INFO L479 AbstractCegarLoop]: Abstraction has 8596 states and 38978 transitions. [2020-04-18 03:08:08,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:08:08,201 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 38978 transitions. [2020-04-18 03:08:08,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:08:08,204 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:08,204 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:08,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:08:08,405 INFO L427 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]=== [2020-04-18 03:08:08,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:08,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1673729315, now seen corresponding path program 4 times [2020-04-18 03:08:08,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:08,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793512363] [2020-04-18 03:08:08,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:08,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:08,490 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 03:08:08,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793512363] [2020-04-18 03:08:08,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042295997] [2020-04-18 03:08:08,491 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:08:08,564 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 03:08:08,564 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:08:08,564 INFO L264 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:08:08,565 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:08:08,651 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 03:08:08,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:08:08,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:08:08,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194391265] [2020-04-18 03:08:08,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:08:08,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:08,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:08:08,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:08:08,653 INFO L87 Difference]: Start difference. First operand 8596 states and 38978 transitions. Second operand 16 states. [2020-04-18 03:08:09,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:09,657 INFO L93 Difference]: Finished difference Result 28565 states and 109596 transitions. [2020-04-18 03:08:09,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:08:09,657 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-04-18 03:08:09,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:09,724 INFO L225 Difference]: With dead ends: 28565 [2020-04-18 03:08:09,724 INFO L226 Difference]: Without dead ends: 28538 [2020-04-18 03:08:09,725 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:08:09,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28538 states. [2020-04-18 03:08:10,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28538 to 8563. [2020-04-18 03:08:10,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8563 states. [2020-04-18 03:08:10,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8563 states to 8563 states and 38809 transitions. [2020-04-18 03:08:10,122 INFO L78 Accepts]: Start accepts. Automaton has 8563 states and 38809 transitions. Word has length 25 [2020-04-18 03:08:10,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:10,123 INFO L479 AbstractCegarLoop]: Abstraction has 8563 states and 38809 transitions. [2020-04-18 03:08:10,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:08:10,123 INFO L276 IsEmpty]: Start isEmpty. Operand 8563 states and 38809 transitions. [2020-04-18 03:08:10,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:08:10,126 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:10,126 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:10,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:08:10,327 INFO L427 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]=== [2020-04-18 03:08:10,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:10,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1673708886, now seen corresponding path program 4 times [2020-04-18 03:08:10,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:10,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107973421] [2020-04-18 03:08:10,328 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:10,384 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 03:08:10,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107973421] [2020-04-18 03:08:10,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916901312] [2020-04-18 03:08:10,385 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:08:10,459 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 03:08:10,460 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:08:10,460 INFO L264 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:08:10,461 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:08:10,554 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 03:08:10,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:08:10,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:08:10,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155184589] [2020-04-18 03:08:10,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:08:10,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:10,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:08:10,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:08:10,556 INFO L87 Difference]: Start difference. First operand 8563 states and 38809 transitions. Second operand 16 states. [2020-04-18 03:08:11,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:11,521 INFO L93 Difference]: Finished difference Result 28213 states and 108237 transitions. [2020-04-18 03:08:11,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:08:11,521 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-04-18 03:08:11,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:11,582 INFO L225 Difference]: With dead ends: 28213 [2020-04-18 03:08:11,582 INFO L226 Difference]: Without dead ends: 28186 [2020-04-18 03:08:11,583 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:08:11,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28186 states. [2020-04-18 03:08:11,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28186 to 8421. [2020-04-18 03:08:11,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8421 states. [2020-04-18 03:08:11,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8421 states to 8421 states and 38146 transitions. [2020-04-18 03:08:11,960 INFO L78 Accepts]: Start accepts. Automaton has 8421 states and 38146 transitions. Word has length 25 [2020-04-18 03:08:11,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:11,961 INFO L479 AbstractCegarLoop]: Abstraction has 8421 states and 38146 transitions. [2020-04-18 03:08:11,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:08:11,961 INFO L276 IsEmpty]: Start isEmpty. Operand 8421 states and 38146 transitions. [2020-04-18 03:08:11,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:08:11,964 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:11,964 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:12,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:08:12,165 INFO L427 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]=== [2020-04-18 03:08:12,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:12,165 INFO L82 PathProgramCache]: Analyzing trace with hash -857609261, now seen corresponding path program 5 times [2020-04-18 03:08:12,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:12,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824577080] [2020-04-18 03:08:12,166 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:12,236 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 03:08:12,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824577080] [2020-04-18 03:08:12,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:08:12,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 03:08:12,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031258594] [2020-04-18 03:08:12,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 03:08:12,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:12,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 03:08:12,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-04-18 03:08:12,239 INFO L87 Difference]: Start difference. First operand 8421 states and 38146 transitions. Second operand 9 states. [2020-04-18 03:08:13,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:13,185 INFO L93 Difference]: Finished difference Result 28226 states and 108274 transitions. [2020-04-18 03:08:13,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:08:13,186 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-04-18 03:08:13,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:13,252 INFO L225 Difference]: With dead ends: 28226 [2020-04-18 03:08:13,252 INFO L226 Difference]: Without dead ends: 28206 [2020-04-18 03:08:13,253 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-04-18 03:08:13,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28206 states. [2020-04-18 03:08:13,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28206 to 8277. [2020-04-18 03:08:13,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8277 states. [2020-04-18 03:08:13,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8277 states to 8277 states and 37487 transitions. [2020-04-18 03:08:13,642 INFO L78 Accepts]: Start accepts. Automaton has 8277 states and 37487 transitions. Word has length 25 [2020-04-18 03:08:13,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:13,642 INFO L479 AbstractCegarLoop]: Abstraction has 8277 states and 37487 transitions. [2020-04-18 03:08:13,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 03:08:13,642 INFO L276 IsEmpty]: Start isEmpty. Operand 8277 states and 37487 transitions. [2020-04-18 03:08:13,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:08:13,646 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:13,646 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:13,646 INFO L427 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]=== [2020-04-18 03:08:13,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:13,647 INFO L82 PathProgramCache]: Analyzing trace with hash -857622932, now seen corresponding path program 5 times [2020-04-18 03:08:13,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:13,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409381680] [2020-04-18 03:08:13,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:13,706 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 03:08:13,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409381680] [2020-04-18 03:08:13,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:08:13,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 03:08:13,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648805636] [2020-04-18 03:08:13,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 03:08:13,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:13,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 03:08:13,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-04-18 03:08:13,709 INFO L87 Difference]: Start difference. First operand 8277 states and 37487 transitions. Second operand 9 states. [2020-04-18 03:08:14,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:14,476 INFO L93 Difference]: Finished difference Result 27801 states and 106552 transitions. [2020-04-18 03:08:14,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:08:14,476 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-04-18 03:08:14,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:14,532 INFO L225 Difference]: With dead ends: 27801 [2020-04-18 03:08:14,533 INFO L226 Difference]: Without dead ends: 27781 [2020-04-18 03:08:14,533 INFO L678 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 [2020-04-18 03:08:14,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27781 states. [2020-04-18 03:08:14,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27781 to 8127. [2020-04-18 03:08:14,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8127 states. [2020-04-18 03:08:14,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8127 states to 8127 states and 36806 transitions. [2020-04-18 03:08:14,897 INFO L78 Accepts]: Start accepts. Automaton has 8127 states and 36806 transitions. Word has length 25 [2020-04-18 03:08:14,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:14,897 INFO L479 AbstractCegarLoop]: Abstraction has 8127 states and 36806 transitions. [2020-04-18 03:08:14,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 03:08:14,897 INFO L276 IsEmpty]: Start isEmpty. Operand 8127 states and 36806 transitions. [2020-04-18 03:08:14,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:08:14,900 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:14,900 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:14,900 INFO L427 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]=== [2020-04-18 03:08:14,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:14,900 INFO L82 PathProgramCache]: Analyzing trace with hash -864096941, now seen corresponding path program 6 times [2020-04-18 03:08:14,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:14,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478100724] [2020-04-18 03:08:14,900 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:14,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:14,976 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 03:08:14,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478100724] [2020-04-18 03:08:14,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:08:14,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 03:08:14,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902598100] [2020-04-18 03:08:14,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 03:08:14,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:14,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 03:08:14,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-04-18 03:08:14,978 INFO L87 Difference]: Start difference. First operand 8127 states and 36806 transitions. Second operand 9 states. [2020-04-18 03:08:15,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:15,748 INFO L93 Difference]: Finished difference Result 27548 states and 105447 transitions. [2020-04-18 03:08:15,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:08:15,749 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-04-18 03:08:15,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:15,804 INFO L225 Difference]: With dead ends: 27548 [2020-04-18 03:08:15,804 INFO L226 Difference]: Without dead ends: 27521 [2020-04-18 03:08:15,805 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-04-18 03:08:15,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27521 states. [2020-04-18 03:08:16,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27521 to 7841. [2020-04-18 03:08:16,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7841 states. [2020-04-18 03:08:16,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7841 states to 7841 states and 35578 transitions. [2020-04-18 03:08:16,161 INFO L78 Accepts]: Start accepts. Automaton has 7841 states and 35578 transitions. Word has length 25 [2020-04-18 03:08:16,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:16,161 INFO L479 AbstractCegarLoop]: Abstraction has 7841 states and 35578 transitions. [2020-04-18 03:08:16,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 03:08:16,161 INFO L276 IsEmpty]: Start isEmpty. Operand 7841 states and 35578 transitions. [2020-04-18 03:08:16,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:08:16,164 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:16,164 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:16,164 INFO L427 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]=== [2020-04-18 03:08:16,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:16,164 INFO L82 PathProgramCache]: Analyzing trace with hash -864117370, now seen corresponding path program 5 times [2020-04-18 03:08:16,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:16,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448060146] [2020-04-18 03:08:16,165 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:16,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:16,226 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 03:08:16,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448060146] [2020-04-18 03:08:16,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:08:16,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 03:08:16,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579196670] [2020-04-18 03:08:16,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 03:08:16,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:16,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 03:08:16,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-04-18 03:08:16,227 INFO L87 Difference]: Start difference. First operand 7841 states and 35578 transitions. Second operand 9 states. [2020-04-18 03:08:16,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:16,986 INFO L93 Difference]: Finished difference Result 27167 states and 103966 transitions. [2020-04-18 03:08:16,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:08:16,987 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-04-18 03:08:16,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:17,041 INFO L225 Difference]: With dead ends: 27167 [2020-04-18 03:08:17,042 INFO L226 Difference]: Without dead ends: 27147 [2020-04-18 03:08:17,042 INFO L678 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 [2020-04-18 03:08:17,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27147 states. [2020-04-18 03:08:17,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27147 to 7743. [2020-04-18 03:08:17,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7743 states. [2020-04-18 03:08:17,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7743 states to 7743 states and 35142 transitions. [2020-04-18 03:08:17,511 INFO L78 Accepts]: Start accepts. Automaton has 7743 states and 35142 transitions. Word has length 25 [2020-04-18 03:08:17,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:17,511 INFO L479 AbstractCegarLoop]: Abstraction has 7743 states and 35142 transitions. [2020-04-18 03:08:17,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 03:08:17,511 INFO L276 IsEmpty]: Start isEmpty. Operand 7743 states and 35142 transitions. [2020-04-18 03:08:17,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:08:17,515 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:17,515 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:17,515 INFO L427 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]=== [2020-04-18 03:08:17,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:17,515 INFO L82 PathProgramCache]: Analyzing trace with hash -877234772, now seen corresponding path program 6 times [2020-04-18 03:08:17,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:17,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743105159] [2020-04-18 03:08:17,516 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:17,582 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 03:08:17,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743105159] [2020-04-18 03:08:17,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:08:17,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 03:08:17,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541311266] [2020-04-18 03:08:17,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 03:08:17,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:17,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 03:08:17,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-04-18 03:08:17,583 INFO L87 Difference]: Start difference. First operand 7743 states and 35142 transitions. Second operand 9 states. [2020-04-18 03:08:18,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:18,380 INFO L93 Difference]: Finished difference Result 26955 states and 103085 transitions. [2020-04-18 03:08:18,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:08:18,381 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-04-18 03:08:18,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:18,434 INFO L225 Difference]: With dead ends: 26955 [2020-04-18 03:08:18,434 INFO L226 Difference]: Without dead ends: 26928 [2020-04-18 03:08:18,434 INFO L678 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 [2020-04-18 03:08:18,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26928 states. [2020-04-18 03:08:18,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26928 to 7532. [2020-04-18 03:08:18,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7532 states. [2020-04-18 03:08:18,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7532 states to 7532 states and 34256 transitions. [2020-04-18 03:08:18,779 INFO L78 Accepts]: Start accepts. Automaton has 7532 states and 34256 transitions. Word has length 25 [2020-04-18 03:08:18,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:18,780 INFO L479 AbstractCegarLoop]: Abstraction has 7532 states and 34256 transitions. [2020-04-18 03:08:18,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 03:08:18,780 INFO L276 IsEmpty]: Start isEmpty. Operand 7532 states and 34256 transitions. [2020-04-18 03:08:18,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:08:18,783 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:18,783 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:18,783 INFO L427 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]=== [2020-04-18 03:08:18,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:18,783 INFO L82 PathProgramCache]: Analyzing trace with hash -877241530, now seen corresponding path program 6 times [2020-04-18 03:08:18,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:18,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085865563] [2020-04-18 03:08:18,783 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:18,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:18,860 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 03:08:18,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085865563] [2020-04-18 03:08:18,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:08:18,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 03:08:18,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604541466] [2020-04-18 03:08:18,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 03:08:18,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:18,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 03:08:18,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-04-18 03:08:18,862 INFO L87 Difference]: Start difference. First operand 7532 states and 34256 transitions. Second operand 9 states. [2020-04-18 03:08:19,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:19,745 INFO L93 Difference]: Finished difference Result 26632 states and 101828 transitions. [2020-04-18 03:08:19,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:08:19,745 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-04-18 03:08:19,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:19,798 INFO L225 Difference]: With dead ends: 26632 [2020-04-18 03:08:19,798 INFO L226 Difference]: Without dead ends: 26605 [2020-04-18 03:08:19,798 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-04-18 03:08:19,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26605 states. [2020-04-18 03:08:20,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26605 to 7269. [2020-04-18 03:08:20,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7269 states. [2020-04-18 03:08:20,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7269 states to 7269 states and 33154 transitions. [2020-04-18 03:08:20,133 INFO L78 Accepts]: Start accepts. Automaton has 7269 states and 33154 transitions. Word has length 25 [2020-04-18 03:08:20,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:20,133 INFO L479 AbstractCegarLoop]: Abstraction has 7269 states and 33154 transitions. [2020-04-18 03:08:20,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 03:08:20,133 INFO L276 IsEmpty]: Start isEmpty. Operand 7269 states and 33154 transitions. [2020-04-18 03:08:20,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:08:20,136 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:20,136 INFO L425 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:20,136 INFO L427 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]=== [2020-04-18 03:08:20,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:20,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1311164244, now seen corresponding path program 1 times [2020-04-18 03:08:20,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:20,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425559285] [2020-04-18 03:08:20,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:20,200 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-04-18 03:08:20,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425559285] [2020-04-18 03:08:20,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:08:20,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 03:08:20,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828867842] [2020-04-18 03:08:20,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 03:08:20,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:20,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 03:08:20,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 03:08:20,202 INFO L87 Difference]: Start difference. First operand 7269 states and 33154 transitions. Second operand 5 states. [2020-04-18 03:08:20,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:20,368 INFO L93 Difference]: Finished difference Result 11919 states and 51979 transitions. [2020-04-18 03:08:20,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 03:08:20,369 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-04-18 03:08:20,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:20,396 INFO L225 Difference]: With dead ends: 11919 [2020-04-18 03:08:20,396 INFO L226 Difference]: Without dead ends: 11887 [2020-04-18 03:08:20,396 INFO L678 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 [2020-04-18 03:08:20,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11887 states. [2020-04-18 03:08:20,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11887 to 8560. [2020-04-18 03:08:20,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8560 states. [2020-04-18 03:08:20,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8560 states to 8560 states and 38495 transitions. [2020-04-18 03:08:20,635 INFO L78 Accepts]: Start accepts. Automaton has 8560 states and 38495 transitions. Word has length 25 [2020-04-18 03:08:20,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:20,635 INFO L479 AbstractCegarLoop]: Abstraction has 8560 states and 38495 transitions. [2020-04-18 03:08:20,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 03:08:20,635 INFO L276 IsEmpty]: Start isEmpty. Operand 8560 states and 38495 transitions. [2020-04-18 03:08:20,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-04-18 03:08:20,639 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:20,639 INFO L425 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:20,639 INFO L427 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]=== [2020-04-18 03:08:20,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:20,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1986416772, now seen corresponding path program 1 times [2020-04-18 03:08:20,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:20,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547601253] [2020-04-18 03:08:20,639 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:20,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 03:08:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 03:08:20,657 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 03:08:20,657 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 03:08:20,657 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-04-18 03:08:20,658 WARN L363 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-18 03:08:20,658 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-04-18 03:08:20,672 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,673 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,673 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,673 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,673 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,673 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,673 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,674 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,674 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,674 WARN L315 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,674 WARN L315 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,674 WARN L315 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,674 WARN L315 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,674 WARN L315 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,675 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,675 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,675 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,675 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,675 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,675 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,675 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,676 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,676 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,676 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,676 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,676 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,676 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,676 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,677 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,677 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,677 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,677 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,677 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,677 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,677 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,678 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,678 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,678 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,678 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,678 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,678 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,678 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,679 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,679 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,679 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,679 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,679 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,679 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,680 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,680 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,680 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,680 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,680 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,680 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,680 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,681 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,681 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,681 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,681 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,681 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,681 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,681 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,682 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,682 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,682 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,682 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,682 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,682 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,682 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,682 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,683 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,683 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,683 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,683 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,683 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,683 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,683 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,684 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,684 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,684 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,684 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,684 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,684 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,684 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,685 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,685 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,685 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,685 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,685 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,685 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,685 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,686 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,686 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,686 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,686 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,686 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,686 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,687 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,687 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,687 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,687 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,687 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,687 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,688 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,688 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,688 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,688 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,703 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,704 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,704 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,704 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,704 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,706 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,706 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,706 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,706 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,706 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,707 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,707 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,707 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,708 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,708 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,709 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,709 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,709 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,709 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,709 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,712 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,712 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,712 WARN L315 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,712 WARN L315 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,712 WARN L315 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,713 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,713 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,714 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,714 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,714 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,714 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,715 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,715 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,716 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,716 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,716 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,716 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,717 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,717 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,717 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,718 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,718 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,718 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,719 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,719 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,720 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,720 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,720 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,720 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,721 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,721 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,721 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,722 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,722 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,722 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,723 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,723 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,723 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,723 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,724 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,724 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:20,725 INFO L251 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-04-18 03:08:20,725 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 03:08:20,725 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 03:08:20,726 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 03:08:20,726 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 03:08:20,726 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 03:08:20,726 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 03:08:20,726 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 03:08:20,726 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 03:08:20,728 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 156 places, 138 transitions, 396 flow [2020-04-18 03:08:20,728 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 156 places, 138 transitions, 396 flow [2020-04-18 03:08:20,744 INFO L129 PetriNetUnfolder]: 9/173 cut-off events. [2020-04-18 03:08:20,745 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-04-18 03:08:20,746 INFO L80 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 173 events. 9/173 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 284 event pairs, 0 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 208. Up to 14 conditions per place. [2020-04-18 03:08:20,751 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 156 places, 138 transitions, 396 flow [2020-04-18 03:08:20,766 INFO L129 PetriNetUnfolder]: 9/173 cut-off events. [2020-04-18 03:08:20,766 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-04-18 03:08:20,767 INFO L80 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 173 events. 9/173 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 284 event pairs, 0 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 208. Up to 14 conditions per place. [2020-04-18 03:08:20,772 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2832 [2020-04-18 03:08:20,772 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 03:08:22,579 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2020-04-18 03:08:22,859 WARN L192 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-04-18 03:08:22,944 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3678 [2020-04-18 03:08:22,944 INFO L214 etLargeBlockEncoding]: Total number of compositions: 113 [2020-04-18 03:08:22,944 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 45 transitions, 210 flow [2020-04-18 03:08:24,371 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 18584 states. [2020-04-18 03:08:24,371 INFO L276 IsEmpty]: Start isEmpty. Operand 18584 states. [2020-04-18 03:08:24,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-04-18 03:08:24,372 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:24,372 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-04-18 03:08:24,372 INFO L427 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]=== [2020-04-18 03:08:24,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:24,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1298891, now seen corresponding path program 1 times [2020-04-18 03:08:24,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:24,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400232206] [2020-04-18 03:08:24,373 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:24,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:08:24,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400232206] [2020-04-18 03:08:24,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:08:24,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 03:08:24,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616340264] [2020-04-18 03:08:24,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 03:08:24,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:24,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 03:08:24,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 03:08:24,383 INFO L87 Difference]: Start difference. First operand 18584 states. Second operand 3 states. [2020-04-18 03:08:24,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:24,522 INFO L93 Difference]: Finished difference Result 17885 states and 92755 transitions. [2020-04-18 03:08:24,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 03:08:24,523 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-04-18 03:08:24,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:24,571 INFO L225 Difference]: With dead ends: 17885 [2020-04-18 03:08:24,571 INFO L226 Difference]: Without dead ends: 16791 [2020-04-18 03:08:24,572 INFO L678 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 [2020-04-18 03:08:25,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16791 states. [2020-04-18 03:08:25,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16791 to 16791. [2020-04-18 03:08:25,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16791 states. [2020-04-18 03:08:25,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16791 states to 16791 states and 86558 transitions. [2020-04-18 03:08:25,329 INFO L78 Accepts]: Start accepts. Automaton has 16791 states and 86558 transitions. Word has length 3 [2020-04-18 03:08:25,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:25,329 INFO L479 AbstractCegarLoop]: Abstraction has 16791 states and 86558 transitions. [2020-04-18 03:08:25,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 03:08:25,329 INFO L276 IsEmpty]: Start isEmpty. Operand 16791 states and 86558 transitions. [2020-04-18 03:08:25,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 03:08:25,330 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:25,330 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:25,330 INFO L427 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]=== [2020-04-18 03:08:25,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:25,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1091574945, now seen corresponding path program 1 times [2020-04-18 03:08:25,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:25,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475469907] [2020-04-18 03:08:25,331 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:25,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:25,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:08:25,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475469907] [2020-04-18 03:08:25,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:08:25,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 03:08:25,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317717649] [2020-04-18 03:08:25,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 03:08:25,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:25,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 03:08:25,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 03:08:25,362 INFO L87 Difference]: Start difference. First operand 16791 states and 86558 transitions. Second operand 5 states. [2020-04-18 03:08:26,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:26,967 INFO L93 Difference]: Finished difference Result 30985 states and 150574 transitions. [2020-04-18 03:08:26,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 03:08:26,968 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-04-18 03:08:26,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:27,068 INFO L225 Difference]: With dead ends: 30985 [2020-04-18 03:08:27,068 INFO L226 Difference]: Without dead ends: 30977 [2020-04-18 03:08:27,069 INFO L678 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 [2020-04-18 03:08:27,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30977 states. [2020-04-18 03:08:27,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30977 to 19868. [2020-04-18 03:08:27,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19868 states. [2020-04-18 03:08:28,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19868 states to 19868 states and 103363 transitions. [2020-04-18 03:08:28,060 INFO L78 Accepts]: Start accepts. Automaton has 19868 states and 103363 transitions. Word has length 9 [2020-04-18 03:08:28,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:28,060 INFO L479 AbstractCegarLoop]: Abstraction has 19868 states and 103363 transitions. [2020-04-18 03:08:28,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 03:08:28,060 INFO L276 IsEmpty]: Start isEmpty. Operand 19868 states and 103363 transitions. [2020-04-18 03:08:28,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 03:08:28,060 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:28,060 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:28,061 INFO L427 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]=== [2020-04-18 03:08:28,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:28,061 INFO L82 PathProgramCache]: Analyzing trace with hash -231509072, now seen corresponding path program 1 times [2020-04-18 03:08:28,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:28,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9173528] [2020-04-18 03:08:28,061 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:28,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:08:28,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9173528] [2020-04-18 03:08:28,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:08:28,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 03:08:28,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015315488] [2020-04-18 03:08:28,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 03:08:28,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:28,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 03:08:28,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 03:08:28,086 INFO L87 Difference]: Start difference. First operand 19868 states and 103363 transitions. Second operand 5 states. [2020-04-18 03:08:28,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:28,341 INFO L93 Difference]: Finished difference Result 36296 states and 178836 transitions. [2020-04-18 03:08:28,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 03:08:28,341 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-18 03:08:28,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:28,437 INFO L225 Difference]: With dead ends: 36296 [2020-04-18 03:08:28,437 INFO L226 Difference]: Without dead ends: 36280 [2020-04-18 03:08:28,437 INFO L678 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 [2020-04-18 03:08:29,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36280 states. [2020-04-18 03:08:29,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36280 to 23806. [2020-04-18 03:08:29,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23806 states. [2020-04-18 03:08:30,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23806 states to 23806 states and 125455 transitions. [2020-04-18 03:08:30,050 INFO L78 Accepts]: Start accepts. Automaton has 23806 states and 125455 transitions. Word has length 13 [2020-04-18 03:08:30,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:30,051 INFO L479 AbstractCegarLoop]: Abstraction has 23806 states and 125455 transitions. [2020-04-18 03:08:30,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 03:08:30,051 INFO L276 IsEmpty]: Start isEmpty. Operand 23806 states and 125455 transitions. [2020-04-18 03:08:30,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 03:08:30,051 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:30,051 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:30,051 INFO L427 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]=== [2020-04-18 03:08:30,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:30,052 INFO L82 PathProgramCache]: Analyzing trace with hash -588793474, now seen corresponding path program 1 times [2020-04-18 03:08:30,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:30,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703148718] [2020-04-18 03:08:30,052 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:30,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:30,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:08:30,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703148718] [2020-04-18 03:08:30,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868131472] [2020-04-18 03:08:30,094 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:08:30,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:30,177 INFO L264 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2020-04-18 03:08:30,178 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:08:30,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:08:30,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:08:30,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-04-18 03:08:30,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518583910] [2020-04-18 03:08:30,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 03:08:30,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:30,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 03:08:30,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-04-18 03:08:30,230 INFO L87 Difference]: Start difference. First operand 23806 states and 125455 transitions. Second operand 12 states. [2020-04-18 03:08:30,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:30,813 INFO L93 Difference]: Finished difference Result 56720 states and 262685 transitions. [2020-04-18 03:08:30,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:08:30,814 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-04-18 03:08:30,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:30,965 INFO L225 Difference]: With dead ends: 56720 [2020-04-18 03:08:30,966 INFO L226 Difference]: Without dead ends: 56704 [2020-04-18 03:08:30,966 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-04-18 03:08:31,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56704 states. [2020-04-18 03:08:32,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56704 to 23629. [2020-04-18 03:08:32,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23629 states. [2020-04-18 03:08:32,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23629 states to 23629 states and 124418 transitions. [2020-04-18 03:08:32,352 INFO L78 Accepts]: Start accepts. Automaton has 23629 states and 124418 transitions. Word has length 15 [2020-04-18 03:08:32,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:32,352 INFO L479 AbstractCegarLoop]: Abstraction has 23629 states and 124418 transitions. [2020-04-18 03:08:32,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 03:08:32,353 INFO L276 IsEmpty]: Start isEmpty. Operand 23629 states and 124418 transitions. [2020-04-18 03:08:32,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 03:08:32,353 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:32,353 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:32,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:08:32,554 INFO L427 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]=== [2020-04-18 03:08:32,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:32,555 INFO L82 PathProgramCache]: Analyzing trace with hash 858081470, now seen corresponding path program 2 times [2020-04-18 03:08:32,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:32,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965275961] [2020-04-18 03:08:32,556 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:32,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:08:32,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965275961] [2020-04-18 03:08:32,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:08:32,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 03:08:32,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574831949] [2020-04-18 03:08:32,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 03:08:32,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:32,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 03:08:32,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 03:08:32,593 INFO L87 Difference]: Start difference. First operand 23629 states and 124418 transitions. Second operand 7 states. [2020-04-18 03:08:34,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:34,889 INFO L93 Difference]: Finished difference Result 58078 states and 269185 transitions. [2020-04-18 03:08:34,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:08:34,889 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-04-18 03:08:34,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:35,080 INFO L225 Difference]: With dead ends: 58078 [2020-04-18 03:08:35,080 INFO L226 Difference]: Without dead ends: 58061 [2020-04-18 03:08:35,080 INFO L678 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 [2020-04-18 03:08:35,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58061 states. [2020-04-18 03:08:36,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58061 to 23109. [2020-04-18 03:08:36,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23109 states. [2020-04-18 03:08:36,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23109 states to 23109 states and 121651 transitions. [2020-04-18 03:08:36,476 INFO L78 Accepts]: Start accepts. Automaton has 23109 states and 121651 transitions. Word has length 15 [2020-04-18 03:08:36,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:36,476 INFO L479 AbstractCegarLoop]: Abstraction has 23109 states and 121651 transitions. [2020-04-18 03:08:36,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 03:08:36,476 INFO L276 IsEmpty]: Start isEmpty. Operand 23109 states and 121651 transitions. [2020-04-18 03:08:36,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 03:08:36,477 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:36,477 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:36,477 INFO L427 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]=== [2020-04-18 03:08:36,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:36,477 INFO L82 PathProgramCache]: Analyzing trace with hash 704376303, now seen corresponding path program 1 times [2020-04-18 03:08:36,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:36,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262989143] [2020-04-18 03:08:36,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:36,501 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 03:08:36,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262989143] [2020-04-18 03:08:36,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:08:36,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 03:08:36,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870806297] [2020-04-18 03:08:36,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 03:08:36,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:36,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 03:08:36,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 03:08:36,503 INFO L87 Difference]: Start difference. First operand 23109 states and 121651 transitions. Second operand 5 states. [2020-04-18 03:08:36,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:36,797 INFO L93 Difference]: Finished difference Result 41885 states and 209629 transitions. [2020-04-18 03:08:36,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 03:08:36,798 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-04-18 03:08:36,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:36,914 INFO L225 Difference]: With dead ends: 41885 [2020-04-18 03:08:36,914 INFO L226 Difference]: Without dead ends: 41856 [2020-04-18 03:08:36,914 INFO L678 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 [2020-04-18 03:08:37,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41856 states. [2020-04-18 03:08:38,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41856 to 28237. [2020-04-18 03:08:38,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28237 states. [2020-04-18 03:08:38,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28237 states to 28237 states and 150261 transitions. [2020-04-18 03:08:38,658 INFO L78 Accepts]: Start accepts. Automaton has 28237 states and 150261 transitions. Word has length 17 [2020-04-18 03:08:38,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:38,658 INFO L479 AbstractCegarLoop]: Abstraction has 28237 states and 150261 transitions. [2020-04-18 03:08:38,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 03:08:38,658 INFO L276 IsEmpty]: Start isEmpty. Operand 28237 states and 150261 transitions. [2020-04-18 03:08:38,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 03:08:38,659 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:38,659 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:38,659 INFO L427 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]=== [2020-04-18 03:08:38,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:38,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1918672061, now seen corresponding path program 1 times [2020-04-18 03:08:38,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:38,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277347848] [2020-04-18 03:08:38,660 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:38,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:38,698 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 03:08:38,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277347848] [2020-04-18 03:08:38,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684106605] [2020-04-18 03:08:38,699 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:08:38,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:38,786 INFO L264 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 7 conjunts are in the unsatisfiable core [2020-04-18 03:08:38,786 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:08:38,843 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 03:08:38,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:08:38,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-04-18 03:08:38,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560633825] [2020-04-18 03:08:38,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 03:08:38,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:38,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 03:08:38,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-04-18 03:08:38,844 INFO L87 Difference]: Start difference. First operand 28237 states and 150261 transitions. Second operand 12 states. [2020-04-18 03:08:39,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:39,434 INFO L93 Difference]: Finished difference Result 66831 states and 314874 transitions. [2020-04-18 03:08:39,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:08:39,435 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-04-18 03:08:39,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:39,616 INFO L225 Difference]: With dead ends: 66831 [2020-04-18 03:08:39,616 INFO L226 Difference]: Without dead ends: 66807 [2020-04-18 03:08:39,617 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-04-18 03:08:40,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66807 states. [2020-04-18 03:08:41,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66807 to 28673. [2020-04-18 03:08:41,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28673 states. [2020-04-18 03:08:41,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28673 states to 28673 states and 152375 transitions. [2020-04-18 03:08:41,244 INFO L78 Accepts]: Start accepts. Automaton has 28673 states and 152375 transitions. Word has length 19 [2020-04-18 03:08:41,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:41,244 INFO L479 AbstractCegarLoop]: Abstraction has 28673 states and 152375 transitions. [2020-04-18 03:08:41,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 03:08:41,244 INFO L276 IsEmpty]: Start isEmpty. Operand 28673 states and 152375 transitions. [2020-04-18 03:08:41,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 03:08:41,245 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:41,245 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:41,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:08:41,448 INFO L427 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]=== [2020-04-18 03:08:41,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:41,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1064014108, now seen corresponding path program 1 times [2020-04-18 03:08:41,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:41,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588572834] [2020-04-18 03:08:41,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:41,486 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:08:41,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588572834] [2020-04-18 03:08:41,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321408058] [2020-04-18 03:08:41,487 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:08:42,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:42,091 INFO L264 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 7 conjunts are in the unsatisfiable core [2020-04-18 03:08:42,091 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:08:42,138 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:08:42,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:08:42,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-04-18 03:08:42,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974946340] [2020-04-18 03:08:42,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 03:08:42,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:42,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 03:08:42,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-04-18 03:08:42,140 INFO L87 Difference]: Start difference. First operand 28673 states and 152375 transitions. Second operand 12 states. [2020-04-18 03:08:42,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:42,784 INFO L93 Difference]: Finished difference Result 69484 states and 328264 transitions. [2020-04-18 03:08:42,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:08:42,785 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-04-18 03:08:42,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:42,978 INFO L225 Difference]: With dead ends: 69484 [2020-04-18 03:08:42,978 INFO L226 Difference]: Without dead ends: 69451 [2020-04-18 03:08:42,978 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-04-18 03:08:43,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69451 states. [2020-04-18 03:08:44,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69451 to 28873. [2020-04-18 03:08:44,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28873 states. [2020-04-18 03:08:44,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28873 states to 28873 states and 153454 transitions. [2020-04-18 03:08:44,639 INFO L78 Accepts]: Start accepts. Automaton has 28873 states and 153454 transitions. Word has length 19 [2020-04-18 03:08:44,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:44,639 INFO L479 AbstractCegarLoop]: Abstraction has 28873 states and 153454 transitions. [2020-04-18 03:08:44,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 03:08:44,640 INFO L276 IsEmpty]: Start isEmpty. Operand 28873 states and 153454 transitions. [2020-04-18 03:08:44,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 03:08:44,640 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:44,640 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:44,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:08:44,841 INFO L427 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]=== [2020-04-18 03:08:44,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:44,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1699177508, now seen corresponding path program 2 times [2020-04-18 03:08:44,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:44,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531881481] [2020-04-18 03:08:44,842 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:44,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:44,878 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 03:08:44,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531881481] [2020-04-18 03:08:44,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:08:44,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 03:08:44,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243586469] [2020-04-18 03:08:44,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 03:08:44,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:44,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 03:08:44,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 03:08:44,880 INFO L87 Difference]: Start difference. First operand 28873 states and 153454 transitions. Second operand 7 states. [2020-04-18 03:08:45,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:45,480 INFO L93 Difference]: Finished difference Result 70510 states and 333491 transitions. [2020-04-18 03:08:45,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:08:45,480 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-04-18 03:08:45,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:46,257 INFO L225 Difference]: With dead ends: 70510 [2020-04-18 03:08:46,257 INFO L226 Difference]: Without dead ends: 70477 [2020-04-18 03:08:46,257 INFO L678 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 [2020-04-18 03:08:47,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70477 states. [2020-04-18 03:08:47,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70477 to 28942. [2020-04-18 03:08:47,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28942 states. [2020-04-18 03:08:47,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28942 states to 28942 states and 153921 transitions. [2020-04-18 03:08:47,877 INFO L78 Accepts]: Start accepts. Automaton has 28942 states and 153921 transitions. Word has length 19 [2020-04-18 03:08:47,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:47,877 INFO L479 AbstractCegarLoop]: Abstraction has 28942 states and 153921 transitions. [2020-04-18 03:08:47,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 03:08:47,877 INFO L276 IsEmpty]: Start isEmpty. Operand 28942 states and 153921 transitions. [2020-04-18 03:08:47,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 03:08:47,878 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:47,878 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:47,878 INFO L427 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]=== [2020-04-18 03:08:47,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:47,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1699205315, now seen corresponding path program 2 times [2020-04-18 03:08:47,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:47,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438595502] [2020-04-18 03:08:47,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:47,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:47,916 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 03:08:47,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438595502] [2020-04-18 03:08:47,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:08:47,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 03:08:47,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370837920] [2020-04-18 03:08:47,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 03:08:47,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:47,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 03:08:47,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 03:08:47,918 INFO L87 Difference]: Start difference. First operand 28942 states and 153921 transitions. Second operand 7 states. [2020-04-18 03:08:48,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:48,507 INFO L93 Difference]: Finished difference Result 70096 states and 331298 transitions. [2020-04-18 03:08:48,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:08:48,507 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-04-18 03:08:48,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:48,701 INFO L225 Difference]: With dead ends: 70096 [2020-04-18 03:08:48,701 INFO L226 Difference]: Without dead ends: 70063 [2020-04-18 03:08:48,702 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-04-18 03:08:50,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70063 states. [2020-04-18 03:08:50,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70063 to 29094. [2020-04-18 03:08:50,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29094 states. [2020-04-18 03:08:50,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29094 states to 29094 states and 154883 transitions. [2020-04-18 03:08:50,872 INFO L78 Accepts]: Start accepts. Automaton has 29094 states and 154883 transitions. Word has length 19 [2020-04-18 03:08:50,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:50,873 INFO L479 AbstractCegarLoop]: Abstraction has 29094 states and 154883 transitions. [2020-04-18 03:08:50,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 03:08:50,873 INFO L276 IsEmpty]: Start isEmpty. Operand 29094 states and 154883 transitions. [2020-04-18 03:08:50,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 03:08:50,874 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:50,874 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:50,874 INFO L427 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]=== [2020-04-18 03:08:50,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:50,874 INFO L82 PathProgramCache]: Analyzing trace with hash -228866966, now seen corresponding path program 1 times [2020-04-18 03:08:50,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:50,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463033925] [2020-04-18 03:08:50,875 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:50,930 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:08:50,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463033925] [2020-04-18 03:08:50,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212949136] [2020-04-18 03:08:50,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:08:51,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:51,017 INFO L264 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:08:51,017 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:08:51,108 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:08:51,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:08:51,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:08:51,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53116977] [2020-04-18 03:08:51,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:08:51,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:51,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:08:51,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:08:51,109 INFO L87 Difference]: Start difference. First operand 29094 states and 154883 transitions. Second operand 16 states. [2020-04-18 03:08:52,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:52,353 INFO L93 Difference]: Finished difference Result 100731 states and 448596 transitions. [2020-04-18 03:08:52,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:08:52,354 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-04-18 03:08:52,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:52,627 INFO L225 Difference]: With dead ends: 100731 [2020-04-18 03:08:52,627 INFO L226 Difference]: Without dead ends: 100715 [2020-04-18 03:08:52,627 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:08:54,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100715 states. [2020-04-18 03:08:55,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100715 to 28719. [2020-04-18 03:08:55,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28719 states. [2020-04-18 03:08:55,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28719 states to 28719 states and 152760 transitions. [2020-04-18 03:08:55,320 INFO L78 Accepts]: Start accepts. Automaton has 28719 states and 152760 transitions. Word has length 21 [2020-04-18 03:08:55,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:55,320 INFO L479 AbstractCegarLoop]: Abstraction has 28719 states and 152760 transitions. [2020-04-18 03:08:55,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:08:55,320 INFO L276 IsEmpty]: Start isEmpty. Operand 28719 states and 152760 transitions. [2020-04-18 03:08:55,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 03:08:55,321 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:55,321 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:55,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:08:55,522 INFO L427 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]=== [2020-04-18 03:08:55,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:55,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1302908714, now seen corresponding path program 2 times [2020-04-18 03:08:55,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:55,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173651360] [2020-04-18 03:08:55,523 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:55,579 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 03:08:55,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173651360] [2020-04-18 03:08:55,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059283452] [2020-04-18 03:08:55,580 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:08:55,665 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 03:08:55,665 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:08:55,666 INFO L264 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:08:55,667 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:08:55,748 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 03:08:55,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:08:55,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:08:55,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818002477] [2020-04-18 03:08:55,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:08:55,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:55,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:08:55,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:08:55,749 INFO L87 Difference]: Start difference. First operand 28719 states and 152760 transitions. Second operand 16 states. [2020-04-18 03:08:57,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:57,023 INFO L93 Difference]: Finished difference Result 99876 states and 444348 transitions. [2020-04-18 03:08:57,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:08:57,023 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-04-18 03:08:57,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:57,317 INFO L225 Difference]: With dead ends: 99876 [2020-04-18 03:08:57,317 INFO L226 Difference]: Without dead ends: 99855 [2020-04-18 03:08:57,318 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:08:58,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99855 states. [2020-04-18 03:08:59,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99855 to 28343. [2020-04-18 03:08:59,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28343 states. [2020-04-18 03:08:59,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28343 states to 28343 states and 150639 transitions. [2020-04-18 03:08:59,841 INFO L78 Accepts]: Start accepts. Automaton has 28343 states and 150639 transitions. Word has length 21 [2020-04-18 03:08:59,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:59,841 INFO L479 AbstractCegarLoop]: Abstraction has 28343 states and 150639 transitions. [2020-04-18 03:08:59,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:08:59,841 INFO L276 IsEmpty]: Start isEmpty. Operand 28343 states and 150639 transitions. [2020-04-18 03:08:59,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 03:08:59,842 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:59,842 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:09:00,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:09:00,043 INFO L427 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]=== [2020-04-18 03:09:00,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:09:00,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1149181014, now seen corresponding path program 3 times [2020-04-18 03:09:00,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:09:00,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189690829] [2020-04-18 03:09:00,044 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:09:00,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:00,102 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:09:00,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189690829] [2020-04-18 03:09:00,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539713381] [2020-04-18 03:09:00,103 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:09:00,189 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-18 03:09:00,189 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:09:00,189 INFO L264 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:09:00,190 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:09:00,284 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:09:00,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:09:00,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:09:00,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282271665] [2020-04-18 03:09:00,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:09:00,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:09:00,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:09:00,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:09:00,285 INFO L87 Difference]: Start difference. First operand 28343 states and 150639 transitions. Second operand 16 states. [2020-04-18 03:09:02,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:09:02,080 INFO L93 Difference]: Finished difference Result 100071 states and 445291 transitions. [2020-04-18 03:09:02,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:09:02,081 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-04-18 03:09:02,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:09:02,365 INFO L225 Difference]: With dead ends: 100071 [2020-04-18 03:09:02,365 INFO L226 Difference]: Without dead ends: 100055 [2020-04-18 03:09:02,366 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:09:03,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100055 states. [2020-04-18 03:09:04,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100055 to 27654. [2020-04-18 03:09:04,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27654 states. [2020-04-18 03:09:04,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27654 states to 27654 states and 147080 transitions. [2020-04-18 03:09:04,403 INFO L78 Accepts]: Start accepts. Automaton has 27654 states and 147080 transitions. Word has length 21 [2020-04-18 03:09:04,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:09:04,403 INFO L479 AbstractCegarLoop]: Abstraction has 27654 states and 147080 transitions. [2020-04-18 03:09:04,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:09:04,403 INFO L276 IsEmpty]: Start isEmpty. Operand 27654 states and 147080 transitions. [2020-04-18 03:09:04,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 03:09:04,404 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:09:04,404 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:09:04,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:09:04,606 INFO L427 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]=== [2020-04-18 03:09:04,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:09:04,607 INFO L82 PathProgramCache]: Analyzing trace with hash 315341610, now seen corresponding path program 4 times [2020-04-18 03:09:04,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:09:04,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345659591] [2020-04-18 03:09:04,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:09:04,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:04,661 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:09:04,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345659591] [2020-04-18 03:09:04,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775108143] [2020-04-18 03:09:04,662 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:09:04,746 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 03:09:04,746 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:09:04,747 INFO L264 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:09:04,748 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:09:04,857 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:09:04,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:09:04,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:09:04,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276474899] [2020-04-18 03:09:04,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:09:04,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:09:04,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:09:04,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:09:04,859 INFO L87 Difference]: Start difference. First operand 27654 states and 147080 transitions. Second operand 16 states. [2020-04-18 03:09:06,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:09:06,279 INFO L93 Difference]: Finished difference Result 99523 states and 442763 transitions. [2020-04-18 03:09:06,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:09:06,279 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-04-18 03:09:06,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:09:06,549 INFO L225 Difference]: With dead ends: 99523 [2020-04-18 03:09:06,549 INFO L226 Difference]: Without dead ends: 99502 [2020-04-18 03:09:06,550 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:09:07,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99502 states. [2020-04-18 03:09:11,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99502 to 27278. [2020-04-18 03:09:11,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27278 states. [2020-04-18 03:09:11,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27278 states to 27278 states and 144959 transitions. [2020-04-18 03:09:11,415 INFO L78 Accepts]: Start accepts. Automaton has 27278 states and 144959 transitions. Word has length 21 [2020-04-18 03:09:11,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:09:11,415 INFO L479 AbstractCegarLoop]: Abstraction has 27278 states and 144959 transitions. [2020-04-18 03:09:11,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:09:11,415 INFO L276 IsEmpty]: Start isEmpty. Operand 27278 states and 144959 transitions. [2020-04-18 03:09:11,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 03:09:11,416 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:09:11,416 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:09:11,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:09:11,618 INFO L427 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]=== [2020-04-18 03:09:11,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:09:11,618 INFO L82 PathProgramCache]: Analyzing trace with hash -822012438, now seen corresponding path program 5 times [2020-04-18 03:09:11,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:09:11,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342279675] [2020-04-18 03:09:11,619 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:09:11,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:11,671 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 03:09:11,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342279675] [2020-04-18 03:09:11,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:09:11,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 03:09:11,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016752193] [2020-04-18 03:09:11,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 03:09:11,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:09:11,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 03:09:11,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-04-18 03:09:11,673 INFO L87 Difference]: Start difference. First operand 27278 states and 144959 transitions. Second operand 9 states. [2020-04-18 03:09:12,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:09:12,910 INFO L93 Difference]: Finished difference Result 99710 states and 443686 transitions. [2020-04-18 03:09:12,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:09:12,910 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-04-18 03:09:12,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:09:13,182 INFO L225 Difference]: With dead ends: 99710 [2020-04-18 03:09:13,182 INFO L226 Difference]: Without dead ends: 99694 [2020-04-18 03:09:13,182 INFO L678 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 [2020-04-18 03:09:14,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99694 states. [2020-04-18 03:09:15,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99694 to 26597. [2020-04-18 03:09:15,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26597 states. [2020-04-18 03:09:15,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26597 states to 26597 states and 141420 transitions. [2020-04-18 03:09:15,677 INFO L78 Accepts]: Start accepts. Automaton has 26597 states and 141420 transitions. Word has length 21 [2020-04-18 03:09:15,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:09:15,677 INFO L479 AbstractCegarLoop]: Abstraction has 26597 states and 141420 transitions. [2020-04-18 03:09:15,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 03:09:15,678 INFO L276 IsEmpty]: Start isEmpty. Operand 26597 states and 141420 transitions. [2020-04-18 03:09:15,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 03:09:15,678 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:09:15,678 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:09:15,679 INFO L427 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]=== [2020-04-18 03:09:15,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:09:15,679 INFO L82 PathProgramCache]: Analyzing trace with hash -848707158, now seen corresponding path program 6 times [2020-04-18 03:09:15,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:09:15,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752123861] [2020-04-18 03:09:15,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:09:15,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:15,740 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 03:09:15,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752123861] [2020-04-18 03:09:15,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:09:15,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 03:09:15,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781781640] [2020-04-18 03:09:15,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 03:09:15,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:09:15,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 03:09:15,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-04-18 03:09:15,742 INFO L87 Difference]: Start difference. First operand 26597 states and 141420 transitions. Second operand 9 states. [2020-04-18 03:09:16,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:09:16,938 INFO L93 Difference]: Finished difference Result 98863 states and 439458 transitions. [2020-04-18 03:09:16,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:09:16,939 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-04-18 03:09:16,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:09:17,207 INFO L225 Difference]: With dead ends: 98863 [2020-04-18 03:09:17,207 INFO L226 Difference]: Without dead ends: 98841 [2020-04-18 03:09:17,208 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-04-18 03:09:18,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98841 states. [2020-04-18 03:09:19,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98841 to 25744. [2020-04-18 03:09:19,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25744 states. [2020-04-18 03:09:19,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25744 states to 25744 states and 137181 transitions. [2020-04-18 03:09:19,805 INFO L78 Accepts]: Start accepts. Automaton has 25744 states and 137181 transitions. Word has length 21 [2020-04-18 03:09:19,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:09:19,805 INFO L479 AbstractCegarLoop]: Abstraction has 25744 states and 137181 transitions. [2020-04-18 03:09:19,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 03:09:19,806 INFO L276 IsEmpty]: Start isEmpty. Operand 25744 states and 137181 transitions. [2020-04-18 03:09:19,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 03:09:19,807 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:09:19,807 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:09:19,807 INFO L427 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]=== [2020-04-18 03:09:19,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:09:19,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1818695965, now seen corresponding path program 1 times [2020-04-18 03:09:19,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:09:19,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305311341] [2020-04-18 03:09:19,807 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:09:19,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:19,840 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 03:09:19,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305311341] [2020-04-18 03:09:19,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:09:19,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 03:09:19,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918356390] [2020-04-18 03:09:19,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 03:09:19,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:09:19,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 03:09:19,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 03:09:19,841 INFO L87 Difference]: Start difference. First operand 25744 states and 137181 transitions. Second operand 5 states. [2020-04-18 03:09:20,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:09:20,154 INFO L93 Difference]: Finished difference Result 46463 states and 236107 transitions. [2020-04-18 03:09:20,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 03:09:20,154 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-04-18 03:09:20,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:09:20,283 INFO L225 Difference]: With dead ends: 46463 [2020-04-18 03:09:20,284 INFO L226 Difference]: Without dead ends: 46417 [2020-04-18 03:09:20,284 INFO L678 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 [2020-04-18 03:09:20,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46417 states. [2020-04-18 03:09:21,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46417 to 31960. [2020-04-18 03:09:21,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31960 states. [2020-04-18 03:09:22,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31960 states to 31960 states and 171209 transitions. [2020-04-18 03:09:22,226 INFO L78 Accepts]: Start accepts. Automaton has 31960 states and 171209 transitions. Word has length 21 [2020-04-18 03:09:22,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:09:22,226 INFO L479 AbstractCegarLoop]: Abstraction has 31960 states and 171209 transitions. [2020-04-18 03:09:22,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 03:09:22,227 INFO L276 IsEmpty]: Start isEmpty. Operand 31960 states and 171209 transitions. [2020-04-18 03:09:22,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 03:09:22,228 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:09:22,228 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:09:22,228 INFO L427 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]=== [2020-04-18 03:09:22,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:09:22,228 INFO L82 PathProgramCache]: Analyzing trace with hash 605532395, now seen corresponding path program 1 times [2020-04-18 03:09:22,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:09:22,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893065083] [2020-04-18 03:09:22,229 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:09:22,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:22,269 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 03:09:22,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893065083] [2020-04-18 03:09:22,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488722981] [2020-04-18 03:09:22,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:09:22,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:22,358 INFO L264 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core [2020-04-18 03:09:22,358 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:09:22,417 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 03:09:22,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:09:22,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-04-18 03:09:22,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154106631] [2020-04-18 03:09:22,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 03:09:22,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:09:22,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 03:09:22,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-04-18 03:09:22,419 INFO L87 Difference]: Start difference. First operand 31960 states and 171209 transitions. Second operand 12 states. [2020-04-18 03:09:23,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:09:23,170 INFO L93 Difference]: Finished difference Result 75380 states and 361389 transitions. [2020-04-18 03:09:23,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:09:23,170 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-04-18 03:09:23,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:09:23,385 INFO L225 Difference]: With dead ends: 75380 [2020-04-18 03:09:23,385 INFO L226 Difference]: Without dead ends: 75344 [2020-04-18 03:09:23,385 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-04-18 03:09:24,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75344 states. [2020-04-18 03:09:25,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75344 to 32974. [2020-04-18 03:09:25,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32974 states. [2020-04-18 03:09:28,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32974 states to 32974 states and 176363 transitions. [2020-04-18 03:09:28,356 INFO L78 Accepts]: Start accepts. Automaton has 32974 states and 176363 transitions. Word has length 23 [2020-04-18 03:09:28,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:09:28,356 INFO L479 AbstractCegarLoop]: Abstraction has 32974 states and 176363 transitions. [2020-04-18 03:09:28,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 03:09:28,357 INFO L276 IsEmpty]: Start isEmpty. Operand 32974 states and 176363 transitions. [2020-04-18 03:09:28,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 03:09:28,358 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:09:28,358 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:09:28,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:09:28,559 INFO L427 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]=== [2020-04-18 03:09:28,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:09:28,560 INFO L82 PathProgramCache]: Analyzing trace with hash 768040394, now seen corresponding path program 1 times [2020-04-18 03:09:28,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:09:28,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580085737] [2020-04-18 03:09:28,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:09:28,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:28,602 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 03:09:28,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580085737] [2020-04-18 03:09:28,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863957482] [2020-04-18 03:09:28,603 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:09:28,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:28,727 INFO L264 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core [2020-04-18 03:09:28,728 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:09:28,801 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 03:09:28,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:09:28,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-04-18 03:09:28,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650799951] [2020-04-18 03:09:28,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 03:09:28,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:09:28,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 03:09:28,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-04-18 03:09:28,803 INFO L87 Difference]: Start difference. First operand 32974 states and 176363 transitions. Second operand 12 states. [2020-04-18 03:09:29,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:09:29,480 INFO L93 Difference]: Finished difference Result 79487 states and 381757 transitions. [2020-04-18 03:09:29,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:09:29,480 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-04-18 03:09:29,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:09:29,728 INFO L225 Difference]: With dead ends: 79487 [2020-04-18 03:09:29,728 INFO L226 Difference]: Without dead ends: 79445 [2020-04-18 03:09:29,729 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-04-18 03:09:30,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79445 states. [2020-04-18 03:09:31,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79445 to 33981. [2020-04-18 03:09:31,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33981 states. [2020-04-18 03:09:32,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33981 states to 33981 states and 181710 transitions. [2020-04-18 03:09:32,188 INFO L78 Accepts]: Start accepts. Automaton has 33981 states and 181710 transitions. Word has length 23 [2020-04-18 03:09:32,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:09:32,189 INFO L479 AbstractCegarLoop]: Abstraction has 33981 states and 181710 transitions. [2020-04-18 03:09:32,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 03:09:32,189 INFO L276 IsEmpty]: Start isEmpty. Operand 33981 states and 181710 transitions. [2020-04-18 03:09:32,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 03:09:32,190 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:09:32,191 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:09:32,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:09:32,392 INFO L427 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]=== [2020-04-18 03:09:32,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:09:32,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1041867770, now seen corresponding path program 1 times [2020-04-18 03:09:32,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:09:32,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402479076] [2020-04-18 03:09:32,393 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:09:32,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:32,435 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 03:09:32,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402479076] [2020-04-18 03:09:32,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590305797] [2020-04-18 03:09:32,436 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:09:32,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:32,523 INFO L264 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core [2020-04-18 03:09:32,525 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:09:32,573 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 03:09:32,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:09:32,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-04-18 03:09:32,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659477155] [2020-04-18 03:09:32,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 03:09:32,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:09:32,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 03:09:32,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-04-18 03:09:32,575 INFO L87 Difference]: Start difference. First operand 33981 states and 181710 transitions. Second operand 12 states. [2020-04-18 03:09:33,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:09:33,275 INFO L93 Difference]: Finished difference Result 82728 states and 398553 transitions. [2020-04-18 03:09:33,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:09:33,275 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-04-18 03:09:33,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:09:33,514 INFO L225 Difference]: With dead ends: 82728 [2020-04-18 03:09:33,514 INFO L226 Difference]: Without dead ends: 82673 [2020-04-18 03:09:33,514 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-04-18 03:09:34,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82673 states. [2020-04-18 03:09:36,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82673 to 34821. [2020-04-18 03:09:36,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34821 states. [2020-04-18 03:09:36,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34821 states to 34821 states and 186422 transitions. [2020-04-18 03:09:36,153 INFO L78 Accepts]: Start accepts. Automaton has 34821 states and 186422 transitions. Word has length 23 [2020-04-18 03:09:36,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:09:36,153 INFO L479 AbstractCegarLoop]: Abstraction has 34821 states and 186422 transitions. [2020-04-18 03:09:36,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 03:09:36,153 INFO L276 IsEmpty]: Start isEmpty. Operand 34821 states and 186422 transitions. [2020-04-18 03:09:36,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 03:09:36,155 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:09:36,155 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:09:36,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:09:36,356 INFO L427 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]=== [2020-04-18 03:09:36,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:09:36,357 INFO L82 PathProgramCache]: Analyzing trace with hash -284839030, now seen corresponding path program 2 times [2020-04-18 03:09:36,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:09:36,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009509729] [2020-04-18 03:09:36,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:09:36,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:36,397 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 03:09:36,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009509729] [2020-04-18 03:09:36,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:09:36,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 03:09:36,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040494786] [2020-04-18 03:09:36,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 03:09:36,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:09:36,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 03:09:36,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 03:09:36,398 INFO L87 Difference]: Start difference. First operand 34821 states and 186422 transitions. Second operand 7 states. [2020-04-18 03:09:37,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:09:37,064 INFO L93 Difference]: Finished difference Result 83507 states and 402693 transitions. [2020-04-18 03:09:37,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:09:37,064 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-04-18 03:09:37,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:09:37,312 INFO L225 Difference]: With dead ends: 83507 [2020-04-18 03:09:37,312 INFO L226 Difference]: Without dead ends: 83452 [2020-04-18 03:09:37,312 INFO L678 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 [2020-04-18 03:09:38,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83452 states. [2020-04-18 03:09:41,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83452 to 35694. [2020-04-18 03:09:41,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35694 states. [2020-04-18 03:09:42,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35694 states to 35694 states and 191145 transitions. [2020-04-18 03:09:42,060 INFO L78 Accepts]: Start accepts. Automaton has 35694 states and 191145 transitions. Word has length 23 [2020-04-18 03:09:42,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:09:42,061 INFO L479 AbstractCegarLoop]: Abstraction has 35694 states and 191145 transitions. [2020-04-18 03:09:42,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 03:09:42,061 INFO L276 IsEmpty]: Start isEmpty. Operand 35694 states and 191145 transitions. [2020-04-18 03:09:42,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 03:09:42,063 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:09:42,063 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:09:42,063 INFO L427 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]=== [2020-04-18 03:09:42,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:09:42,063 INFO L82 PathProgramCache]: Analyzing trace with hash -284850438, now seen corresponding path program 2 times [2020-04-18 03:09:42,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:09:42,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012190224] [2020-04-18 03:09:42,063 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:09:42,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:42,104 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 03:09:42,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012190224] [2020-04-18 03:09:42,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:09:42,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 03:09:42,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059907532] [2020-04-18 03:09:42,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 03:09:42,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:09:42,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 03:09:42,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 03:09:42,106 INFO L87 Difference]: Start difference. First operand 35694 states and 191145 transitions. Second operand 7 states. [2020-04-18 03:09:42,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:09:42,813 INFO L93 Difference]: Finished difference Result 83523 states and 402462 transitions. [2020-04-18 03:09:42,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:09:42,814 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-04-18 03:09:42,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:09:43,054 INFO L225 Difference]: With dead ends: 83523 [2020-04-18 03:09:43,055 INFO L226 Difference]: Without dead ends: 83468 [2020-04-18 03:09:43,055 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-04-18 03:09:43,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83468 states. [2020-04-18 03:09:45,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83468 to 36306. [2020-04-18 03:09:45,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36306 states. [2020-04-18 03:09:45,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36306 states to 36306 states and 194552 transitions. [2020-04-18 03:09:45,615 INFO L78 Accepts]: Start accepts. Automaton has 36306 states and 194552 transitions. Word has length 23 [2020-04-18 03:09:45,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:09:45,616 INFO L479 AbstractCegarLoop]: Abstraction has 36306 states and 194552 transitions. [2020-04-18 03:09:45,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 03:09:45,616 INFO L276 IsEmpty]: Start isEmpty. Operand 36306 states and 194552 transitions. [2020-04-18 03:09:45,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 03:09:45,618 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:09:45,618 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:09:45,618 INFO L427 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]=== [2020-04-18 03:09:45,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:09:45,618 INFO L82 PathProgramCache]: Analyzing trace with hash -284866837, now seen corresponding path program 2 times [2020-04-18 03:09:45,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:09:45,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461994255] [2020-04-18 03:09:45,619 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:09:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:45,663 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 03:09:45,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461994255] [2020-04-18 03:09:45,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:09:45,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 03:09:45,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992534726] [2020-04-18 03:09:45,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 03:09:45,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:09:45,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 03:09:45,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 03:09:45,664 INFO L87 Difference]: Start difference. First operand 36306 states and 194552 transitions. Second operand 7 states. [2020-04-18 03:09:46,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:09:46,326 INFO L93 Difference]: Finished difference Result 83918 states and 404136 transitions. [2020-04-18 03:09:46,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:09:46,327 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-04-18 03:09:46,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:09:46,565 INFO L225 Difference]: With dead ends: 83918 [2020-04-18 03:09:46,566 INFO L226 Difference]: Without dead ends: 83863 [2020-04-18 03:09:46,566 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-04-18 03:09:47,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83863 states. [2020-04-18 03:09:49,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83863 to 37062. [2020-04-18 03:09:49,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37062 states. [2020-04-18 03:09:49,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37062 states to 37062 states and 198528 transitions. [2020-04-18 03:09:49,297 INFO L78 Accepts]: Start accepts. Automaton has 37062 states and 198528 transitions. Word has length 23 [2020-04-18 03:09:49,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:09:49,297 INFO L479 AbstractCegarLoop]: Abstraction has 37062 states and 198528 transitions. [2020-04-18 03:09:49,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 03:09:49,297 INFO L276 IsEmpty]: Start isEmpty. Operand 37062 states and 198528 transitions. [2020-04-18 03:09:49,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:09:49,300 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:09:49,300 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:09:49,300 INFO L427 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]=== [2020-04-18 03:09:49,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:09:49,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1146013160, now seen corresponding path program 1 times [2020-04-18 03:09:49,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:09:49,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550407936] [2020-04-18 03:09:49,300 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:09:49,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:49,359 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 03:09:49,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550407936] [2020-04-18 03:09:49,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106297931] [2020-04-18 03:09:49,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:09:49,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:49,488 INFO L264 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:09:49,489 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:09:49,610 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 03:09:49,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:09:49,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:09:49,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876433268] [2020-04-18 03:09:49,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:09:49,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:09:49,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:09:49,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:09:49,612 INFO L87 Difference]: Start difference. First operand 37062 states and 198528 transitions. Second operand 16 states. [2020-04-18 03:09:51,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:09:51,144 INFO L93 Difference]: Finished difference Result 122892 states and 561130 transitions. [2020-04-18 03:09:51,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:09:51,144 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-04-18 03:09:51,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:09:51,489 INFO L225 Difference]: With dead ends: 122892 [2020-04-18 03:09:51,489 INFO L226 Difference]: Without dead ends: 122862 [2020-04-18 03:09:51,492 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:09:52,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122862 states. [2020-04-18 03:09:56,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122862 to 36727. [2020-04-18 03:09:56,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36727 states. [2020-04-18 03:09:56,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36727 states to 36727 states and 196466 transitions. [2020-04-18 03:09:56,973 INFO L78 Accepts]: Start accepts. Automaton has 36727 states and 196466 transitions. Word has length 25 [2020-04-18 03:09:56,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:09:56,973 INFO L479 AbstractCegarLoop]: Abstraction has 36727 states and 196466 transitions. [2020-04-18 03:09:56,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:09:56,973 INFO L276 IsEmpty]: Start isEmpty. Operand 36727 states and 196466 transitions. [2020-04-18 03:09:56,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:09:56,975 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:09:56,976 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:09:57,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:09:57,176 INFO L427 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]=== [2020-04-18 03:09:57,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:09:57,177 INFO L82 PathProgramCache]: Analyzing trace with hash -872185784, now seen corresponding path program 1 times [2020-04-18 03:09:57,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:09:57,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610151815] [2020-04-18 03:09:57,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:09:57,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:57,249 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 03:09:57,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610151815] [2020-04-18 03:09:57,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006822933] [2020-04-18 03:09:57,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:09:57,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:57,336 INFO L264 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:09:57,336 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:09:57,416 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 03:09:57,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:09:57,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:09:57,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412858203] [2020-04-18 03:09:57,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:09:57,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:09:57,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:09:57,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:09:57,418 INFO L87 Difference]: Start difference. First operand 36727 states and 196466 transitions. Second operand 16 states. [2020-04-18 03:09:59,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:09:59,643 INFO L93 Difference]: Finished difference Result 121590 states and 554657 transitions. [2020-04-18 03:09:59,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:09:59,643 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-04-18 03:09:59,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:09:59,992 INFO L225 Difference]: With dead ends: 121590 [2020-04-18 03:09:59,992 INFO L226 Difference]: Without dead ends: 121560 [2020-04-18 03:09:59,992 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:10:01,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121560 states. [2020-04-18 03:10:02,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121560 to 36513. [2020-04-18 03:10:02,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36513 states. [2020-04-18 03:10:06,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36513 states to 36513 states and 195090 transitions. [2020-04-18 03:10:06,149 INFO L78 Accepts]: Start accepts. Automaton has 36513 states and 195090 transitions. Word has length 25 [2020-04-18 03:10:06,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:10:06,150 INFO L479 AbstractCegarLoop]: Abstraction has 36513 states and 195090 transitions. [2020-04-18 03:10:06,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:10:06,150 INFO L276 IsEmpty]: Start isEmpty. Operand 36513 states and 195090 transitions. [2020-04-18 03:10:06,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:10:06,153 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:10:06,153 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:10:06,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:10:06,355 INFO L427 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]=== [2020-04-18 03:10:06,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:10:06,356 INFO L82 PathProgramCache]: Analyzing trace with hash 2096074712, now seen corresponding path program 2 times [2020-04-18 03:10:06,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:10:06,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553744548] [2020-04-18 03:10:06,357 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:10:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:10:06,415 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 03:10:06,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553744548] [2020-04-18 03:10:06,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325725998] [2020-04-18 03:10:06,415 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:10:06,502 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 03:10:06,502 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:10:06,503 INFO L264 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:10:06,504 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:10:06,583 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 03:10:06,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:10:06,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:10:06,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817352039] [2020-04-18 03:10:06,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:10:06,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:10:06,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:10:06,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:10:06,585 INFO L87 Difference]: Start difference. First operand 36513 states and 195090 transitions. Second operand 16 states. [2020-04-18 03:10:07,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:10:07,924 INFO L93 Difference]: Finished difference Result 120395 states and 548664 transitions. [2020-04-18 03:10:07,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:10:07,924 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-04-18 03:10:07,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:10:08,241 INFO L225 Difference]: With dead ends: 120395 [2020-04-18 03:10:08,242 INFO L226 Difference]: Without dead ends: 120362 [2020-04-18 03:10:08,242 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:10:09,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120362 states. [2020-04-18 03:10:11,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120362 to 36444. [2020-04-18 03:10:11,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36444 states. [2020-04-18 03:10:11,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36444 states to 36444 states and 194571 transitions. [2020-04-18 03:10:11,192 INFO L78 Accepts]: Start accepts. Automaton has 36444 states and 194571 transitions. Word has length 25 [2020-04-18 03:10:11,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:10:11,192 INFO L479 AbstractCegarLoop]: Abstraction has 36444 states and 194571 transitions. [2020-04-18 03:10:11,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:10:11,192 INFO L276 IsEmpty]: Start isEmpty. Operand 36444 states and 194571 transitions. [2020-04-18 03:10:11,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:10:11,194 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:10:11,194 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:10:11,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:10:11,395 INFO L427 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]=== [2020-04-18 03:10:11,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:10:11,396 INFO L82 PathProgramCache]: Analyzing trace with hash 2096063304, now seen corresponding path program 2 times [2020-04-18 03:10:11,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:10:11,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962999963] [2020-04-18 03:10:11,397 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:10:11,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:10:11,450 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 03:10:11,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962999963] [2020-04-18 03:10:11,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941297349] [2020-04-18 03:10:11,451 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 03:10:11,540 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 03:10:11,540 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:10:11,541 INFO L264 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:10:11,541 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:10:11,620 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 03:10:11,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:10:11,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:10:11,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359902765] [2020-04-18 03:10:11,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:10:11,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:10:11,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:10:11,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:10:11,622 INFO L87 Difference]: Start difference. First operand 36444 states and 194571 transitions. Second operand 16 states. [2020-04-18 03:10:13,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:10:13,036 INFO L93 Difference]: Finished difference Result 119346 states and 543724 transitions. [2020-04-18 03:10:13,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:10:13,036 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-04-18 03:10:13,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:10:14,074 INFO L225 Difference]: With dead ends: 119346 [2020-04-18 03:10:14,074 INFO L226 Difference]: Without dead ends: 119313 [2020-04-18 03:10:14,075 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:10:15,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119313 states. [2020-04-18 03:10:16,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119313 to 36040. [2020-04-18 03:10:16,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36040 states. [2020-04-18 03:10:16,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36040 states to 36040 states and 192287 transitions. [2020-04-18 03:10:16,380 INFO L78 Accepts]: Start accepts. Automaton has 36040 states and 192287 transitions. Word has length 25 [2020-04-18 03:10:16,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:10:16,381 INFO L479 AbstractCegarLoop]: Abstraction has 36040 states and 192287 transitions. [2020-04-18 03:10:16,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:10:16,382 INFO L276 IsEmpty]: Start isEmpty. Operand 36040 states and 192287 transitions. [2020-04-18 03:10:16,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:10:16,384 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:10:16,384 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:10:16,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:10:16,585 INFO L427 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]=== [2020-04-18 03:10:16,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:10:16,586 INFO L82 PathProgramCache]: Analyzing trace with hash 582269272, now seen corresponding path program 3 times [2020-04-18 03:10:16,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:10:16,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673833301] [2020-04-18 03:10:16,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:10:16,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:10:16,644 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 03:10:16,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673833301] [2020-04-18 03:10:16,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264227522] [2020-04-18 03:10:16,645 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:10:16,736 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-04-18 03:10:16,736 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:10:16,737 INFO L264 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:10:16,738 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:10:17,251 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 03:10:17,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:10:17,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:10:17,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246802846] [2020-04-18 03:10:17,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:10:17,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:10:17,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:10:17,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:10:17,253 INFO L87 Difference]: Start difference. First operand 36040 states and 192287 transitions. Second operand 16 states. [2020-04-18 03:10:18,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:10:18,810 INFO L93 Difference]: Finished difference Result 119770 states and 545635 transitions. [2020-04-18 03:10:18,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:10:18,811 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-04-18 03:10:18,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:10:19,124 INFO L225 Difference]: With dead ends: 119770 [2020-04-18 03:10:19,125 INFO L226 Difference]: Without dead ends: 119740 [2020-04-18 03:10:19,125 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:10:20,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119740 states. [2020-04-18 03:10:24,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119740 to 35471. [2020-04-18 03:10:24,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35471 states. [2020-04-18 03:10:24,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35471 states to 35471 states and 189238 transitions. [2020-04-18 03:10:24,393 INFO L78 Accepts]: Start accepts. Automaton has 35471 states and 189238 transitions. Word has length 25 [2020-04-18 03:10:24,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:10:24,393 INFO L479 AbstractCegarLoop]: Abstraction has 35471 states and 189238 transitions. [2020-04-18 03:10:24,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:10:24,393 INFO L276 IsEmpty]: Start isEmpty. Operand 35471 states and 189238 transitions. [2020-04-18 03:10:24,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:10:24,395 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:10:24,395 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:10:24,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:10:24,596 INFO L427 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]=== [2020-04-18 03:10:24,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:10:24,597 INFO L82 PathProgramCache]: Analyzing trace with hash 679178599, now seen corresponding path program 1 times [2020-04-18 03:10:24,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:10:24,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81699870] [2020-04-18 03:10:24,598 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:10:24,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:10:24,666 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:10:24,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81699870] [2020-04-18 03:10:24,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947820306] [2020-04-18 03:10:24,666 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:10:24,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:10:24,761 INFO L264 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:10:24,762 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:10:24,851 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:10:24,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:10:24,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:10:24,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104759435] [2020-04-18 03:10:24,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:10:24,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:10:24,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:10:24,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:10:24,853 INFO L87 Difference]: Start difference. First operand 35471 states and 189238 transitions. Second operand 16 states. [2020-04-18 03:10:26,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:10:26,241 INFO L93 Difference]: Finished difference Result 121131 states and 553230 transitions. [2020-04-18 03:10:26,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:10:26,241 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-04-18 03:10:26,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:10:26,566 INFO L225 Difference]: With dead ends: 121131 [2020-04-18 03:10:26,566 INFO L226 Difference]: Without dead ends: 121101 [2020-04-18 03:10:26,567 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:10:28,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121101 states. [2020-04-18 03:10:29,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121101 to 35374. [2020-04-18 03:10:29,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35374 states. [2020-04-18 03:10:29,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35374 states to 35374 states and 188534 transitions. [2020-04-18 03:10:29,549 INFO L78 Accepts]: Start accepts. Automaton has 35374 states and 188534 transitions. Word has length 25 [2020-04-18 03:10:29,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:10:29,549 INFO L479 AbstractCegarLoop]: Abstraction has 35374 states and 188534 transitions. [2020-04-18 03:10:29,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:10:29,549 INFO L276 IsEmpty]: Start isEmpty. Operand 35374 states and 188534 transitions. [2020-04-18 03:10:29,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:10:29,551 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:10:29,551 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:10:29,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:10:29,752 INFO L427 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]=== [2020-04-18 03:10:29,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:10:29,753 INFO L82 PathProgramCache]: Analyzing trace with hash -647539609, now seen corresponding path program 2 times [2020-04-18 03:10:29,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:10:29,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579565914] [2020-04-18 03:10:29,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:10:29,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:10:29,808 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 03:10:29,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579565914] [2020-04-18 03:10:29,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398750053] [2020-04-18 03:10:29,809 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:10:29,895 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 03:10:29,895 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:10:29,896 INFO L264 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:10:29,896 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:10:29,979 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 03:10:29,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:10:29,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:10:29,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762583923] [2020-04-18 03:10:29,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:10:29,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:10:29,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:10:29,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:10:29,981 INFO L87 Difference]: Start difference. First operand 35374 states and 188534 transitions. Second operand 16 states. [2020-04-18 03:10:31,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:10:31,892 INFO L93 Difference]: Finished difference Result 120194 states and 548412 transitions. [2020-04-18 03:10:31,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:10:31,892 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-04-18 03:10:31,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:10:32,212 INFO L225 Difference]: With dead ends: 120194 [2020-04-18 03:10:32,212 INFO L226 Difference]: Without dead ends: 120154 [2020-04-18 03:10:32,213 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:10:33,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120154 states. [2020-04-18 03:10:37,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120154 to 35219. [2020-04-18 03:10:37,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35219 states. [2020-04-18 03:10:37,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35219 states to 35219 states and 187630 transitions. [2020-04-18 03:10:37,459 INFO L78 Accepts]: Start accepts. Automaton has 35219 states and 187630 transitions. Word has length 25 [2020-04-18 03:10:37,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:10:37,459 INFO L479 AbstractCegarLoop]: Abstraction has 35219 states and 187630 transitions. [2020-04-18 03:10:37,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:10:37,459 INFO L276 IsEmpty]: Start isEmpty. Operand 35219 states and 187630 transitions. [2020-04-18 03:10:37,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:10:37,461 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:10:37,461 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:10:37,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:10:37,662 INFO L427 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]=== [2020-04-18 03:10:37,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:10:37,663 INFO L82 PathProgramCache]: Analyzing trace with hash -647556008, now seen corresponding path program 4 times [2020-04-18 03:10:37,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:10:37,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694875115] [2020-04-18 03:10:37,664 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:10:37,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:10:37,732 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 03:10:37,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694875115] [2020-04-18 03:10:37,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535284996] [2020-04-18 03:10:37,733 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:10:37,818 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 03:10:37,819 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:10:37,819 INFO L264 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:10:37,820 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:10:37,913 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 03:10:37,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:10:37,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:10:37,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803600737] [2020-04-18 03:10:37,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:10:37,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:10:37,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:10:37,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:10:37,914 INFO L87 Difference]: Start difference. First operand 35219 states and 187630 transitions. Second operand 16 states. [2020-04-18 03:10:39,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:10:39,274 INFO L93 Difference]: Finished difference Result 118559 states and 539905 transitions. [2020-04-18 03:10:39,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:10:39,275 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-04-18 03:10:39,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:10:39,585 INFO L225 Difference]: With dead ends: 118559 [2020-04-18 03:10:39,585 INFO L226 Difference]: Without dead ends: 118526 [2020-04-18 03:10:39,585 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 Received shutdown request... [2020-04-18 03:10:41,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118526 states. [2020-04-18 03:10:41,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:10:41,577 WARN L544 AbstractCegarLoop]: Verification canceled [2020-04-18 03:10:41,581 WARN L228 ceAbstractionStarter]: Timeout [2020-04-18 03:10:41,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:10:41 BasicIcfg [2020-04-18 03:10:41,581 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 03:10:41,582 INFO L168 Benchmark]: Toolchain (without parser) took 227837.60 ms. Allocated memory was 146.8 MB in the beginning and 3.2 GB in the end (delta: 3.1 GB). Free memory was 103.5 MB in the beginning and 2.1 GB in the end (delta: -2.0 GB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2020-04-18 03:10:41,583 INFO L168 Benchmark]: CDTParser took 1.35 ms. Allocated memory is still 146.8 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 03:10:41,583 INFO L168 Benchmark]: CACSL2BoogieTranslator took 684.78 ms. Allocated memory was 146.8 MB in the beginning and 205.5 MB in the end (delta: 58.7 MB). Free memory was 101.5 MB in the beginning and 162.9 MB in the end (delta: -61.3 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2020-04-18 03:10:41,583 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.13 ms. Allocated memory is still 205.5 MB. Free memory was 162.9 MB in the beginning and 160.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 03:10:41,584 INFO L168 Benchmark]: Boogie Preprocessor took 24.39 ms. Allocated memory is still 205.5 MB. Free memory was 160.9 MB in the beginning and 159.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 03:10:41,584 INFO L168 Benchmark]: RCFGBuilder took 414.30 ms. Allocated memory is still 205.5 MB. Free memory was 159.5 MB in the beginning and 138.8 MB in the end (delta: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2020-04-18 03:10:41,584 INFO L168 Benchmark]: TraceAbstraction took 226615.83 ms. Allocated memory was 205.5 MB in the beginning and 3.2 GB in the end (delta: 3.0 GB). Free memory was 138.8 MB in the beginning and 2.1 GB in the end (delta: -2.0 GB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2020-04-18 03:10:41,586 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.35 ms. Allocated memory is still 146.8 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 684.78 ms. Allocated memory was 146.8 MB in the beginning and 205.5 MB in the end (delta: 58.7 MB). Free memory was 101.5 MB in the beginning and 162.9 MB in the end (delta: -61.3 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 72.13 ms. Allocated memory is still 205.5 MB. Free memory was 162.9 MB in the beginning and 160.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.39 ms. Allocated memory is still 205.5 MB. Free memory was 160.9 MB in the beginning and 159.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 414.30 ms. Allocated memory is still 205.5 MB. Free memory was 159.5 MB in the beginning and 138.8 MB in the end (delta: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 226615.83 ms. Allocated memory was 205.5 MB in the beginning and 3.2 GB in the end (delta: 3.0 GB). Free memory was 138.8 MB in the beginning and 2.1 GB in the end (delta: -2.0 GB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.3s, 61 ProgramPointsBefore, 18 ProgramPointsAfterwards, 58 TransitionsBefore, 12 TransitionsAfterwards, 592 CoEnabledTransitionPairs, 7 FixpointIterations, 21 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 3 ConcurrentYvCompositions, 3 ChoiceCompositions, 304 VarBasedMoverChecksPositive, 3 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 486 CheckedPairsTotal, 51 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 80 ProgramPointsBefore, 31 ProgramPointsAfterwards, 74 TransitionsBefore, 21 TransitionsAfterwards, 920 CoEnabledTransitionPairs, 6 FixpointIterations, 31 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 3 ConcurrentYvCompositions, 4 ChoiceCompositions, 472 VarBasedMoverChecksPositive, 9 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 942 CheckedPairsTotal, 62 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 99 ProgramPointsBefore, 41 ProgramPointsAfterwards, 90 TransitionsBefore, 27 TransitionsAfterwards, 1308 CoEnabledTransitionPairs, 6 FixpointIterations, 39 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 3 ConcurrentYvCompositions, 5 ChoiceCompositions, 673 VarBasedMoverChecksPositive, 16 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1426 CheckedPairsTotal, 74 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.4s, 118 ProgramPointsBefore, 51 ProgramPointsAfterwards, 106 TransitionsBefore, 33 TransitionsAfterwards, 1756 CoEnabledTransitionPairs, 7 FixpointIterations, 47 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 4 ConcurrentYvCompositions, 6 ChoiceCompositions, 840 VarBasedMoverChecksPositive, 18 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2033 CheckedPairsTotal, 86 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.6s, 137 ProgramPointsBefore, 61 ProgramPointsAfterwards, 122 TransitionsBefore, 39 TransitionsAfterwards, 2264 CoEnabledTransitionPairs, 7 FixpointIterations, 61 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 3 ConcurrentYvCompositions, 7 ChoiceCompositions, 1058 VarBasedMoverChecksPositive, 27 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2999 CheckedPairsTotal, 104 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.2s, 156 ProgramPointsBefore, 71 ProgramPointsAfterwards, 138 TransitionsBefore, 45 TransitionsAfterwards, 2832 CoEnabledTransitionPairs, 6 FixpointIterations, 66 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 4 ConcurrentYvCompositions, 8 ChoiceCompositions, 1407 VarBasedMoverChecksPositive, 30 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 3678 CheckedPairsTotal, 113 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 678]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 678). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 55 locations, 1 error locations. Started 6 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 226.2s, OverallIterations: 106, TraceHistogramMax: 6, AutomataDifference: 80.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 15.0s, HoareTripleCheckerStatistics: 4776 SDtfs, 25485 SDslu, 17319 SDs, 0 SdLazy, 32552 SolverSat, 2272 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 25.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2850 GetRequests, 712 SyntacticMatches, 0 SemanticMatches, 2138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14647 ImplicationChecksByTransitivity, 21.8s 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: 105.0s AutomataMinimizationTime, 101 MinimizatonAttempts, 2256009 StatesRemovedByMinimization, 93 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 9.4s InterpolantComputationTime, 3095 NumberOfCodeBlocks, 3067 NumberOfCodeBlocksAsserted, 181 NumberOfCheckSat, 2858 ConstructedInterpolants, 0 QuantifiedInterpolants, 386536 SizeOfPredicates, 256 NumberOfNonLiveVariables, 5509 ConjunctsInSsa, 400 ConjunctsInUnsatCore, 149 InterpolantComputations, 53 PerfectInterpolantSequences, 912/1688 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