/usr/bin/java -Xmx16000000000 -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-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 23:11:42,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 23:11:42,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 23:11:42,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 23:11:42,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 23:11:42,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 23:11:42,370 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 23:11:42,372 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 23:11:42,374 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 23:11:42,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 23:11:42,375 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 23:11:42,377 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 23:11:42,377 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 23:11:42,378 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 23:11:42,379 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 23:11:42,380 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 23:11:42,381 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 23:11:42,382 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 23:11:42,384 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 23:11:42,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 23:11:42,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 23:11:42,389 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 23:11:42,390 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 23:11:42,391 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 23:11:42,394 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-15 23:11:42,398 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 23:11:42,398 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 23:11:42,399 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 23:11:42,400 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 23:11:42,401 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 23:11:42,402 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 23:11:42,402 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 23:11:42,403 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 23:11:42,403 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 23:11:42,404 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 23:11:42,405 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 23:11:42,405 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-SemanticLbe.epf [2020-10-15 23:11:42,444 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 23:11:42,444 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 23:11:42,446 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 23:11:42,446 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 23:11:42,446 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 23:11:42,446 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 23:11:42,446 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 23:11:42,447 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 23:11:42,447 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 23:11:42,447 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 23:11:42,447 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 23:11:42,447 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 23:11:42,448 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 23:11:42,448 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 23:11:42,448 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 23:11:42,448 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 23:11:42,448 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 23:11:42,449 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 23:11:42,449 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 23:11:42,449 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 23:11:42,449 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 23:11:42,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 23:11:42,450 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 23:11:42,450 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 23:11:42,450 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 23:11:42,450 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 23:11:42,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 23:11:42,451 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 23:11:42,451 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 23:11:42,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 23:11:42,774 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 23:11:42,778 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 23:11:42,779 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 23:11:42,780 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 23:11:42,780 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-2.i [2020-10-15 23:11:42,857 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db072fc8e/3270b227c9154056b3225efbbd836468/FLAG5722865a0 [2020-10-15 23:11:43,389 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 23:11:43,390 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-2.i [2020-10-15 23:11:43,405 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db072fc8e/3270b227c9154056b3225efbbd836468/FLAG5722865a0 [2020-10-15 23:11:43,706 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db072fc8e/3270b227c9154056b3225efbbd836468 [2020-10-15 23:11:43,718 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 23:11:43,721 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 23:11:43,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 23:11:43,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 23:11:43,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 23:11:43,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 11:11:43" (1/1) ... [2020-10-15 23:11:43,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@704d088d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:11:43, skipping insertion in model container [2020-10-15 23:11:43,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 11:11:43" (1/1) ... [2020-10-15 23:11:43,742 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 23:11:43,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 23:11:44,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 23:11:44,260 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 23:11:44,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 23:11:44,401 INFO L208 MainTranslator]: Completed translation [2020-10-15 23:11:44,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:11:44 WrapperNode [2020-10-15 23:11:44,401 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 23:11:44,402 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 23:11:44,402 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 23:11:44,403 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 23:11:44,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:11:44" (1/1) ... [2020-10-15 23:11:44,428 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:11:44" (1/1) ... [2020-10-15 23:11:44,452 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 23:11:44,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 23:11:44,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 23:11:44,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 23:11:44,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:11:44" (1/1) ... [2020-10-15 23:11:44,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:11:44" (1/1) ... [2020-10-15 23:11:44,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:11:44" (1/1) ... [2020-10-15 23:11:44,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:11:44" (1/1) ... [2020-10-15 23:11:44,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:11:44" (1/1) ... [2020-10-15 23:11:44,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:11:44" (1/1) ... [2020-10-15 23:11:44,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:11:44" (1/1) ... [2020-10-15 23:11:44,478 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 23:11:44,479 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 23:11:44,479 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 23:11:44,479 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 23:11:44,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:11:44" (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 [2020-10-15 23:11:44,541 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-15 23:11:44,541 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-15 23:11:44,542 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-15 23:11:44,542 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-15 23:11:44,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 23:11:44,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 23:11:44,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 23:11:44,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 23:11:44,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 23:11:44,546 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 23:11:44,922 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 23:11:44,922 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-15 23:11:44,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 11:11:44 BoogieIcfgContainer [2020-10-15 23:11:44,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 23:11:44,926 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 23:11:44,926 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 23:11:44,929 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 23:11:44,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 11:11:43" (1/3) ... [2020-10-15 23:11:44,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74e873e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 11:11:44, skipping insertion in model container [2020-10-15 23:11:44,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:11:44" (2/3) ... [2020-10-15 23:11:44,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74e873e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 11:11:44, skipping insertion in model container [2020-10-15 23:11:44,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 11:11:44" (3/3) ... [2020-10-15 23:11:44,933 INFO L111 eAbstractionObserver]: Analyzing ICFG nondet-loop-bound-2.i [2020-10-15 23:11:44,945 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 23:11:44,945 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 23:11:44,953 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 23:11:44,954 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 23:11:44,981 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:44,982 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:44,982 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:44,982 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:44,983 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:44,983 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:44,984 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:44,984 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:44,985 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:44,985 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:44,985 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:44,985 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:44,986 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:44,986 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:44,986 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:44,986 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:44,987 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:44,990 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:44,991 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:44,991 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:44,991 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:44,991 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:44,998 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:44,999 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:44,999 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:44,999 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:44,999 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:45,000 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:45,016 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-15 23:11:45,037 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 23:11:45,037 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 23:11:45,038 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 23:11:45,038 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 23:11:45,038 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 23:11:45,038 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 23:11:45,038 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 23:11:45,038 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 23:11:45,051 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 23:11:45,054 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 58 transitions, 126 flow [2020-10-15 23:11:45,057 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 58 transitions, 126 flow [2020-10-15 23:11:45,059 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 58 transitions, 126 flow [2020-10-15 23:11:45,102 INFO L129 PetriNetUnfolder]: 4/68 cut-off events. [2020-10-15 23:11:45,102 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-15 23:11:45,113 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. [2020-10-15 23:11:45,117 INFO L117 LiptonReduction]: Number of co-enabled transitions 592 [2020-10-15 23:11:46,499 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-10-15 23:11:46,737 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2020-10-15 23:11:46,811 INFO L132 LiptonReduction]: Checked pairs total: 576 [2020-10-15 23:11:46,812 INFO L134 LiptonReduction]: Total number of compositions: 54 [2020-10-15 23:11:46,819 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 12 transitions, 34 flow [2020-10-15 23:11:46,830 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-15 23:11:46,833 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-15 23:11:46,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-15 23:11:46,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:11:46,840 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-15 23:11:46,840 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 23:11:46,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:11:46,846 INFO L82 PathProgramCache]: Analyzing trace with hash 229686, now seen corresponding path program 1 times [2020-10-15 23:11:46,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:11:46,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712588587] [2020-10-15 23:11:46,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:11:46,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:11:47,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:11:47,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712588587] [2020-10-15 23:11:47,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:11:47,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 23:11:47,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236748427] [2020-10-15 23:11:47,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 23:11:47,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:11:47,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 23:11:47,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 23:11:47,060 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-10-15 23:11:47,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:11:47,101 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2020-10-15 23:11:47,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 23:11:47,103 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-15 23:11:47,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:11:47,115 INFO L225 Difference]: With dead ends: 35 [2020-10-15 23:11:47,115 INFO L226 Difference]: Without dead ends: 31 [2020-10-15 23:11:47,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 23:11:47,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-15 23:11:47,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-15 23:11:47,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-15 23:11:47,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2020-10-15 23:11:47,157 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 51 transitions. Word has length 3 [2020-10-15 23:11:47,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:11:47,157 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 51 transitions. [2020-10-15 23:11:47,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 23:11:47,158 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2020-10-15 23:11:47,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-15 23:11:47,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:11:47,159 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:11:47,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 23:11:47,159 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 23:11:47,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:11:47,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1647647331, now seen corresponding path program 1 times [2020-10-15 23:11:47,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:11:47,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345400040] [2020-10-15 23:11:47,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:11:47,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:11:47,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:11:47,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345400040] [2020-10-15 23:11:47,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:11:47,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 23:11:47,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609208262] [2020-10-15 23:11:47,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 23:11:47,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:11:47,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 23:11:47,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-15 23:11:47,273 INFO L87 Difference]: Start difference. First operand 31 states and 51 transitions. Second operand 4 states. [2020-10-15 23:11:47,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:11:47,324 INFO L93 Difference]: Finished difference Result 26 states and 42 transitions. [2020-10-15 23:11:47,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 23:11:47,326 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-15 23:11:47,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:11:47,327 INFO L225 Difference]: With dead ends: 26 [2020-10-15 23:11:47,327 INFO L226 Difference]: Without dead ends: 24 [2020-10-15 23:11:47,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-15 23:11:47,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-15 23:11:47,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-15 23:11:47,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-15 23:11:47,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 39 transitions. [2020-10-15 23:11:47,333 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 39 transitions. Word has length 7 [2020-10-15 23:11:47,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:11:47,333 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 39 transitions. [2020-10-15 23:11:47,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 23:11:47,333 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 39 transitions. [2020-10-15 23:11:47,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-15 23:11:47,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:11:47,334 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-15 23:11:47,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 23:11:47,335 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 23:11:47,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:11:47,335 INFO L82 PathProgramCache]: Analyzing trace with hash -462538936, now seen corresponding path program 1 times [2020-10-15 23:11:47,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:11:47,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620605790] [2020-10-15 23:11:47,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:11:47,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 23:11:47,360 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 23:11:47,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 23:11:47,374 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 23:11:47,398 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 23:11:47,399 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 23:11:47,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 23:11:47,399 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-15 23:11:47,401 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 23:11:47,401 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-15 23:11:47,409 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,409 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,410 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,410 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,410 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,410 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,410 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,411 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,411 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,411 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,411 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,411 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,411 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,412 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,412 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,412 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,413 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,413 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,413 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,413 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,414 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,414 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,414 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,414 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,415 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,415 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,415 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,415 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,415 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,415 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,416 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,416 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,416 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,416 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,417 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,417 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,417 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,417 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,418 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,419 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,420 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,420 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,420 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,420 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,422 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,423 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,423 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,423 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,423 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,423 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,425 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,425 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,425 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,426 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,426 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,426 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:47,427 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-15 23:11:47,428 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 23:11:47,428 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 23:11:47,428 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 23:11:47,428 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 23:11:47,428 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 23:11:47,428 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 23:11:47,428 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 23:11:47,428 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 23:11:47,431 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 23:11:47,431 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 74 transitions, 172 flow [2020-10-15 23:11:47,431 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 74 transitions, 172 flow [2020-10-15 23:11:47,432 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 80 places, 74 transitions, 172 flow [2020-10-15 23:11:47,453 INFO L129 PetriNetUnfolder]: 5/89 cut-off events. [2020-10-15 23:11:47,453 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-15 23:11:47,455 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. [2020-10-15 23:11:47,457 INFO L117 LiptonReduction]: Number of co-enabled transitions 920 [2020-10-15 23:11:48,919 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-15 23:11:49,060 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-15 23:11:49,064 INFO L132 LiptonReduction]: Checked pairs total: 1122 [2020-10-15 23:11:49,064 INFO L134 LiptonReduction]: Total number of compositions: 66 [2020-10-15 23:11:49,065 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 66 flow [2020-10-15 23:11:49,076 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 224 states. [2020-10-15 23:11:49,077 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states. [2020-10-15 23:11:49,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-15 23:11:49,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:11:49,077 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-15 23:11:49,078 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:11:49,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:11:49,078 INFO L82 PathProgramCache]: Analyzing trace with hash 384194, now seen corresponding path program 1 times [2020-10-15 23:11:49,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:11:49,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791933207] [2020-10-15 23:11:49,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:11:49,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:11:49,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:11:49,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791933207] [2020-10-15 23:11:49,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:11:49,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 23:11:49,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333052420] [2020-10-15 23:11:49,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 23:11:49,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:11:49,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 23:11:49,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 23:11:49,128 INFO L87 Difference]: Start difference. First operand 224 states. Second operand 3 states. [2020-10-15 23:11:49,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:11:49,163 INFO L93 Difference]: Finished difference Result 185 states and 459 transitions. [2020-10-15 23:11:49,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 23:11:49,163 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-15 23:11:49,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:11:49,168 INFO L225 Difference]: With dead ends: 185 [2020-10-15 23:11:49,168 INFO L226 Difference]: Without dead ends: 171 [2020-10-15 23:11:49,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 23:11:49,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-15 23:11:49,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-10-15 23:11:49,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-15 23:11:49,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 418 transitions. [2020-10-15 23:11:49,195 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 418 transitions. Word has length 3 [2020-10-15 23:11:49,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:11:49,195 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 418 transitions. [2020-10-15 23:11:49,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 23:11:49,196 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 418 transitions. [2020-10-15 23:11:49,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 23:11:49,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:11:49,197 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:11:49,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 23:11:49,197 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:11:49,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:11:49,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1694917346, now seen corresponding path program 1 times [2020-10-15 23:11:49,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:11:49,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729576768] [2020-10-15 23:11:49,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:11:49,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:11:49,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:11:49,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729576768] [2020-10-15 23:11:49,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:11:49,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 23:11:49,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798731423] [2020-10-15 23:11:49,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 23:11:49,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:11:49,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 23:11:49,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 23:11:49,260 INFO L87 Difference]: Start difference. First operand 171 states and 418 transitions. Second operand 5 states. [2020-10-15 23:11:49,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:11:49,359 INFO L93 Difference]: Finished difference Result 205 states and 460 transitions. [2020-10-15 23:11:49,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 23:11:49,363 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-15 23:11:49,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:11:49,366 INFO L225 Difference]: With dead ends: 205 [2020-10-15 23:11:49,366 INFO L226 Difference]: Without dead ends: 201 [2020-10-15 23:11:49,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:11:49,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-15 23:11:49,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 162. [2020-10-15 23:11:49,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-15 23:11:49,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 399 transitions. [2020-10-15 23:11:49,387 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 399 transitions. Word has length 9 [2020-10-15 23:11:49,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:11:49,387 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 399 transitions. [2020-10-15 23:11:49,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 23:11:49,388 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 399 transitions. [2020-10-15 23:11:49,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 23:11:49,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:11:49,389 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:11:49,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 23:11:49,389 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:11:49,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:11:49,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1027741454, now seen corresponding path program 1 times [2020-10-15 23:11:49,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:11:49,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108156591] [2020-10-15 23:11:49,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:11:49,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:11:49,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:11:49,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108156591] [2020-10-15 23:11:49,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:11:49,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 23:11:49,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542298290] [2020-10-15 23:11:49,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 23:11:49,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:11:49,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 23:11:49,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 23:11:49,451 INFO L87 Difference]: Start difference. First operand 162 states and 399 transitions. Second operand 5 states. [2020-10-15 23:11:49,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:11:49,562 INFO L93 Difference]: Finished difference Result 189 states and 423 transitions. [2020-10-15 23:11:49,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 23:11:49,564 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-15 23:11:49,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:11:49,566 INFO L225 Difference]: With dead ends: 189 [2020-10-15 23:11:49,566 INFO L226 Difference]: Without dead ends: 185 [2020-10-15 23:11:49,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:11:49,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-15 23:11:49,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 153. [2020-10-15 23:11:49,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-15 23:11:49,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 367 transitions. [2020-10-15 23:11:49,601 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 367 transitions. Word has length 13 [2020-10-15 23:11:49,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:11:49,603 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 367 transitions. [2020-10-15 23:11:49,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 23:11:49,603 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 367 transitions. [2020-10-15 23:11:49,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 23:11:49,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:11:49,607 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:11:49,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 23:11:49,607 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:11:49,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:11:49,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1792799235, now seen corresponding path program 1 times [2020-10-15 23:11:49,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:11:49,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046947851] [2020-10-15 23:11:49,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:11:49,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 23:11:49,633 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 23:11:49,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 23:11:49,646 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 23:11:49,655 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 23:11:49,656 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 23:11:49,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 23:11:49,656 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-15 23:11:49,657 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 23:11:49,658 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-15 23:11:49,667 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,667 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,668 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,668 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,668 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,668 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,668 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,669 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,669 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,669 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,669 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,669 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,669 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,670 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,670 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,670 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,670 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,670 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,670 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,670 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,671 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,671 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,671 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,672 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,672 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,672 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,672 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,672 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,672 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,673 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,673 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,673 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,673 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,673 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,674 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,674 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,674 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,674 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,674 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,674 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,675 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,675 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,675 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,675 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,676 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,676 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,676 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,676 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,676 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,676 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,677 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,677 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,677 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,677 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,678 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,678 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,679 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,679 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,680 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,680 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,680 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,681 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,681 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,682 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,682 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,682 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,683 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,683 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,684 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,684 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,684 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,684 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,686 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,686 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,686 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,686 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,686 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,687 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,688 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,688 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,688 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,688 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,689 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,689 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:49,690 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-15 23:11:49,690 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 23:11:49,690 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 23:11:49,691 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 23:11:49,691 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 23:11:49,691 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 23:11:49,691 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 23:11:49,691 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 23:11:49,691 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 23:11:49,693 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 23:11:49,693 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 90 transitions, 222 flow [2020-10-15 23:11:49,693 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 90 transitions, 222 flow [2020-10-15 23:11:49,694 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 90 transitions, 222 flow [2020-10-15 23:11:49,714 INFO L129 PetriNetUnfolder]: 6/110 cut-off events. [2020-10-15 23:11:49,715 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-15 23:11:49,716 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. [2020-10-15 23:11:49,719 INFO L117 LiptonReduction]: Number of co-enabled transitions 1308 [2020-10-15 23:11:51,094 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-10-15 23:11:51,350 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-10-15 23:11:51,485 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-15 23:11:51,492 INFO L132 LiptonReduction]: Checked pairs total: 1841 [2020-10-15 23:11:51,492 INFO L134 LiptonReduction]: Total number of compositions: 79 [2020-10-15 23:11:51,493 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 27 transitions, 96 flow [2020-10-15 23:11:51,521 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 683 states. [2020-10-15 23:11:51,521 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states. [2020-10-15 23:11:51,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-15 23:11:51,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:11:51,522 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-15 23:11:51,522 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:11:51,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:11:51,523 INFO L82 PathProgramCache]: Analyzing trace with hash 567457, now seen corresponding path program 1 times [2020-10-15 23:11:51,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:11:51,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642887934] [2020-10-15 23:11:51,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:11:51,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:11:51,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:11:51,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642887934] [2020-10-15 23:11:51,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:11:51,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 23:11:51,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489677575] [2020-10-15 23:11:51,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 23:11:51,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:11:51,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 23:11:51,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 23:11:51,559 INFO L87 Difference]: Start difference. First operand 683 states. Second operand 3 states. [2020-10-15 23:11:51,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:11:51,606 INFO L93 Difference]: Finished difference Result 600 states and 1886 transitions. [2020-10-15 23:11:51,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 23:11:51,609 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-15 23:11:51,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:11:51,615 INFO L225 Difference]: With dead ends: 600 [2020-10-15 23:11:51,615 INFO L226 Difference]: Without dead ends: 559 [2020-10-15 23:11:51,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 23:11:51,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-10-15 23:11:51,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2020-10-15 23:11:51,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-15 23:11:51,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1737 transitions. [2020-10-15 23:11:51,692 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1737 transitions. Word has length 3 [2020-10-15 23:11:51,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:11:51,692 INFO L481 AbstractCegarLoop]: Abstraction has 559 states and 1737 transitions. [2020-10-15 23:11:51,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 23:11:51,693 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1737 transitions. [2020-10-15 23:11:51,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 23:11:51,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:11:51,693 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:11:51,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 23:11:51,694 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:11:51,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:11:51,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1052273544, now seen corresponding path program 1 times [2020-10-15 23:11:51,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:11:51,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343527051] [2020-10-15 23:11:51,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:11:51,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:11:51,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:11:51,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343527051] [2020-10-15 23:11:51,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:11:51,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 23:11:51,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147228154] [2020-10-15 23:11:51,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 23:11:51,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:11:51,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 23:11:51,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 23:11:51,771 INFO L87 Difference]: Start difference. First operand 559 states and 1737 transitions. Second operand 5 states. [2020-10-15 23:11:51,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:11:51,876 INFO L93 Difference]: Finished difference Result 817 states and 2317 transitions. [2020-10-15 23:11:51,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 23:11:51,877 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-15 23:11:51,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:11:51,884 INFO L225 Difference]: With dead ends: 817 [2020-10-15 23:11:51,884 INFO L226 Difference]: Without dead ends: 812 [2020-10-15 23:11:51,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:11:51,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-10-15 23:11:51,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 585. [2020-10-15 23:11:51,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-10-15 23:11:51,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1832 transitions. [2020-10-15 23:11:51,912 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1832 transitions. Word has length 9 [2020-10-15 23:11:51,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:11:51,912 INFO L481 AbstractCegarLoop]: Abstraction has 585 states and 1832 transitions. [2020-10-15 23:11:51,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 23:11:51,912 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1832 transitions. [2020-10-15 23:11:51,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 23:11:51,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:11:51,914 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:11:51,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 23:11:51,914 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:11:51,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:11:51,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1096280394, now seen corresponding path program 1 times [2020-10-15 23:11:51,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:11:51,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019684899] [2020-10-15 23:11:51,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:11:51,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:11:51,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:11:51,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019684899] [2020-10-15 23:11:51,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:11:51,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 23:11:51,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171669005] [2020-10-15 23:11:51,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 23:11:51,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:11:51,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 23:11:51,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 23:11:51,962 INFO L87 Difference]: Start difference. First operand 585 states and 1832 transitions. Second operand 5 states. [2020-10-15 23:11:52,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:11:52,057 INFO L93 Difference]: Finished difference Result 843 states and 2406 transitions. [2020-10-15 23:11:52,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 23:11:52,058 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-15 23:11:52,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:11:52,064 INFO L225 Difference]: With dead ends: 843 [2020-10-15 23:11:52,065 INFO L226 Difference]: Without dead ends: 836 [2020-10-15 23:11:52,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:11:52,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-10-15 23:11:52,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 611. [2020-10-15 23:11:52,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-10-15 23:11:52,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1906 transitions. [2020-10-15 23:11:52,095 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1906 transitions. Word has length 13 [2020-10-15 23:11:52,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:11:52,095 INFO L481 AbstractCegarLoop]: Abstraction has 611 states and 1906 transitions. [2020-10-15 23:11:52,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 23:11:52,096 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1906 transitions. [2020-10-15 23:11:52,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 23:11:52,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:11:52,101 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:11:52,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 23:11:52,101 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:11:52,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:11:52,102 INFO L82 PathProgramCache]: Analyzing trace with hash 2044985054, now seen corresponding path program 1 times [2020-10-15 23:11:52,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:11:52,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383385919] [2020-10-15 23:11:52,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:11:52,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:11:52,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:11:52,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383385919] [2020-10-15 23:11:52,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799100034] [2020-10-15 23:11:52,204 INFO L95 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 [2020-10-15 23:11:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:11:52,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 23:11:52,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:11:52,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:11:52,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:11:52,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 23:11:52,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593656444] [2020-10-15 23:11:52,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 23:11:52,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:11:52,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 23:11:52,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-15 23:11:52,386 INFO L87 Difference]: Start difference. First operand 611 states and 1906 transitions. Second operand 12 states. [2020-10-15 23:11:52,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:11:52,698 INFO L93 Difference]: Finished difference Result 1059 states and 2818 transitions. [2020-10-15 23:11:52,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:11:52,699 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-15 23:11:52,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:11:52,706 INFO L225 Difference]: With dead ends: 1059 [2020-10-15 23:11:52,707 INFO L226 Difference]: Without dead ends: 1052 [2020-10-15 23:11:52,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:11:52,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-10-15 23:11:52,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 591. [2020-10-15 23:11:52,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-10-15 23:11:52,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1840 transitions. [2020-10-15 23:11:52,737 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1840 transitions. Word has length 15 [2020-10-15 23:11:52,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:11:52,739 INFO L481 AbstractCegarLoop]: Abstraction has 591 states and 1840 transitions. [2020-10-15 23:11:52,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 23:11:52,740 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1840 transitions. [2020-10-15 23:11:52,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 23:11:52,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:11:52,742 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:11:52,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-15 23:11:52,958 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:11:52,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:11:52,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1258473782, now seen corresponding path program 2 times [2020-10-15 23:11:52,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:11:52,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718511848] [2020-10-15 23:11:52,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:11:52,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:11:53,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:11:53,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718511848] [2020-10-15 23:11:53,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:11:53,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 23:11:53,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907056327] [2020-10-15 23:11:53,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 23:11:53,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:11:53,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 23:11:53,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:11:53,010 INFO L87 Difference]: Start difference. First operand 591 states and 1840 transitions. Second operand 7 states. [2020-10-15 23:11:53,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:11:53,260 INFO L93 Difference]: Finished difference Result 1053 states and 2807 transitions. [2020-10-15 23:11:53,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:11:53,261 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-15 23:11:53,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:11:53,269 INFO L225 Difference]: With dead ends: 1053 [2020-10-15 23:11:53,269 INFO L226 Difference]: Without dead ends: 1045 [2020-10-15 23:11:53,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-15 23:11:53,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-10-15 23:11:53,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 536. [2020-10-15 23:11:53,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-10-15 23:11:53,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1688 transitions. [2020-10-15 23:11:53,299 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1688 transitions. Word has length 15 [2020-10-15 23:11:53,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:11:53,300 INFO L481 AbstractCegarLoop]: Abstraction has 536 states and 1688 transitions. [2020-10-15 23:11:53,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 23:11:53,300 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1688 transitions. [2020-10-15 23:11:53,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 23:11:53,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:11:53,301 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:11:53,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 23:11:53,302 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:11:53,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:11:53,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1734594488, now seen corresponding path program 1 times [2020-10-15 23:11:53,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:11:53,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190667521] [2020-10-15 23:11:53,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:11:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:11:53,342 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:11:53,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190667521] [2020-10-15 23:11:53,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:11:53,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 23:11:53,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840927181] [2020-10-15 23:11:53,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 23:11:53,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:11:53,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 23:11:53,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 23:11:53,344 INFO L87 Difference]: Start difference. First operand 536 states and 1688 transitions. Second operand 5 states. [2020-10-15 23:11:53,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:11:53,427 INFO L93 Difference]: Finished difference Result 736 states and 2123 transitions. [2020-10-15 23:11:53,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 23:11:53,428 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-15 23:11:53,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:11:53,434 INFO L225 Difference]: With dead ends: 736 [2020-10-15 23:11:53,434 INFO L226 Difference]: Without dead ends: 728 [2020-10-15 23:11:53,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:11:53,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-10-15 23:11:53,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 549. [2020-10-15 23:11:53,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-10-15 23:11:53,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 1684 transitions. [2020-10-15 23:11:53,460 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 1684 transitions. Word has length 17 [2020-10-15 23:11:53,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:11:53,460 INFO L481 AbstractCegarLoop]: Abstraction has 549 states and 1684 transitions. [2020-10-15 23:11:53,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 23:11:53,460 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 1684 transitions. [2020-10-15 23:11:53,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-15 23:11:53,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:11:53,462 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:11:53,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 23:11:53,462 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:11:53,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:11:53,462 INFO L82 PathProgramCache]: Analyzing trace with hash -2065233823, now seen corresponding path program 1 times [2020-10-15 23:11:53,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:11:53,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654982381] [2020-10-15 23:11:53,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:11:53,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 23:11:53,476 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 23:11:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 23:11:53,485 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 23:11:53,493 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 23:11:53,493 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 23:11:53,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 23:11:53,494 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-15 23:11:53,494 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 23:11:53,495 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-15 23:11:53,508 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,508 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,508 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,509 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,509 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,509 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,509 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,509 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,510 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,510 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,510 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,510 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,510 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,510 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,511 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,511 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,511 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,511 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,511 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,511 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,511 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,512 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,512 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,512 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,512 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,512 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,512 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,512 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,513 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,513 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,513 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,513 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,513 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,514 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,514 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,514 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,514 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,514 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,515 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,515 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,515 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,515 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,515 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,515 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,515 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,516 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,516 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,516 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,516 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,516 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,516 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,516 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,517 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,517 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,517 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,517 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,517 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,517 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,518 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,518 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,518 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,518 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,518 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,518 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,518 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,519 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,519 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,519 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,519 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,520 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,520 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,520 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,520 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,522 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,522 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,523 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,523 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,523 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,524 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,525 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,525 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,525 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,525 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,527 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,527 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,527 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,527 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,527 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,529 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,529 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,529 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,529 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,530 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,530 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,531 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,531 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,531 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,532 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,532 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,532 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,534 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,535 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,535 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,535 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,535 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,535 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,537 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,538 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,538 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,538 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,538 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,538 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:11:53,540 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-15 23:11:53,540 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 23:11:53,540 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 23:11:53,540 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 23:11:53,541 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 23:11:53,541 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 23:11:53,541 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 23:11:53,541 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 23:11:53,541 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 23:11:53,543 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 23:11:53,543 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 106 transitions, 276 flow [2020-10-15 23:11:53,543 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 106 transitions, 276 flow [2020-10-15 23:11:53,544 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 106 transitions, 276 flow [2020-10-15 23:11:53,571 INFO L129 PetriNetUnfolder]: 7/131 cut-off events. [2020-10-15 23:11:53,572 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-15 23:11:53,574 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. [2020-10-15 23:11:53,578 INFO L117 LiptonReduction]: Number of co-enabled transitions 1756 [2020-10-15 23:11:55,143 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-10-15 23:11:55,423 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-15 23:11:55,606 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-10-15 23:11:55,699 INFO L132 LiptonReduction]: Checked pairs total: 2590 [2020-10-15 23:11:55,699 INFO L134 LiptonReduction]: Total number of compositions: 92 [2020-10-15 23:11:55,699 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 33 transitions, 130 flow [2020-10-15 23:11:55,808 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2060 states. [2020-10-15 23:11:55,808 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states. [2020-10-15 23:11:55,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-15 23:11:55,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:11:55,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-15 23:11:55,809 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 23:11:55,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:11:55,809 INFO L82 PathProgramCache]: Analyzing trace with hash 779528, now seen corresponding path program 1 times [2020-10-15 23:11:55,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:11:55,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866353380] [2020-10-15 23:11:55,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:11:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:11:55,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:11:55,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866353380] [2020-10-15 23:11:55,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:11:55,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 23:11:55,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517765628] [2020-10-15 23:11:55,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 23:11:55,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:11:55,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 23:11:55,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 23:11:55,829 INFO L87 Difference]: Start difference. First operand 2060 states. Second operand 3 states. [2020-10-15 23:11:55,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:11:55,870 INFO L93 Difference]: Finished difference Result 1889 states and 7217 transitions. [2020-10-15 23:11:55,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 23:11:55,870 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-15 23:11:55,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:11:55,887 INFO L225 Difference]: With dead ends: 1889 [2020-10-15 23:11:55,887 INFO L226 Difference]: Without dead ends: 1767 [2020-10-15 23:11:55,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 23:11:55,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-10-15 23:11:55,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1767. [2020-10-15 23:11:55,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-10-15 23:11:55,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 6690 transitions. [2020-10-15 23:11:55,969 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 6690 transitions. Word has length 3 [2020-10-15 23:11:55,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:11:55,970 INFO L481 AbstractCegarLoop]: Abstraction has 1767 states and 6690 transitions. [2020-10-15 23:11:55,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 23:11:55,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 6690 transitions. [2020-10-15 23:11:55,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 23:11:55,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:11:55,970 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:11:55,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 23:11:55,971 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 23:11:55,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:11:55,971 INFO L82 PathProgramCache]: Analyzing trace with hash -666106918, now seen corresponding path program 1 times [2020-10-15 23:11:55,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:11:55,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018255246] [2020-10-15 23:11:55,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:11:55,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:11:56,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:11:56,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018255246] [2020-10-15 23:11:56,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:11:56,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 23:11:56,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724913499] [2020-10-15 23:11:56,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 23:11:56,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:11:56,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 23:11:56,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 23:11:56,017 INFO L87 Difference]: Start difference. First operand 1767 states and 6690 transitions. Second operand 5 states. [2020-10-15 23:11:56,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:11:56,137 INFO L93 Difference]: Finished difference Result 2905 states and 10138 transitions. [2020-10-15 23:11:56,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 23:11:56,138 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-15 23:11:56,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:11:56,161 INFO L225 Difference]: With dead ends: 2905 [2020-10-15 23:11:56,161 INFO L226 Difference]: Without dead ends: 2899 [2020-10-15 23:11:56,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:11:56,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-10-15 23:11:56,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1966. [2020-10-15 23:11:56,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2020-10-15 23:11:56,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 7503 transitions. [2020-10-15 23:11:56,265 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 7503 transitions. Word has length 9 [2020-10-15 23:11:56,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:11:56,265 INFO L481 AbstractCegarLoop]: Abstraction has 1966 states and 7503 transitions. [2020-10-15 23:11:56,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 23:11:56,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 7503 transitions. [2020-10-15 23:11:56,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 23:11:56,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:11:56,266 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:11:56,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 23:11:56,267 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 23:11:56,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:11:56,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1766896000, now seen corresponding path program 1 times [2020-10-15 23:11:56,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:11:56,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695950073] [2020-10-15 23:11:56,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:11:56,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:11:56,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:11:56,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695950073] [2020-10-15 23:11:56,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:11:56,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 23:11:56,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837218229] [2020-10-15 23:11:56,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 23:11:56,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:11:56,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 23:11:56,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 23:11:56,305 INFO L87 Difference]: Start difference. First operand 1966 states and 7503 transitions. Second operand 5 states. [2020-10-15 23:11:56,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:11:56,412 INFO L93 Difference]: Finished difference Result 3204 states and 11312 transitions. [2020-10-15 23:11:56,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 23:11:56,412 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-15 23:11:56,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:11:56,437 INFO L225 Difference]: With dead ends: 3204 [2020-10-15 23:11:56,438 INFO L226 Difference]: Without dead ends: 3194 [2020-10-15 23:11:56,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:11:56,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2020-10-15 23:11:56,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 2200. [2020-10-15 23:11:56,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-10-15 23:11:56,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 8453 transitions. [2020-10-15 23:11:56,549 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 8453 transitions. Word has length 13 [2020-10-15 23:11:56,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:11:56,549 INFO L481 AbstractCegarLoop]: Abstraction has 2200 states and 8453 transitions. [2020-10-15 23:11:56,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 23:11:56,550 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 8453 transitions. [2020-10-15 23:11:56,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 23:11:56,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:11:56,550 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:11:56,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 23:11:56,551 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 23:11:56,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:11:56,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1022394712, now seen corresponding path program 1 times [2020-10-15 23:11:56,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:11:56,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115531230] [2020-10-15 23:11:56,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:11:56,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:11:56,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:11:56,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115531230] [2020-10-15 23:11:56,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139059315] [2020-10-15 23:11:56,607 INFO L95 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 [2020-10-15 23:11:56,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:11:56,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 23:11:56,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:11:56,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:11:56,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:11:56,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 23:11:56,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567708822] [2020-10-15 23:11:56,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 23:11:56,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:11:56,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 23:11:56,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 23:11:56,754 INFO L87 Difference]: Start difference. First operand 2200 states and 8453 transitions. Second operand 12 states. [2020-10-15 23:11:57,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:11:57,131 INFO L93 Difference]: Finished difference Result 4556 states and 14911 transitions. [2020-10-15 23:11:57,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:11:57,131 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-15 23:11:57,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:11:57,155 INFO L225 Difference]: With dead ends: 4556 [2020-10-15 23:11:57,155 INFO L226 Difference]: Without dead ends: 4546 [2020-10-15 23:11:57,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:11:57,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2020-10-15 23:11:57,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 2157. [2020-10-15 23:11:57,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2157 states. [2020-10-15 23:11:57,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 8278 transitions. [2020-10-15 23:11:57,270 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 8278 transitions. Word has length 15 [2020-10-15 23:11:57,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:11:57,270 INFO L481 AbstractCegarLoop]: Abstraction has 2157 states and 8278 transitions. [2020-10-15 23:11:57,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 23:11:57,271 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 8278 transitions. [2020-10-15 23:11:57,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 23:11:57,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:11:57,272 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:11:57,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-15 23:11:57,486 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 23:11:57,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:11:57,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1474969304, now seen corresponding path program 2 times [2020-10-15 23:11:57,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:11:57,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164534] [2020-10-15 23:11:57,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:11:57,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:11:57,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:11:57,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164534] [2020-10-15 23:11:57,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:11:57,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 23:11:57,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810287865] [2020-10-15 23:11:57,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 23:11:57,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:11:57,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 23:11:57,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:11:57,539 INFO L87 Difference]: Start difference. First operand 2157 states and 8278 transitions. Second operand 7 states. [2020-10-15 23:11:57,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:11:57,828 INFO L93 Difference]: Finished difference Result 4612 states and 15111 transitions. [2020-10-15 23:11:57,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:11:57,829 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-15 23:11:57,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:11:57,845 INFO L225 Difference]: With dead ends: 4612 [2020-10-15 23:11:57,845 INFO L226 Difference]: Without dead ends: 4601 [2020-10-15 23:11:57,846 INFO L677 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 [2020-10-15 23:11:57,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2020-10-15 23:11:57,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 2035. [2020-10-15 23:11:57,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2035 states. [2020-10-15 23:11:57,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 7845 transitions. [2020-10-15 23:11:57,952 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 7845 transitions. Word has length 15 [2020-10-15 23:11:57,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:11:57,952 INFO L481 AbstractCegarLoop]: Abstraction has 2035 states and 7845 transitions. [2020-10-15 23:11:57,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 23:11:57,952 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 7845 transitions. [2020-10-15 23:11:57,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 23:11:57,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:11:57,953 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:11:57,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 23:11:57,954 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 23:11:57,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:11:57,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1278978660, now seen corresponding path program 1 times [2020-10-15 23:11:57,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:11:57,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341976979] [2020-10-15 23:11:57,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:11:57,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:11:58,020 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:11:58,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341976979] [2020-10-15 23:11:58,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:11:58,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 23:11:58,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302805697] [2020-10-15 23:11:58,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 23:11:58,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:11:58,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 23:11:58,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 23:11:58,022 INFO L87 Difference]: Start difference. First operand 2035 states and 7845 transitions. Second operand 5 states. [2020-10-15 23:11:58,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:11:58,138 INFO L93 Difference]: Finished difference Result 3265 states and 11681 transitions. [2020-10-15 23:11:58,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 23:11:58,138 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-15 23:11:58,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:11:58,151 INFO L225 Difference]: With dead ends: 3265 [2020-10-15 23:11:58,151 INFO L226 Difference]: Without dead ends: 3250 [2020-10-15 23:11:58,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:11:58,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2020-10-15 23:11:58,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 2281. [2020-10-15 23:11:58,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2020-10-15 23:11:58,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 8755 transitions. [2020-10-15 23:11:58,236 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 8755 transitions. Word has length 17 [2020-10-15 23:11:58,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:11:58,236 INFO L481 AbstractCegarLoop]: Abstraction has 2281 states and 8755 transitions. [2020-10-15 23:11:58,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 23:11:58,237 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 8755 transitions. [2020-10-15 23:11:58,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 23:11:58,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:11:58,238 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:11:58,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 23:11:58,238 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 23:11:58,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:11:58,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1455436228, now seen corresponding path program 1 times [2020-10-15 23:11:58,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:11:58,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052745326] [2020-10-15 23:11:58,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:11:58,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:11:58,298 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 23:11:58,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052745326] [2020-10-15 23:11:58,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506653820] [2020-10-15 23:11:58,299 INFO L95 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 [2020-10-15 23:11:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:11:58,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 23:11:58,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:11:58,509 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 23:11:58,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:11:58,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 23:11:58,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495800128] [2020-10-15 23:11:58,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 23:11:58,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:11:58,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 23:11:58,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 23:11:58,512 INFO L87 Difference]: Start difference. First operand 2281 states and 8755 transitions. Second operand 12 states. [2020-10-15 23:11:58,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:11:58,874 INFO L93 Difference]: Finished difference Result 4825 states and 15986 transitions. [2020-10-15 23:11:58,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:11:58,875 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-15 23:11:58,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:11:58,892 INFO L225 Difference]: With dead ends: 4825 [2020-10-15 23:11:58,892 INFO L226 Difference]: Without dead ends: 4813 [2020-10-15 23:11:58,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:11:58,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4813 states. [2020-10-15 23:11:58,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4813 to 2305. [2020-10-15 23:11:58,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-10-15 23:11:58,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 8815 transitions. [2020-10-15 23:11:58,995 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 8815 transitions. Word has length 19 [2020-10-15 23:11:58,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:11:58,995 INFO L481 AbstractCegarLoop]: Abstraction has 2305 states and 8815 transitions. [2020-10-15 23:11:58,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 23:11:58,995 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 8815 transitions. [2020-10-15 23:11:58,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 23:11:58,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:11:58,997 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:11:59,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:11:59,211 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 23:11:59,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:11:59,211 INFO L82 PathProgramCache]: Analyzing trace with hash -979473248, now seen corresponding path program 1 times [2020-10-15 23:11:59,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:11:59,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258318835] [2020-10-15 23:11:59,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:11:59,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:11:59,262 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:11:59,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258318835] [2020-10-15 23:11:59,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047680449] [2020-10-15 23:11:59,262 INFO L95 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 [2020-10-15 23:11:59,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:11:59,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 23:11:59,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:11:59,411 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:11:59,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:11:59,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 23:11:59,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731447209] [2020-10-15 23:11:59,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 23:11:59,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:11:59,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 23:11:59,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 23:11:59,413 INFO L87 Difference]: Start difference. First operand 2305 states and 8815 transitions. Second operand 12 states. [2020-10-15 23:11:59,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:11:59,826 INFO L93 Difference]: Finished difference Result 4942 states and 16410 transitions. [2020-10-15 23:11:59,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:11:59,827 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-15 23:11:59,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:11:59,846 INFO L225 Difference]: With dead ends: 4942 [2020-10-15 23:11:59,846 INFO L226 Difference]: Without dead ends: 4925 [2020-10-15 23:11:59,850 INFO L677 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 [2020-10-15 23:11:59,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4925 states. [2020-10-15 23:11:59,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4925 to 2299. [2020-10-15 23:11:59,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2299 states. [2020-10-15 23:11:59,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 8782 transitions. [2020-10-15 23:11:59,961 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 8782 transitions. Word has length 19 [2020-10-15 23:11:59,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:11:59,961 INFO L481 AbstractCegarLoop]: Abstraction has 2299 states and 8782 transitions. [2020-10-15 23:11:59,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 23:11:59,961 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 8782 transitions. [2020-10-15 23:11:59,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 23:11:59,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:11:59,962 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:00,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:12:00,177 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 23:12:00,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:00,177 INFO L82 PathProgramCache]: Analyzing trace with hash -737855584, now seen corresponding path program 2 times [2020-10-15 23:12:00,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:00,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40112093] [2020-10-15 23:12:00,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:00,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:00,228 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:12:00,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40112093] [2020-10-15 23:12:00,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:12:00,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 23:12:00,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509098803] [2020-10-15 23:12:00,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 23:12:00,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:00,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 23:12:00,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:12:00,230 INFO L87 Difference]: Start difference. First operand 2299 states and 8782 transitions. Second operand 7 states. [2020-10-15 23:12:00,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:00,516 INFO L93 Difference]: Finished difference Result 4934 states and 16393 transitions. [2020-10-15 23:12:00,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:12:00,517 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-15 23:12:00,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:00,534 INFO L225 Difference]: With dead ends: 4934 [2020-10-15 23:12:00,534 INFO L226 Difference]: Without dead ends: 4917 [2020-10-15 23:12:00,534 INFO L677 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 [2020-10-15 23:12:00,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4917 states. [2020-10-15 23:12:00,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4917 to 2216. [2020-10-15 23:12:00,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2216 states. [2020-10-15 23:12:00,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 8477 transitions. [2020-10-15 23:12:00,723 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 8477 transitions. Word has length 19 [2020-10-15 23:12:00,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:00,723 INFO L481 AbstractCegarLoop]: Abstraction has 2216 states and 8477 transitions. [2020-10-15 23:12:00,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 23:12:00,724 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 8477 transitions. [2020-10-15 23:12:00,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 23:12:00,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:00,725 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:00,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 23:12:00,725 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 23:12:00,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:00,726 INFO L82 PathProgramCache]: Analyzing trace with hash -737840828, now seen corresponding path program 2 times [2020-10-15 23:12:00,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:00,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617989356] [2020-10-15 23:12:00,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:00,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:00,796 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:12:00,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617989356] [2020-10-15 23:12:00,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:12:00,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 23:12:00,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553453837] [2020-10-15 23:12:00,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 23:12:00,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:00,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 23:12:00,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:12:00,798 INFO L87 Difference]: Start difference. First operand 2216 states and 8477 transitions. Second operand 7 states. [2020-10-15 23:12:01,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:01,080 INFO L93 Difference]: Finished difference Result 4774 states and 15828 transitions. [2020-10-15 23:12:01,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:12:01,080 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-15 23:12:01,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:01,093 INFO L225 Difference]: With dead ends: 4774 [2020-10-15 23:12:01,094 INFO L226 Difference]: Without dead ends: 4757 [2020-10-15 23:12:01,094 INFO L677 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 [2020-10-15 23:12:01,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2020-10-15 23:12:01,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 2150. [2020-10-15 23:12:01,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2150 states. [2020-10-15 23:12:01,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 8243 transitions. [2020-10-15 23:12:01,192 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 8243 transitions. Word has length 19 [2020-10-15 23:12:01,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:01,192 INFO L481 AbstractCegarLoop]: Abstraction has 2150 states and 8243 transitions. [2020-10-15 23:12:01,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 23:12:01,192 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 8243 transitions. [2020-10-15 23:12:01,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 23:12:01,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:01,194 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:01,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 23:12:01,194 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 23:12:01,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:01,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1726751032, now seen corresponding path program 1 times [2020-10-15 23:12:01,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:01,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730118698] [2020-10-15 23:12:01,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:01,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:01,281 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:12:01,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730118698] [2020-10-15 23:12:01,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235741512] [2020-10-15 23:12:01,282 INFO L95 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 [2020-10-15 23:12:01,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:01,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:12:01,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:12:01,452 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:12:01,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:12:01,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:12:01,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820594675] [2020-10-15 23:12:01,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:12:01,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:01,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:12:01,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:12:01,454 INFO L87 Difference]: Start difference. First operand 2150 states and 8243 transitions. Second operand 16 states. [2020-10-15 23:12:02,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:02,271 INFO L93 Difference]: Finished difference Result 6025 states and 18746 transitions. [2020-10-15 23:12:02,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:12:02,272 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-15 23:12:02,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:02,289 INFO L225 Difference]: With dead ends: 6025 [2020-10-15 23:12:02,289 INFO L226 Difference]: Without dead ends: 6017 [2020-10-15 23:12:02,291 INFO L677 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 [2020-10-15 23:12:02,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6017 states. [2020-10-15 23:12:02,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6017 to 2117. [2020-10-15 23:12:02,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2117 states. [2020-10-15 23:12:02,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 8106 transitions. [2020-10-15 23:12:02,487 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 8106 transitions. Word has length 21 [2020-10-15 23:12:02,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:02,487 INFO L481 AbstractCegarLoop]: Abstraction has 2117 states and 8106 transitions. [2020-10-15 23:12:02,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:12:02,488 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 8106 transitions. [2020-10-15 23:12:02,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 23:12:02,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:02,491 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:02,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-15 23:12:02,700 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 23:12:02,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:02,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1485133368, now seen corresponding path program 2 times [2020-10-15 23:12:02,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:02,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140853437] [2020-10-15 23:12:02,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:02,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:02,787 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 23:12:02,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140853437] [2020-10-15 23:12:02,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075960217] [2020-10-15 23:12:02,788 INFO L93 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 [2020-10-15 23:12:02,854 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 23:12:02,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:12:02,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:12:02,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:12:02,981 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 23:12:02,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:12:02,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:12:02,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517840511] [2020-10-15 23:12:02,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:12:02,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:02,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:12:02,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:12:02,983 INFO L87 Difference]: Start difference. First operand 2117 states and 8106 transitions. Second operand 16 states. [2020-10-15 23:12:03,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:03,784 INFO L93 Difference]: Finished difference Result 5914 states and 18384 transitions. [2020-10-15 23:12:03,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:12:03,785 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-15 23:12:03,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:03,794 INFO L225 Difference]: With dead ends: 5914 [2020-10-15 23:12:03,794 INFO L226 Difference]: Without dead ends: 5903 [2020-10-15 23:12:03,795 INFO L677 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 [2020-10-15 23:12:03,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5903 states. [2020-10-15 23:12:03,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5903 to 2085. [2020-10-15 23:12:03,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2085 states. [2020-10-15 23:12:03,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 7975 transitions. [2020-10-15 23:12:03,888 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 7975 transitions. Word has length 21 [2020-10-15 23:12:03,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:03,888 INFO L481 AbstractCegarLoop]: Abstraction has 2085 states and 7975 transitions. [2020-10-15 23:12:03,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:12:03,889 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 7975 transitions. [2020-10-15 23:12:03,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 23:12:03,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:03,890 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:04,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:12:04,103 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 23:12:04,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:04,104 INFO L82 PathProgramCache]: Analyzing trace with hash -268549816, now seen corresponding path program 3 times [2020-10-15 23:12:04,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:04,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398660204] [2020-10-15 23:12:04,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:04,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:04,178 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:12:04,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398660204] [2020-10-15 23:12:04,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878202009] [2020-10-15 23:12:04,179 INFO L93 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 [2020-10-15 23:12:04,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 23:12:04,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:12:04,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:12:04,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:12:04,365 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:12:04,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:12:04,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:12:04,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764612180] [2020-10-15 23:12:04,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:12:04,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:04,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:12:04,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:12:04,367 INFO L87 Difference]: Start difference. First operand 2085 states and 7975 transitions. Second operand 16 states. [2020-10-15 23:12:05,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:05,177 INFO L93 Difference]: Finished difference Result 5907 states and 18375 transitions. [2020-10-15 23:12:05,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:12:05,178 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-15 23:12:05,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:05,194 INFO L225 Difference]: With dead ends: 5907 [2020-10-15 23:12:05,194 INFO L226 Difference]: Without dead ends: 5899 [2020-10-15 23:12:05,195 INFO L677 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 [2020-10-15 23:12:05,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5899 states. [2020-10-15 23:12:05,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5899 to 2008. [2020-10-15 23:12:05,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2008 states. [2020-10-15 23:12:05,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 7698 transitions. [2020-10-15 23:12:05,351 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 7698 transitions. Word has length 21 [2020-10-15 23:12:05,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:05,351 INFO L481 AbstractCegarLoop]: Abstraction has 2008 states and 7698 transitions. [2020-10-15 23:12:05,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:12:05,351 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 7698 transitions. [2020-10-15 23:12:05,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 23:12:05,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:05,353 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:05,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-10-15 23:12:05,567 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 23:12:05,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:05,568 INFO L82 PathProgramCache]: Analyzing trace with hash -675948728, now seen corresponding path program 4 times [2020-10-15 23:12:05,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:05,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916861808] [2020-10-15 23:12:05,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:05,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:05,651 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:12:05,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916861808] [2020-10-15 23:12:05,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725231098] [2020-10-15 23:12:05,652 INFO L93 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 [2020-10-15 23:12:05,723 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 23:12:05,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:12:05,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:12:05,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:12:05,821 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:12:05,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:12:05,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:12:05,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854050088] [2020-10-15 23:12:05,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:12:05,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:05,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:12:05,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:12:05,824 INFO L87 Difference]: Start difference. First operand 2008 states and 7698 transitions. Second operand 16 states. [2020-10-15 23:12:06,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:06,653 INFO L93 Difference]: Finished difference Result 5835 states and 18155 transitions. [2020-10-15 23:12:06,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:12:06,653 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-15 23:12:06,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:06,662 INFO L225 Difference]: With dead ends: 5835 [2020-10-15 23:12:06,662 INFO L226 Difference]: Without dead ends: 5824 [2020-10-15 23:12:06,663 INFO L677 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 [2020-10-15 23:12:06,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5824 states. [2020-10-15 23:12:06,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5824 to 1976. [2020-10-15 23:12:06,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1976 states. [2020-10-15 23:12:06,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 7567 transitions. [2020-10-15 23:12:06,743 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 7567 transitions. Word has length 21 [2020-10-15 23:12:06,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:06,744 INFO L481 AbstractCegarLoop]: Abstraction has 1976 states and 7567 transitions. [2020-10-15 23:12:06,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:12:06,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 7567 transitions. [2020-10-15 23:12:06,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 23:12:06,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:06,746 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:06,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-15 23:12:06,962 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 23:12:06,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:06,962 INFO L82 PathProgramCache]: Analyzing trace with hash -409607608, now seen corresponding path program 5 times [2020-10-15 23:12:06,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:06,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46161974] [2020-10-15 23:12:06,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:06,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:07,034 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:12:07,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46161974] [2020-10-15 23:12:07,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:12:07,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:12:07,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661156945] [2020-10-15 23:12:07,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:12:07,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:07,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:12:07,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:12:07,036 INFO L87 Difference]: Start difference. First operand 1976 states and 7567 transitions. Second operand 9 states. [2020-10-15 23:12:07,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:07,671 INFO L93 Difference]: Finished difference Result 5820 states and 18126 transitions. [2020-10-15 23:12:07,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:12:07,672 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-15 23:12:07,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:07,684 INFO L225 Difference]: With dead ends: 5820 [2020-10-15 23:12:07,684 INFO L226 Difference]: Without dead ends: 5812 [2020-10-15 23:12:07,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 23:12:07,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5812 states. [2020-10-15 23:12:07,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5812 to 1907. [2020-10-15 23:12:07,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1907 states. [2020-10-15 23:12:07,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 7310 transitions. [2020-10-15 23:12:07,813 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 7310 transitions. Word has length 21 [2020-10-15 23:12:07,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:07,813 INFO L481 AbstractCegarLoop]: Abstraction has 1907 states and 7310 transitions. [2020-10-15 23:12:07,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:12:07,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 7310 transitions. [2020-10-15 23:12:07,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 23:12:07,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:07,815 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:07,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-15 23:12:07,816 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 23:12:07,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:07,816 INFO L82 PathProgramCache]: Analyzing trace with hash -395441848, now seen corresponding path program 6 times [2020-10-15 23:12:07,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:07,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354662274] [2020-10-15 23:12:07,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:07,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:07,887 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:12:07,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354662274] [2020-10-15 23:12:07,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:12:07,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:12:07,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21545542] [2020-10-15 23:12:07,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:12:07,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:07,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:12:07,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:12:07,889 INFO L87 Difference]: Start difference. First operand 1907 states and 7310 transitions. Second operand 9 states. [2020-10-15 23:12:08,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:08,572 INFO L93 Difference]: Finished difference Result 5717 states and 17784 transitions. [2020-10-15 23:12:08,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:12:08,572 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-15 23:12:08,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:08,580 INFO L225 Difference]: With dead ends: 5717 [2020-10-15 23:12:08,581 INFO L226 Difference]: Without dead ends: 5705 [2020-10-15 23:12:08,581 INFO L677 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 [2020-10-15 23:12:08,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5705 states. [2020-10-15 23:12:08,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5705 to 1800. [2020-10-15 23:12:08,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1800 states. [2020-10-15 23:12:08,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 6961 transitions. [2020-10-15 23:12:08,662 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 6961 transitions. Word has length 21 [2020-10-15 23:12:08,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:08,662 INFO L481 AbstractCegarLoop]: Abstraction has 1800 states and 6961 transitions. [2020-10-15 23:12:08,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:12:08,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 6961 transitions. [2020-10-15 23:12:08,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 23:12:08,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:08,664 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:08,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-15 23:12:08,664 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 23:12:08,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:08,665 INFO L82 PathProgramCache]: Analyzing trace with hash -334654421, now seen corresponding path program 1 times [2020-10-15 23:12:08,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:08,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116259976] [2020-10-15 23:12:08,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:08,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:08,705 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:12:08,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116259976] [2020-10-15 23:12:08,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:12:08,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 23:12:08,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525520519] [2020-10-15 23:12:08,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 23:12:08,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:08,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 23:12:08,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 23:12:08,708 INFO L87 Difference]: Start difference. First operand 1800 states and 6961 transitions. Second operand 5 states. [2020-10-15 23:12:08,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:08,807 INFO L93 Difference]: Finished difference Result 2762 states and 9976 transitions. [2020-10-15 23:12:08,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 23:12:08,808 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-15 23:12:08,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:08,815 INFO L225 Difference]: With dead ends: 2762 [2020-10-15 23:12:08,815 INFO L226 Difference]: Without dead ends: 2746 [2020-10-15 23:12:08,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:12:08,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2020-10-15 23:12:08,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 1965. [2020-10-15 23:12:08,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2020-10-15 23:12:08,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 7429 transitions. [2020-10-15 23:12:08,871 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 7429 transitions. Word has length 21 [2020-10-15 23:12:08,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:08,872 INFO L481 AbstractCegarLoop]: Abstraction has 1965 states and 7429 transitions. [2020-10-15 23:12:08,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 23:12:08,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 7429 transitions. [2020-10-15 23:12:08,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-15 23:12:08,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:08,874 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:08,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-15 23:12:08,874 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 23:12:08,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:08,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1788555247, now seen corresponding path program 1 times [2020-10-15 23:12:08,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:08,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31167725] [2020-10-15 23:12:08,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 23:12:08,882 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 23:12:08,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 23:12:08,888 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 23:12:08,895 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 23:12:08,896 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 23:12:08,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-15 23:12:08,896 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-15 23:12:08,896 WARN L371 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 23:12:08,897 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-15 23:12:08,909 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,909 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,910 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,910 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,910 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,910 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,910 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,910 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,910 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,911 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,911 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,911 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,911 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,911 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,911 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,911 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,912 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,912 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,912 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,912 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,912 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,912 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,913 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,913 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,913 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,913 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,913 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,913 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,914 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,914 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,914 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,914 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,914 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,914 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,914 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,915 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,915 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,915 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,915 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,915 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,915 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,915 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,916 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,916 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,916 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,916 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,916 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,916 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,917 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,917 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,917 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,917 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,917 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,917 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,917 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,918 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,918 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,918 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,918 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,918 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,918 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,918 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,919 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,919 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,919 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,919 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,919 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,919 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,919 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,920 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,920 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,920 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,920 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,920 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,920 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,920 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,921 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,921 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,921 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,921 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,921 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,921 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,921 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,922 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,922 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,922 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,922 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,922 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,922 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,923 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,924 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,924 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,924 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,924 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,925 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,926 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,926 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,926 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,926 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,926 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,927 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,927 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,927 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,928 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,928 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,929 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,929 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,929 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,929 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,929 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,930 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,930 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,931 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,931 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,931 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,931 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,932 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,932 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,932 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,932 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,932 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,933 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,933 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,934 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,934 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,934 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,934 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,934 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,935 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,935 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,935 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,936 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,936 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,936 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,937 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,937 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,937 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,937 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,937 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,938 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:12:08,939 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-15 23:12:08,939 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 23:12:08,939 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 23:12:08,939 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 23:12:08,939 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 23:12:08,939 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 23:12:08,939 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 23:12:08,940 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 23:12:08,940 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 23:12:08,941 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 23:12:08,941 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 122 transitions, 334 flow [2020-10-15 23:12:08,941 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 122 transitions, 334 flow [2020-10-15 23:12:08,941 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 137 places, 122 transitions, 334 flow [2020-10-15 23:12:08,962 INFO L129 PetriNetUnfolder]: 8/152 cut-off events. [2020-10-15 23:12:08,962 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-15 23:12:08,964 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. [2020-10-15 23:12:08,967 INFO L117 LiptonReduction]: Number of co-enabled transitions 2264 [2020-10-15 23:12:10,628 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-10-15 23:12:10,857 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 58 [2020-10-15 23:12:11,065 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-10-15 23:12:11,144 INFO L132 LiptonReduction]: Checked pairs total: 4038 [2020-10-15 23:12:11,144 INFO L134 LiptonReduction]: Total number of compositions: 111 [2020-10-15 23:12:11,145 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 39 transitions, 168 flow [2020-10-15 23:12:11,898 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6191 states. [2020-10-15 23:12:11,899 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states. [2020-10-15 23:12:11,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-15 23:12:11,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:11,899 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-15 23:12:11,899 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:12:11,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:11,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1026170, now seen corresponding path program 1 times [2020-10-15 23:12:11,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:11,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188847959] [2020-10-15 23:12:11,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:11,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:11,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:12:11,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188847959] [2020-10-15 23:12:11,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:12:11,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 23:12:11,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084749313] [2020-10-15 23:12:11,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 23:12:11,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:11,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 23:12:11,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 23:12:11,922 INFO L87 Difference]: Start difference. First operand 6191 states. Second operand 3 states. [2020-10-15 23:12:11,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:11,998 INFO L93 Difference]: Finished difference Result 5844 states and 26316 transitions. [2020-10-15 23:12:11,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 23:12:11,999 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-15 23:12:11,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:12,016 INFO L225 Difference]: With dead ends: 5844 [2020-10-15 23:12:12,016 INFO L226 Difference]: Without dead ends: 5479 [2020-10-15 23:12:12,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 23:12:12,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2020-10-15 23:12:12,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 5479. [2020-10-15 23:12:12,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5479 states. [2020-10-15 23:12:12,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5479 states to 5479 states and 24493 transitions. [2020-10-15 23:12:12,200 INFO L78 Accepts]: Start accepts. Automaton has 5479 states and 24493 transitions. Word has length 3 [2020-10-15 23:12:12,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:12,201 INFO L481 AbstractCegarLoop]: Abstraction has 5479 states and 24493 transitions. [2020-10-15 23:12:12,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 23:12:12,201 INFO L276 IsEmpty]: Start isEmpty. Operand 5479 states and 24493 transitions. [2020-10-15 23:12:12,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 23:12:12,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:12,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:12,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-15 23:12:12,202 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:12:12,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:12,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1344335463, now seen corresponding path program 1 times [2020-10-15 23:12:12,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:12,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029465900] [2020-10-15 23:12:12,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:12,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:12,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:12:12,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029465900] [2020-10-15 23:12:12,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:12:12,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 23:12:12,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071982572] [2020-10-15 23:12:12,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 23:12:12,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:12,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 23:12:12,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 23:12:12,244 INFO L87 Difference]: Start difference. First operand 5479 states and 24493 transitions. Second operand 5 states. [2020-10-15 23:12:12,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:12,377 INFO L93 Difference]: Finished difference Result 9673 states and 40333 transitions. [2020-10-15 23:12:12,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 23:12:12,377 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-15 23:12:12,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:12,398 INFO L225 Difference]: With dead ends: 9673 [2020-10-15 23:12:12,398 INFO L226 Difference]: Without dead ends: 9666 [2020-10-15 23:12:12,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:12:12,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9666 states. [2020-10-15 23:12:12,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9666 to 6331. [2020-10-15 23:12:12,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6331 states. [2020-10-15 23:12:12,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 28544 transitions. [2020-10-15 23:12:12,784 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 28544 transitions. Word has length 9 [2020-10-15 23:12:12,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:12,784 INFO L481 AbstractCegarLoop]: Abstraction has 6331 states and 28544 transitions. [2020-10-15 23:12:12,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 23:12:12,785 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 28544 transitions. [2020-10-15 23:12:12,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 23:12:12,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:12,785 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:12,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-15 23:12:12,785 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:12:12,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:12,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1513378118, now seen corresponding path program 1 times [2020-10-15 23:12:12,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:12,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46308831] [2020-10-15 23:12:12,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:12,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:12,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:12:12,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46308831] [2020-10-15 23:12:12,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:12:12,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 23:12:12,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088488010] [2020-10-15 23:12:12,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 23:12:12,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:12,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 23:12:12,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 23:12:12,821 INFO L87 Difference]: Start difference. First operand 6331 states and 28544 transitions. Second operand 5 states. [2020-10-15 23:12:12,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:12,969 INFO L93 Difference]: Finished difference Result 11081 states and 46826 transitions. [2020-10-15 23:12:12,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 23:12:12,970 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-15 23:12:12,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:12,993 INFO L225 Difference]: With dead ends: 11081 [2020-10-15 23:12:12,993 INFO L226 Difference]: Without dead ends: 11068 [2020-10-15 23:12:12,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:12:13,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11068 states. [2020-10-15 23:12:13,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11068 to 7391. [2020-10-15 23:12:13,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7391 states. [2020-10-15 23:12:13,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7391 states to 7391 states and 33694 transitions. [2020-10-15 23:12:13,207 INFO L78 Accepts]: Start accepts. Automaton has 7391 states and 33694 transitions. Word has length 13 [2020-10-15 23:12:13,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:13,207 INFO L481 AbstractCegarLoop]: Abstraction has 7391 states and 33694 transitions. [2020-10-15 23:12:13,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 23:12:13,208 INFO L276 IsEmpty]: Start isEmpty. Operand 7391 states and 33694 transitions. [2020-10-15 23:12:13,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 23:12:13,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:13,208 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:13,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-15 23:12:13,209 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:12:13,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:13,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1678648171, now seen corresponding path program 1 times [2020-10-15 23:12:13,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:13,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328482912] [2020-10-15 23:12:13,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:13,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:13,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:12:13,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328482912] [2020-10-15 23:12:13,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012291872] [2020-10-15 23:12:13,255 INFO L95 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 [2020-10-15 23:12:13,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:13,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 23:12:13,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:12:13,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:12:13,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:12:13,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 23:12:13,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451965216] [2020-10-15 23:12:13,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 23:12:13,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:13,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 23:12:13,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 23:12:13,406 INFO L87 Difference]: Start difference. First operand 7391 states and 33694 transitions. Second operand 12 states. [2020-10-15 23:12:13,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:13,792 INFO L93 Difference]: Finished difference Result 16749 states and 66010 transitions. [2020-10-15 23:12:13,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:12:13,793 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-15 23:12:13,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:13,830 INFO L225 Difference]: With dead ends: 16749 [2020-10-15 23:12:13,830 INFO L226 Difference]: Without dead ends: 16736 [2020-10-15 23:12:13,830 INFO L677 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 [2020-10-15 23:12:13,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16736 states. [2020-10-15 23:12:14,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16736 to 7303. [2020-10-15 23:12:14,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7303 states. [2020-10-15 23:12:14,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 33260 transitions. [2020-10-15 23:12:14,114 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 33260 transitions. Word has length 15 [2020-10-15 23:12:14,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:14,114 INFO L481 AbstractCegarLoop]: Abstraction has 7303 states and 33260 transitions. [2020-10-15 23:12:14,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 23:12:14,114 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 33260 transitions. [2020-10-15 23:12:14,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 23:12:14,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:14,115 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:14,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:12:14,330 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:12:14,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:14,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1637555113, now seen corresponding path program 2 times [2020-10-15 23:12:14,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:14,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716934327] [2020-10-15 23:12:14,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:14,577 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2020-10-15 23:12:14,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:12:14,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716934327] [2020-10-15 23:12:14,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:12:14,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 23:12:14,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241882895] [2020-10-15 23:12:14,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 23:12:14,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:14,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 23:12:14,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:12:14,597 INFO L87 Difference]: Start difference. First operand 7303 states and 33260 transitions. Second operand 7 states. [2020-10-15 23:12:14,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:14,961 INFO L93 Difference]: Finished difference Result 17085 states and 67393 transitions. [2020-10-15 23:12:14,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:12:14,962 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-15 23:12:14,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:14,999 INFO L225 Difference]: With dead ends: 17085 [2020-10-15 23:12:14,999 INFO L226 Difference]: Without dead ends: 17071 [2020-10-15 23:12:15,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-15 23:12:15,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17071 states. [2020-10-15 23:12:15,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17071 to 7048. [2020-10-15 23:12:15,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7048 states. [2020-10-15 23:12:15,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7048 states to 7048 states and 32136 transitions. [2020-10-15 23:12:15,267 INFO L78 Accepts]: Start accepts. Automaton has 7048 states and 32136 transitions. Word has length 15 [2020-10-15 23:12:15,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:15,267 INFO L481 AbstractCegarLoop]: Abstraction has 7048 states and 32136 transitions. [2020-10-15 23:12:15,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 23:12:15,268 INFO L276 IsEmpty]: Start isEmpty. Operand 7048 states and 32136 transitions. [2020-10-15 23:12:15,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 23:12:15,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:15,268 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:15,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-15 23:12:15,269 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:12:15,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:15,269 INFO L82 PathProgramCache]: Analyzing trace with hash -288445665, now seen corresponding path program 1 times [2020-10-15 23:12:15,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:15,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892530854] [2020-10-15 23:12:15,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:15,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:15,316 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:12:15,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892530854] [2020-10-15 23:12:15,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:12:15,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 23:12:15,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261874645] [2020-10-15 23:12:15,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 23:12:15,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:15,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 23:12:15,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 23:12:15,318 INFO L87 Difference]: Start difference. First operand 7048 states and 32136 transitions. Second operand 5 states. [2020-10-15 23:12:15,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:15,495 INFO L93 Difference]: Finished difference Result 12234 states and 52488 transitions. [2020-10-15 23:12:15,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 23:12:15,496 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-15 23:12:15,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:15,541 INFO L225 Difference]: With dead ends: 12234 [2020-10-15 23:12:15,541 INFO L226 Difference]: Without dead ends: 12212 [2020-10-15 23:12:15,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:12:15,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12212 states. [2020-10-15 23:12:15,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12212 to 8342. [2020-10-15 23:12:15,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8342 states. [2020-10-15 23:12:15,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8342 states to 8342 states and 38278 transitions. [2020-10-15 23:12:15,852 INFO L78 Accepts]: Start accepts. Automaton has 8342 states and 38278 transitions. Word has length 17 [2020-10-15 23:12:15,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:15,852 INFO L481 AbstractCegarLoop]: Abstraction has 8342 states and 38278 transitions. [2020-10-15 23:12:15,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 23:12:15,852 INFO L276 IsEmpty]: Start isEmpty. Operand 8342 states and 38278 transitions. [2020-10-15 23:12:15,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 23:12:15,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:15,854 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:15,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-15 23:12:15,854 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:12:15,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:15,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1255672082, now seen corresponding path program 1 times [2020-10-15 23:12:15,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:15,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009878621] [2020-10-15 23:12:15,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:15,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:15,902 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 23:12:15,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009878621] [2020-10-15 23:12:15,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655721916] [2020-10-15 23:12:15,903 INFO L95 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 [2020-10-15 23:12:15,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:15,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 23:12:15,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:12:16,048 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 23:12:16,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:12:16,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 23:12:16,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838686081] [2020-10-15 23:12:16,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 23:12:16,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:16,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 23:12:16,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 23:12:16,050 INFO L87 Difference]: Start difference. First operand 8342 states and 38278 transitions. Second operand 12 states. [2020-10-15 23:12:16,319 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-10-15 23:12:16,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:16,609 INFO L93 Difference]: Finished difference Result 19016 states and 76191 transitions. [2020-10-15 23:12:16,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:12:16,610 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-15 23:12:16,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:16,652 INFO L225 Difference]: With dead ends: 19016 [2020-10-15 23:12:16,652 INFO L226 Difference]: Without dead ends: 18998 [2020-10-15 23:12:16,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:12:16,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18998 states. [2020-10-15 23:12:16,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18998 to 8452. [2020-10-15 23:12:16,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8452 states. [2020-10-15 23:12:16,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8452 states to 8452 states and 38704 transitions. [2020-10-15 23:12:16,963 INFO L78 Accepts]: Start accepts. Automaton has 8452 states and 38704 transitions. Word has length 19 [2020-10-15 23:12:16,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:16,963 INFO L481 AbstractCegarLoop]: Abstraction has 8452 states and 38704 transitions. [2020-10-15 23:12:16,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 23:12:16,964 INFO L276 IsEmpty]: Start isEmpty. Operand 8452 states and 38704 transitions. [2020-10-15 23:12:16,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 23:12:16,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:16,965 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:17,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-15 23:12:17,171 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:12:17,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:17,171 INFO L82 PathProgramCache]: Analyzing trace with hash 402059005, now seen corresponding path program 1 times [2020-10-15 23:12:17,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:17,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019463014] [2020-10-15 23:12:17,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:17,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:17,216 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:12:17,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019463014] [2020-10-15 23:12:17,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594978661] [2020-10-15 23:12:17,217 INFO L95 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 [2020-10-15 23:12:17,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:17,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 23:12:17,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:12:17,405 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:12:17,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:12:17,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 23:12:17,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983510817] [2020-10-15 23:12:17,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 23:12:17,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:17,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 23:12:17,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 23:12:17,407 INFO L87 Difference]: Start difference. First operand 8452 states and 38704 transitions. Second operand 12 states. [2020-10-15 23:12:17,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:17,953 INFO L93 Difference]: Finished difference Result 19670 states and 79028 transitions. [2020-10-15 23:12:17,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:12:17,954 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-15 23:12:17,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:18,034 INFO L225 Difference]: With dead ends: 19670 [2020-10-15 23:12:18,034 INFO L226 Difference]: Without dead ends: 19645 [2020-10-15 23:12:18,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:12:18,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19645 states. [2020-10-15 23:12:18,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19645 to 8480. [2020-10-15 23:12:18,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8480 states. [2020-10-15 23:12:18,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8480 states to 8480 states and 38825 transitions. [2020-10-15 23:12:18,415 INFO L78 Accepts]: Start accepts. Automaton has 8480 states and 38825 transitions. Word has length 19 [2020-10-15 23:12:18,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:18,415 INFO L481 AbstractCegarLoop]: Abstraction has 8480 states and 38825 transitions. [2020-10-15 23:12:18,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 23:12:18,415 INFO L276 IsEmpty]: Start isEmpty. Operand 8480 states and 38825 transitions. [2020-10-15 23:12:18,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 23:12:18,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:18,416 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:18,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-15 23:12:18,630 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:12:18,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:18,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1976597437, now seen corresponding path program 2 times [2020-10-15 23:12:18,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:18,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177526336] [2020-10-15 23:12:18,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:18,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:18,683 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:12:18,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177526336] [2020-10-15 23:12:18,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:12:18,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 23:12:18,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193187613] [2020-10-15 23:12:18,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 23:12:18,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:18,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 23:12:18,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:12:18,685 INFO L87 Difference]: Start difference. First operand 8480 states and 38825 transitions. Second operand 7 states. [2020-10-15 23:12:19,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:19,297 INFO L93 Difference]: Finished difference Result 19852 states and 79846 transitions. [2020-10-15 23:12:19,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:12:19,298 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-15 23:12:19,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:19,358 INFO L225 Difference]: With dead ends: 19852 [2020-10-15 23:12:19,358 INFO L226 Difference]: Without dead ends: 19827 [2020-10-15 23:12:19,358 INFO L677 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 [2020-10-15 23:12:19,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19827 states. [2020-10-15 23:12:19,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19827 to 8379. [2020-10-15 23:12:19,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8379 states. [2020-10-15 23:12:19,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8379 states to 8379 states and 38406 transitions. [2020-10-15 23:12:19,688 INFO L78 Accepts]: Start accepts. Automaton has 8379 states and 38406 transitions. Word has length 19 [2020-10-15 23:12:19,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:19,688 INFO L481 AbstractCegarLoop]: Abstraction has 8379 states and 38406 transitions. [2020-10-15 23:12:19,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 23:12:19,688 INFO L276 IsEmpty]: Start isEmpty. Operand 8379 states and 38406 transitions. [2020-10-15 23:12:19,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 23:12:19,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:19,689 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:19,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-15 23:12:19,689 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:12:19,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:19,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1976577008, now seen corresponding path program 2 times [2020-10-15 23:12:19,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:19,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244719136] [2020-10-15 23:12:19,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:19,732 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:12:19,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244719136] [2020-10-15 23:12:19,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:12:19,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 23:12:19,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778826020] [2020-10-15 23:12:19,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 23:12:19,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:19,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 23:12:19,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:12:19,734 INFO L87 Difference]: Start difference. First operand 8379 states and 38406 transitions. Second operand 7 states. [2020-10-15 23:12:20,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:20,091 INFO L93 Difference]: Finished difference Result 19555 states and 78564 transitions. [2020-10-15 23:12:20,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:12:20,092 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-15 23:12:20,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:20,134 INFO L225 Difference]: With dead ends: 19555 [2020-10-15 23:12:20,134 INFO L226 Difference]: Without dead ends: 19530 [2020-10-15 23:12:20,135 INFO L677 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 [2020-10-15 23:12:20,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19530 states. [2020-10-15 23:12:20,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19530 to 8317. [2020-10-15 23:12:20,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8317 states. [2020-10-15 23:12:20,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8317 states to 8317 states and 38184 transitions. [2020-10-15 23:12:20,454 INFO L78 Accepts]: Start accepts. Automaton has 8317 states and 38184 transitions. Word has length 19 [2020-10-15 23:12:20,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:20,455 INFO L481 AbstractCegarLoop]: Abstraction has 8317 states and 38184 transitions. [2020-10-15 23:12:20,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 23:12:20,455 INFO L276 IsEmpty]: Start isEmpty. Operand 8317 states and 38184 transitions. [2020-10-15 23:12:20,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 23:12:20,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:20,456 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:20,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-15 23:12:20,457 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:12:20,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:20,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1389591796, now seen corresponding path program 1 times [2020-10-15 23:12:20,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:20,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713235144] [2020-10-15 23:12:20,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:20,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:20,536 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:12:20,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713235144] [2020-10-15 23:12:20,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688310244] [2020-10-15 23:12:20,536 INFO L95 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 [2020-10-15 23:12:20,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:20,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:12:20,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:12:20,735 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:12:20,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:12:20,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:12:20,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897565201] [2020-10-15 23:12:20,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:12:20,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:20,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:12:20,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:12:20,737 INFO L87 Difference]: Start difference. First operand 8317 states and 38184 transitions. Second operand 16 states. [2020-10-15 23:12:21,333 WARN L193 SmtUtils]: Spent 532.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-10-15 23:12:22,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:22,365 INFO L93 Difference]: Finished difference Result 26969 states and 101544 transitions. [2020-10-15 23:12:22,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:12:22,366 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-15 23:12:22,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:22,453 INFO L225 Difference]: With dead ends: 26969 [2020-10-15 23:12:22,453 INFO L226 Difference]: Without dead ends: 26957 [2020-10-15 23:12:22,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:12:22,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26957 states. [2020-10-15 23:12:22,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26957 to 8204. [2020-10-15 23:12:22,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8204 states. [2020-10-15 23:12:22,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8204 states to 8204 states and 37628 transitions. [2020-10-15 23:12:22,871 INFO L78 Accepts]: Start accepts. Automaton has 8204 states and 37628 transitions. Word has length 21 [2020-10-15 23:12:22,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:22,871 INFO L481 AbstractCegarLoop]: Abstraction has 8204 states and 37628 transitions. [2020-10-15 23:12:22,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:12:22,871 INFO L276 IsEmpty]: Start isEmpty. Operand 8204 states and 37628 transitions. [2020-10-15 23:12:22,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 23:12:22,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:22,872 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:23,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:12:23,073 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:12:23,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:23,073 INFO L82 PathProgramCache]: Analyzing trace with hash 184946636, now seen corresponding path program 2 times [2020-10-15 23:12:23,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:23,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586857984] [2020-10-15 23:12:23,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:23,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:23,134 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 23:12:23,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586857984] [2020-10-15 23:12:23,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193475462] [2020-10-15 23:12:23,135 INFO L93 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 [2020-10-15 23:12:23,205 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 23:12:23,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:12:23,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:12:23,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:12:23,323 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 23:12:23,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:12:23,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:12:23,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707585816] [2020-10-15 23:12:23,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:12:23,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:23,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:12:23,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:12:23,325 INFO L87 Difference]: Start difference. First operand 8204 states and 37628 transitions. Second operand 16 states. [2020-10-15 23:12:24,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:24,302 INFO L93 Difference]: Finished difference Result 26661 states and 100277 transitions. [2020-10-15 23:12:24,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:12:24,302 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-15 23:12:24,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:24,361 INFO L225 Difference]: With dead ends: 26661 [2020-10-15 23:12:24,361 INFO L226 Difference]: Without dead ends: 26645 [2020-10-15 23:12:24,362 INFO L677 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 [2020-10-15 23:12:24,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26645 states. [2020-10-15 23:12:24,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26645 to 8091. [2020-10-15 23:12:24,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8091 states. [2020-10-15 23:12:24,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8091 states to 8091 states and 37076 transitions. [2020-10-15 23:12:24,972 INFO L78 Accepts]: Start accepts. Automaton has 8091 states and 37076 transitions. Word has length 21 [2020-10-15 23:12:24,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:24,972 INFO L481 AbstractCegarLoop]: Abstraction has 8091 states and 37076 transitions. [2020-10-15 23:12:24,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:12:24,972 INFO L276 IsEmpty]: Start isEmpty. Operand 8091 states and 37076 transitions. [2020-10-15 23:12:24,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 23:12:24,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:24,978 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:25,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-10-15 23:12:25,193 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:12:25,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:25,193 INFO L82 PathProgramCache]: Analyzing trace with hash -231570740, now seen corresponding path program 3 times [2020-10-15 23:12:25,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:25,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339355765] [2020-10-15 23:12:25,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:25,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:25,256 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:12:25,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339355765] [2020-10-15 23:12:25,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615412996] [2020-10-15 23:12:25,256 INFO L93 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 [2020-10-15 23:12:25,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 23:12:25,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:12:25,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:12:25,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:12:25,433 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:12:25,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:12:25,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:12:25,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160938417] [2020-10-15 23:12:25,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:12:25,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:25,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:12:25,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:12:25,434 INFO L87 Difference]: Start difference. First operand 8091 states and 37076 transitions. Second operand 16 states. [2020-10-15 23:12:26,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:26,392 INFO L93 Difference]: Finished difference Result 26686 states and 100402 transitions. [2020-10-15 23:12:26,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:12:26,393 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-15 23:12:26,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:26,457 INFO L225 Difference]: With dead ends: 26686 [2020-10-15 23:12:26,458 INFO L226 Difference]: Without dead ends: 26674 [2020-10-15 23:12:26,458 INFO L677 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 [2020-10-15 23:12:26,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26674 states. [2020-10-15 23:12:26,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26674 to 7861. [2020-10-15 23:12:26,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7861 states. [2020-10-15 23:12:26,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7861 states to 7861 states and 36066 transitions. [2020-10-15 23:12:26,832 INFO L78 Accepts]: Start accepts. Automaton has 7861 states and 36066 transitions. Word has length 21 [2020-10-15 23:12:26,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:26,832 INFO L481 AbstractCegarLoop]: Abstraction has 7861 states and 36066 transitions. [2020-10-15 23:12:26,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:12:26,833 INFO L276 IsEmpty]: Start isEmpty. Operand 7861 states and 36066 transitions. [2020-10-15 23:12:26,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 23:12:26,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:26,834 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:27,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:12:27,034 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:12:27,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:27,035 INFO L82 PathProgramCache]: Analyzing trace with hash -168366002, now seen corresponding path program 4 times [2020-10-15 23:12:27,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:27,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513586868] [2020-10-15 23:12:27,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:27,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:27,094 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:12:27,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513586868] [2020-10-15 23:12:27,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126251059] [2020-10-15 23:12:27,095 INFO L93 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 [2020-10-15 23:12:27,170 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 23:12:27,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:12:27,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:12:27,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:12:27,269 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:12:27,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:12:27,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:12:27,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107540930] [2020-10-15 23:12:27,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:12:27,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:27,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:12:27,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:12:27,271 INFO L87 Difference]: Start difference. First operand 7861 states and 36066 transitions. Second operand 16 states. [2020-10-15 23:12:28,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:28,469 INFO L93 Difference]: Finished difference Result 26489 states and 99650 transitions. [2020-10-15 23:12:28,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:12:28,470 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-15 23:12:28,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:28,537 INFO L225 Difference]: With dead ends: 26489 [2020-10-15 23:12:28,537 INFO L226 Difference]: Without dead ends: 26473 [2020-10-15 23:12:28,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:12:28,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26473 states. [2020-10-15 23:12:28,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26473 to 7748. [2020-10-15 23:12:28,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7748 states. [2020-10-15 23:12:28,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7748 states to 7748 states and 35514 transitions. [2020-10-15 23:12:28,899 INFO L78 Accepts]: Start accepts. Automaton has 7748 states and 35514 transitions. Word has length 21 [2020-10-15 23:12:28,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:28,899 INFO L481 AbstractCegarLoop]: Abstraction has 7748 states and 35514 transitions. [2020-10-15 23:12:28,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:12:28,899 INFO L276 IsEmpty]: Start isEmpty. Operand 7748 states and 35514 transitions. [2020-10-15 23:12:28,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 23:12:28,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:28,900 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:29,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-10-15 23:12:29,101 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:12:29,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:29,102 INFO L82 PathProgramCache]: Analyzing trace with hash 210203517, now seen corresponding path program 1 times [2020-10-15 23:12:29,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:29,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448908390] [2020-10-15 23:12:29,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:29,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:29,144 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:12:29,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448908390] [2020-10-15 23:12:29,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:12:29,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 23:12:29,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748481746] [2020-10-15 23:12:29,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 23:12:29,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:29,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 23:12:29,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 23:12:29,146 INFO L87 Difference]: Start difference. First operand 7748 states and 35514 transitions. Second operand 5 states. [2020-10-15 23:12:29,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:29,322 INFO L93 Difference]: Finished difference Result 13251 states and 57501 transitions. [2020-10-15 23:12:29,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 23:12:29,322 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-15 23:12:29,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:29,357 INFO L225 Difference]: With dead ends: 13251 [2020-10-15 23:12:29,357 INFO L226 Difference]: Without dead ends: 13220 [2020-10-15 23:12:29,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:12:29,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13220 states. [2020-10-15 23:12:29,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13220 to 9255. [2020-10-15 23:12:29,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9255 states. [2020-10-15 23:12:29,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9255 states to 9255 states and 42368 transitions. [2020-10-15 23:12:29,623 INFO L78 Accepts]: Start accepts. Automaton has 9255 states and 42368 transitions. Word has length 21 [2020-10-15 23:12:29,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:29,623 INFO L481 AbstractCegarLoop]: Abstraction has 9255 states and 42368 transitions. [2020-10-15 23:12:29,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 23:12:29,623 INFO L276 IsEmpty]: Start isEmpty. Operand 9255 states and 42368 transitions. [2020-10-15 23:12:29,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 23:12:29,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:29,624 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:29,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-15 23:12:29,625 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:12:29,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:29,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1134578958, now seen corresponding path program 5 times [2020-10-15 23:12:29,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:29,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576614858] [2020-10-15 23:12:29,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:29,689 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:12:29,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576614858] [2020-10-15 23:12:29,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:12:29,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:12:29,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912665071] [2020-10-15 23:12:29,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:12:29,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:29,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:12:29,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:12:29,691 INFO L87 Difference]: Start difference. First operand 9255 states and 42368 transitions. Second operand 9 states. [2020-10-15 23:12:30,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:30,549 INFO L93 Difference]: Finished difference Result 29788 states and 113841 transitions. [2020-10-15 23:12:30,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:12:30,549 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-15 23:12:30,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:30,613 INFO L225 Difference]: With dead ends: 29788 [2020-10-15 23:12:30,613 INFO L226 Difference]: Without dead ends: 29770 [2020-10-15 23:12:30,614 INFO L677 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 [2020-10-15 23:12:30,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29770 states. [2020-10-15 23:12:31,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29770 to 8964. [2020-10-15 23:12:31,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8964 states. [2020-10-15 23:12:31,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8964 states to 8964 states and 41031 transitions. [2020-10-15 23:12:31,045 INFO L78 Accepts]: Start accepts. Automaton has 8964 states and 41031 transitions. Word has length 21 [2020-10-15 23:12:31,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:31,045 INFO L481 AbstractCegarLoop]: Abstraction has 8964 states and 41031 transitions. [2020-10-15 23:12:31,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:12:31,046 INFO L276 IsEmpty]: Start isEmpty. Operand 8964 states and 41031 transitions. [2020-10-15 23:12:31,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 23:12:31,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:31,047 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:31,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-15 23:12:31,047 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:12:31,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:31,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1114967118, now seen corresponding path program 6 times [2020-10-15 23:12:31,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:31,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684107601] [2020-10-15 23:12:31,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:31,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:31,117 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:12:31,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684107601] [2020-10-15 23:12:31,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:12:31,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:12:31,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471634968] [2020-10-15 23:12:31,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:12:31,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:31,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:12:31,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:12:31,119 INFO L87 Difference]: Start difference. First operand 8964 states and 41031 transitions. Second operand 9 states. [2020-10-15 23:12:32,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:32,177 INFO L93 Difference]: Finished difference Result 29379 states and 112099 transitions. [2020-10-15 23:12:32,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:12:32,177 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-15 23:12:32,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:32,243 INFO L225 Difference]: With dead ends: 29379 [2020-10-15 23:12:32,243 INFO L226 Difference]: Without dead ends: 29356 [2020-10-15 23:12:32,244 INFO L677 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 [2020-10-15 23:12:32,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29356 states. [2020-10-15 23:12:32,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29356 to 8573. [2020-10-15 23:12:32,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8573 states. [2020-10-15 23:12:32,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8573 states to 8573 states and 39353 transitions. [2020-10-15 23:12:32,694 INFO L78 Accepts]: Start accepts. Automaton has 8573 states and 39353 transitions. Word has length 21 [2020-10-15 23:12:32,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:32,694 INFO L481 AbstractCegarLoop]: Abstraction has 8573 states and 39353 transitions. [2020-10-15 23:12:32,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:12:32,694 INFO L276 IsEmpty]: Start isEmpty. Operand 8573 states and 39353 transitions. [2020-10-15 23:12:32,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-15 23:12:32,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:32,696 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:32,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-15 23:12:32,696 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:12:32,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:32,696 INFO L82 PathProgramCache]: Analyzing trace with hash 715669452, now seen corresponding path program 1 times [2020-10-15 23:12:32,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:32,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35561508] [2020-10-15 23:12:32,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:32,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:32,744 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 23:12:32,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35561508] [2020-10-15 23:12:32,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002765961] [2020-10-15 23:12:32,745 INFO L95 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 [2020-10-15 23:12:32,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:32,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 23:12:32,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:12:32,887 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 23:12:32,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:12:32,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 23:12:32,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232556065] [2020-10-15 23:12:32,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 23:12:32,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:32,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 23:12:32,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 23:12:32,889 INFO L87 Difference]: Start difference. First operand 8573 states and 39353 transitions. Second operand 12 states. [2020-10-15 23:12:33,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:33,302 INFO L93 Difference]: Finished difference Result 19727 states and 80274 transitions. [2020-10-15 23:12:33,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:12:33,303 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-15 23:12:33,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:33,346 INFO L225 Difference]: With dead ends: 19727 [2020-10-15 23:12:33,346 INFO L226 Difference]: Without dead ends: 19703 [2020-10-15 23:12:33,346 INFO L677 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 [2020-10-15 23:12:33,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19703 states. [2020-10-15 23:12:33,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19703 to 8847. [2020-10-15 23:12:33,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8847 states. [2020-10-15 23:12:33,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8847 states to 8847 states and 40495 transitions. [2020-10-15 23:12:33,662 INFO L78 Accepts]: Start accepts. Automaton has 8847 states and 40495 transitions. Word has length 23 [2020-10-15 23:12:33,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:33,662 INFO L481 AbstractCegarLoop]: Abstraction has 8847 states and 40495 transitions. [2020-10-15 23:12:33,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 23:12:33,663 INFO L276 IsEmpty]: Start isEmpty. Operand 8847 states and 40495 transitions. [2020-10-15 23:12:33,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-15 23:12:33,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:33,664 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:33,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-10-15 23:12:33,865 INFO L429 AbstractCegarLoop]: === Iteration 19 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:12:33,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:33,866 INFO L82 PathProgramCache]: Analyzing trace with hash 504272987, now seen corresponding path program 1 times [2020-10-15 23:12:33,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:33,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19308629] [2020-10-15 23:12:33,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:33,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:33,918 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:12:33,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19308629] [2020-10-15 23:12:33,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085398905] [2020-10-15 23:12:33,919 INFO L95 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 [2020-10-15 23:12:33,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:33,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 23:12:33,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:12:34,062 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:12:34,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:12:34,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 23:12:34,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222014681] [2020-10-15 23:12:34,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 23:12:34,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:34,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 23:12:34,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 23:12:34,065 INFO L87 Difference]: Start difference. First operand 8847 states and 40495 transitions. Second operand 12 states. [2020-10-15 23:12:34,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:34,459 INFO L93 Difference]: Finished difference Result 20694 states and 84261 transitions. [2020-10-15 23:12:34,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:12:34,460 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-15 23:12:34,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:34,505 INFO L225 Difference]: With dead ends: 20694 [2020-10-15 23:12:34,505 INFO L226 Difference]: Without dead ends: 20666 [2020-10-15 23:12:34,506 INFO L677 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 [2020-10-15 23:12:34,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20666 states. [2020-10-15 23:12:35,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20666 to 9115. [2020-10-15 23:12:35,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9115 states. [2020-10-15 23:12:35,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9115 states to 9115 states and 41679 transitions. [2020-10-15 23:12:35,061 INFO L78 Accepts]: Start accepts. Automaton has 9115 states and 41679 transitions. Word has length 23 [2020-10-15 23:12:35,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:35,062 INFO L481 AbstractCegarLoop]: Abstraction has 9115 states and 41679 transitions. [2020-10-15 23:12:35,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 23:12:35,062 INFO L276 IsEmpty]: Start isEmpty. Operand 9115 states and 41679 transitions. [2020-10-15 23:12:35,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-15 23:12:35,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:35,065 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:35,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:12:35,279 INFO L429 AbstractCegarLoop]: === Iteration 20 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:12:35,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:35,279 INFO L82 PathProgramCache]: Analyzing trace with hash 591685125, now seen corresponding path program 1 times [2020-10-15 23:12:35,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:35,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101345266] [2020-10-15 23:12:35,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:35,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:35,322 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 23:12:35,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101345266] [2020-10-15 23:12:35,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62191587] [2020-10-15 23:12:35,322 INFO L95 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 [2020-10-15 23:12:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:35,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 23:12:35,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:12:35,456 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 23:12:35,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:12:35,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 23:12:35,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666487427] [2020-10-15 23:12:35,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 23:12:35,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:35,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 23:12:35,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 23:12:35,458 INFO L87 Difference]: Start difference. First operand 9115 states and 41679 transitions. Second operand 12 states. [2020-10-15 23:12:35,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:35,883 INFO L93 Difference]: Finished difference Result 21396 states and 87360 transitions. [2020-10-15 23:12:35,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:12:35,883 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-15 23:12:35,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:35,930 INFO L225 Difference]: With dead ends: 21396 [2020-10-15 23:12:35,930 INFO L226 Difference]: Without dead ends: 21359 [2020-10-15 23:12:35,930 INFO L677 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 [2020-10-15 23:12:36,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21359 states. [2020-10-15 23:12:36,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21359 to 9320. [2020-10-15 23:12:36,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9320 states. [2020-10-15 23:12:36,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9320 states to 9320 states and 42648 transitions. [2020-10-15 23:12:36,270 INFO L78 Accepts]: Start accepts. Automaton has 9320 states and 42648 transitions. Word has length 23 [2020-10-15 23:12:36,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:36,270 INFO L481 AbstractCegarLoop]: Abstraction has 9320 states and 42648 transitions. [2020-10-15 23:12:36,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 23:12:36,270 INFO L276 IsEmpty]: Start isEmpty. Operand 9320 states and 42648 transitions. [2020-10-15 23:12:36,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-15 23:12:36,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:36,273 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:36,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2020-10-15 23:12:36,488 INFO L429 AbstractCegarLoop]: === Iteration 21 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:12:36,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:36,488 INFO L82 PathProgramCache]: Analyzing trace with hash 142124187, now seen corresponding path program 2 times [2020-10-15 23:12:36,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:36,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290214908] [2020-10-15 23:12:36,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:36,534 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:12:36,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290214908] [2020-10-15 23:12:36,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:12:36,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 23:12:36,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529356474] [2020-10-15 23:12:36,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 23:12:36,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:36,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 23:12:36,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:12:36,535 INFO L87 Difference]: Start difference. First operand 9320 states and 42648 transitions. Second operand 7 states. [2020-10-15 23:12:36,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:36,911 INFO L93 Difference]: Finished difference Result 21489 states and 87752 transitions. [2020-10-15 23:12:36,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:12:36,912 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-15 23:12:36,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:36,959 INFO L225 Difference]: With dead ends: 21489 [2020-10-15 23:12:36,959 INFO L226 Difference]: Without dead ends: 21452 [2020-10-15 23:12:36,959 INFO L677 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 [2020-10-15 23:12:37,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21452 states. [2020-10-15 23:12:37,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21452 to 9401. [2020-10-15 23:12:37,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9401 states. [2020-10-15 23:12:37,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9401 states to 9401 states and 43010 transitions. [2020-10-15 23:12:37,304 INFO L78 Accepts]: Start accepts. Automaton has 9401 states and 43010 transitions. Word has length 23 [2020-10-15 23:12:37,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:37,304 INFO L481 AbstractCegarLoop]: Abstraction has 9401 states and 43010 transitions. [2020-10-15 23:12:37,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 23:12:37,305 INFO L276 IsEmpty]: Start isEmpty. Operand 9401 states and 43010 transitions. [2020-10-15 23:12:37,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-15 23:12:37,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:37,307 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:37,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-15 23:12:37,307 INFO L429 AbstractCegarLoop]: === Iteration 22 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:12:37,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:37,308 INFO L82 PathProgramCache]: Analyzing trace with hash 142117429, now seen corresponding path program 2 times [2020-10-15 23:12:37,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:37,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909940479] [2020-10-15 23:12:37,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:37,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:37,361 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:12:37,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909940479] [2020-10-15 23:12:37,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:12:37,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 23:12:37,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313533061] [2020-10-15 23:12:37,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 23:12:37,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:37,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 23:12:37,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:12:37,363 INFO L87 Difference]: Start difference. First operand 9401 states and 43010 transitions. Second operand 7 states. [2020-10-15 23:12:37,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:37,740 INFO L93 Difference]: Finished difference Result 21198 states and 86437 transitions. [2020-10-15 23:12:37,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:12:37,741 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-15 23:12:37,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:37,787 INFO L225 Difference]: With dead ends: 21198 [2020-10-15 23:12:37,787 INFO L226 Difference]: Without dead ends: 21161 [2020-10-15 23:12:37,787 INFO L677 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 [2020-10-15 23:12:37,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21161 states. [2020-10-15 23:12:38,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21161 to 9396. [2020-10-15 23:12:38,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9396 states. [2020-10-15 23:12:38,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9396 states to 9396 states and 42985 transitions. [2020-10-15 23:12:38,129 INFO L78 Accepts]: Start accepts. Automaton has 9396 states and 42985 transitions. Word has length 23 [2020-10-15 23:12:38,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:38,129 INFO L481 AbstractCegarLoop]: Abstraction has 9396 states and 42985 transitions. [2020-10-15 23:12:38,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 23:12:38,129 INFO L276 IsEmpty]: Start isEmpty. Operand 9396 states and 42985 transitions. [2020-10-15 23:12:38,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-15 23:12:38,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:38,131 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:38,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-15 23:12:38,131 INFO L429 AbstractCegarLoop]: === Iteration 23 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:12:38,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:38,132 INFO L82 PathProgramCache]: Analyzing trace with hash 142103758, now seen corresponding path program 2 times [2020-10-15 23:12:38,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:38,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921141351] [2020-10-15 23:12:38,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:38,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:38,184 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:12:38,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921141351] [2020-10-15 23:12:38,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:12:38,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 23:12:38,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696196624] [2020-10-15 23:12:38,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 23:12:38,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:38,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 23:12:38,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:12:38,186 INFO L87 Difference]: Start difference. First operand 9396 states and 42985 transitions. Second operand 7 states. [2020-10-15 23:12:38,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:38,593 INFO L93 Difference]: Finished difference Result 21067 states and 85734 transitions. [2020-10-15 23:12:38,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:12:38,593 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-15 23:12:38,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:38,642 INFO L225 Difference]: With dead ends: 21067 [2020-10-15 23:12:38,642 INFO L226 Difference]: Without dead ends: 21030 [2020-10-15 23:12:38,643 INFO L677 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 [2020-10-15 23:12:38,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21030 states. [2020-10-15 23:12:39,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21030 to 9426. [2020-10-15 23:12:39,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9426 states. [2020-10-15 23:12:39,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9426 states to 9426 states and 43057 transitions. [2020-10-15 23:12:39,150 INFO L78 Accepts]: Start accepts. Automaton has 9426 states and 43057 transitions. Word has length 23 [2020-10-15 23:12:39,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:39,150 INFO L481 AbstractCegarLoop]: Abstraction has 9426 states and 43057 transitions. [2020-10-15 23:12:39,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 23:12:39,151 INFO L276 IsEmpty]: Start isEmpty. Operand 9426 states and 43057 transitions. [2020-10-15 23:12:39,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:12:39,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:39,153 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:39,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-15 23:12:39,154 INFO L429 AbstractCegarLoop]: === Iteration 24 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:12:39,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:39,154 INFO L82 PathProgramCache]: Analyzing trace with hash 925732074, now seen corresponding path program 1 times [2020-10-15 23:12:39,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:39,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078423400] [2020-10-15 23:12:39,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:39,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:39,219 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 23:12:39,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078423400] [2020-10-15 23:12:39,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50315851] [2020-10-15 23:12:39,220 INFO L95 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 [2020-10-15 23:12:39,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:39,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:12:39,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:12:39,425 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 23:12:39,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:12:39,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:12:39,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061967998] [2020-10-15 23:12:39,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:12:39,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:39,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:12:39,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:12:39,427 INFO L87 Difference]: Start difference. First operand 9426 states and 43057 transitions. Second operand 16 states. [2020-10-15 23:12:40,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:40,534 INFO L93 Difference]: Finished difference Result 30145 states and 115754 transitions. [2020-10-15 23:12:40,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:12:40,534 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:12:40,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:40,599 INFO L225 Difference]: With dead ends: 30145 [2020-10-15 23:12:40,599 INFO L226 Difference]: Without dead ends: 30125 [2020-10-15 23:12:40,600 INFO L677 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 [2020-10-15 23:12:40,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30125 states. [2020-10-15 23:12:41,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30125 to 9338. [2020-10-15 23:12:41,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9338 states. [2020-10-15 23:12:41,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9338 states to 9338 states and 42582 transitions. [2020-10-15 23:12:41,034 INFO L78 Accepts]: Start accepts. Automaton has 9338 states and 42582 transitions. Word has length 25 [2020-10-15 23:12:41,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:41,035 INFO L481 AbstractCegarLoop]: Abstraction has 9338 states and 42582 transitions. [2020-10-15 23:12:41,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:12:41,035 INFO L276 IsEmpty]: Start isEmpty. Operand 9338 states and 42582 transitions. [2020-10-15 23:12:41,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:12:41,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:41,037 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:41,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-10-15 23:12:41,238 INFO L429 AbstractCegarLoop]: === Iteration 25 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:12:41,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:41,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1013144212, now seen corresponding path program 1 times [2020-10-15 23:12:41,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:41,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851412216] [2020-10-15 23:12:41,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:41,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:41,299 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 23:12:41,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851412216] [2020-10-15 23:12:41,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662108015] [2020-10-15 23:12:41,300 INFO L95 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 [2020-10-15 23:12:41,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:41,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:12:41,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:12:41,472 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 23:12:41,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:12:41,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:12:41,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528182184] [2020-10-15 23:12:41,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:12:41,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:41,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:12:41,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:12:41,474 INFO L87 Difference]: Start difference. First operand 9338 states and 42582 transitions. Second operand 16 states. [2020-10-15 23:12:42,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:42,425 INFO L93 Difference]: Finished difference Result 29696 states and 113916 transitions. [2020-10-15 23:12:42,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:12:42,425 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:12:42,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:42,489 INFO L225 Difference]: With dead ends: 29696 [2020-10-15 23:12:42,489 INFO L226 Difference]: Without dead ends: 29676 [2020-10-15 23:12:42,489 INFO L677 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 [2020-10-15 23:12:42,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29676 states. [2020-10-15 23:12:42,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29676 to 9291. [2020-10-15 23:12:42,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9291 states. [2020-10-15 23:12:43,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9291 states to 9291 states and 42295 transitions. [2020-10-15 23:12:43,200 INFO L78 Accepts]: Start accepts. Automaton has 9291 states and 42295 transitions. Word has length 25 [2020-10-15 23:12:43,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:43,200 INFO L481 AbstractCegarLoop]: Abstraction has 9291 states and 42295 transitions. [2020-10-15 23:12:43,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:12:43,200 INFO L276 IsEmpty]: Start isEmpty. Operand 9291 states and 42295 transitions. [2020-10-15 23:12:43,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:12:43,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:43,203 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:43,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-10-15 23:12:43,404 INFO L429 AbstractCegarLoop]: === Iteration 26 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:12:43,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:43,405 INFO L82 PathProgramCache]: Analyzing trace with hash 563583274, now seen corresponding path program 2 times [2020-10-15 23:12:43,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:43,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729348317] [2020-10-15 23:12:43,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:43,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:43,475 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 23:12:43,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729348317] [2020-10-15 23:12:43,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499490366] [2020-10-15 23:12:43,476 INFO L93 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 [2020-10-15 23:12:43,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 23:12:43,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:12:43,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:12:43,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:12:43,660 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 23:12:43,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:12:43,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:12:43,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286437138] [2020-10-15 23:12:43,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:12:43,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:43,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:12:43,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:12:43,662 INFO L87 Difference]: Start difference. First operand 9291 states and 42295 transitions. Second operand 16 states. [2020-10-15 23:12:44,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:44,652 INFO L93 Difference]: Finished difference Result 29267 states and 112142 transitions. [2020-10-15 23:12:44,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:12:44,652 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:12:44,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:44,715 INFO L225 Difference]: With dead ends: 29267 [2020-10-15 23:12:44,715 INFO L226 Difference]: Without dead ends: 29245 [2020-10-15 23:12:44,715 INFO L677 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 [2020-10-15 23:12:44,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29245 states. [2020-10-15 23:12:45,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29245 to 9288. [2020-10-15 23:12:45,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9288 states. [2020-10-15 23:12:45,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9288 states to 9288 states and 42242 transitions. [2020-10-15 23:12:45,137 INFO L78 Accepts]: Start accepts. Automaton has 9288 states and 42242 transitions. Word has length 25 [2020-10-15 23:12:45,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:45,138 INFO L481 AbstractCegarLoop]: Abstraction has 9288 states and 42242 transitions. [2020-10-15 23:12:45,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:12:45,138 INFO L276 IsEmpty]: Start isEmpty. Operand 9288 states and 42242 transitions. [2020-10-15 23:12:45,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:12:45,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:45,141 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:45,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-10-15 23:12:45,342 INFO L429 AbstractCegarLoop]: === Iteration 27 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:12:45,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:45,342 INFO L82 PathProgramCache]: Analyzing trace with hash 563576516, now seen corresponding path program 2 times [2020-10-15 23:12:45,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:45,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954383068] [2020-10-15 23:12:45,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:45,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:45,402 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 23:12:45,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954383068] [2020-10-15 23:12:45,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210845332] [2020-10-15 23:12:45,403 INFO L93 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 [2020-10-15 23:12:45,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 23:12:45,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:12:45,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:12:45,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:12:45,595 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 23:12:45,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:12:45,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:12:45,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691964510] [2020-10-15 23:12:45,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:12:45,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:45,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:12:45,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:12:45,597 INFO L87 Difference]: Start difference. First operand 9288 states and 42242 transitions. Second operand 16 states. [2020-10-15 23:12:46,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:46,729 INFO L93 Difference]: Finished difference Result 28920 states and 110796 transitions. [2020-10-15 23:12:46,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:12:46,730 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:12:46,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:46,791 INFO L225 Difference]: With dead ends: 28920 [2020-10-15 23:12:46,791 INFO L226 Difference]: Without dead ends: 28898 [2020-10-15 23:12:46,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:12:46,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28898 states. [2020-10-15 23:12:47,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28898 to 9176. [2020-10-15 23:12:47,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9176 states. [2020-10-15 23:12:47,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9176 states to 9176 states and 41695 transitions. [2020-10-15 23:12:47,209 INFO L78 Accepts]: Start accepts. Automaton has 9176 states and 41695 transitions. Word has length 25 [2020-10-15 23:12:47,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:47,209 INFO L481 AbstractCegarLoop]: Abstraction has 9176 states and 41695 transitions. [2020-10-15 23:12:47,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:12:47,209 INFO L276 IsEmpty]: Start isEmpty. Operand 9176 states and 41695 transitions. [2020-10-15 23:12:47,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:12:47,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:47,212 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:47,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:12:47,413 INFO L429 AbstractCegarLoop]: === Iteration 28 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:12:47,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:47,413 INFO L82 PathProgramCache]: Analyzing trace with hash -2052215638, now seen corresponding path program 3 times [2020-10-15 23:12:47,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:47,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384814689] [2020-10-15 23:12:47,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:47,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:47,489 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-15 23:12:47,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384814689] [2020-10-15 23:12:47,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364952269] [2020-10-15 23:12:47,490 INFO L93 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 [2020-10-15 23:12:47,564 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-15 23:12:47,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:12:47,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:12:47,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:12:47,659 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-15 23:12:47,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:12:47,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:12:47,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913986068] [2020-10-15 23:12:47,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:12:47,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:47,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:12:47,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:12:47,661 INFO L87 Difference]: Start difference. First operand 9176 states and 41695 transitions. Second operand 16 states. [2020-10-15 23:12:48,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:48,626 INFO L93 Difference]: Finished difference Result 29038 states and 111216 transitions. [2020-10-15 23:12:48,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:12:48,627 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:12:48,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:48,693 INFO L225 Difference]: With dead ends: 29038 [2020-10-15 23:12:48,693 INFO L226 Difference]: Without dead ends: 29018 [2020-10-15 23:12:48,694 INFO L677 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 [2020-10-15 23:12:48,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29018 states. [2020-10-15 23:12:49,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29018 to 9000. [2020-10-15 23:12:49,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9000 states. [2020-10-15 23:12:49,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9000 states to 9000 states and 40897 transitions. [2020-10-15 23:12:49,267 INFO L78 Accepts]: Start accepts. Automaton has 9000 states and 40897 transitions. Word has length 25 [2020-10-15 23:12:49,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:49,267 INFO L481 AbstractCegarLoop]: Abstraction has 9000 states and 40897 transitions. [2020-10-15 23:12:49,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:12:49,267 INFO L276 IsEmpty]: Start isEmpty. Operand 9000 states and 40897 transitions. [2020-10-15 23:12:49,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:12:49,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:49,270 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:49,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-10-15 23:12:49,471 INFO L429 AbstractCegarLoop]: === Iteration 29 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:12:49,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:49,472 INFO L82 PathProgramCache]: Analyzing trace with hash -275395741, now seen corresponding path program 1 times [2020-10-15 23:12:49,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:49,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711695248] [2020-10-15 23:12:49,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:49,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:49,538 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 23:12:49,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711695248] [2020-10-15 23:12:49,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836872662] [2020-10-15 23:12:49,538 INFO L95 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 [2020-10-15 23:12:49,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:49,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:12:49,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:12:49,723 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 23:12:49,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:12:49,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:12:49,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774910925] [2020-10-15 23:12:49,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:12:49,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:49,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:12:49,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:12:49,726 INFO L87 Difference]: Start difference. First operand 9000 states and 40897 transitions. Second operand 16 states. [2020-10-15 23:12:50,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:50,841 INFO L93 Difference]: Finished difference Result 29417 states and 113034 transitions. [2020-10-15 23:12:50,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:12:50,842 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:12:50,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:50,905 INFO L225 Difference]: With dead ends: 29417 [2020-10-15 23:12:50,905 INFO L226 Difference]: Without dead ends: 29397 [2020-10-15 23:12:50,905 INFO L677 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 [2020-10-15 23:12:51,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29397 states. [2020-10-15 23:12:51,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29397 to 8990. [2020-10-15 23:12:51,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8990 states. [2020-10-15 23:12:51,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8990 states to 8990 states and 40786 transitions. [2020-10-15 23:12:51,320 INFO L78 Accepts]: Start accepts. Automaton has 8990 states and 40786 transitions. Word has length 25 [2020-10-15 23:12:51,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:51,321 INFO L481 AbstractCegarLoop]: Abstraction has 8990 states and 40786 transitions. [2020-10-15 23:12:51,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:12:51,321 INFO L276 IsEmpty]: Start isEmpty. Operand 8990 states and 40786 transitions. [2020-10-15 23:12:51,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:12:51,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:51,324 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:51,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:12:51,525 INFO L429 AbstractCegarLoop]: === Iteration 30 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:12:51,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:51,525 INFO L82 PathProgramCache]: Analyzing trace with hash -724963437, now seen corresponding path program 2 times [2020-10-15 23:12:51,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:51,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423927994] [2020-10-15 23:12:51,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:51,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:51,588 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:12:51,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423927994] [2020-10-15 23:12:51,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014765855] [2020-10-15 23:12:51,588 INFO L93 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 [2020-10-15 23:12:51,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 23:12:51,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:12:51,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:12:51,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:12:51,825 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:12:51,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:12:51,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:12:51,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705072437] [2020-10-15 23:12:51,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:12:51,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:51,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:12:51,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:12:51,828 INFO L87 Difference]: Start difference. First operand 8990 states and 40786 transitions. Second operand 16 states. [2020-10-15 23:12:52,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:52,911 INFO L93 Difference]: Finished difference Result 29064 states and 111552 transitions. [2020-10-15 23:12:52,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:12:52,912 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:12:52,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:52,974 INFO L225 Difference]: With dead ends: 29064 [2020-10-15 23:12:52,974 INFO L226 Difference]: Without dead ends: 29037 [2020-10-15 23:12:52,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:12:53,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29037 states. [2020-10-15 23:12:53,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29037 to 8953. [2020-10-15 23:12:53,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8953 states. [2020-10-15 23:12:53,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8953 states to 8953 states and 40609 transitions. [2020-10-15 23:12:53,394 INFO L78 Accepts]: Start accepts. Automaton has 8953 states and 40609 transitions. Word has length 25 [2020-10-15 23:12:53,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:53,395 INFO L481 AbstractCegarLoop]: Abstraction has 8953 states and 40609 transitions. [2020-10-15 23:12:53,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:12:53,395 INFO L276 IsEmpty]: Start isEmpty. Operand 8953 states and 40609 transitions. [2020-10-15 23:12:53,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:12:53,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:53,398 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:53,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2020-10-15 23:12:53,599 INFO L429 AbstractCegarLoop]: === Iteration 31 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:12:53,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:53,599 INFO L82 PathProgramCache]: Analyzing trace with hash -724977108, now seen corresponding path program 4 times [2020-10-15 23:12:53,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:53,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897165352] [2020-10-15 23:12:53,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:53,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:53,659 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:12:53,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897165352] [2020-10-15 23:12:53,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44886918] [2020-10-15 23:12:53,660 INFO L93 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 [2020-10-15 23:12:53,731 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 23:12:53,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:12:53,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:12:53,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:12:53,838 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:12:53,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:12:53,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:12:53,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214256013] [2020-10-15 23:12:53,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:12:53,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:53,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:12:53,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:12:53,839 INFO L87 Difference]: Start difference. First operand 8953 states and 40609 transitions. Second operand 16 states. [2020-10-15 23:12:54,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:54,821 INFO L93 Difference]: Finished difference Result 28523 states and 109227 transitions. [2020-10-15 23:12:54,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:12:54,822 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:12:54,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:54,883 INFO L225 Difference]: With dead ends: 28523 [2020-10-15 23:12:54,883 INFO L226 Difference]: Without dead ends: 28501 [2020-10-15 23:12:54,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:12:55,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28501 states. [2020-10-15 23:12:55,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28501 to 8841. [2020-10-15 23:12:55,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8841 states. [2020-10-15 23:12:55,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8841 states to 8841 states and 40062 transitions. [2020-10-15 23:12:55,415 INFO L78 Accepts]: Start accepts. Automaton has 8841 states and 40062 transitions. Word has length 25 [2020-10-15 23:12:55,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:55,416 INFO L481 AbstractCegarLoop]: Abstraction has 8841 states and 40062 transitions. [2020-10-15 23:12:55,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:12:55,416 INFO L276 IsEmpty]: Start isEmpty. Operand 8841 states and 40062 transitions. [2020-10-15 23:12:55,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:12:55,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:55,420 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:55,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:12:55,628 INFO L429 AbstractCegarLoop]: === Iteration 32 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:12:55,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:55,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1969402905, now seen corresponding path program 3 times [2020-10-15 23:12:55,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:55,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641246084] [2020-10-15 23:12:55,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:55,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:55,695 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 23:12:55,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641246084] [2020-10-15 23:12:55,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171771404] [2020-10-15 23:12:55,695 INFO L93 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 [2020-10-15 23:12:55,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 23:12:55,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:12:55,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:12:55,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:12:55,940 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 23:12:55,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:12:55,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:12:55,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135805724] [2020-10-15 23:12:55,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:12:55,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:55,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:12:55,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:12:55,943 INFO L87 Difference]: Start difference. First operand 8841 states and 40062 transitions. Second operand 16 states. [2020-10-15 23:12:57,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:57,112 INFO L93 Difference]: Finished difference Result 28636 states and 109852 transitions. [2020-10-15 23:12:57,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:12:57,113 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:12:57,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:57,174 INFO L225 Difference]: With dead ends: 28636 [2020-10-15 23:12:57,174 INFO L226 Difference]: Without dead ends: 28616 [2020-10-15 23:12:57,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:12:57,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28616 states. [2020-10-15 23:12:57,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28616 to 8702. [2020-10-15 23:12:57,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8702 states. [2020-10-15 23:12:57,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8702 states to 8702 states and 39438 transitions. [2020-10-15 23:12:57,573 INFO L78 Accepts]: Start accepts. Automaton has 8702 states and 39438 transitions. Word has length 25 [2020-10-15 23:12:57,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:57,574 INFO L481 AbstractCegarLoop]: Abstraction has 8702 states and 39438 transitions. [2020-10-15 23:12:57,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:12:57,574 INFO L276 IsEmpty]: Start isEmpty. Operand 8702 states and 39438 transitions. [2020-10-15 23:12:57,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:12:57,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:57,577 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:57,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2020-10-15 23:12:57,783 INFO L429 AbstractCegarLoop]: === Iteration 33 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:12:57,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:57,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1576190868, now seen corresponding path program 3 times [2020-10-15 23:12:57,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:57,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060949894] [2020-10-15 23:12:57,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:57,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:57,842 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 23:12:57,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060949894] [2020-10-15 23:12:57,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705480401] [2020-10-15 23:12:57,843 INFO L93 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 [2020-10-15 23:12:57,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 23:12:57,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:12:57,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:12:57,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:12:58,014 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 23:12:58,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:12:58,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:12:58,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99807153] [2020-10-15 23:12:58,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:12:58,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:58,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:12:58,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:12:58,016 INFO L87 Difference]: Start difference. First operand 8702 states and 39438 transitions. Second operand 16 states. [2020-10-15 23:12:58,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:58,947 INFO L93 Difference]: Finished difference Result 28297 states and 108461 transitions. [2020-10-15 23:12:58,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:12:58,948 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:12:58,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:59,008 INFO L225 Difference]: With dead ends: 28297 [2020-10-15 23:12:59,008 INFO L226 Difference]: Without dead ends: 28277 [2020-10-15 23:12:59,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:12:59,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28277 states. [2020-10-15 23:12:59,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28277 to 8596. [2020-10-15 23:12:59,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8596 states. [2020-10-15 23:12:59,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 38978 transitions. [2020-10-15 23:12:59,403 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 38978 transitions. Word has length 25 [2020-10-15 23:12:59,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:59,404 INFO L481 AbstractCegarLoop]: Abstraction has 8596 states and 38978 transitions. [2020-10-15 23:12:59,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:12:59,404 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 38978 transitions. [2020-10-15 23:12:59,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:12:59,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:59,407 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:59,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:12:59,607 INFO L429 AbstractCegarLoop]: === Iteration 34 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:12:59,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:59,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1673729315, now seen corresponding path program 4 times [2020-10-15 23:12:59,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:59,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213128650] [2020-10-15 23:12:59,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:59,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:59,669 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 23:12:59,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213128650] [2020-10-15 23:12:59,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145516957] [2020-10-15 23:12:59,670 INFO L93 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 [2020-10-15 23:12:59,758 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 23:12:59,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:12:59,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:12:59,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:12:59,888 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 23:12:59,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:12:59,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:12:59,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737024639] [2020-10-15 23:12:59,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:12:59,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:59,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:12:59,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:12:59,890 INFO L87 Difference]: Start difference. First operand 8596 states and 38978 transitions. Second operand 16 states. [2020-10-15 23:13:01,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:13:01,011 INFO L93 Difference]: Finished difference Result 28565 states and 109596 transitions. [2020-10-15 23:13:01,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:13:01,011 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:13:01,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:13:01,072 INFO L225 Difference]: With dead ends: 28565 [2020-10-15 23:13:01,072 INFO L226 Difference]: Without dead ends: 28538 [2020-10-15 23:13:01,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:13:01,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28538 states. [2020-10-15 23:13:01,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28538 to 8563. [2020-10-15 23:13:01,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8563 states. [2020-10-15 23:13:01,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8563 states to 8563 states and 38809 transitions. [2020-10-15 23:13:01,514 INFO L78 Accepts]: Start accepts. Automaton has 8563 states and 38809 transitions. Word has length 25 [2020-10-15 23:13:01,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:13:01,514 INFO L481 AbstractCegarLoop]: Abstraction has 8563 states and 38809 transitions. [2020-10-15 23:13:01,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:13:01,515 INFO L276 IsEmpty]: Start isEmpty. Operand 8563 states and 38809 transitions. [2020-10-15 23:13:01,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:13:01,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:13:01,518 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:13:01,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2020-10-15 23:13:01,806 INFO L429 AbstractCegarLoop]: === Iteration 35 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:13:01,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:13:01,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1673708886, now seen corresponding path program 4 times [2020-10-15 23:13:01,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:13:01,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785031377] [2020-10-15 23:13:01,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:13:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:13:01,884 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 23:13:01,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785031377] [2020-10-15 23:13:01,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952767529] [2020-10-15 23:13:01,885 INFO L93 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 [2020-10-15 23:13:01,989 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 23:13:01,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:13:01,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:13:01,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:13:02,122 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 23:13:02,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:13:02,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:13:02,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772298904] [2020-10-15 23:13:02,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:13:02,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:13:02,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:13:02,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:13:02,124 INFO L87 Difference]: Start difference. First operand 8563 states and 38809 transitions. Second operand 16 states. [2020-10-15 23:13:03,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:13:03,175 INFO L93 Difference]: Finished difference Result 28213 states and 108237 transitions. [2020-10-15 23:13:03,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:13:03,176 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:13:03,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:13:03,235 INFO L225 Difference]: With dead ends: 28213 [2020-10-15 23:13:03,235 INFO L226 Difference]: Without dead ends: 28186 [2020-10-15 23:13:03,236 INFO L677 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 [2020-10-15 23:13:03,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28186 states. [2020-10-15 23:13:03,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28186 to 8421. [2020-10-15 23:13:03,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8421 states. [2020-10-15 23:13:03,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8421 states to 8421 states and 38146 transitions. [2020-10-15 23:13:03,623 INFO L78 Accepts]: Start accepts. Automaton has 8421 states and 38146 transitions. Word has length 25 [2020-10-15 23:13:03,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:13:03,623 INFO L481 AbstractCegarLoop]: Abstraction has 8421 states and 38146 transitions. [2020-10-15 23:13:03,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:13:03,623 INFO L276 IsEmpty]: Start isEmpty. Operand 8421 states and 38146 transitions. [2020-10-15 23:13:03,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:13:03,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:13:03,626 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:13:03,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:13:03,827 INFO L429 AbstractCegarLoop]: === Iteration 36 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:13:03,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:13:03,827 INFO L82 PathProgramCache]: Analyzing trace with hash -857609261, now seen corresponding path program 5 times [2020-10-15 23:13:03,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:13:03,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859316384] [2020-10-15 23:13:03,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:13:03,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:13:03,892 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:13:03,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859316384] [2020-10-15 23:13:03,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:13:03,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:13:03,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106072009] [2020-10-15 23:13:03,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:13:03,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:13:03,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:13:03,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:13:03,893 INFO L87 Difference]: Start difference. First operand 8421 states and 38146 transitions. Second operand 9 states. [2020-10-15 23:13:04,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:13:04,847 INFO L93 Difference]: Finished difference Result 28226 states and 108274 transitions. [2020-10-15 23:13:04,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:13:04,848 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-15 23:13:04,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:13:04,908 INFO L225 Difference]: With dead ends: 28226 [2020-10-15 23:13:04,908 INFO L226 Difference]: Without dead ends: 28206 [2020-10-15 23:13:04,909 INFO L677 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 [2020-10-15 23:13:05,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28206 states. [2020-10-15 23:13:05,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28206 to 8277. [2020-10-15 23:13:05,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8277 states. [2020-10-15 23:13:05,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8277 states to 8277 states and 37487 transitions. [2020-10-15 23:13:05,301 INFO L78 Accepts]: Start accepts. Automaton has 8277 states and 37487 transitions. Word has length 25 [2020-10-15 23:13:05,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:13:05,301 INFO L481 AbstractCegarLoop]: Abstraction has 8277 states and 37487 transitions. [2020-10-15 23:13:05,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:13:05,301 INFO L276 IsEmpty]: Start isEmpty. Operand 8277 states and 37487 transitions. [2020-10-15 23:13:05,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:13:05,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:13:05,304 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:13:05,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-15 23:13:05,305 INFO L429 AbstractCegarLoop]: === Iteration 37 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:13:05,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:13:05,305 INFO L82 PathProgramCache]: Analyzing trace with hash -857622932, now seen corresponding path program 5 times [2020-10-15 23:13:05,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:13:05,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309917188] [2020-10-15 23:13:05,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:13:05,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:13:05,375 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:13:05,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309917188] [2020-10-15 23:13:05,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:13:05,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:13:05,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646325245] [2020-10-15 23:13:05,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:13:05,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:13:05,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:13:05,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:13:05,377 INFO L87 Difference]: Start difference. First operand 8277 states and 37487 transitions. Second operand 9 states. [2020-10-15 23:13:06,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:13:06,270 INFO L93 Difference]: Finished difference Result 27801 states and 106552 transitions. [2020-10-15 23:13:06,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:13:06,271 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-15 23:13:06,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:13:06,330 INFO L225 Difference]: With dead ends: 27801 [2020-10-15 23:13:06,330 INFO L226 Difference]: Without dead ends: 27781 [2020-10-15 23:13:06,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 23:13:06,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27781 states. [2020-10-15 23:13:06,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27781 to 8127. [2020-10-15 23:13:06,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8127 states. [2020-10-15 23:13:06,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8127 states to 8127 states and 36806 transitions. [2020-10-15 23:13:06,717 INFO L78 Accepts]: Start accepts. Automaton has 8127 states and 36806 transitions. Word has length 25 [2020-10-15 23:13:06,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:13:06,717 INFO L481 AbstractCegarLoop]: Abstraction has 8127 states and 36806 transitions. [2020-10-15 23:13:06,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:13:06,717 INFO L276 IsEmpty]: Start isEmpty. Operand 8127 states and 36806 transitions. [2020-10-15 23:13:06,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:13:06,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:13:06,720 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:13:06,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-15 23:13:06,720 INFO L429 AbstractCegarLoop]: === Iteration 38 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:13:06,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:13:06,720 INFO L82 PathProgramCache]: Analyzing trace with hash -864096941, now seen corresponding path program 6 times [2020-10-15 23:13:06,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:13:06,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139030713] [2020-10-15 23:13:06,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:13:06,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:13:06,786 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:13:06,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139030713] [2020-10-15 23:13:06,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:13:06,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:13:06,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921627243] [2020-10-15 23:13:06,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:13:06,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:13:06,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:13:06,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:13:06,788 INFO L87 Difference]: Start difference. First operand 8127 states and 36806 transitions. Second operand 9 states. [2020-10-15 23:13:07,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:13:07,687 INFO L93 Difference]: Finished difference Result 27548 states and 105447 transitions. [2020-10-15 23:13:07,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:13:07,688 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-15 23:13:07,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:13:07,746 INFO L225 Difference]: With dead ends: 27548 [2020-10-15 23:13:07,746 INFO L226 Difference]: Without dead ends: 27521 [2020-10-15 23:13:07,747 INFO L677 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 [2020-10-15 23:13:07,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27521 states. [2020-10-15 23:13:08,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27521 to 7841. [2020-10-15 23:13:08,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7841 states. [2020-10-15 23:13:08,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7841 states to 7841 states and 35578 transitions. [2020-10-15 23:13:08,279 INFO L78 Accepts]: Start accepts. Automaton has 7841 states and 35578 transitions. Word has length 25 [2020-10-15 23:13:08,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:13:08,279 INFO L481 AbstractCegarLoop]: Abstraction has 7841 states and 35578 transitions. [2020-10-15 23:13:08,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:13:08,280 INFO L276 IsEmpty]: Start isEmpty. Operand 7841 states and 35578 transitions. [2020-10-15 23:13:08,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:13:08,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:13:08,282 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:13:08,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-15 23:13:08,283 INFO L429 AbstractCegarLoop]: === Iteration 39 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:13:08,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:13:08,283 INFO L82 PathProgramCache]: Analyzing trace with hash -864117370, now seen corresponding path program 5 times [2020-10-15 23:13:08,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:13:08,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099850434] [2020-10-15 23:13:08,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:13:08,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:13:08,347 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:13:08,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099850434] [2020-10-15 23:13:08,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:13:08,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:13:08,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226904737] [2020-10-15 23:13:08,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:13:08,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:13:08,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:13:08,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:13:08,349 INFO L87 Difference]: Start difference. First operand 7841 states and 35578 transitions. Second operand 9 states. [2020-10-15 23:13:09,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:13:09,240 INFO L93 Difference]: Finished difference Result 27167 states and 103966 transitions. [2020-10-15 23:13:09,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:13:09,241 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-15 23:13:09,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:13:09,298 INFO L225 Difference]: With dead ends: 27167 [2020-10-15 23:13:09,298 INFO L226 Difference]: Without dead ends: 27147 [2020-10-15 23:13:09,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 23:13:09,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27147 states. [2020-10-15 23:13:09,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27147 to 7743. [2020-10-15 23:13:09,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7743 states. [2020-10-15 23:13:09,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7743 states to 7743 states and 35142 transitions. [2020-10-15 23:13:09,671 INFO L78 Accepts]: Start accepts. Automaton has 7743 states and 35142 transitions. Word has length 25 [2020-10-15 23:13:09,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:13:09,671 INFO L481 AbstractCegarLoop]: Abstraction has 7743 states and 35142 transitions. [2020-10-15 23:13:09,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:13:09,671 INFO L276 IsEmpty]: Start isEmpty. Operand 7743 states and 35142 transitions. [2020-10-15 23:13:09,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:13:09,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:13:09,675 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:13:09,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-15 23:13:09,675 INFO L429 AbstractCegarLoop]: === Iteration 40 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:13:09,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:13:09,675 INFO L82 PathProgramCache]: Analyzing trace with hash -877234772, now seen corresponding path program 6 times [2020-10-15 23:13:09,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:13:09,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141112868] [2020-10-15 23:13:09,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:13:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:13:09,766 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:13:09,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141112868] [2020-10-15 23:13:09,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:13:09,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:13:09,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172802648] [2020-10-15 23:13:09,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:13:09,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:13:09,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:13:09,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:13:09,769 INFO L87 Difference]: Start difference. First operand 7743 states and 35142 transitions. Second operand 9 states. [2020-10-15 23:13:10,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:13:10,726 INFO L93 Difference]: Finished difference Result 26955 states and 103085 transitions. [2020-10-15 23:13:10,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:13:10,727 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-15 23:13:10,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:13:10,784 INFO L225 Difference]: With dead ends: 26955 [2020-10-15 23:13:10,784 INFO L226 Difference]: Without dead ends: 26928 [2020-10-15 23:13:10,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 23:13:10,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26928 states. [2020-10-15 23:13:11,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26928 to 7532. [2020-10-15 23:13:11,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7532 states. [2020-10-15 23:13:11,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7532 states to 7532 states and 34256 transitions. [2020-10-15 23:13:11,150 INFO L78 Accepts]: Start accepts. Automaton has 7532 states and 34256 transitions. Word has length 25 [2020-10-15 23:13:11,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:13:11,151 INFO L481 AbstractCegarLoop]: Abstraction has 7532 states and 34256 transitions. [2020-10-15 23:13:11,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:13:11,151 INFO L276 IsEmpty]: Start isEmpty. Operand 7532 states and 34256 transitions. [2020-10-15 23:13:11,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:13:11,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:13:11,154 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:13:11,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-15 23:13:11,154 INFO L429 AbstractCegarLoop]: === Iteration 41 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:13:11,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:13:11,154 INFO L82 PathProgramCache]: Analyzing trace with hash -877241530, now seen corresponding path program 6 times [2020-10-15 23:13:11,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:13:11,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065058123] [2020-10-15 23:13:11,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:13:11,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:13:11,222 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:13:11,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065058123] [2020-10-15 23:13:11,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:13:11,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:13:11,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502047946] [2020-10-15 23:13:11,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:13:11,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:13:11,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:13:11,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:13:11,223 INFO L87 Difference]: Start difference. First operand 7532 states and 34256 transitions. Second operand 9 states. [2020-10-15 23:13:12,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:13:12,239 INFO L93 Difference]: Finished difference Result 26632 states and 101828 transitions. [2020-10-15 23:13:12,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:13:12,240 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-15 23:13:12,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:13:12,296 INFO L225 Difference]: With dead ends: 26632 [2020-10-15 23:13:12,296 INFO L226 Difference]: Without dead ends: 26605 [2020-10-15 23:13:12,296 INFO L677 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 [2020-10-15 23:13:12,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26605 states. [2020-10-15 23:13:12,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26605 to 7269. [2020-10-15 23:13:12,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7269 states. [2020-10-15 23:13:12,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7269 states to 7269 states and 33154 transitions. [2020-10-15 23:13:12,651 INFO L78 Accepts]: Start accepts. Automaton has 7269 states and 33154 transitions. Word has length 25 [2020-10-15 23:13:12,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:13:12,652 INFO L481 AbstractCegarLoop]: Abstraction has 7269 states and 33154 transitions. [2020-10-15 23:13:12,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:13:12,652 INFO L276 IsEmpty]: Start isEmpty. Operand 7269 states and 33154 transitions. [2020-10-15 23:13:12,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:13:12,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:13:12,655 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:13:12,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-10-15 23:13:12,655 INFO L429 AbstractCegarLoop]: === Iteration 42 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:13:12,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:13:12,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1311164244, now seen corresponding path program 1 times [2020-10-15 23:13:12,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:13:12,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020362792] [2020-10-15 23:13:12,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:13:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:13:12,683 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 23:13:12,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020362792] [2020-10-15 23:13:12,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:13:12,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 23:13:12,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542455255] [2020-10-15 23:13:12,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 23:13:12,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:13:12,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 23:13:12,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 23:13:12,686 INFO L87 Difference]: Start difference. First operand 7269 states and 33154 transitions. Second operand 5 states. [2020-10-15 23:13:12,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:13:12,843 INFO L93 Difference]: Finished difference Result 11919 states and 51979 transitions. [2020-10-15 23:13:12,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 23:13:12,843 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-15 23:13:12,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:13:12,869 INFO L225 Difference]: With dead ends: 11919 [2020-10-15 23:13:12,869 INFO L226 Difference]: Without dead ends: 11887 [2020-10-15 23:13:12,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:13:12,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11887 states. [2020-10-15 23:13:13,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11887 to 8560. [2020-10-15 23:13:13,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8560 states. [2020-10-15 23:13:13,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8560 states to 8560 states and 38495 transitions. [2020-10-15 23:13:13,102 INFO L78 Accepts]: Start accepts. Automaton has 8560 states and 38495 transitions. Word has length 25 [2020-10-15 23:13:13,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:13:13,102 INFO L481 AbstractCegarLoop]: Abstraction has 8560 states and 38495 transitions. [2020-10-15 23:13:13,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 23:13:13,102 INFO L276 IsEmpty]: Start isEmpty. Operand 8560 states and 38495 transitions. [2020-10-15 23:13:13,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-15 23:13:13,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:13:13,106 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:13:13,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-10-15 23:13:13,106 INFO L429 AbstractCegarLoop]: === Iteration 43 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:13:13,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:13:13,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1986416772, now seen corresponding path program 1 times [2020-10-15 23:13:13,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:13:13,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599992365] [2020-10-15 23:13:13,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:13:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 23:13:13,112 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 23:13:13,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 23:13:13,117 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 23:13:13,125 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 23:13:13,125 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 23:13:13,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-10-15 23:13:13,125 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-15 23:13:13,126 WARN L371 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 23:13:13,126 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-10-15 23:13:13,144 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,144 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,144 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,144 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,145 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,145 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,145 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,145 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,145 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,145 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,145 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,145 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,146 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,146 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,146 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,146 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,146 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,146 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,146 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,147 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,147 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,147 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,147 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,147 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,147 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,147 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,148 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,148 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,148 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,148 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,148 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,148 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,148 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,148 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,148 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,149 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,149 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,149 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,149 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,149 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,149 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,149 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,150 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,150 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,150 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,150 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,150 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,150 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,151 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,151 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,151 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,151 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,151 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,151 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,151 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,152 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,152 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,152 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,152 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,152 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,152 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,152 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,153 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,153 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,153 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,153 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,153 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,153 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,154 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,154 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,154 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,154 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,154 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,154 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,154 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,155 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,155 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,155 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,155 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,155 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,155 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,155 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,156 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,156 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,156 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,156 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,156 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,156 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,156 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,156 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,156 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,157 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,157 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,157 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,157 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,157 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,157 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,157 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,158 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,158 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,158 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,158 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,158 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,158 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,159 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,159 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,159 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,166 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,166 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,166 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,166 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,167 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,170 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,171 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,171 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,171 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,171 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,174 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,175 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,175 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,175 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,175 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,177 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,177 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,177 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,177 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,177 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,179 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,180 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,180 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,180 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,180 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,183 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,184 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,184 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,184 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,184 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,184 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,185 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,186 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,186 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,186 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,186 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,186 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,187 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,188 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,188 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,189 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,190 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,190 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,191 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,191 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,191 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,192 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,194 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:13:13,195 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-10-15 23:13:13,195 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 23:13:13,195 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 23:13:13,195 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 23:13:13,195 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 23:13:13,195 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 23:13:13,195 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 23:13:13,196 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 23:13:13,196 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 23:13:13,197 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 23:13:13,197 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 156 places, 138 transitions, 396 flow [2020-10-15 23:13:13,197 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 156 places, 138 transitions, 396 flow [2020-10-15 23:13:13,198 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 156 places, 138 transitions, 396 flow [2020-10-15 23:13:13,232 INFO L129 PetriNetUnfolder]: 9/173 cut-off events. [2020-10-15 23:13:13,232 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-10-15 23:13:13,234 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. [2020-10-15 23:13:13,239 INFO L117 LiptonReduction]: Number of co-enabled transitions 2832 [2020-10-15 23:13:15,217 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2020-10-15 23:13:15,571 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-10-15 23:13:15,739 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-15 23:13:15,757 INFO L132 LiptonReduction]: Checked pairs total: 4694 [2020-10-15 23:13:15,757 INFO L134 LiptonReduction]: Total number of compositions: 121 [2020-10-15 23:13:15,758 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 45 transitions, 210 flow [2020-10-15 23:13:17,433 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 18584 states. [2020-10-15 23:13:17,433 INFO L276 IsEmpty]: Start isEmpty. Operand 18584 states. [2020-10-15 23:13:17,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-15 23:13:17,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:13:17,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-15 23:13:17,434 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:13:17,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:13:17,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1298891, now seen corresponding path program 1 times [2020-10-15 23:13:17,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:13:17,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940003845] [2020-10-15 23:13:17,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:13:17,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:13:17,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:13:17,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940003845] [2020-10-15 23:13:17,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:13:17,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 23:13:17,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794154433] [2020-10-15 23:13:17,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 23:13:17,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:13:17,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 23:13:17,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 23:13:17,448 INFO L87 Difference]: Start difference. First operand 18584 states. Second operand 3 states. [2020-10-15 23:13:17,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:13:17,604 INFO L93 Difference]: Finished difference Result 17885 states and 92755 transitions. [2020-10-15 23:13:17,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 23:13:17,604 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-15 23:13:17,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:13:17,650 INFO L225 Difference]: With dead ends: 17885 [2020-10-15 23:13:17,651 INFO L226 Difference]: Without dead ends: 16791 [2020-10-15 23:13:17,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 23:13:18,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16791 states. [2020-10-15 23:13:18,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16791 to 16791. [2020-10-15 23:13:18,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16791 states. [2020-10-15 23:13:18,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16791 states to 16791 states and 86558 transitions. [2020-10-15 23:13:18,398 INFO L78 Accepts]: Start accepts. Automaton has 16791 states and 86558 transitions. Word has length 3 [2020-10-15 23:13:18,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:13:18,398 INFO L481 AbstractCegarLoop]: Abstraction has 16791 states and 86558 transitions. [2020-10-15 23:13:18,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 23:13:18,398 INFO L276 IsEmpty]: Start isEmpty. Operand 16791 states and 86558 transitions. [2020-10-15 23:13:18,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 23:13:18,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:13:18,399 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:13:18,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-10-15 23:13:18,399 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:13:18,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:13:18,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1091574945, now seen corresponding path program 1 times [2020-10-15 23:13:18,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:13:18,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617632265] [2020-10-15 23:13:18,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:13:18,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:13:18,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:13:18,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617632265] [2020-10-15 23:13:18,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:13:18,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 23:13:18,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66442562] [2020-10-15 23:13:18,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 23:13:18,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:13:18,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 23:13:18,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 23:13:18,432 INFO L87 Difference]: Start difference. First operand 16791 states and 86558 transitions. Second operand 5 states. [2020-10-15 23:13:18,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:13:18,695 INFO L93 Difference]: Finished difference Result 30985 states and 150574 transitions. [2020-10-15 23:13:18,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 23:13:18,695 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-15 23:13:18,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:13:18,779 INFO L225 Difference]: With dead ends: 30985 [2020-10-15 23:13:18,780 INFO L226 Difference]: Without dead ends: 30977 [2020-10-15 23:13:18,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:13:19,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30977 states. [2020-10-15 23:13:19,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30977 to 19868. [2020-10-15 23:13:19,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19868 states. [2020-10-15 23:13:19,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19868 states to 19868 states and 103363 transitions. [2020-10-15 23:13:19,781 INFO L78 Accepts]: Start accepts. Automaton has 19868 states and 103363 transitions. Word has length 9 [2020-10-15 23:13:19,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:13:19,781 INFO L481 AbstractCegarLoop]: Abstraction has 19868 states and 103363 transitions. [2020-10-15 23:13:19,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 23:13:19,781 INFO L276 IsEmpty]: Start isEmpty. Operand 19868 states and 103363 transitions. [2020-10-15 23:13:19,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 23:13:19,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:13:19,782 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:13:19,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-10-15 23:13:19,782 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:13:19,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:13:19,783 INFO L82 PathProgramCache]: Analyzing trace with hash -231509072, now seen corresponding path program 1 times [2020-10-15 23:13:19,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:13:19,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232286398] [2020-10-15 23:13:19,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:13:19,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:13:19,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:13:19,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232286398] [2020-10-15 23:13:19,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:13:19,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 23:13:19,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171747170] [2020-10-15 23:13:19,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 23:13:19,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:13:19,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 23:13:19,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 23:13:19,815 INFO L87 Difference]: Start difference. First operand 19868 states and 103363 transitions. Second operand 5 states. [2020-10-15 23:13:20,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:13:20,113 INFO L93 Difference]: Finished difference Result 36296 states and 178836 transitions. [2020-10-15 23:13:20,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 23:13:20,114 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-15 23:13:20,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:13:20,215 INFO L225 Difference]: With dead ends: 36296 [2020-10-15 23:13:20,215 INFO L226 Difference]: Without dead ends: 36280 [2020-10-15 23:13:20,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:13:22,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36280 states. [2020-10-15 23:13:23,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36280 to 23806. [2020-10-15 23:13:23,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23806 states. [2020-10-15 23:13:23,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23806 states to 23806 states and 125455 transitions. [2020-10-15 23:13:23,158 INFO L78 Accepts]: Start accepts. Automaton has 23806 states and 125455 transitions. Word has length 13 [2020-10-15 23:13:23,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:13:23,158 INFO L481 AbstractCegarLoop]: Abstraction has 23806 states and 125455 transitions. [2020-10-15 23:13:23,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 23:13:23,158 INFO L276 IsEmpty]: Start isEmpty. Operand 23806 states and 125455 transitions. [2020-10-15 23:13:23,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 23:13:23,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:13:23,159 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:13:23,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-10-15 23:13:23,159 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:13:23,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:13:23,159 INFO L82 PathProgramCache]: Analyzing trace with hash -588793474, now seen corresponding path program 1 times [2020-10-15 23:13:23,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:13:23,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319256155] [2020-10-15 23:13:23,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:13:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:13:23,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:13:23,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319256155] [2020-10-15 23:13:23,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760022539] [2020-10-15 23:13:23,204 INFO L95 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 [2020-10-15 23:13:23,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:13:23,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 23:13:23,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:13:23,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:13:23,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:13:23,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 23:13:23,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451049101] [2020-10-15 23:13:23,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 23:13:23,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:13:23,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 23:13:23,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 23:13:23,356 INFO L87 Difference]: Start difference. First operand 23806 states and 125455 transitions. Second operand 12 states. [2020-10-15 23:13:24,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:13:24,025 INFO L93 Difference]: Finished difference Result 56720 states and 262685 transitions. [2020-10-15 23:13:24,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:13:24,026 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-15 23:13:24,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:13:24,181 INFO L225 Difference]: With dead ends: 56720 [2020-10-15 23:13:24,182 INFO L226 Difference]: Without dead ends: 56704 [2020-10-15 23:13:24,182 INFO L677 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 [2020-10-15 23:13:24,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56704 states. [2020-10-15 23:13:25,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56704 to 23629. [2020-10-15 23:13:25,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23629 states. [2020-10-15 23:13:25,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23629 states to 23629 states and 124418 transitions. [2020-10-15 23:13:25,615 INFO L78 Accepts]: Start accepts. Automaton has 23629 states and 124418 transitions. Word has length 15 [2020-10-15 23:13:25,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:13:25,615 INFO L481 AbstractCegarLoop]: Abstraction has 23629 states and 124418 transitions. [2020-10-15 23:13:25,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 23:13:25,615 INFO L276 IsEmpty]: Start isEmpty. Operand 23629 states and 124418 transitions. [2020-10-15 23:13:25,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 23:13:25,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:13:25,616 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:13:25,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-10-15 23:13:25,816 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:13:25,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:13:25,817 INFO L82 PathProgramCache]: Analyzing trace with hash 858081470, now seen corresponding path program 2 times [2020-10-15 23:13:25,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:13:25,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026422995] [2020-10-15 23:13:25,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:13:25,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:13:25,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:13:25,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026422995] [2020-10-15 23:13:25,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:13:25,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 23:13:25,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226555840] [2020-10-15 23:13:25,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 23:13:25,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:13:25,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 23:13:25,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:13:25,861 INFO L87 Difference]: Start difference. First operand 23629 states and 124418 transitions. Second operand 7 states. [2020-10-15 23:13:26,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:13:26,482 INFO L93 Difference]: Finished difference Result 58078 states and 269185 transitions. [2020-10-15 23:13:26,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:13:26,482 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-15 23:13:26,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:13:26,667 INFO L225 Difference]: With dead ends: 58078 [2020-10-15 23:13:26,667 INFO L226 Difference]: Without dead ends: 58061 [2020-10-15 23:13:26,667 INFO L677 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 [2020-10-15 23:13:28,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58061 states. [2020-10-15 23:13:28,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58061 to 23109. [2020-10-15 23:13:28,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23109 states. [2020-10-15 23:13:28,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23109 states to 23109 states and 121651 transitions. [2020-10-15 23:13:28,757 INFO L78 Accepts]: Start accepts. Automaton has 23109 states and 121651 transitions. Word has length 15 [2020-10-15 23:13:28,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:13:28,758 INFO L481 AbstractCegarLoop]: Abstraction has 23109 states and 121651 transitions. [2020-10-15 23:13:28,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 23:13:28,758 INFO L276 IsEmpty]: Start isEmpty. Operand 23109 states and 121651 transitions. [2020-10-15 23:13:28,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 23:13:28,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:13:28,758 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:13:28,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2020-10-15 23:13:28,758 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:13:28,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:13:28,759 INFO L82 PathProgramCache]: Analyzing trace with hash 704376303, now seen corresponding path program 1 times [2020-10-15 23:13:28,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:13:28,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471714571] [2020-10-15 23:13:28,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:13:28,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:13:28,786 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:13:28,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471714571] [2020-10-15 23:13:28,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:13:28,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 23:13:28,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452661601] [2020-10-15 23:13:28,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 23:13:28,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:13:28,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 23:13:28,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 23:13:28,787 INFO L87 Difference]: Start difference. First operand 23109 states and 121651 transitions. Second operand 5 states. [2020-10-15 23:13:29,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:13:29,119 INFO L93 Difference]: Finished difference Result 41885 states and 209629 transitions. [2020-10-15 23:13:29,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 23:13:29,119 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-15 23:13:29,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:13:29,238 INFO L225 Difference]: With dead ends: 41885 [2020-10-15 23:13:29,238 INFO L226 Difference]: Without dead ends: 41856 [2020-10-15 23:13:29,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:13:29,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41856 states. [2020-10-15 23:13:30,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41856 to 28237. [2020-10-15 23:13:30,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28237 states. [2020-10-15 23:13:30,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28237 states to 28237 states and 150261 transitions. [2020-10-15 23:13:30,531 INFO L78 Accepts]: Start accepts. Automaton has 28237 states and 150261 transitions. Word has length 17 [2020-10-15 23:13:30,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:13:30,531 INFO L481 AbstractCegarLoop]: Abstraction has 28237 states and 150261 transitions. [2020-10-15 23:13:30,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 23:13:30,531 INFO L276 IsEmpty]: Start isEmpty. Operand 28237 states and 150261 transitions. [2020-10-15 23:13:30,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 23:13:30,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:13:30,532 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:13:30,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2020-10-15 23:13:30,532 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:13:30,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:13:30,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1918672061, now seen corresponding path program 1 times [2020-10-15 23:13:30,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:13:30,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480926642] [2020-10-15 23:13:30,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:13:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:13:30,583 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 23:13:30,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480926642] [2020-10-15 23:13:30,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580860003] [2020-10-15 23:13:30,584 INFO L95 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 [2020-10-15 23:13:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:13:30,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 23:13:30,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:13:30,738 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 23:13:30,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:13:30,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 23:13:30,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964637374] [2020-10-15 23:13:30,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 23:13:30,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:13:30,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 23:13:30,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 23:13:30,740 INFO L87 Difference]: Start difference. First operand 28237 states and 150261 transitions. Second operand 12 states. [2020-10-15 23:13:31,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:13:31,388 INFO L93 Difference]: Finished difference Result 66831 states and 314874 transitions. [2020-10-15 23:13:31,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:13:31,389 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-15 23:13:31,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:13:31,577 INFO L225 Difference]: With dead ends: 66831 [2020-10-15 23:13:31,577 INFO L226 Difference]: Without dead ends: 66807 [2020-10-15 23:13:31,577 INFO L677 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 [2020-10-15 23:13:34,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66807 states. [2020-10-15 23:13:35,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66807 to 28673. [2020-10-15 23:13:35,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28673 states. [2020-10-15 23:13:35,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28673 states to 28673 states and 152375 transitions. [2020-10-15 23:13:35,624 INFO L78 Accepts]: Start accepts. Automaton has 28673 states and 152375 transitions. Word has length 19 [2020-10-15 23:13:35,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:13:35,624 INFO L481 AbstractCegarLoop]: Abstraction has 28673 states and 152375 transitions. [2020-10-15 23:13:35,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 23:13:35,624 INFO L276 IsEmpty]: Start isEmpty. Operand 28673 states and 152375 transitions. [2020-10-15 23:13:35,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 23:13:35,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:13:35,625 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:13:35,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2020-10-15 23:13:35,832 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:13:35,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:13:35,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1064014108, now seen corresponding path program 1 times [2020-10-15 23:13:35,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:13:35,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90870752] [2020-10-15 23:13:35,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:13:35,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:13:35,876 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:13:35,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90870752] [2020-10-15 23:13:35,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518313919] [2020-10-15 23:13:35,877 INFO L95 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 [2020-10-15 23:13:35,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:13:35,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 23:13:35,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:13:36,021 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:13:36,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:13:36,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 23:13:36,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811829882] [2020-10-15 23:13:36,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 23:13:36,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:13:36,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 23:13:36,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 23:13:36,023 INFO L87 Difference]: Start difference. First operand 28673 states and 152375 transitions. Second operand 12 states. [2020-10-15 23:13:36,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:13:36,766 INFO L93 Difference]: Finished difference Result 69484 states and 328264 transitions. [2020-10-15 23:13:36,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:13:36,767 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-15 23:13:36,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:13:36,980 INFO L225 Difference]: With dead ends: 69484 [2020-10-15 23:13:36,980 INFO L226 Difference]: Without dead ends: 69451 [2020-10-15 23:13:36,980 INFO L677 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 [2020-10-15 23:13:37,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69451 states. [2020-10-15 23:13:38,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69451 to 28873. [2020-10-15 23:13:38,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28873 states. [2020-10-15 23:13:38,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28873 states to 28873 states and 153454 transitions. [2020-10-15 23:13:38,708 INFO L78 Accepts]: Start accepts. Automaton has 28873 states and 153454 transitions. Word has length 19 [2020-10-15 23:13:38,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:13:38,708 INFO L481 AbstractCegarLoop]: Abstraction has 28873 states and 153454 transitions. [2020-10-15 23:13:38,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 23:13:38,708 INFO L276 IsEmpty]: Start isEmpty. Operand 28873 states and 153454 transitions. [2020-10-15 23:13:38,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 23:13:38,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:13:38,709 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:13:38,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:13:38,910 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:13:38,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:13:38,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1699177508, now seen corresponding path program 2 times [2020-10-15 23:13:38,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:13:38,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35490707] [2020-10-15 23:13:38,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:13:38,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:13:38,955 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:13:38,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35490707] [2020-10-15 23:13:38,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:13:38,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 23:13:38,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326278251] [2020-10-15 23:13:38,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 23:13:38,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:13:38,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 23:13:38,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:13:38,957 INFO L87 Difference]: Start difference. First operand 28873 states and 153454 transitions. Second operand 7 states. [2020-10-15 23:13:40,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:13:40,368 INFO L93 Difference]: Finished difference Result 70510 states and 333491 transitions. [2020-10-15 23:13:40,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:13:40,369 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-15 23:13:40,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:13:40,587 INFO L225 Difference]: With dead ends: 70510 [2020-10-15 23:13:40,588 INFO L226 Difference]: Without dead ends: 70477 [2020-10-15 23:13:40,588 INFO L677 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 [2020-10-15 23:13:41,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70477 states. [2020-10-15 23:13:42,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70477 to 28942. [2020-10-15 23:13:42,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28942 states. [2020-10-15 23:13:42,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28942 states to 28942 states and 153921 transitions. [2020-10-15 23:13:42,285 INFO L78 Accepts]: Start accepts. Automaton has 28942 states and 153921 transitions. Word has length 19 [2020-10-15 23:13:42,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:13:42,285 INFO L481 AbstractCegarLoop]: Abstraction has 28942 states and 153921 transitions. [2020-10-15 23:13:42,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 23:13:42,285 INFO L276 IsEmpty]: Start isEmpty. Operand 28942 states and 153921 transitions. [2020-10-15 23:13:42,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 23:13:42,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:13:42,286 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:13:42,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2020-10-15 23:13:42,286 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:13:42,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:13:42,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1699205315, now seen corresponding path program 2 times [2020-10-15 23:13:42,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:13:42,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178531533] [2020-10-15 23:13:42,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:13:42,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:13:42,336 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:13:42,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178531533] [2020-10-15 23:13:42,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:13:42,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 23:13:42,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234882168] [2020-10-15 23:13:42,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 23:13:42,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:13:42,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 23:13:42,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:13:42,338 INFO L87 Difference]: Start difference. First operand 28942 states and 153921 transitions. Second operand 7 states. [2020-10-15 23:13:43,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:13:43,002 INFO L93 Difference]: Finished difference Result 70096 states and 331298 transitions. [2020-10-15 23:13:43,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:13:43,002 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-15 23:13:43,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:13:43,201 INFO L225 Difference]: With dead ends: 70096 [2020-10-15 23:13:43,202 INFO L226 Difference]: Without dead ends: 70063 [2020-10-15 23:13:43,202 INFO L677 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 [2020-10-15 23:13:44,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70063 states. [2020-10-15 23:13:44,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70063 to 29094. [2020-10-15 23:13:44,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29094 states. [2020-10-15 23:13:44,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29094 states to 29094 states and 154883 transitions. [2020-10-15 23:13:44,938 INFO L78 Accepts]: Start accepts. Automaton has 29094 states and 154883 transitions. Word has length 19 [2020-10-15 23:13:44,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:13:44,939 INFO L481 AbstractCegarLoop]: Abstraction has 29094 states and 154883 transitions. [2020-10-15 23:13:44,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 23:13:44,939 INFO L276 IsEmpty]: Start isEmpty. Operand 29094 states and 154883 transitions. [2020-10-15 23:13:44,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 23:13:44,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:13:44,940 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:13:44,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2020-10-15 23:13:44,940 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:13:44,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:13:44,940 INFO L82 PathProgramCache]: Analyzing trace with hash -228866966, now seen corresponding path program 1 times [2020-10-15 23:13:44,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:13:44,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776527708] [2020-10-15 23:13:44,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:13:44,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:13:45,007 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:13:45,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776527708] [2020-10-15 23:13:45,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605435605] [2020-10-15 23:13:45,008 INFO L95 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 [2020-10-15 23:13:45,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:13:45,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:13:45,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:13:45,202 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:13:45,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:13:45,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:13:45,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748016497] [2020-10-15 23:13:45,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:13:45,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:13:45,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:13:45,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:13:45,204 INFO L87 Difference]: Start difference. First operand 29094 states and 154883 transitions. Second operand 16 states. [2020-10-15 23:13:47,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:13:47,143 INFO L93 Difference]: Finished difference Result 100731 states and 448596 transitions. [2020-10-15 23:13:47,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:13:47,143 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-15 23:13:47,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:13:47,419 INFO L225 Difference]: With dead ends: 100731 [2020-10-15 23:13:47,420 INFO L226 Difference]: Without dead ends: 100715 [2020-10-15 23:13:47,420 INFO L677 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 [2020-10-15 23:13:48,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100715 states. [2020-10-15 23:13:49,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100715 to 28719. [2020-10-15 23:13:49,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28719 states. [2020-10-15 23:13:49,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28719 states to 28719 states and 152760 transitions. [2020-10-15 23:13:49,619 INFO L78 Accepts]: Start accepts. Automaton has 28719 states and 152760 transitions. Word has length 21 [2020-10-15 23:13:49,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:13:49,619 INFO L481 AbstractCegarLoop]: Abstraction has 28719 states and 152760 transitions. [2020-10-15 23:13:49,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:13:49,619 INFO L276 IsEmpty]: Start isEmpty. Operand 28719 states and 152760 transitions. [2020-10-15 23:13:49,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 23:13:49,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:13:49,620 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:13:49,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2020-10-15 23:13:49,821 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:13:49,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:13:49,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1302908714, now seen corresponding path program 2 times [2020-10-15 23:13:49,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:13:49,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134478048] [2020-10-15 23:13:49,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:13:49,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:13:49,886 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 23:13:49,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134478048] [2020-10-15 23:13:49,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473816004] [2020-10-15 23:13:49,886 INFO L93 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 [2020-10-15 23:13:49,970 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 23:13:49,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:13:49,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:13:49,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:13:50,075 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 23:13:50,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:13:50,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:13:50,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453014177] [2020-10-15 23:13:50,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:13:50,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:13:50,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:13:50,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:13:50,077 INFO L87 Difference]: Start difference. First operand 28719 states and 152760 transitions. Second operand 16 states. [2020-10-15 23:13:51,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:13:51,552 INFO L93 Difference]: Finished difference Result 99876 states and 444348 transitions. [2020-10-15 23:13:51,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:13:51,553 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-15 23:13:51,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:13:51,830 INFO L225 Difference]: With dead ends: 99876 [2020-10-15 23:13:51,831 INFO L226 Difference]: Without dead ends: 99855 [2020-10-15 23:13:51,831 INFO L677 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 [2020-10-15 23:13:52,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99855 states. [2020-10-15 23:13:54,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99855 to 28343. [2020-10-15 23:13:54,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28343 states. [2020-10-15 23:13:54,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28343 states to 28343 states and 150639 transitions. [2020-10-15 23:13:54,551 INFO L78 Accepts]: Start accepts. Automaton has 28343 states and 150639 transitions. Word has length 21 [2020-10-15 23:13:54,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:13:54,552 INFO L481 AbstractCegarLoop]: Abstraction has 28343 states and 150639 transitions. [2020-10-15 23:13:54,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:13:54,552 INFO L276 IsEmpty]: Start isEmpty. Operand 28343 states and 150639 transitions. [2020-10-15 23:13:54,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 23:13:54,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:13:54,553 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:13:54,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:13:54,754 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:13:54,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:13:54,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1149181014, now seen corresponding path program 3 times [2020-10-15 23:13:54,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:13:54,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949878911] [2020-10-15 23:13:54,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:13:54,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:13:54,820 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:13:54,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949878911] [2020-10-15 23:13:54,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176975251] [2020-10-15 23:13:54,821 INFO L93 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 [2020-10-15 23:13:54,903 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 23:13:54,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:13:54,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:13:54,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:13:55,013 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:13:55,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:13:55,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:13:55,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737606119] [2020-10-15 23:13:55,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:13:55,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:13:55,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:13:55,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:13:55,015 INFO L87 Difference]: Start difference. First operand 28343 states and 150639 transitions. Second operand 16 states. [2020-10-15 23:13:56,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:13:56,511 INFO L93 Difference]: Finished difference Result 100071 states and 445291 transitions. [2020-10-15 23:13:56,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:13:56,512 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-15 23:13:56,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:13:56,785 INFO L225 Difference]: With dead ends: 100071 [2020-10-15 23:13:56,786 INFO L226 Difference]: Without dead ends: 100055 [2020-10-15 23:13:56,786 INFO L677 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 [2020-10-15 23:13:57,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100055 states. [2020-10-15 23:13:58,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100055 to 27654. [2020-10-15 23:13:58,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27654 states. [2020-10-15 23:13:58,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27654 states to 27654 states and 147080 transitions. [2020-10-15 23:13:58,959 INFO L78 Accepts]: Start accepts. Automaton has 27654 states and 147080 transitions. Word has length 21 [2020-10-15 23:13:58,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:13:58,959 INFO L481 AbstractCegarLoop]: Abstraction has 27654 states and 147080 transitions. [2020-10-15 23:13:58,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:13:58,960 INFO L276 IsEmpty]: Start isEmpty. Operand 27654 states and 147080 transitions. [2020-10-15 23:13:58,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 23:13:58,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:13:58,961 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:13:59,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2020-10-15 23:13:59,162 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:13:59,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:13:59,162 INFO L82 PathProgramCache]: Analyzing trace with hash 315341610, now seen corresponding path program 4 times [2020-10-15 23:13:59,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:13:59,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954681525] [2020-10-15 23:13:59,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:13:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:13:59,228 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:13:59,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954681525] [2020-10-15 23:13:59,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029648162] [2020-10-15 23:13:59,229 INFO L93 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 [2020-10-15 23:13:59,316 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 23:13:59,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:13:59,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:13:59,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:13:59,438 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:13:59,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:13:59,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:13:59,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973548702] [2020-10-15 23:13:59,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:13:59,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:13:59,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:13:59,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:13:59,440 INFO L87 Difference]: Start difference. First operand 27654 states and 147080 transitions. Second operand 16 states. [2020-10-15 23:14:00,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:14:00,853 INFO L93 Difference]: Finished difference Result 99523 states and 442763 transitions. [2020-10-15 23:14:00,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:14:00,854 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-15 23:14:00,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:14:01,707 INFO L225 Difference]: With dead ends: 99523 [2020-10-15 23:14:01,707 INFO L226 Difference]: Without dead ends: 99502 [2020-10-15 23:14:01,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:14:02,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99502 states. [2020-10-15 23:14:03,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99502 to 27278. [2020-10-15 23:14:03,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27278 states. [2020-10-15 23:14:03,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27278 states to 27278 states and 144959 transitions. [2020-10-15 23:14:03,751 INFO L78 Accepts]: Start accepts. Automaton has 27278 states and 144959 transitions. Word has length 21 [2020-10-15 23:14:03,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:14:03,751 INFO L481 AbstractCegarLoop]: Abstraction has 27278 states and 144959 transitions. [2020-10-15 23:14:03,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:14:03,751 INFO L276 IsEmpty]: Start isEmpty. Operand 27278 states and 144959 transitions. [2020-10-15 23:14:03,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 23:14:03,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:14:03,752 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:14:03,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2020-10-15 23:14:03,953 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:14:03,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:14:03,953 INFO L82 PathProgramCache]: Analyzing trace with hash -822012438, now seen corresponding path program 5 times [2020-10-15 23:14:03,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:14:03,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114346222] [2020-10-15 23:14:03,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:14:03,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:14:04,018 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:14:04,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114346222] [2020-10-15 23:14:04,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:14:04,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:14:04,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188224656] [2020-10-15 23:14:04,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:14:04,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:14:04,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:14:04,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:14:04,020 INFO L87 Difference]: Start difference. First operand 27278 states and 144959 transitions. Second operand 9 states. [2020-10-15 23:14:05,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:14:05,438 INFO L93 Difference]: Finished difference Result 99710 states and 443686 transitions. [2020-10-15 23:14:05,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:14:05,439 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-15 23:14:05,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:14:05,714 INFO L225 Difference]: With dead ends: 99710 [2020-10-15 23:14:05,714 INFO L226 Difference]: Without dead ends: 99694 [2020-10-15 23:14:05,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 23:14:06,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99694 states. [2020-10-15 23:14:07,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99694 to 26597. [2020-10-15 23:14:07,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26597 states. [2020-10-15 23:14:07,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26597 states to 26597 states and 141420 transitions. [2020-10-15 23:14:07,866 INFO L78 Accepts]: Start accepts. Automaton has 26597 states and 141420 transitions. Word has length 21 [2020-10-15 23:14:07,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:14:07,866 INFO L481 AbstractCegarLoop]: Abstraction has 26597 states and 141420 transitions. [2020-10-15 23:14:07,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:14:07,866 INFO L276 IsEmpty]: Start isEmpty. Operand 26597 states and 141420 transitions. [2020-10-15 23:14:07,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 23:14:07,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:14:07,867 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:14:07,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2020-10-15 23:14:07,867 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:14:07,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:14:07,867 INFO L82 PathProgramCache]: Analyzing trace with hash -848707158, now seen corresponding path program 6 times [2020-10-15 23:14:07,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:14:07,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120038589] [2020-10-15 23:14:07,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:14:07,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:14:07,932 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:14:07,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120038589] [2020-10-15 23:14:07,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:14:07,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:14:07,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232038090] [2020-10-15 23:14:07,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:14:07,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:14:07,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:14:07,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:14:07,934 INFO L87 Difference]: Start difference. First operand 26597 states and 141420 transitions. Second operand 9 states. [2020-10-15 23:14:09,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:14:09,816 INFO L93 Difference]: Finished difference Result 98863 states and 439458 transitions. [2020-10-15 23:14:09,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:14:09,817 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-15 23:14:09,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:14:10,108 INFO L225 Difference]: With dead ends: 98863 [2020-10-15 23:14:10,108 INFO L226 Difference]: Without dead ends: 98841 [2020-10-15 23:14:10,108 INFO L677 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 [2020-10-15 23:14:11,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98841 states. [2020-10-15 23:14:12,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98841 to 25744. [2020-10-15 23:14:12,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25744 states. [2020-10-15 23:14:12,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25744 states to 25744 states and 137181 transitions. [2020-10-15 23:14:12,159 INFO L78 Accepts]: Start accepts. Automaton has 25744 states and 137181 transitions. Word has length 21 [2020-10-15 23:14:12,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:14:12,160 INFO L481 AbstractCegarLoop]: Abstraction has 25744 states and 137181 transitions. [2020-10-15 23:14:12,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:14:12,160 INFO L276 IsEmpty]: Start isEmpty. Operand 25744 states and 137181 transitions. [2020-10-15 23:14:12,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 23:14:12,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:14:12,161 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:14:12,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2020-10-15 23:14:12,161 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:14:12,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:14:12,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1818695965, now seen corresponding path program 1 times [2020-10-15 23:14:12,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:14:12,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251681890] [2020-10-15 23:14:12,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:14:12,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:14:12,188 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:14:12,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251681890] [2020-10-15 23:14:12,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:14:12,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 23:14:12,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768671903] [2020-10-15 23:14:12,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 23:14:12,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:14:12,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 23:14:12,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 23:14:12,190 INFO L87 Difference]: Start difference. First operand 25744 states and 137181 transitions. Second operand 5 states. [2020-10-15 23:14:12,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:14:12,538 INFO L93 Difference]: Finished difference Result 46463 states and 236107 transitions. [2020-10-15 23:14:12,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 23:14:12,539 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-15 23:14:12,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:14:12,674 INFO L225 Difference]: With dead ends: 46463 [2020-10-15 23:14:12,674 INFO L226 Difference]: Without dead ends: 46417 [2020-10-15 23:14:12,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:14:13,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46417 states. [2020-10-15 23:14:13,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46417 to 31960. [2020-10-15 23:14:13,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31960 states. [2020-10-15 23:14:14,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31960 states to 31960 states and 171209 transitions. [2020-10-15 23:14:14,074 INFO L78 Accepts]: Start accepts. Automaton has 31960 states and 171209 transitions. Word has length 21 [2020-10-15 23:14:14,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:14:14,074 INFO L481 AbstractCegarLoop]: Abstraction has 31960 states and 171209 transitions. [2020-10-15 23:14:14,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 23:14:14,074 INFO L276 IsEmpty]: Start isEmpty. Operand 31960 states and 171209 transitions. [2020-10-15 23:14:14,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-15 23:14:14,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:14:14,076 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:14:14,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2020-10-15 23:14:14,076 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:14:14,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:14:14,076 INFO L82 PathProgramCache]: Analyzing trace with hash 605532395, now seen corresponding path program 1 times [2020-10-15 23:14:14,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:14:14,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429698925] [2020-10-15 23:14:14,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:14:14,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:14:14,123 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:14:14,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429698925] [2020-10-15 23:14:14,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752694666] [2020-10-15 23:14:14,124 INFO L95 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 [2020-10-15 23:14:14,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:14:14,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 23:14:14,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:14:14,274 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:14:14,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:14:14,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 23:14:14,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506096332] [2020-10-15 23:14:14,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 23:14:14,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:14:14,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 23:14:14,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 23:14:14,276 INFO L87 Difference]: Start difference. First operand 31960 states and 171209 transitions. Second operand 12 states. [2020-10-15 23:14:15,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:14:15,118 INFO L93 Difference]: Finished difference Result 75380 states and 361389 transitions. [2020-10-15 23:14:15,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:14:15,119 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-15 23:14:15,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:14:15,335 INFO L225 Difference]: With dead ends: 75380 [2020-10-15 23:14:15,335 INFO L226 Difference]: Without dead ends: 75344 [2020-10-15 23:14:15,335 INFO L677 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 [2020-10-15 23:14:16,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75344 states. [2020-10-15 23:14:17,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75344 to 32974. [2020-10-15 23:14:17,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32974 states. [2020-10-15 23:14:17,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32974 states to 32974 states and 176363 transitions. [2020-10-15 23:14:17,771 INFO L78 Accepts]: Start accepts. Automaton has 32974 states and 176363 transitions. Word has length 23 [2020-10-15 23:14:17,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:14:17,772 INFO L481 AbstractCegarLoop]: Abstraction has 32974 states and 176363 transitions. [2020-10-15 23:14:17,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 23:14:17,772 INFO L276 IsEmpty]: Start isEmpty. Operand 32974 states and 176363 transitions. [2020-10-15 23:14:17,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-15 23:14:17,773 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:14:17,773 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:14:17,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:14:17,974 INFO L429 AbstractCegarLoop]: === Iteration 19 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:14:17,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:14:17,975 INFO L82 PathProgramCache]: Analyzing trace with hash 768040394, now seen corresponding path program 1 times [2020-10-15 23:14:17,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:14:17,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723392411] [2020-10-15 23:14:17,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:14:17,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:14:18,021 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:14:18,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723392411] [2020-10-15 23:14:18,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565361145] [2020-10-15 23:14:18,022 INFO L95 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 [2020-10-15 23:14:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:14:18,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 23:14:18,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:14:18,178 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:14:18,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:14:18,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 23:14:18,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868525081] [2020-10-15 23:14:18,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 23:14:18,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:14:18,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 23:14:18,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 23:14:18,180 INFO L87 Difference]: Start difference. First operand 32974 states and 176363 transitions. Second operand 12 states. [2020-10-15 23:14:18,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:14:18,931 INFO L93 Difference]: Finished difference Result 79487 states and 381757 transitions. [2020-10-15 23:14:18,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:14:18,931 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-15 23:14:18,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:14:19,165 INFO L225 Difference]: With dead ends: 79487 [2020-10-15 23:14:19,165 INFO L226 Difference]: Without dead ends: 79445 [2020-10-15 23:14:19,165 INFO L677 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 [2020-10-15 23:14:20,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79445 states. [2020-10-15 23:14:21,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79445 to 33981. [2020-10-15 23:14:21,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33981 states. [2020-10-15 23:14:21,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33981 states to 33981 states and 181710 transitions. [2020-10-15 23:14:21,116 INFO L78 Accepts]: Start accepts. Automaton has 33981 states and 181710 transitions. Word has length 23 [2020-10-15 23:14:21,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:14:21,116 INFO L481 AbstractCegarLoop]: Abstraction has 33981 states and 181710 transitions. [2020-10-15 23:14:21,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 23:14:21,116 INFO L276 IsEmpty]: Start isEmpty. Operand 33981 states and 181710 transitions. [2020-10-15 23:14:21,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-15 23:14:21,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:14:21,118 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:14:21,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:14:21,319 INFO L429 AbstractCegarLoop]: === Iteration 20 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:14:21,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:14:21,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1041867770, now seen corresponding path program 1 times [2020-10-15 23:14:21,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:14:21,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772260706] [2020-10-15 23:14:21,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:14:21,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:14:21,369 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:14:21,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772260706] [2020-10-15 23:14:21,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424230054] [2020-10-15 23:14:21,370 INFO L95 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 [2020-10-15 23:14:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:14:21,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 23:14:21,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:14:21,518 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:14:21,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:14:21,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 23:14:21,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393942058] [2020-10-15 23:14:21,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 23:14:21,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:14:21,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 23:14:21,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 23:14:21,520 INFO L87 Difference]: Start difference. First operand 33981 states and 181710 transitions. Second operand 12 states. [2020-10-15 23:14:22,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:14:22,296 INFO L93 Difference]: Finished difference Result 82728 states and 398553 transitions. [2020-10-15 23:14:22,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:14:22,297 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-15 23:14:22,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:14:22,544 INFO L225 Difference]: With dead ends: 82728 [2020-10-15 23:14:22,544 INFO L226 Difference]: Without dead ends: 82673 [2020-10-15 23:14:22,544 INFO L677 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 [2020-10-15 23:14:23,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82673 states. [2020-10-15 23:14:24,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82673 to 34821. [2020-10-15 23:14:24,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34821 states. [2020-10-15 23:14:24,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34821 states to 34821 states and 186422 transitions. [2020-10-15 23:14:24,633 INFO L78 Accepts]: Start accepts. Automaton has 34821 states and 186422 transitions. Word has length 23 [2020-10-15 23:14:24,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:14:24,633 INFO L481 AbstractCegarLoop]: Abstraction has 34821 states and 186422 transitions. [2020-10-15 23:14:24,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 23:14:24,634 INFO L276 IsEmpty]: Start isEmpty. Operand 34821 states and 186422 transitions. [2020-10-15 23:14:24,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-15 23:14:24,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:14:24,636 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:14:24,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:14:24,836 INFO L429 AbstractCegarLoop]: === Iteration 21 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:14:24,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:14:24,837 INFO L82 PathProgramCache]: Analyzing trace with hash -284839030, now seen corresponding path program 2 times [2020-10-15 23:14:24,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:14:24,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708190832] [2020-10-15 23:14:24,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:14:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:14:24,884 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:14:24,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708190832] [2020-10-15 23:14:24,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:14:24,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 23:14:24,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913409424] [2020-10-15 23:14:24,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 23:14:24,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:14:24,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 23:14:24,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:14:24,886 INFO L87 Difference]: Start difference. First operand 34821 states and 186422 transitions. Second operand 7 states. [2020-10-15 23:14:25,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:14:25,647 INFO L93 Difference]: Finished difference Result 83507 states and 402693 transitions. [2020-10-15 23:14:25,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:14:25,648 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-15 23:14:25,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:14:26,462 INFO L225 Difference]: With dead ends: 83507 [2020-10-15 23:14:26,462 INFO L226 Difference]: Without dead ends: 83452 [2020-10-15 23:14:26,462 INFO L677 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 [2020-10-15 23:14:27,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83452 states. [2020-10-15 23:14:28,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83452 to 35694. [2020-10-15 23:14:28,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35694 states. [2020-10-15 23:14:28,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35694 states to 35694 states and 191145 transitions. [2020-10-15 23:14:28,456 INFO L78 Accepts]: Start accepts. Automaton has 35694 states and 191145 transitions. Word has length 23 [2020-10-15 23:14:28,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:14:28,456 INFO L481 AbstractCegarLoop]: Abstraction has 35694 states and 191145 transitions. [2020-10-15 23:14:28,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 23:14:28,457 INFO L276 IsEmpty]: Start isEmpty. Operand 35694 states and 191145 transitions. [2020-10-15 23:14:28,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-15 23:14:28,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:14:28,459 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:14:28,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2020-10-15 23:14:28,459 INFO L429 AbstractCegarLoop]: === Iteration 22 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:14:28,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:14:28,459 INFO L82 PathProgramCache]: Analyzing trace with hash -284850438, now seen corresponding path program 2 times [2020-10-15 23:14:28,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:14:28,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27876070] [2020-10-15 23:14:28,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:14:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:14:28,502 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:14:28,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27876070] [2020-10-15 23:14:28,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:14:28,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 23:14:28,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669906716] [2020-10-15 23:14:28,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 23:14:28,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:14:28,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 23:14:28,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:14:28,503 INFO L87 Difference]: Start difference. First operand 35694 states and 191145 transitions. Second operand 7 states. [2020-10-15 23:14:29,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:14:29,297 INFO L93 Difference]: Finished difference Result 83523 states and 402462 transitions. [2020-10-15 23:14:29,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:14:29,298 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-15 23:14:29,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:14:29,548 INFO L225 Difference]: With dead ends: 83523 [2020-10-15 23:14:29,548 INFO L226 Difference]: Without dead ends: 83468 [2020-10-15 23:14:29,549 INFO L677 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 [2020-10-15 23:14:30,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83468 states. [2020-10-15 23:14:31,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83468 to 36306. [2020-10-15 23:14:31,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36306 states. [2020-10-15 23:14:31,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36306 states to 36306 states and 194552 transitions. [2020-10-15 23:14:31,589 INFO L78 Accepts]: Start accepts. Automaton has 36306 states and 194552 transitions. Word has length 23 [2020-10-15 23:14:31,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:14:31,590 INFO L481 AbstractCegarLoop]: Abstraction has 36306 states and 194552 transitions. [2020-10-15 23:14:31,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 23:14:31,590 INFO L276 IsEmpty]: Start isEmpty. Operand 36306 states and 194552 transitions. [2020-10-15 23:14:31,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-15 23:14:31,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:14:31,592 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:14:31,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2020-10-15 23:14:31,592 INFO L429 AbstractCegarLoop]: === Iteration 23 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:14:31,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:14:31,592 INFO L82 PathProgramCache]: Analyzing trace with hash -284866837, now seen corresponding path program 2 times [2020-10-15 23:14:31,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:14:31,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685359230] [2020-10-15 23:14:31,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:14:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:14:31,639 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:14:31,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685359230] [2020-10-15 23:14:31,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:14:31,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 23:14:31,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868852330] [2020-10-15 23:14:31,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 23:14:31,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:14:31,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 23:14:31,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:14:31,641 INFO L87 Difference]: Start difference. First operand 36306 states and 194552 transitions. Second operand 7 states. [2020-10-15 23:14:32,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:14:32,382 INFO L93 Difference]: Finished difference Result 83918 states and 404136 transitions. [2020-10-15 23:14:32,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:14:32,382 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-15 23:14:32,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:14:32,627 INFO L225 Difference]: With dead ends: 83918 [2020-10-15 23:14:32,627 INFO L226 Difference]: Without dead ends: 83863 [2020-10-15 23:14:32,627 INFO L677 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 [2020-10-15 23:14:33,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83863 states. [2020-10-15 23:14:35,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83863 to 37062. [2020-10-15 23:14:35,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37062 states. [2020-10-15 23:14:35,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37062 states to 37062 states and 198528 transitions. [2020-10-15 23:14:35,345 INFO L78 Accepts]: Start accepts. Automaton has 37062 states and 198528 transitions. Word has length 23 [2020-10-15 23:14:35,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:14:35,345 INFO L481 AbstractCegarLoop]: Abstraction has 37062 states and 198528 transitions. [2020-10-15 23:14:35,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 23:14:35,345 INFO L276 IsEmpty]: Start isEmpty. Operand 37062 states and 198528 transitions. [2020-10-15 23:14:35,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:14:35,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:14:35,348 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:14:35,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2020-10-15 23:14:35,348 INFO L429 AbstractCegarLoop]: === Iteration 24 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:14:35,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:14:35,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1146013160, now seen corresponding path program 1 times [2020-10-15 23:14:35,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:14:35,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188851988] [2020-10-15 23:14:35,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:14:35,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:14:35,419 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 23:14:35,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188851988] [2020-10-15 23:14:35,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608204495] [2020-10-15 23:14:35,419 INFO L95 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 [2020-10-15 23:14:35,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:14:35,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:14:35,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:14:35,613 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 23:14:35,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:14:35,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:14:35,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991354137] [2020-10-15 23:14:35,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:14:35,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:14:35,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:14:35,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:14:35,615 INFO L87 Difference]: Start difference. First operand 37062 states and 198528 transitions. Second operand 16 states. [2020-10-15 23:14:37,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:14:37,378 INFO L93 Difference]: Finished difference Result 122892 states and 561130 transitions. [2020-10-15 23:14:37,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:14:37,379 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:14:37,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:14:37,724 INFO L225 Difference]: With dead ends: 122892 [2020-10-15 23:14:37,724 INFO L226 Difference]: Without dead ends: 122862 [2020-10-15 23:14:37,724 INFO L677 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 [2020-10-15 23:14:38,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122862 states. [2020-10-15 23:14:40,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122862 to 36727. [2020-10-15 23:14:40,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36727 states. [2020-10-15 23:14:40,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36727 states to 36727 states and 196466 transitions. [2020-10-15 23:14:40,421 INFO L78 Accepts]: Start accepts. Automaton has 36727 states and 196466 transitions. Word has length 25 [2020-10-15 23:14:40,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:14:40,421 INFO L481 AbstractCegarLoop]: Abstraction has 36727 states and 196466 transitions. [2020-10-15 23:14:40,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:14:40,421 INFO L276 IsEmpty]: Start isEmpty. Operand 36727 states and 196466 transitions. [2020-10-15 23:14:40,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:14:40,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:14:40,424 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:14:40,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2020-10-15 23:14:40,625 INFO L429 AbstractCegarLoop]: === Iteration 25 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:14:40,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:14:40,625 INFO L82 PathProgramCache]: Analyzing trace with hash -872185784, now seen corresponding path program 1 times [2020-10-15 23:14:40,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:14:40,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261704649] [2020-10-15 23:14:40,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:14:40,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:14:40,695 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 23:14:40,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261704649] [2020-10-15 23:14:40,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499221347] [2020-10-15 23:14:40,696 INFO L95 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 [2020-10-15 23:14:40,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:14:40,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:14:40,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:14:40,888 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 23:14:40,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:14:40,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:14:40,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421038309] [2020-10-15 23:14:40,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:14:40,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:14:40,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:14:40,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:14:40,890 INFO L87 Difference]: Start difference. First operand 36727 states and 196466 transitions. Second operand 16 states. [2020-10-15 23:14:42,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:14:42,670 INFO L93 Difference]: Finished difference Result 121590 states and 554657 transitions. [2020-10-15 23:14:42,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:14:42,671 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:14:42,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:14:43,016 INFO L225 Difference]: With dead ends: 121590 [2020-10-15 23:14:43,016 INFO L226 Difference]: Without dead ends: 121560 [2020-10-15 23:14:43,017 INFO L677 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 [2020-10-15 23:14:44,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121560 states. [2020-10-15 23:14:46,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121560 to 36513. [2020-10-15 23:14:46,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36513 states. [2020-10-15 23:14:46,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36513 states to 36513 states and 195090 transitions. [2020-10-15 23:14:46,369 INFO L78 Accepts]: Start accepts. Automaton has 36513 states and 195090 transitions. Word has length 25 [2020-10-15 23:14:46,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:14:46,369 INFO L481 AbstractCegarLoop]: Abstraction has 36513 states and 195090 transitions. [2020-10-15 23:14:46,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:14:46,369 INFO L276 IsEmpty]: Start isEmpty. Operand 36513 states and 195090 transitions. [2020-10-15 23:14:46,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:14:46,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:14:46,373 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:14:46,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:14:46,580 INFO L429 AbstractCegarLoop]: === Iteration 26 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:14:46,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:14:46,580 INFO L82 PathProgramCache]: Analyzing trace with hash 2096074712, now seen corresponding path program 2 times [2020-10-15 23:14:46,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:14:46,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618649974] [2020-10-15 23:14:46,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:14:46,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:14:46,654 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:14:46,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618649974] [2020-10-15 23:14:46,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213223849] [2020-10-15 23:14:46,654 INFO L93 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 [2020-10-15 23:14:46,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 23:14:46,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:14:46,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:14:46,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:14:46,852 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:14:46,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:14:46,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:14:46,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554960375] [2020-10-15 23:14:46,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:14:46,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:14:46,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:14:46,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:14:46,854 INFO L87 Difference]: Start difference. First operand 36513 states and 195090 transitions. Second operand 16 states. [2020-10-15 23:14:48,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:14:48,429 INFO L93 Difference]: Finished difference Result 120395 states and 548664 transitions. [2020-10-15 23:14:48,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:14:48,430 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:14:48,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:14:48,769 INFO L225 Difference]: With dead ends: 120395 [2020-10-15 23:14:48,769 INFO L226 Difference]: Without dead ends: 120362 [2020-10-15 23:14:48,769 INFO L677 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 [2020-10-15 23:14:49,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120362 states. [2020-10-15 23:14:51,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120362 to 36444. [2020-10-15 23:14:51,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36444 states. [2020-10-15 23:14:51,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36444 states to 36444 states and 194571 transitions. [2020-10-15 23:14:51,423 INFO L78 Accepts]: Start accepts. Automaton has 36444 states and 194571 transitions. Word has length 25 [2020-10-15 23:14:51,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:14:51,423 INFO L481 AbstractCegarLoop]: Abstraction has 36444 states and 194571 transitions. [2020-10-15 23:14:51,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:14:51,423 INFO L276 IsEmpty]: Start isEmpty. Operand 36444 states and 194571 transitions. [2020-10-15 23:14:51,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:14:51,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:14:51,425 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:14:51,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-10-15 23:14:51,626 INFO L429 AbstractCegarLoop]: === Iteration 27 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:14:51,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:14:51,627 INFO L82 PathProgramCache]: Analyzing trace with hash 2096063304, now seen corresponding path program 2 times [2020-10-15 23:14:51,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:14:51,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893451014] [2020-10-15 23:14:51,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:14:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:14:51,693 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:14:51,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893451014] [2020-10-15 23:14:51,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053082593] [2020-10-15 23:14:51,693 INFO L93 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 [2020-10-15 23:14:51,778 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 23:14:51,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:14:51,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:14:51,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:14:51,883 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:14:51,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:14:51,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:14:51,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629498377] [2020-10-15 23:14:51,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:14:51,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:14:51,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:14:51,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:14:51,885 INFO L87 Difference]: Start difference. First operand 36444 states and 194571 transitions. Second operand 16 states. [2020-10-15 23:14:53,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:14:53,542 INFO L93 Difference]: Finished difference Result 119346 states and 543724 transitions. [2020-10-15 23:14:53,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:14:53,542 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:14:53,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:14:53,881 INFO L225 Difference]: With dead ends: 119346 [2020-10-15 23:14:53,881 INFO L226 Difference]: Without dead ends: 119313 [2020-10-15 23:14:53,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:14:55,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119313 states. [2020-10-15 23:14:56,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119313 to 36040. [2020-10-15 23:14:56,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36040 states. [2020-10-15 23:14:57,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36040 states to 36040 states and 192287 transitions. [2020-10-15 23:14:57,068 INFO L78 Accepts]: Start accepts. Automaton has 36040 states and 192287 transitions. Word has length 25 [2020-10-15 23:14:57,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:14:57,068 INFO L481 AbstractCegarLoop]: Abstraction has 36040 states and 192287 transitions. [2020-10-15 23:14:57,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:14:57,068 INFO L276 IsEmpty]: Start isEmpty. Operand 36040 states and 192287 transitions. [2020-10-15 23:14:57,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:14:57,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:14:57,071 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:14:57,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2020-10-15 23:14:57,272 INFO L429 AbstractCegarLoop]: === Iteration 28 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:14:57,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:14:57,272 INFO L82 PathProgramCache]: Analyzing trace with hash 582269272, now seen corresponding path program 3 times [2020-10-15 23:14:57,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:14:57,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171540218] [2020-10-15 23:14:57,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:14:57,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:14:57,340 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:14:57,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171540218] [2020-10-15 23:14:57,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870479016] [2020-10-15 23:14:57,341 INFO L93 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 [2020-10-15 23:14:57,427 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-15 23:14:57,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:14:57,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:14:57,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:14:57,542 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:14:57,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:14:57,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:14:57,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941366324] [2020-10-15 23:14:57,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:14:57,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:14:57,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:14:57,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:14:57,544 INFO L87 Difference]: Start difference. First operand 36040 states and 192287 transitions. Second operand 16 states. [2020-10-15 23:14:59,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:14:59,293 INFO L93 Difference]: Finished difference Result 119770 states and 545635 transitions. [2020-10-15 23:14:59,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:14:59,293 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:14:59,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:14:59,630 INFO L225 Difference]: With dead ends: 119770 [2020-10-15 23:14:59,630 INFO L226 Difference]: Without dead ends: 119740 [2020-10-15 23:14:59,630 INFO L677 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 [2020-10-15 23:15:00,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119740 states. [2020-10-15 23:15:02,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119740 to 35471. [2020-10-15 23:15:02,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35471 states. [2020-10-15 23:15:02,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35471 states to 35471 states and 189238 transitions. [2020-10-15 23:15:02,263 INFO L78 Accepts]: Start accepts. Automaton has 35471 states and 189238 transitions. Word has length 25 [2020-10-15 23:15:02,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:15:02,263 INFO L481 AbstractCegarLoop]: Abstraction has 35471 states and 189238 transitions. [2020-10-15 23:15:02,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:15:02,263 INFO L276 IsEmpty]: Start isEmpty. Operand 35471 states and 189238 transitions. [2020-10-15 23:15:02,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:15:02,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:15:02,265 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:15:02,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-10-15 23:15:02,466 INFO L429 AbstractCegarLoop]: === Iteration 29 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:15:02,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:15:02,466 INFO L82 PathProgramCache]: Analyzing trace with hash 679178599, now seen corresponding path program 1 times [2020-10-15 23:15:02,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:15:02,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079088991] [2020-10-15 23:15:02,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:15:02,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:15:02,533 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:15:02,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079088991] [2020-10-15 23:15:02,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6743436] [2020-10-15 23:15:02,534 INFO L95 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 [2020-10-15 23:15:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:15:02,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:15:02,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:15:02,731 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:15:02,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:15:02,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:15:02,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041540964] [2020-10-15 23:15:02,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:15:02,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:15:02,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:15:02,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:15:02,733 INFO L87 Difference]: Start difference. First operand 35471 states and 189238 transitions. Second operand 16 states. [2020-10-15 23:15:04,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:15:04,374 INFO L93 Difference]: Finished difference Result 121131 states and 553230 transitions. [2020-10-15 23:15:04,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:15:04,374 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:15:04,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:15:04,721 INFO L225 Difference]: With dead ends: 121131 [2020-10-15 23:15:04,722 INFO L226 Difference]: Without dead ends: 121101 [2020-10-15 23:15:04,722 INFO L677 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 [2020-10-15 23:15:06,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121101 states. [2020-10-15 23:15:07,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121101 to 35374. [2020-10-15 23:15:07,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35374 states. [2020-10-15 23:15:07,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35374 states to 35374 states and 188534 transitions. [2020-10-15 23:15:07,860 INFO L78 Accepts]: Start accepts. Automaton has 35374 states and 188534 transitions. Word has length 25 [2020-10-15 23:15:07,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:15:07,860 INFO L481 AbstractCegarLoop]: Abstraction has 35374 states and 188534 transitions. [2020-10-15 23:15:07,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:15:07,861 INFO L276 IsEmpty]: Start isEmpty. Operand 35374 states and 188534 transitions. [2020-10-15 23:15:07,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:15:07,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:15:07,863 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:15:08,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-10-15 23:15:08,064 INFO L429 AbstractCegarLoop]: === Iteration 30 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:15:08,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:15:08,064 INFO L82 PathProgramCache]: Analyzing trace with hash -647539609, now seen corresponding path program 2 times [2020-10-15 23:15:08,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:15:08,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729438119] [2020-10-15 23:15:08,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:15:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:15:08,137 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:15:08,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729438119] [2020-10-15 23:15:08,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594193244] [2020-10-15 23:15:08,137 INFO L93 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 [2020-10-15 23:15:08,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 23:15:08,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:15:08,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:15:08,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:15:08,352 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:15:08,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:15:08,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:15:08,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363833433] [2020-10-15 23:15:08,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:15:08,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:15:08,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:15:08,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:15:08,354 INFO L87 Difference]: Start difference. First operand 35374 states and 188534 transitions. Second operand 16 states. [2020-10-15 23:15:09,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:15:09,983 INFO L93 Difference]: Finished difference Result 120194 states and 548412 transitions. [2020-10-15 23:15:09,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:15:09,983 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:15:09,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:15:10,328 INFO L225 Difference]: With dead ends: 120194 [2020-10-15 23:15:10,328 INFO L226 Difference]: Without dead ends: 120154 [2020-10-15 23:15:10,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:15:11,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120154 states. [2020-10-15 23:15:12,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120154 to 35219. [2020-10-15 23:15:12,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35219 states. [2020-10-15 23:15:12,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35219 states to 35219 states and 187630 transitions. [2020-10-15 23:15:12,905 INFO L78 Accepts]: Start accepts. Automaton has 35219 states and 187630 transitions. Word has length 25 [2020-10-15 23:15:12,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:15:12,905 INFO L481 AbstractCegarLoop]: Abstraction has 35219 states and 187630 transitions. [2020-10-15 23:15:12,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:15:12,905 INFO L276 IsEmpty]: Start isEmpty. Operand 35219 states and 187630 transitions. [2020-10-15 23:15:12,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:15:12,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:15:12,908 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:15:13,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:15:13,108 INFO L429 AbstractCegarLoop]: === Iteration 31 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:15:13,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:15:13,109 INFO L82 PathProgramCache]: Analyzing trace with hash -647556008, now seen corresponding path program 4 times [2020-10-15 23:15:13,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:15:13,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729712908] [2020-10-15 23:15:13,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:15:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:15:13,177 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:15:13,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729712908] [2020-10-15 23:15:13,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536013798] [2020-10-15 23:15:13,178 INFO L93 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 [2020-10-15 23:15:13,265 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 23:15:13,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:15:13,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:15:13,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:15:13,377 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:15:13,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:15:13,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:15:13,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746528526] [2020-10-15 23:15:13,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:15:13,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:15:13,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:15:13,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:15:13,379 INFO L87 Difference]: Start difference. First operand 35219 states and 187630 transitions. Second operand 16 states. [2020-10-15 23:15:14,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:15:14,968 INFO L93 Difference]: Finished difference Result 118559 states and 539905 transitions. [2020-10-15 23:15:14,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:15:14,969 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:15:14,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:15:15,345 INFO L225 Difference]: With dead ends: 118559 [2020-10-15 23:15:15,345 INFO L226 Difference]: Without dead ends: 118526 [2020-10-15 23:15:15,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:15:17,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118526 states. [2020-10-15 23:15:18,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118526 to 34815. [2020-10-15 23:15:18,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34815 states. [2020-10-15 23:15:18,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34815 states to 34815 states and 185346 transitions. [2020-10-15 23:15:18,377 INFO L78 Accepts]: Start accepts. Automaton has 34815 states and 185346 transitions. Word has length 25 [2020-10-15 23:15:18,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:15:18,377 INFO L481 AbstractCegarLoop]: Abstraction has 34815 states and 185346 transitions. [2020-10-15 23:15:18,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:15:18,377 INFO L276 IsEmpty]: Start isEmpty. Operand 34815 states and 185346 transitions. [2020-10-15 23:15:18,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:15:18,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:15:18,380 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:15:18,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2020-10-15 23:15:18,587 INFO L429 AbstractCegarLoop]: === Iteration 32 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:15:18,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:15:18,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1056609241, now seen corresponding path program 3 times [2020-10-15 23:15:18,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:15:18,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341289670] [2020-10-15 23:15:18,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:15:18,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:15:18,655 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:15:18,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341289670] [2020-10-15 23:15:18,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773762993] [2020-10-15 23:15:18,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:15:18,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 23:15:18,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:15:18,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:15:18,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:15:18,848 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:15:18,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:15:18,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:15:18,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981580252] [2020-10-15 23:15:18,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:15:18,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:15:18,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:15:18,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:15:18,849 INFO L87 Difference]: Start difference. First operand 34815 states and 185346 transitions. Second operand 16 states. [2020-10-15 23:15:20,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:15:20,514 INFO L93 Difference]: Finished difference Result 118955 states and 542533 transitions. [2020-10-15 23:15:20,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:15:20,514 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:15:20,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:15:20,858 INFO L225 Difference]: With dead ends: 118955 [2020-10-15 23:15:20,858 INFO L226 Difference]: Without dead ends: 118925 [2020-10-15 23:15:20,858 INFO L677 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 [2020-10-15 23:15:22,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118925 states. [2020-10-15 23:15:23,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118925 to 34363. [2020-10-15 23:15:23,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34363 states. [2020-10-15 23:15:23,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34363 states to 34363 states and 182968 transitions. [2020-10-15 23:15:23,427 INFO L78 Accepts]: Start accepts. Automaton has 34363 states and 182968 transitions. Word has length 25 [2020-10-15 23:15:23,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:15:23,427 INFO L481 AbstractCegarLoop]: Abstraction has 34363 states and 182968 transitions. [2020-10-15 23:15:23,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:15:23,427 INFO L276 IsEmpty]: Start isEmpty. Operand 34363 states and 182968 transitions. [2020-10-15 23:15:23,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:15:23,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:15:23,430 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:15:23,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2020-10-15 23:15:23,644 INFO L429 AbstractCegarLoop]: === Iteration 33 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:15:23,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:15:23,644 INFO L82 PathProgramCache]: Analyzing trace with hash -989383992, now seen corresponding path program 3 times [2020-10-15 23:15:23,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:15:23,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87337560] [2020-10-15 23:15:23,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:15:23,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:15:23,707 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:15:23,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87337560] [2020-10-15 23:15:23,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933789678] [2020-10-15 23:15:23,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:15:23,794 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 23:15:23,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:15:23,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:15:23,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:15:23,903 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:15:23,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:15:23,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:15:23,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562787578] [2020-10-15 23:15:23,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:15:23,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:15:23,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:15:23,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:15:23,905 INFO L87 Difference]: Start difference. First operand 34363 states and 182968 transitions. Second operand 16 states. [2020-10-15 23:15:26,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:15:26,188 INFO L93 Difference]: Finished difference Result 117996 states and 537739 transitions. [2020-10-15 23:15:26,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:15:26,188 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:15:26,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:15:26,537 INFO L225 Difference]: With dead ends: 117996 [2020-10-15 23:15:26,537 INFO L226 Difference]: Without dead ends: 117966 [2020-10-15 23:15:26,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:15:27,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117966 states. [2020-10-15 23:15:28,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117966 to 34024. [2020-10-15 23:15:28,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34024 states. [2020-10-15 23:15:29,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34024 states to 34024 states and 181250 transitions. [2020-10-15 23:15:29,055 INFO L78 Accepts]: Start accepts. Automaton has 34024 states and 181250 transitions. Word has length 25 [2020-10-15 23:15:29,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:15:29,055 INFO L481 AbstractCegarLoop]: Abstraction has 34024 states and 181250 transitions. [2020-10-15 23:15:29,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:15:29,055 INFO L276 IsEmpty]: Start isEmpty. Operand 34024 states and 181250 transitions. [2020-10-15 23:15:29,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:15:29,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:15:29,058 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:15:29,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2020-10-15 23:15:29,259 INFO L429 AbstractCegarLoop]: === Iteration 34 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:15:29,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:15:29,259 INFO L82 PathProgramCache]: Analyzing trace with hash 507575079, now seen corresponding path program 4 times [2020-10-15 23:15:29,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:15:29,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653918596] [2020-10-15 23:15:29,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:15:29,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:15:29,331 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:15:29,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653918596] [2020-10-15 23:15:29,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839492401] [2020-10-15 23:15:29,331 INFO L93 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 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:15:29,419 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 23:15:29,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:15:29,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:15:29,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:15:29,529 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:15:29,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:15:29,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:15:29,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204102557] [2020-10-15 23:15:29,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:15:29,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:15:29,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:15:29,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:15:29,531 INFO L87 Difference]: Start difference. First operand 34024 states and 181250 transitions. Second operand 16 states. [2020-10-15 23:15:31,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:15:31,276 INFO L93 Difference]: Finished difference Result 119076 states and 543105 transitions. [2020-10-15 23:15:31,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:15:31,276 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:15:31,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:15:31,621 INFO L225 Difference]: With dead ends: 119076 [2020-10-15 23:15:31,621 INFO L226 Difference]: Without dead ends: 119036 [2020-10-15 23:15:31,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:15:32,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119036 states. [2020-10-15 23:15:34,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119036 to 33873. [2020-10-15 23:15:34,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33873 states. [2020-10-15 23:15:34,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33873 states to 33873 states and 180354 transitions. [2020-10-15 23:15:34,138 INFO L78 Accepts]: Start accepts. Automaton has 33873 states and 180354 transitions. Word has length 25 [2020-10-15 23:15:34,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:15:34,138 INFO L481 AbstractCegarLoop]: Abstraction has 33873 states and 180354 transitions. [2020-10-15 23:15:34,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:15:34,138 INFO L276 IsEmpty]: Start isEmpty. Operand 33873 states and 180354 transitions. [2020-10-15 23:15:34,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:15:34,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:15:34,141 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:15:34,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108 [2020-10-15 23:15:34,341 INFO L429 AbstractCegarLoop]: === Iteration 35 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:15:34,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:15:34,342 INFO L82 PathProgramCache]: Analyzing trace with hash 507547272, now seen corresponding path program 4 times [2020-10-15 23:15:34,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:15:34,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678651101] [2020-10-15 23:15:34,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:15:34,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:15:34,406 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:15:34,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678651101] [2020-10-15 23:15:34,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226310520] [2020-10-15 23:15:34,407 INFO L93 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 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:15:34,487 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 23:15:34,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:15:34,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:15:34,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:15:34,598 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:15:34,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:15:34,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:15:34,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003808427] [2020-10-15 23:15:34,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:15:34,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:15:34,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:15:34,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:15:34,599 INFO L87 Difference]: Start difference. First operand 33873 states and 180354 transitions. Second operand 16 states. [2020-10-15 23:15:36,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:15:36,609 INFO L93 Difference]: Finished difference Result 118020 states and 538147 transitions. [2020-10-15 23:15:36,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:15:36,610 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:15:36,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:15:36,952 INFO L225 Difference]: With dead ends: 118020 [2020-10-15 23:15:36,952 INFO L226 Difference]: Without dead ends: 117980 [2020-10-15 23:15:36,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:15:38,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117980 states. [2020-10-15 23:15:39,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117980 to 33387. [2020-10-15 23:15:39,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33387 states. [2020-10-15 23:15:39,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33387 states to 33387 states and 177693 transitions. [2020-10-15 23:15:39,463 INFO L78 Accepts]: Start accepts. Automaton has 33387 states and 177693 transitions. Word has length 25 [2020-10-15 23:15:39,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:15:39,463 INFO L481 AbstractCegarLoop]: Abstraction has 33387 states and 177693 transitions. [2020-10-15 23:15:39,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:15:39,463 INFO L276 IsEmpty]: Start isEmpty. Operand 33387 states and 177693 transitions. [2020-10-15 23:15:39,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:15:39,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:15:39,466 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:15:39,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:15:39,666 INFO L429 AbstractCegarLoop]: === Iteration 36 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:15:39,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:15:39,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1147615783, now seen corresponding path program 5 times [2020-10-15 23:15:39,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:15:39,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931603787] [2020-10-15 23:15:39,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:15:39,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:15:39,733 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:15:39,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931603787] [2020-10-15 23:15:39,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:15:39,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:15:39,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389531866] [2020-10-15 23:15:39,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:15:39,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:15:39,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:15:39,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:15:39,734 INFO L87 Difference]: Start difference. First operand 33387 states and 177693 transitions. Second operand 9 states. [2020-10-15 23:15:41,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:15:41,368 INFO L93 Difference]: Finished difference Result 118363 states and 539792 transitions. [2020-10-15 23:15:41,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:15:41,369 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-15 23:15:41,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:15:41,751 INFO L225 Difference]: With dead ends: 118363 [2020-10-15 23:15:41,751 INFO L226 Difference]: Without dead ends: 118333 [2020-10-15 23:15:41,752 INFO L677 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 [2020-10-15 23:15:42,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118333 states. [2020-10-15 23:15:44,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118333 to 32908. [2020-10-15 23:15:44,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32908 states. [2020-10-15 23:15:44,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32908 states to 32908 states and 175152 transitions. [2020-10-15 23:15:44,298 INFO L78 Accepts]: Start accepts. Automaton has 32908 states and 175152 transitions. Word has length 25 [2020-10-15 23:15:44,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:15:44,298 INFO L481 AbstractCegarLoop]: Abstraction has 32908 states and 175152 transitions. [2020-10-15 23:15:44,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:15:44,299 INFO L276 IsEmpty]: Start isEmpty. Operand 32908 states and 175152 transitions. [2020-10-15 23:15:44,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:15:44,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:15:44,301 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:15:44,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2020-10-15 23:15:44,301 INFO L429 AbstractCegarLoop]: === Iteration 37 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:15:44,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:15:44,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1147599384, now seen corresponding path program 5 times [2020-10-15 23:15:44,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:15:44,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755064112] [2020-10-15 23:15:44,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:15:44,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:15:44,381 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:15:44,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755064112] [2020-10-15 23:15:44,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:15:44,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:15:44,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388839790] [2020-10-15 23:15:44,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:15:44,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:15:44,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:15:44,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:15:44,383 INFO L87 Difference]: Start difference. First operand 32908 states and 175152 transitions. Second operand 9 states. [2020-10-15 23:15:46,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:15:46,268 INFO L93 Difference]: Finished difference Result 117027 states and 533313 transitions. [2020-10-15 23:15:46,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:15:46,269 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-15 23:15:46,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:15:46,601 INFO L225 Difference]: With dead ends: 117027 [2020-10-15 23:15:46,601 INFO L226 Difference]: Without dead ends: 116997 [2020-10-15 23:15:46,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 23:15:47,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116997 states. [2020-10-15 23:15:48,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116997 to 32394. [2020-10-15 23:15:48,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32394 states. [2020-10-15 23:15:49,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32394 states to 32394 states and 172458 transitions. [2020-10-15 23:15:49,025 INFO L78 Accepts]: Start accepts. Automaton has 32394 states and 172458 transitions. Word has length 25 [2020-10-15 23:15:49,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:15:49,025 INFO L481 AbstractCegarLoop]: Abstraction has 32394 states and 172458 transitions. [2020-10-15 23:15:49,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:15:49,025 INFO L276 IsEmpty]: Start isEmpty. Operand 32394 states and 172458 transitions. [2020-10-15 23:15:49,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:15:49,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:15:49,028 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:15:49,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2020-10-15 23:15:49,028 INFO L429 AbstractCegarLoop]: === Iteration 38 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:15:49,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:15:49,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1136664103, now seen corresponding path program 6 times [2020-10-15 23:15:49,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:15:49,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577916220] [2020-10-15 23:15:49,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:15:49,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:15:49,099 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:15:49,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577916220] [2020-10-15 23:15:49,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:15:49,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:15:49,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114091999] [2020-10-15 23:15:49,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:15:49,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:15:49,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:15:49,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:15:49,101 INFO L87 Difference]: Start difference. First operand 32394 states and 172458 transitions. Second operand 9 states. [2020-10-15 23:15:50,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:15:50,558 INFO L93 Difference]: Finished difference Result 116213 states and 529114 transitions. [2020-10-15 23:15:50,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:15:50,559 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-15 23:15:50,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:15:50,894 INFO L225 Difference]: With dead ends: 116213 [2020-10-15 23:15:50,894 INFO L226 Difference]: Without dead ends: 116173 [2020-10-15 23:15:50,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 23:15:52,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116173 states. [2020-10-15 23:15:53,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116173 to 31530. [2020-10-15 23:15:53,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31530 states. [2020-10-15 23:15:53,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31530 states to 31530 states and 168028 transitions. [2020-10-15 23:15:53,361 INFO L78 Accepts]: Start accepts. Automaton has 31530 states and 168028 transitions. Word has length 25 [2020-10-15 23:15:53,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:15:53,361 INFO L481 AbstractCegarLoop]: Abstraction has 31530 states and 168028 transitions. [2020-10-15 23:15:53,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:15:53,361 INFO L276 IsEmpty]: Start isEmpty. Operand 31530 states and 168028 transitions. [2020-10-15 23:15:53,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:15:53,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:15:53,364 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:15:53,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2020-10-15 23:15:53,364 INFO L429 AbstractCegarLoop]: === Iteration 39 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:15:53,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:15:53,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1136636296, now seen corresponding path program 5 times [2020-10-15 23:15:53,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:15:53,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132750458] [2020-10-15 23:15:53,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:15:53,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:15:53,429 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:15:53,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132750458] [2020-10-15 23:15:53,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:15:53,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:15:53,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919873834] [2020-10-15 23:15:53,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:15:53,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:15:53,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:15:53,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:15:53,431 INFO L87 Difference]: Start difference. First operand 31530 states and 168028 transitions. Second operand 9 states. [2020-10-15 23:15:55,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:15:55,485 INFO L93 Difference]: Finished difference Result 115048 states and 523573 transitions. [2020-10-15 23:15:55,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:15:55,485 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-15 23:15:55,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:15:55,822 INFO L225 Difference]: With dead ends: 115048 [2020-10-15 23:15:55,822 INFO L226 Difference]: Without dead ends: 115018 [2020-10-15 23:15:55,822 INFO L677 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 [2020-10-15 23:15:56,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115018 states. [2020-10-15 23:15:58,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115018 to 31199. [2020-10-15 23:15:58,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31199 states. [2020-10-15 23:15:58,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31199 states to 31199 states and 166334 transitions. [2020-10-15 23:15:58,208 INFO L78 Accepts]: Start accepts. Automaton has 31199 states and 166334 transitions. Word has length 25 [2020-10-15 23:15:58,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:15:58,208 INFO L481 AbstractCegarLoop]: Abstraction has 31199 states and 166334 transitions. [2020-10-15 23:15:58,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:15:58,208 INFO L276 IsEmpty]: Start isEmpty. Operand 31199 states and 166334 transitions. [2020-10-15 23:15:58,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:15:58,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:15:58,211 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:15:58,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2020-10-15 23:15:58,211 INFO L429 AbstractCegarLoop]: === Iteration 40 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:15:58,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:15:58,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1120904664, now seen corresponding path program 6 times [2020-10-15 23:15:58,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:15:58,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745083291] [2020-10-15 23:15:58,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:15:58,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:15:58,293 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:15:58,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745083291] [2020-10-15 23:15:58,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:15:58,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:15:58,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482889451] [2020-10-15 23:15:58,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:15:58,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:15:58,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:15:58,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:15:58,296 INFO L87 Difference]: Start difference. First operand 31199 states and 166334 transitions. Second operand 9 states. [2020-10-15 23:15:59,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:15:59,796 INFO L93 Difference]: Finished difference Result 114413 states and 520399 transitions. [2020-10-15 23:15:59,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:15:59,796 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-15 23:15:59,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:16:00,119 INFO L225 Difference]: With dead ends: 114413 [2020-10-15 23:16:00,119 INFO L226 Difference]: Without dead ends: 114373 [2020-10-15 23:16:00,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 23:16:01,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114373 states. [2020-10-15 23:16:02,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114373 to 30592. [2020-10-15 23:16:02,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30592 states. [2020-10-15 23:16:02,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30592 states to 30592 states and 163260 transitions. [2020-10-15 23:16:02,495 INFO L78 Accepts]: Start accepts. Automaton has 30592 states and 163260 transitions. Word has length 25 [2020-10-15 23:16:02,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:16:02,495 INFO L481 AbstractCegarLoop]: Abstraction has 30592 states and 163260 transitions. [2020-10-15 23:16:02,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:16:02,496 INFO L276 IsEmpty]: Start isEmpty. Operand 30592 states and 163260 transitions. [2020-10-15 23:16:02,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:16:02,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:16:02,498 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:16:02,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2020-10-15 23:16:02,498 INFO L429 AbstractCegarLoop]: === Iteration 41 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:16:02,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:16:02,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1120893256, now seen corresponding path program 6 times [2020-10-15 23:16:02,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:16:02,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163037763] [2020-10-15 23:16:02,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:16:02,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:16:02,563 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:16:02,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163037763] [2020-10-15 23:16:02,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:16:02,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:16:02,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807261245] [2020-10-15 23:16:02,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:16:02,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:16:02,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:16:02,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:16:02,564 INFO L87 Difference]: Start difference. First operand 30592 states and 163260 transitions. Second operand 9 states. [2020-10-15 23:16:04,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:16:04,048 INFO L93 Difference]: Finished difference Result 113466 states and 515911 transitions. [2020-10-15 23:16:04,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:16:04,049 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-15 23:16:04,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:16:04,370 INFO L225 Difference]: With dead ends: 113466 [2020-10-15 23:16:04,370 INFO L226 Difference]: Without dead ends: 113426 [2020-10-15 23:16:04,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 23:16:06,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113426 states. [2020-10-15 23:16:07,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113426 to 29802. [2020-10-15 23:16:07,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29802 states. [2020-10-15 23:16:07,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29802 states to 29802 states and 159321 transitions. [2020-10-15 23:16:07,158 INFO L78 Accepts]: Start accepts. Automaton has 29802 states and 159321 transitions. Word has length 25 [2020-10-15 23:16:07,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:16:07,158 INFO L481 AbstractCegarLoop]: Abstraction has 29802 states and 159321 transitions. [2020-10-15 23:16:07,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:16:07,158 INFO L276 IsEmpty]: Start isEmpty. Operand 29802 states and 159321 transitions. [2020-10-15 23:16:07,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:16:07,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:16:07,160 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:16:07,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2020-10-15 23:16:07,160 INFO L429 AbstractCegarLoop]: === Iteration 42 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:16:07,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:16:07,161 INFO L82 PathProgramCache]: Analyzing trace with hash 123792641, now seen corresponding path program 1 times [2020-10-15 23:16:07,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:16:07,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416441375] [2020-10-15 23:16:07,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:16:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:16:07,191 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 23:16:07,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416441375] [2020-10-15 23:16:07,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:16:07,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 23:16:07,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325387118] [2020-10-15 23:16:07,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 23:16:07,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:16:07,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 23:16:07,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 23:16:07,193 INFO L87 Difference]: Start difference. First operand 29802 states and 159321 transitions. Second operand 5 states. [2020-10-15 23:16:07,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:16:07,609 INFO L93 Difference]: Finished difference Result 53165 states and 272731 transitions. [2020-10-15 23:16:07,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 23:16:07,609 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-15 23:16:07,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:16:07,775 INFO L225 Difference]: With dead ends: 53165 [2020-10-15 23:16:07,776 INFO L226 Difference]: Without dead ends: 53102 [2020-10-15 23:16:07,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:16:08,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53102 states. [2020-10-15 23:16:09,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53102 to 37675. [2020-10-15 23:16:09,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37675 states. [2020-10-15 23:16:09,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37675 states to 37675 states and 201015 transitions. [2020-10-15 23:16:09,338 INFO L78 Accepts]: Start accepts. Automaton has 37675 states and 201015 transitions. Word has length 25 [2020-10-15 23:16:09,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:16:09,338 INFO L481 AbstractCegarLoop]: Abstraction has 37675 states and 201015 transitions. [2020-10-15 23:16:09,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 23:16:09,339 INFO L276 IsEmpty]: Start isEmpty. Operand 37675 states and 201015 transitions. [2020-10-15 23:16:09,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:16:09,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:16:09,342 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:16:09,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2020-10-15 23:16:09,342 INFO L429 AbstractCegarLoop]: === Iteration 43 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:16:09,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:16:09,342 INFO L82 PathProgramCache]: Analyzing trace with hash -480284107, now seen corresponding path program 1 times [2020-10-15 23:16:09,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:16:09,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904145439] [2020-10-15 23:16:09,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:16:09,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:16:09,435 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:16:09,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904145439] [2020-10-15 23:16:09,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834509889] [2020-10-15 23:16:09,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:16:09,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:16:09,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 23:16:09,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:16:09,691 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:16:09,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:16:09,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 23:16:09,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338169167] [2020-10-15 23:16:09,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 23:16:09,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:16:09,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 23:16:09,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:16:09,692 INFO L87 Difference]: Start difference. First operand 37675 states and 201015 transitions. Second operand 20 states. [2020-10-15 23:16:13,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:16:13,391 INFO L93 Difference]: Finished difference Result 186148 states and 815009 transitions. [2020-10-15 23:16:13,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:16:13,392 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 23:16:13,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:16:13,895 INFO L225 Difference]: With dead ends: 186148 [2020-10-15 23:16:13,895 INFO L226 Difference]: Without dead ends: 186130 [2020-10-15 23:16:13,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1848 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 23:16:16,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186130 states. [2020-10-15 23:16:18,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186130 to 37780. [2020-10-15 23:16:18,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37780 states. [2020-10-15 23:16:18,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37780 states to 37780 states and 201508 transitions. [2020-10-15 23:16:18,243 INFO L78 Accepts]: Start accepts. Automaton has 37780 states and 201508 transitions. Word has length 27 [2020-10-15 23:16:18,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:16:18,243 INFO L481 AbstractCegarLoop]: Abstraction has 37780 states and 201508 transitions. [2020-10-15 23:16:18,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 23:16:18,243 INFO L276 IsEmpty]: Start isEmpty. Operand 37780 states and 201508 transitions. [2020-10-15 23:16:18,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:16:18,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:16:18,247 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:16:18,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2020-10-15 23:16:18,447 INFO L429 AbstractCegarLoop]: === Iteration 44 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:16:18,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:16:18,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1807002315, now seen corresponding path program 2 times [2020-10-15 23:16:18,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:16:18,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460796758] [2020-10-15 23:16:18,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:16:18,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:16:18,539 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 23:16:18,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460796758] [2020-10-15 23:16:18,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315961204] [2020-10-15 23:16:18,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:16:18,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 23:16:18,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:16:18,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 23:16:18,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:16:18,796 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 23:16:18,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:16:18,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 23:16:18,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924285657] [2020-10-15 23:16:18,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 23:16:18,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:16:18,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 23:16:18,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:16:18,797 INFO L87 Difference]: Start difference. First operand 37780 states and 201508 transitions. Second operand 20 states. [2020-10-15 23:16:22,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:16:22,531 INFO L93 Difference]: Finished difference Result 185731 states and 813247 transitions. [2020-10-15 23:16:22,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:16:22,532 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 23:16:22,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:16:23,038 INFO L225 Difference]: With dead ends: 185731 [2020-10-15 23:16:23,038 INFO L226 Difference]: Without dead ends: 185707 [2020-10-15 23:16:23,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1840 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 23:16:24,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185707 states. [2020-10-15 23:16:27,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185707 to 37506. [2020-10-15 23:16:27,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37506 states. [2020-10-15 23:16:27,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37506 states to 37506 states and 200034 transitions. [2020-10-15 23:16:27,566 INFO L78 Accepts]: Start accepts. Automaton has 37506 states and 200034 transitions. Word has length 27 [2020-10-15 23:16:27,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:16:27,567 INFO L481 AbstractCegarLoop]: Abstraction has 37506 states and 200034 transitions. [2020-10-15 23:16:27,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 23:16:27,567 INFO L276 IsEmpty]: Start isEmpty. Operand 37506 states and 200034 transitions. [2020-10-15 23:16:27,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:16:27,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:16:27,570 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:16:27,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2020-10-15 23:16:27,771 INFO L429 AbstractCegarLoop]: === Iteration 45 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:16:27,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:16:27,772 INFO L82 PathProgramCache]: Analyzing trace with hash 2078895349, now seen corresponding path program 3 times [2020-10-15 23:16:27,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:16:27,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323407506] [2020-10-15 23:16:27,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:16:27,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:16:27,875 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 23:16:27,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323407506] [2020-10-15 23:16:27,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993385778] [2020-10-15 23:16:27,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:16:27,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-15 23:16:27,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:16:27,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 23:16:27,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:16:28,128 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 23:16:28,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:16:28,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 23:16:28,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742839683] [2020-10-15 23:16:28,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 23:16:28,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:16:28,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 23:16:28,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:16:28,130 INFO L87 Difference]: Start difference. First operand 37506 states and 200034 transitions. Second operand 20 states. [2020-10-15 23:16:31,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:16:31,735 INFO L93 Difference]: Finished difference Result 185071 states and 810108 transitions. [2020-10-15 23:16:31,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:16:31,736 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 23:16:31,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:16:32,237 INFO L225 Difference]: With dead ends: 185071 [2020-10-15 23:16:32,237 INFO L226 Difference]: Without dead ends: 185053 [2020-10-15 23:16:32,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1842 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 23:16:33,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185053 states. [2020-10-15 23:16:35,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185053 to 37607. [2020-10-15 23:16:35,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37607 states. [2020-10-15 23:16:35,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37607 states to 37607 states and 200519 transitions. [2020-10-15 23:16:35,945 INFO L78 Accepts]: Start accepts. Automaton has 37607 states and 200519 transitions. Word has length 27 [2020-10-15 23:16:35,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:16:35,945 INFO L481 AbstractCegarLoop]: Abstraction has 37607 states and 200519 transitions. [2020-10-15 23:16:35,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 23:16:35,945 INFO L276 IsEmpty]: Start isEmpty. Operand 37607 states and 200519 transitions. [2020-10-15 23:16:35,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:16:35,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:16:35,948 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:16:36,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:16:36,149 INFO L429 AbstractCegarLoop]: === Iteration 46 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:16:36,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:16:36,150 INFO L82 PathProgramCache]: Analyzing trace with hash -651887627, now seen corresponding path program 4 times [2020-10-15 23:16:36,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:16:36,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000408302] [2020-10-15 23:16:36,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:16:36,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:16:36,247 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 23:16:36,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000408302] [2020-10-15 23:16:36,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591650763] [2020-10-15 23:16:36,248 INFO L93 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 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:16:36,333 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 23:16:36,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:16:36,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 23:16:36,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:16:36,503 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 23:16:36,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:16:36,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 23:16:36,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754317342] [2020-10-15 23:16:36,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 23:16:36,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:16:36,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 23:16:36,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:16:36,505 INFO L87 Difference]: Start difference. First operand 37607 states and 200519 transitions. Second operand 20 states. [2020-10-15 23:16:37,823 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-10-15 23:16:40,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:16:40,441 INFO L93 Difference]: Finished difference Result 184772 states and 808751 transitions. [2020-10-15 23:16:40,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:16:40,442 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 23:16:40,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:16:40,945 INFO L225 Difference]: With dead ends: 184772 [2020-10-15 23:16:40,945 INFO L226 Difference]: Without dead ends: 184748 [2020-10-15 23:16:40,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1836 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 23:16:42,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184748 states. [2020-10-15 23:16:44,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184748 to 37341. [2020-10-15 23:16:44,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37341 states. [2020-10-15 23:16:44,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37341 states to 37341 states and 199065 transitions. [2020-10-15 23:16:44,680 INFO L78 Accepts]: Start accepts. Automaton has 37341 states and 199065 transitions. Word has length 27 [2020-10-15 23:16:44,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:16:44,680 INFO L481 AbstractCegarLoop]: Abstraction has 37341 states and 199065 transitions. [2020-10-15 23:16:44,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 23:16:44,680 INFO L276 IsEmpty]: Start isEmpty. Operand 37341 states and 199065 transitions. [2020-10-15 23:16:44,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:16:44,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:16:44,683 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:16:44,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:16:44,884 INFO L429 AbstractCegarLoop]: === Iteration 47 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:16:44,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:16:44,885 INFO L82 PathProgramCache]: Analyzing trace with hash -11846923, now seen corresponding path program 5 times [2020-10-15 23:16:44,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:16:44,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997550233] [2020-10-15 23:16:44,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:16:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:16:44,982 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:16:44,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997550233] [2020-10-15 23:16:44,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596759645] [2020-10-15 23:16:44,983 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:16:45,081 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-15 23:16:45,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:16:45,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 23:16:45,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:16:45,251 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:16:45,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:16:45,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 23:16:45,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784052112] [2020-10-15 23:16:45,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 23:16:45,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:16:45,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 23:16:45,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:16:45,253 INFO L87 Difference]: Start difference. First operand 37341 states and 199065 transitions. Second operand 20 states. [2020-10-15 23:16:49,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:16:49,636 INFO L93 Difference]: Finished difference Result 184120 states and 805632 transitions. [2020-10-15 23:16:49,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:16:49,637 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 23:16:49,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:16:50,146 INFO L225 Difference]: With dead ends: 184120 [2020-10-15 23:16:50,146 INFO L226 Difference]: Without dead ends: 184102 [2020-10-15 23:16:50,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1835 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 23:16:51,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184102 states. [2020-10-15 23:16:53,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184102 to 37438. [2020-10-15 23:16:53,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37438 states. [2020-10-15 23:16:53,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37438 states to 37438 states and 199538 transitions. [2020-10-15 23:16:53,587 INFO L78 Accepts]: Start accepts. Automaton has 37438 states and 199538 transitions. Word has length 27 [2020-10-15 23:16:53,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:16:53,587 INFO L481 AbstractCegarLoop]: Abstraction has 37438 states and 199538 transitions. [2020-10-15 23:16:53,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 23:16:53,588 INFO L276 IsEmpty]: Start isEmpty. Operand 37438 states and 199538 transitions. [2020-10-15 23:16:53,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:16:53,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:16:53,591 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:16:53,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:16:53,791 INFO L429 AbstractCegarLoop]: === Iteration 48 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:16:53,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:16:53,792 INFO L82 PathProgramCache]: Analyzing trace with hash -22798603, now seen corresponding path program 6 times [2020-10-15 23:16:53,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:16:53,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428186893] [2020-10-15 23:16:53,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:16:53,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:16:53,888 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:16:53,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428186893] [2020-10-15 23:16:53,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116653515] [2020-10-15 23:16:53,889 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:16:53,977 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-15 23:16:53,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:16:53,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 23:16:53,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:16:54,148 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:16:54,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:16:54,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 23:16:54,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960127593] [2020-10-15 23:16:54,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 23:16:54,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:16:54,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 23:16:54,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:16:54,150 INFO L87 Difference]: Start difference. First operand 37438 states and 199538 transitions. Second operand 20 states. [2020-10-15 23:16:57,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:16:57,688 INFO L93 Difference]: Finished difference Result 183711 states and 803890 transitions. [2020-10-15 23:16:57,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:16:57,689 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 23:16:57,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:16:58,170 INFO L225 Difference]: With dead ends: 183711 [2020-10-15 23:16:58,170 INFO L226 Difference]: Without dead ends: 183683 [2020-10-15 23:16:58,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1824 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 23:17:00,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183683 states. [2020-10-15 23:17:02,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183683 to 37176. [2020-10-15 23:17:02,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37176 states. [2020-10-15 23:17:02,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37176 states to 37176 states and 198103 transitions. [2020-10-15 23:17:02,283 INFO L78 Accepts]: Start accepts. Automaton has 37176 states and 198103 transitions. Word has length 27 [2020-10-15 23:17:02,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:17:02,283 INFO L481 AbstractCegarLoop]: Abstraction has 37176 states and 198103 transitions. [2020-10-15 23:17:02,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 23:17:02,283 INFO L276 IsEmpty]: Start isEmpty. Operand 37176 states and 198103 transitions. [2020-10-15 23:17:02,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:17:02,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:17:02,286 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:17:02,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2020-10-15 23:17:02,487 INFO L429 AbstractCegarLoop]: === Iteration 49 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:17:02,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:17:02,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1035670065, now seen corresponding path program 1 times [2020-10-15 23:17:02,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:17:02,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075862012] [2020-10-15 23:17:02,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:17:02,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:17:02,532 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-15 23:17:02,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075862012] [2020-10-15 23:17:02,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547059096] [2020-10-15 23:17:02,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:17:02,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:17:02,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 23:17:02,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:17:02,674 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-15 23:17:02,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:17:02,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 23:17:02,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783007860] [2020-10-15 23:17:02,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 23:17:02,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:17:02,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 23:17:02,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 23:17:02,676 INFO L87 Difference]: Start difference. First operand 37176 states and 198103 transitions. Second operand 12 states. [2020-10-15 23:17:03,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:17:03,443 INFO L93 Difference]: Finished difference Result 82213 states and 399726 transitions. [2020-10-15 23:17:03,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:17:03,443 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-10-15 23:17:03,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:17:03,683 INFO L225 Difference]: With dead ends: 82213 [2020-10-15 23:17:03,683 INFO L226 Difference]: Without dead ends: 82165 [2020-10-15 23:17:03,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:17:04,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82165 states. [2020-10-15 23:17:05,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82165 to 38439. [2020-10-15 23:17:05,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38439 states. [2020-10-15 23:17:05,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38439 states to 38439 states and 204452 transitions. [2020-10-15 23:17:05,674 INFO L78 Accepts]: Start accepts. Automaton has 38439 states and 204452 transitions. Word has length 27 [2020-10-15 23:17:05,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:17:05,674 INFO L481 AbstractCegarLoop]: Abstraction has 38439 states and 204452 transitions. [2020-10-15 23:17:05,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 23:17:05,674 INFO L276 IsEmpty]: Start isEmpty. Operand 38439 states and 204452 transitions. [2020-10-15 23:17:05,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:17:05,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:17:05,677 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:17:05,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2020-10-15 23:17:05,878 INFO L429 AbstractCegarLoop]: === Iteration 50 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:17:05,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:17:05,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1753210507, now seen corresponding path program 7 times [2020-10-15 23:17:05,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:17:05,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667690591] [2020-10-15 23:17:05,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:17:05,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:17:05,976 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:17:05,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667690591] [2020-10-15 23:17:05,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561267740] [2020-10-15 23:17:05,977 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:17:06,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:17:06,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 23:17:06,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:17:06,248 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:17:06,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:17:06,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 23:17:06,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958851437] [2020-10-15 23:17:06,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 23:17:06,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:17:06,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 23:17:06,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:17:06,251 INFO L87 Difference]: Start difference. First operand 38439 states and 204452 transitions. Second operand 20 states. [2020-10-15 23:17:10,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:17:10,293 INFO L93 Difference]: Finished difference Result 183266 states and 800955 transitions. [2020-10-15 23:17:10,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:17:10,293 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 23:17:10,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:17:10,790 INFO L225 Difference]: With dead ends: 183266 [2020-10-15 23:17:10,790 INFO L226 Difference]: Without dead ends: 183248 [2020-10-15 23:17:10,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1844 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 23:17:12,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183248 states. [2020-10-15 23:17:14,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183248 to 38274. [2020-10-15 23:17:14,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38274 states. [2020-10-15 23:17:14,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38274 states to 38274 states and 203647 transitions. [2020-10-15 23:17:14,350 INFO L78 Accepts]: Start accepts. Automaton has 38274 states and 203647 transitions. Word has length 27 [2020-10-15 23:17:14,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:17:14,350 INFO L481 AbstractCegarLoop]: Abstraction has 38274 states and 203647 transitions. [2020-10-15 23:17:14,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 23:17:14,351 INFO L276 IsEmpty]: Start isEmpty. Operand 38274 states and 203647 transitions. [2020-10-15 23:17:14,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:17:14,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:17:14,354 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:17:14,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2020-10-15 23:17:14,555 INFO L429 AbstractCegarLoop]: === Iteration 51 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:17:14,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:17:14,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1215038581, now seen corresponding path program 8 times [2020-10-15 23:17:14,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:17:14,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049948507] [2020-10-15 23:17:14,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:17:14,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:17:14,650 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:17:14,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049948507] [2020-10-15 23:17:14,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61936121] [2020-10-15 23:17:14,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:17:14,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 23:17:14,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:17:14,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 23:17:14,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:17:14,900 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:17:14,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:17:14,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 23:17:14,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811321113] [2020-10-15 23:17:14,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 23:17:14,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:17:14,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 23:17:14,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:17:14,902 INFO L87 Difference]: Start difference. First operand 38274 states and 203647 transitions. Second operand 20 states. [2020-10-15 23:17:19,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:17:19,095 INFO L93 Difference]: Finished difference Result 182849 states and 799193 transitions. [2020-10-15 23:17:19,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:17:19,096 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 23:17:19,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:17:19,591 INFO L225 Difference]: With dead ends: 182849 [2020-10-15 23:17:19,591 INFO L226 Difference]: Without dead ends: 182825 [2020-10-15 23:17:19,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1836 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 23:17:22,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182825 states. [2020-10-15 23:17:23,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182825 to 37880. [2020-10-15 23:17:23,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37880 states. [2020-10-15 23:17:23,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37880 states to 37880 states and 201614 transitions. [2020-10-15 23:17:23,892 INFO L78 Accepts]: Start accepts. Automaton has 37880 states and 201614 transitions. Word has length 27 [2020-10-15 23:17:23,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:17:23,892 INFO L481 AbstractCegarLoop]: Abstraction has 37880 states and 201614 transitions. [2020-10-15 23:17:23,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 23:17:23,892 INFO L276 IsEmpty]: Start isEmpty. Operand 37880 states and 201614 transitions. [2020-10-15 23:17:23,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:17:23,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:17:23,896 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:17:24,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2020-10-15 23:17:24,097 INFO L429 AbstractCegarLoop]: === Iteration 52 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:17:24,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:17:24,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1641326347, now seen corresponding path program 9 times [2020-10-15 23:17:24,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:17:24,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257607267] [2020-10-15 23:17:24,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:17:24,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:17:24,194 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:17:24,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257607267] [2020-10-15 23:17:24,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948627560] [2020-10-15 23:17:24,195 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:17:24,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-15 23:17:24,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:17:24,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 23:17:24,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:17:24,441 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:17:24,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:17:24,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 23:17:24,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397314916] [2020-10-15 23:17:24,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 23:17:24,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:17:24,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 23:17:24,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:17:24,443 INFO L87 Difference]: Start difference. First operand 37880 states and 201614 transitions. Second operand 20 states. [2020-10-15 23:17:28,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:17:28,238 INFO L93 Difference]: Finished difference Result 183813 states and 803277 transitions. [2020-10-15 23:17:28,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:17:28,239 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 23:17:28,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:17:28,730 INFO L225 Difference]: With dead ends: 183813 [2020-10-15 23:17:28,730 INFO L226 Difference]: Without dead ends: 183795 [2020-10-15 23:17:28,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1840 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 23:17:30,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183795 states. [2020-10-15 23:17:33,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183795 to 37981. [2020-10-15 23:17:33,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37981 states. [2020-10-15 23:17:33,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37981 states to 37981 states and 202099 transitions. [2020-10-15 23:17:33,223 INFO L78 Accepts]: Start accepts. Automaton has 37981 states and 202099 transitions. Word has length 27 [2020-10-15 23:17:33,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:17:33,223 INFO L481 AbstractCegarLoop]: Abstraction has 37981 states and 202099 transitions. [2020-10-15 23:17:33,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 23:17:33,223 INFO L276 IsEmpty]: Start isEmpty. Operand 37981 states and 202099 transitions. [2020-10-15 23:17:33,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:17:33,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:17:33,227 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:17:33,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2020-10-15 23:17:33,435 INFO L429 AbstractCegarLoop]: === Iteration 53 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:17:33,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:17:33,436 INFO L82 PathProgramCache]: Analyzing trace with hash -144395083, now seen corresponding path program 10 times [2020-10-15 23:17:33,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:17:33,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733751604] [2020-10-15 23:17:33,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:17:33,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:17:33,531 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:17:33,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733751604] [2020-10-15 23:17:33,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422635368] [2020-10-15 23:17:33,531 INFO L93 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 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:17:33,612 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 23:17:33,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:17:33,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 23:17:33,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:17:33,777 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:17:33,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:17:33,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 23:17:33,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539918978] [2020-10-15 23:17:33,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 23:17:33,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:17:33,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 23:17:33,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:17:33,779 INFO L87 Difference]: Start difference. First operand 37981 states and 202099 transitions. Second operand 20 states. [2020-10-15 23:17:37,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:17:37,967 INFO L93 Difference]: Finished difference Result 184566 states and 806586 transitions. [2020-10-15 23:17:37,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:17:37,968 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 23:17:37,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:17:38,454 INFO L225 Difference]: With dead ends: 184566 [2020-10-15 23:17:38,454 INFO L226 Difference]: Without dead ends: 184542 [2020-10-15 23:17:38,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1839 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 23:17:40,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184542 states. [2020-10-15 23:17:42,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184542 to 37715. [2020-10-15 23:17:42,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37715 states. [2020-10-15 23:17:42,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37715 states to 37715 states and 200645 transitions. [2020-10-15 23:17:42,988 INFO L78 Accepts]: Start accepts. Automaton has 37715 states and 200645 transitions. Word has length 27 [2020-10-15 23:17:42,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:17:42,988 INFO L481 AbstractCegarLoop]: Abstraction has 37715 states and 200645 transitions. [2020-10-15 23:17:42,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 23:17:42,989 INFO L276 IsEmpty]: Start isEmpty. Operand 37715 states and 200645 transitions. [2020-10-15 23:17:42,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:17:42,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:17:42,993 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:17:43,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:17:43,207 INFO L429 AbstractCegarLoop]: === Iteration 54 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:17:43,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:17:43,207 INFO L82 PathProgramCache]: Analyzing trace with hash 484693941, now seen corresponding path program 11 times [2020-10-15 23:17:43,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:17:43,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935311167] [2020-10-15 23:17:43,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:17:43,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:17:43,305 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:17:43,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935311167] [2020-10-15 23:17:43,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874993260] [2020-10-15 23:17:43,306 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:17:43,400 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-15 23:17:43,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:17:43,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 23:17:43,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:17:43,568 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:17:43,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:17:43,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 23:17:43,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494803510] [2020-10-15 23:17:43,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 23:17:43,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:17:43,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 23:17:43,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:17:43,569 INFO L87 Difference]: Start difference. First operand 37715 states and 200645 transitions. Second operand 20 states. [2020-10-15 23:17:47,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:17:47,291 INFO L93 Difference]: Finished difference Result 183914 states and 803467 transitions. [2020-10-15 23:17:47,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:17:47,292 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 23:17:47,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:17:47,790 INFO L225 Difference]: With dead ends: 183914 [2020-10-15 23:17:47,790 INFO L226 Difference]: Without dead ends: 183896 [2020-10-15 23:17:47,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1827 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 23:17:49,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183896 states. [2020-10-15 23:17:51,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183896 to 37812. [2020-10-15 23:17:51,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37812 states. [2020-10-15 23:17:51,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37812 states to 37812 states and 201118 transitions. [2020-10-15 23:17:51,466 INFO L78 Accepts]: Start accepts. Automaton has 37812 states and 201118 transitions. Word has length 27 [2020-10-15 23:17:51,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:17:51,466 INFO L481 AbstractCegarLoop]: Abstraction has 37812 states and 201118 transitions. [2020-10-15 23:17:51,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 23:17:51,466 INFO L276 IsEmpty]: Start isEmpty. Operand 37812 states and 201118 transitions. [2020-10-15 23:17:51,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:17:51,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:17:51,470 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:17:51,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2020-10-15 23:17:51,671 INFO L429 AbstractCegarLoop]: === Iteration 55 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:17:51,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:17:51,672 INFO L82 PathProgramCache]: Analyzing trace with hash 468950901, now seen corresponding path program 12 times [2020-10-15 23:17:51,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:17:51,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024621183] [2020-10-15 23:17:51,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:17:51,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:17:51,768 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:17:51,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024621183] [2020-10-15 23:17:51,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447339598] [2020-10-15 23:17:51,769 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:17:51,852 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-15 23:17:51,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:17:51,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 23:17:51,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:17:52,029 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:17:52,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:17:52,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 23:17:52,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677789088] [2020-10-15 23:17:52,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 23:17:52,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:17:52,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 23:17:52,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:17:52,030 INFO L87 Difference]: Start difference. First operand 37812 states and 201118 transitions. Second operand 20 states. [2020-10-15 23:17:56,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:17:56,478 INFO L93 Difference]: Finished difference Result 182421 states and 796955 transitions. [2020-10-15 23:17:56,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:17:56,478 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 23:17:56,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:17:56,959 INFO L225 Difference]: With dead ends: 182421 [2020-10-15 23:17:56,959 INFO L226 Difference]: Without dead ends: 182393 [2020-10-15 23:17:56,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1837 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 23:17:58,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182393 states. [2020-10-15 23:18:00,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182393 to 37550. [2020-10-15 23:18:00,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37550 states. [2020-10-15 23:18:00,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37550 states to 37550 states and 199683 transitions. [2020-10-15 23:18:00,615 INFO L78 Accepts]: Start accepts. Automaton has 37550 states and 199683 transitions. Word has length 27 [2020-10-15 23:18:00,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:18:00,615 INFO L481 AbstractCegarLoop]: Abstraction has 37550 states and 199683 transitions. [2020-10-15 23:18:00,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 23:18:00,615 INFO L276 IsEmpty]: Start isEmpty. Operand 37550 states and 199683 transitions. [2020-10-15 23:18:00,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:18:00,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:18:00,619 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:18:00,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2020-10-15 23:18:00,828 INFO L429 AbstractCegarLoop]: === Iteration 56 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:18:00,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:18:00,828 INFO L82 PathProgramCache]: Analyzing trace with hash -528149714, now seen corresponding path program 1 times [2020-10-15 23:18:00,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:18:00,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025986435] [2020-10-15 23:18:00,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:18:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:18:00,878 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-15 23:18:00,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025986435] [2020-10-15 23:18:00,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951117314] [2020-10-15 23:18:00,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:18:00,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:18:00,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 23:18:00,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:18:01,038 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-15 23:18:01,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:18:01,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 23:18:01,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695331397] [2020-10-15 23:18:01,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 23:18:01,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:18:01,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 23:18:01,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 23:18:01,040 INFO L87 Difference]: Start difference. First operand 37550 states and 199683 transitions. Second operand 12 states. [2020-10-15 23:18:01,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:18:01,883 INFO L93 Difference]: Finished difference Result 86095 states and 418282 transitions. [2020-10-15 23:18:01,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:18:01,884 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-10-15 23:18:01,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:18:02,131 INFO L225 Difference]: With dead ends: 86095 [2020-10-15 23:18:02,131 INFO L226 Difference]: Without dead ends: 86043 [2020-10-15 23:18:02,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:18:03,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86043 states. [2020-10-15 23:18:04,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86043 to 39046. [2020-10-15 23:18:04,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39046 states. [2020-10-15 23:18:04,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39046 states to 39046 states and 207545 transitions. [2020-10-15 23:18:04,572 INFO L78 Accepts]: Start accepts. Automaton has 39046 states and 207545 transitions. Word has length 27 [2020-10-15 23:18:04,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:18:04,572 INFO L481 AbstractCegarLoop]: Abstraction has 39046 states and 207545 transitions. [2020-10-15 23:18:04,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 23:18:04,572 INFO L276 IsEmpty]: Start isEmpty. Operand 39046 states and 207545 transitions. [2020-10-15 23:18:04,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:18:04,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:18:04,576 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:18:04,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:18:04,777 INFO L429 AbstractCegarLoop]: === Iteration 57 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:18:04,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:18:04,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1008837557, now seen corresponding path program 13 times [2020-10-15 23:18:04,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:18:04,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865940948] [2020-10-15 23:18:04,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:18:04,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:18:04,872 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:18:04,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865940948] [2020-10-15 23:18:04,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420089782] [2020-10-15 23:18:04,873 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:18:04,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:18:04,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 23:18:04,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:18:05,135 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:18:05,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:18:05,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 23:18:05,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806819208] [2020-10-15 23:18:05,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 23:18:05,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:18:05,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 23:18:05,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:18:05,136 INFO L87 Difference]: Start difference. First operand 39046 states and 207545 transitions. Second operand 20 states. [2020-10-15 23:18:08,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:18:08,700 INFO L93 Difference]: Finished difference Result 182203 states and 795088 transitions. [2020-10-15 23:18:08,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:18:08,701 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 23:18:08,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:18:09,181 INFO L225 Difference]: With dead ends: 182203 [2020-10-15 23:18:09,181 INFO L226 Difference]: Without dead ends: 182185 [2020-10-15 23:18:09,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1840 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 23:18:10,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182185 states. [2020-10-15 23:18:13,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182185 to 38881. [2020-10-15 23:18:13,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38881 states. [2020-10-15 23:18:13,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38881 states to 38881 states and 206740 transitions. [2020-10-15 23:18:13,636 INFO L78 Accepts]: Start accepts. Automaton has 38881 states and 206740 transitions. Word has length 27 [2020-10-15 23:18:13,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:18:13,636 INFO L481 AbstractCegarLoop]: Abstraction has 38881 states and 206740 transitions. [2020-10-15 23:18:13,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 23:18:13,636 INFO L276 IsEmpty]: Start isEmpty. Operand 38881 states and 206740 transitions. [2020-10-15 23:18:13,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:18:13,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:18:13,641 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:18:13,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:18:13,855 INFO L429 AbstractCegarLoop]: === Iteration 58 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:18:13,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:18:13,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1789198475, now seen corresponding path program 14 times [2020-10-15 23:18:13,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:18:13,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177927304] [2020-10-15 23:18:13,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:18:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:18:13,950 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:18:13,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177927304] [2020-10-15 23:18:13,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088205318] [2020-10-15 23:18:13,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:18:14,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 23:18:14,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:18:14,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 23:18:14,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:18:14,196 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:18:14,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:18:14,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 23:18:14,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802489271] [2020-10-15 23:18:14,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 23:18:14,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:18:14,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 23:18:14,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:18:14,198 INFO L87 Difference]: Start difference. First operand 38881 states and 206740 transitions. Second operand 20 states. [2020-10-15 23:18:17,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:18:17,764 INFO L93 Difference]: Finished difference Result 182814 states and 797848 transitions. [2020-10-15 23:18:17,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:18:17,765 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 23:18:17,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:18:18,246 INFO L225 Difference]: With dead ends: 182814 [2020-10-15 23:18:18,246 INFO L226 Difference]: Without dead ends: 182790 [2020-10-15 23:18:18,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1840 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 23:18:19,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182790 states. [2020-10-15 23:18:21,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182790 to 38491. [2020-10-15 23:18:21,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38491 states. [2020-10-15 23:18:21,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38491 states to 38491 states and 204715 transitions. [2020-10-15 23:18:21,877 INFO L78 Accepts]: Start accepts. Automaton has 38491 states and 204715 transitions. Word has length 27 [2020-10-15 23:18:21,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:18:21,878 INFO L481 AbstractCegarLoop]: Abstraction has 38491 states and 204715 transitions. [2020-10-15 23:18:21,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 23:18:21,878 INFO L276 IsEmpty]: Start isEmpty. Operand 38491 states and 204715 transitions. [2020-10-15 23:18:21,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:18:21,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:18:21,882 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:18:22,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,69 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:18:22,083 INFO L429 AbstractCegarLoop]: === Iteration 59 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:18:22,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:18:22,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1120567157, now seen corresponding path program 15 times [2020-10-15 23:18:22,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:18:22,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361760107] [2020-10-15 23:18:22,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:18:22,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:18:22,183 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:18:22,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361760107] [2020-10-15 23:18:22,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172304524] [2020-10-15 23:18:22,183 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:18:22,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 23:18:22,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:18:22,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 23:18:22,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:18:22,447 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:18:22,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:18:22,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 23:18:22,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460087043] [2020-10-15 23:18:22,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 23:18:22,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:18:22,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 23:18:22,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:18:22,448 INFO L87 Difference]: Start difference. First operand 38491 states and 204715 transitions. Second operand 20 states. [2020-10-15 23:18:26,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:18:26,386 INFO L93 Difference]: Finished difference Result 181233 states and 790722 transitions. [2020-10-15 23:18:26,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:18:26,386 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 23:18:26,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:18:26,858 INFO L225 Difference]: With dead ends: 181233 [2020-10-15 23:18:26,858 INFO L226 Difference]: Without dead ends: 181215 [2020-10-15 23:18:26,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1837 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 23:18:28,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181215 states. [2020-10-15 23:18:30,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181215 to 38192. [2020-10-15 23:18:30,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38192 states. [2020-10-15 23:18:30,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38192 states to 38192 states and 203358 transitions. [2020-10-15 23:18:30,464 INFO L78 Accepts]: Start accepts. Automaton has 38192 states and 203358 transitions. Word has length 27 [2020-10-15 23:18:30,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:18:30,464 INFO L481 AbstractCegarLoop]: Abstraction has 38192 states and 203358 transitions. [2020-10-15 23:18:30,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 23:18:30,464 INFO L276 IsEmpty]: Start isEmpty. Operand 38192 states and 203358 transitions. [2020-10-15 23:18:30,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:18:30,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:18:30,468 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:18:30,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2020-10-15 23:18:30,669 INFO L429 AbstractCegarLoop]: === Iteration 60 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:18:30,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:18:30,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1610215819, now seen corresponding path program 16 times [2020-10-15 23:18:30,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:18:30,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562392987] [2020-10-15 23:18:30,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:18:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:18:30,767 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:18:30,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562392987] [2020-10-15 23:18:30,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171880286] [2020-10-15 23:18:30,768 INFO L93 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 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:18:30,853 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 23:18:30,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:18:30,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 23:18:30,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:18:31,027 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:18:31,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:18:31,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 23:18:31,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86095503] [2020-10-15 23:18:31,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 23:18:31,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:18:31,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 23:18:31,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:18:31,029 INFO L87 Difference]: Start difference. First operand 38192 states and 203358 transitions. Second operand 20 states. [2020-10-15 23:18:35,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:18:35,504 INFO L93 Difference]: Finished difference Result 181989 states and 794023 transitions. [2020-10-15 23:18:35,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:18:35,505 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 23:18:35,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:18:35,984 INFO L225 Difference]: With dead ends: 181989 [2020-10-15 23:18:35,984 INFO L226 Difference]: Without dead ends: 181965 [2020-10-15 23:18:35,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1832 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 23:18:37,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181965 states. [2020-10-15 23:18:39,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181965 to 37802. [2020-10-15 23:18:39,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37802 states. [2020-10-15 23:18:39,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37802 states to 37802 states and 201333 transitions. [2020-10-15 23:18:39,551 INFO L78 Accepts]: Start accepts. Automaton has 37802 states and 201333 transitions. Word has length 27 [2020-10-15 23:18:39,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:18:39,552 INFO L481 AbstractCegarLoop]: Abstraction has 37802 states and 201333 transitions. [2020-10-15 23:18:39,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 23:18:39,552 INFO L276 IsEmpty]: Start isEmpty. Operand 37802 states and 201333 transitions. [2020-10-15 23:18:39,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:18:39,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:18:39,556 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:18:39,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2020-10-15 23:18:39,756 INFO L429 AbstractCegarLoop]: === Iteration 61 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:18:39,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:18:39,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1846620555, now seen corresponding path program 17 times [2020-10-15 23:18:39,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:18:39,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233878092] [2020-10-15 23:18:39,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:18:39,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:18:39,853 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:18:39,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233878092] [2020-10-15 23:18:39,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163745195] [2020-10-15 23:18:39,854 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:18:39,940 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-15 23:18:39,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:18:39,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 23:18:39,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:18:40,127 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:18:40,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:18:40,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 23:18:40,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703915433] [2020-10-15 23:18:40,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 23:18:40,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:18:40,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 23:18:40,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:18:40,128 INFO L87 Difference]: Start difference. First operand 37802 states and 201333 transitions. Second operand 20 states. [2020-10-15 23:18:44,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:18:44,002 INFO L93 Difference]: Finished difference Result 183299 states and 799959 transitions. [2020-10-15 23:18:44,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:18:44,003 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 23:18:44,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:18:44,490 INFO L225 Difference]: With dead ends: 183299 [2020-10-15 23:18:44,490 INFO L226 Difference]: Without dead ends: 183281 [2020-10-15 23:18:44,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1836 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 23:18:46,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183281 states. [2020-10-15 23:18:48,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183281 to 37899. [2020-10-15 23:18:48,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37899 states. [2020-10-15 23:18:48,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37899 states to 37899 states and 201806 transitions. [2020-10-15 23:18:48,651 INFO L78 Accepts]: Start accepts. Automaton has 37899 states and 201806 transitions. Word has length 27 [2020-10-15 23:18:48,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:18:48,652 INFO L481 AbstractCegarLoop]: Abstraction has 37899 states and 201806 transitions. [2020-10-15 23:18:48,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 23:18:48,652 INFO L276 IsEmpty]: Start isEmpty. Operand 37899 states and 201806 transitions. [2020-10-15 23:18:48,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:18:48,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:18:48,656 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:18:48,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2020-10-15 23:18:48,857 INFO L429 AbstractCegarLoop]: === Iteration 62 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:18:48,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:18:48,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1873315275, now seen corresponding path program 18 times [2020-10-15 23:18:48,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:18:48,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389951552] [2020-10-15 23:18:48,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:18:48,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:18:48,970 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:18:48,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389951552] [2020-10-15 23:18:48,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101711089] [2020-10-15 23:18:48,970 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:18:49,053 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-15 23:18:49,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:18:49,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 23:18:49,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:18:49,237 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:18:49,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:18:49,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 23:18:49,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125682089] [2020-10-15 23:18:49,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 23:18:49,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:18:49,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 23:18:49,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:18:49,239 INFO L87 Difference]: Start difference. First operand 37899 states and 201806 transitions. Second operand 20 states. [2020-10-15 23:18:53,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:18:53,256 INFO L93 Difference]: Finished difference Result 182890 states and 798217 transitions. [2020-10-15 23:18:53,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:18:53,257 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 23:18:53,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:18:53,742 INFO L225 Difference]: With dead ends: 182890 [2020-10-15 23:18:53,743 INFO L226 Difference]: Without dead ends: 182862 [2020-10-15 23:18:53,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1827 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 23:18:56,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182862 states. [2020-10-15 23:18:57,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182862 to 37637. [2020-10-15 23:18:57,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37637 states. [2020-10-15 23:18:57,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37637 states to 37637 states and 200371 transitions. [2020-10-15 23:18:57,989 INFO L78 Accepts]: Start accepts. Automaton has 37637 states and 200371 transitions. Word has length 27 [2020-10-15 23:18:57,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:18:57,989 INFO L481 AbstractCegarLoop]: Abstraction has 37637 states and 200371 transitions. [2020-10-15 23:18:57,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 23:18:57,989 INFO L276 IsEmpty]: Start isEmpty. Operand 37637 states and 200371 transitions. [2020-10-15 23:18:57,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:18:57,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:18:57,993 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:18:58,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2020-10-15 23:18:58,194 INFO L429 AbstractCegarLoop]: === Iteration 63 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:18:58,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:18:58,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1424539998, now seen corresponding path program 1 times [2020-10-15 23:18:58,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:18:58,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455652442] [2020-10-15 23:18:58,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:18:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:18:58,253 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:18:58,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455652442] [2020-10-15 23:18:58,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059189133] [2020-10-15 23:18:58,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:18:58,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:18:58,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 23:18:58,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:18:58,421 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:18:58,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:18:58,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 23:18:58,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311253492] [2020-10-15 23:18:58,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 23:18:58,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:18:58,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 23:18:58,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 23:18:58,423 INFO L87 Difference]: Start difference. First operand 37637 states and 200371 transitions. Second operand 12 states. [2020-10-15 23:18:59,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:18:59,438 INFO L93 Difference]: Finished difference Result 88848 states and 432494 transitions. [2020-10-15 23:18:59,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:18:59,439 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-10-15 23:18:59,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:18:59,700 INFO L225 Difference]: With dead ends: 88848 [2020-10-15 23:18:59,700 INFO L226 Difference]: Without dead ends: 88788 [2020-10-15 23:18:59,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:19:00,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88788 states. [2020-10-15 23:19:01,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88788 to 39292. [2020-10-15 23:19:01,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39292 states. [2020-10-15 23:19:01,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39292 states to 39292 states and 209387 transitions. [2020-10-15 23:19:01,778 INFO L78 Accepts]: Start accepts. Automaton has 39292 states and 209387 transitions. Word has length 27 [2020-10-15 23:19:01,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:19:01,778 INFO L481 AbstractCegarLoop]: Abstraction has 39292 states and 209387 transitions. [2020-10-15 23:19:01,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 23:19:01,778 INFO L276 IsEmpty]: Start isEmpty. Operand 39292 states and 209387 transitions. [2020-10-15 23:19:01,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:19:01,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:19:01,783 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:19:01,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:19:01,983 INFO L429 AbstractCegarLoop]: === Iteration 64 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:19:01,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:19:01,984 INFO L82 PathProgramCache]: Analyzing trace with hash -839318940, now seen corresponding path program 1 times [2020-10-15 23:19:01,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:19:01,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317185281] [2020-10-15 23:19:01,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:19:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:19:02,041 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:19:02,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317185281] [2020-10-15 23:19:02,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973279848] [2020-10-15 23:19:02,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:19:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:19:02,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 23:19:02,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:19:02,202 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:19:02,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:19:02,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 23:19:02,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143972233] [2020-10-15 23:19:02,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 23:19:02,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:19:02,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 23:19:02,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 23:19:02,204 INFO L87 Difference]: Start difference. First operand 39292 states and 209387 transitions. Second operand 12 states. [2020-10-15 23:19:03,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:19:03,158 INFO L93 Difference]: Finished difference Result 92913 states and 454143 transitions. [2020-10-15 23:19:03,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:19:03,159 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-10-15 23:19:03,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:19:03,439 INFO L225 Difference]: With dead ends: 92913 [2020-10-15 23:19:03,439 INFO L226 Difference]: Without dead ends: 92836 [2020-10-15 23:19:03,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:19:05,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92836 states. [2020-10-15 23:19:06,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92836 to 40834. [2020-10-15 23:19:06,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40834 states. [2020-10-15 23:19:06,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40834 states to 40834 states and 218021 transitions. [2020-10-15 23:19:06,151 INFO L78 Accepts]: Start accepts. Automaton has 40834 states and 218021 transitions. Word has length 27 [2020-10-15 23:19:06,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:19:06,151 INFO L481 AbstractCegarLoop]: Abstraction has 40834 states and 218021 transitions. [2020-10-15 23:19:06,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 23:19:06,151 INFO L276 IsEmpty]: Start isEmpty. Operand 40834 states and 218021 transitions. [2020-10-15 23:19:06,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:19:06,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:19:06,156 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:19:06,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2020-10-15 23:19:06,366 INFO L429 AbstractCegarLoop]: === Iteration 65 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:19:06,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:19:06,366 INFO L82 PathProgramCache]: Analyzing trace with hash -947827339, now seen corresponding path program 19 times [2020-10-15 23:19:06,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:19:06,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33606606] [2020-10-15 23:19:06,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:19:06,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:19:06,480 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:19:06,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33606606] [2020-10-15 23:19:06,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:19:06,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 23:19:06,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974743317] [2020-10-15 23:19:06,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 23:19:06,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:19:06,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 23:19:06,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-15 23:19:06,482 INFO L87 Difference]: Start difference. First operand 40834 states and 218021 transitions. Second operand 11 states. [2020-10-15 23:19:09,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:19:09,971 INFO L93 Difference]: Finished difference Result 180696 states and 786321 transitions. [2020-10-15 23:19:09,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:19:09,972 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-15 23:19:09,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:19:10,462 INFO L225 Difference]: With dead ends: 180696 [2020-10-15 23:19:10,463 INFO L226 Difference]: Without dead ends: 180678 [2020-10-15 23:19:10,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1552 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-10-15 23:19:12,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180678 states. [2020-10-15 23:19:14,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180678 to 40673. [2020-10-15 23:19:14,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40673 states. [2020-10-15 23:19:15,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40673 states to 40673 states and 217228 transitions. [2020-10-15 23:19:15,068 INFO L78 Accepts]: Start accepts. Automaton has 40673 states and 217228 transitions. Word has length 27 [2020-10-15 23:19:15,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:19:15,069 INFO L481 AbstractCegarLoop]: Abstraction has 40673 states and 217228 transitions. [2020-10-15 23:19:15,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 23:19:15,069 INFO L276 IsEmpty]: Start isEmpty. Operand 40673 states and 217228 transitions. [2020-10-15 23:19:15,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:19:15,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:19:15,076 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:19:15,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2020-10-15 23:19:15,076 INFO L429 AbstractCegarLoop]: === Iteration 66 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:19:15,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:19:15,077 INFO L82 PathProgramCache]: Analyzing trace with hash -963570379, now seen corresponding path program 20 times [2020-10-15 23:19:15,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:19:15,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634338937] [2020-10-15 23:19:15,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:19:15,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:19:15,177 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:19:15,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634338937] [2020-10-15 23:19:15,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:19:15,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 23:19:15,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144497435] [2020-10-15 23:19:15,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 23:19:15,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:19:15,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 23:19:15,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-15 23:19:15,179 INFO L87 Difference]: Start difference. First operand 40673 states and 217228 transitions. Second operand 11 states. [2020-10-15 23:19:18,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:19:18,984 INFO L93 Difference]: Finished difference Result 180287 states and 784579 transitions. [2020-10-15 23:19:18,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:19:18,985 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-15 23:19:18,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:19:19,474 INFO L225 Difference]: With dead ends: 180287 [2020-10-15 23:19:19,474 INFO L226 Difference]: Without dead ends: 180263 [2020-10-15 23:19:19,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1559 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-10-15 23:19:21,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180263 states. [2020-10-15 23:19:23,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180263 to 40321. [2020-10-15 23:19:23,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40321 states. [2020-10-15 23:19:23,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40321 states to 40321 states and 215433 transitions. [2020-10-15 23:19:23,232 INFO L78 Accepts]: Start accepts. Automaton has 40321 states and 215433 transitions. Word has length 27 [2020-10-15 23:19:23,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:19:23,232 INFO L481 AbstractCegarLoop]: Abstraction has 40321 states and 215433 transitions. [2020-10-15 23:19:23,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 23:19:23,232 INFO L276 IsEmpty]: Start isEmpty. Operand 40321 states and 215433 transitions. [2020-10-15 23:19:23,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:19:23,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:19:23,237 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:19:23,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2020-10-15 23:19:23,238 INFO L429 AbstractCegarLoop]: === Iteration 67 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:19:23,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:19:23,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1412510069, now seen corresponding path program 21 times [2020-10-15 23:19:23,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:19:23,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657553845] [2020-10-15 23:19:23,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:19:23,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:19:23,347 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:19:23,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657553845] [2020-10-15 23:19:23,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:19:23,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 23:19:23,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779636090] [2020-10-15 23:19:23,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 23:19:23,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:19:23,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 23:19:23,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-15 23:19:23,348 INFO L87 Difference]: Start difference. First operand 40321 states and 215433 transitions. Second operand 11 states. [2020-10-15 23:19:27,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:19:27,348 INFO L93 Difference]: Finished difference Result 179815 states and 782456 transitions. [2020-10-15 23:19:27,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:19:27,349 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-15 23:19:27,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:19:27,842 INFO L225 Difference]: With dead ends: 179815 [2020-10-15 23:19:27,842 INFO L226 Difference]: Without dead ends: 179797 [2020-10-15 23:19:27,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1545 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-10-15 23:19:29,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179797 states. [2020-10-15 23:19:31,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179797 to 40030. [2020-10-15 23:19:31,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40030 states. [2020-10-15 23:19:31,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40030 states to 40030 states and 214096 transitions. [2020-10-15 23:19:31,574 INFO L78 Accepts]: Start accepts. Automaton has 40030 states and 214096 transitions. Word has length 27 [2020-10-15 23:19:31,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:19:31,575 INFO L481 AbstractCegarLoop]: Abstraction has 40030 states and 214096 transitions. [2020-10-15 23:19:31,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 23:19:31,575 INFO L276 IsEmpty]: Start isEmpty. Operand 40030 states and 214096 transitions. [2020-10-15 23:19:31,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:19:31,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:19:31,580 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:19:31,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2020-10-15 23:19:31,580 INFO L429 AbstractCegarLoop]: === Iteration 68 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:19:31,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:19:31,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1385815349, now seen corresponding path program 22 times [2020-10-15 23:19:31,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:19:31,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233345765] [2020-10-15 23:19:31,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:19:31,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:19:31,687 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:19:31,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233345765] [2020-10-15 23:19:31,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:19:31,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 23:19:31,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709351498] [2020-10-15 23:19:31,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 23:19:31,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:19:31,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 23:19:31,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-15 23:19:31,689 INFO L87 Difference]: Start difference. First operand 40030 states and 214096 transitions. Second operand 11 states. [2020-10-15 23:19:35,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:19:35,539 INFO L93 Difference]: Finished difference Result 179585 states and 781438 transitions. [2020-10-15 23:19:35,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:19:35,540 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-15 23:19:35,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:19:36,905 INFO L225 Difference]: With dead ends: 179585 [2020-10-15 23:19:36,905 INFO L226 Difference]: Without dead ends: 179561 [2020-10-15 23:19:36,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1535 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-10-15 23:19:38,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179561 states. [2020-10-15 23:19:40,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179561 to 39678. [2020-10-15 23:19:40,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39678 states. [2020-10-15 23:19:40,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39678 states to 39678 states and 212301 transitions. [2020-10-15 23:19:40,487 INFO L78 Accepts]: Start accepts. Automaton has 39678 states and 212301 transitions. Word has length 27 [2020-10-15 23:19:40,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:19:40,487 INFO L481 AbstractCegarLoop]: Abstraction has 39678 states and 212301 transitions. [2020-10-15 23:19:40,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 23:19:40,487 INFO L276 IsEmpty]: Start isEmpty. Operand 39678 states and 212301 transitions. [2020-10-15 23:19:40,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:19:40,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:19:40,492 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:19:40,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2020-10-15 23:19:40,492 INFO L429 AbstractCegarLoop]: === Iteration 69 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:19:40,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:19:40,493 INFO L82 PathProgramCache]: Analyzing trace with hash -847392523, now seen corresponding path program 23 times [2020-10-15 23:19:40,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:19:40,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695340729] [2020-10-15 23:19:40,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:19:40,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:19:40,604 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:19:40,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695340729] [2020-10-15 23:19:40,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:19:40,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 23:19:40,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782667589] [2020-10-15 23:19:40,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 23:19:40,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:19:40,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 23:19:40,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-15 23:19:40,605 INFO L87 Difference]: Start difference. First operand 39678 states and 212301 transitions. Second operand 11 states. [2020-10-15 23:19:44,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:19:44,456 INFO L93 Difference]: Finished difference Result 179113 states and 779315 transitions. [2020-10-15 23:19:44,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:19:44,457 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-15 23:19:44,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:19:44,952 INFO L225 Difference]: With dead ends: 179113 [2020-10-15 23:19:44,953 INFO L226 Difference]: Without dead ends: 179095 [2020-10-15 23:19:44,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1556 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-10-15 23:19:47,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179095 states. [2020-10-15 23:19:49,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179095 to 39387. [2020-10-15 23:19:49,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39387 states. [2020-10-15 23:19:49,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39387 states to 39387 states and 210964 transitions. [2020-10-15 23:19:49,354 INFO L78 Accepts]: Start accepts. Automaton has 39387 states and 210964 transitions. Word has length 27 [2020-10-15 23:19:49,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:19:49,355 INFO L481 AbstractCegarLoop]: Abstraction has 39387 states and 210964 transitions. [2020-10-15 23:19:49,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 23:19:49,355 INFO L276 IsEmpty]: Start isEmpty. Operand 39387 states and 210964 transitions. [2020-10-15 23:19:49,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:19:49,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:19:49,360 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:19:49,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2020-10-15 23:19:49,360 INFO L429 AbstractCegarLoop]: === Iteration 70 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:19:49,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:19:49,360 INFO L82 PathProgramCache]: Analyzing trace with hash -858344203, now seen corresponding path program 24 times [2020-10-15 23:19:49,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:19:49,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20760950] [2020-10-15 23:19:49,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:19:49,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:19:49,466 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:19:49,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20760950] [2020-10-15 23:19:49,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:19:49,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 23:19:49,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354446252] [2020-10-15 23:19:49,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 23:19:49,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:19:49,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 23:19:49,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-15 23:19:49,468 INFO L87 Difference]: Start difference. First operand 39387 states and 210964 transitions. Second operand 11 states. [2020-10-15 23:19:53,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:19:53,456 INFO L93 Difference]: Finished difference Result 178704 states and 777573 transitions. [2020-10-15 23:19:53,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:19:53,457 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-15 23:19:53,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:19:53,958 INFO L225 Difference]: With dead ends: 178704 [2020-10-15 23:19:53,958 INFO L226 Difference]: Without dead ends: 178675 [2020-10-15 23:19:53,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1543 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-10-15 23:19:55,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178675 states. [2020-10-15 23:19:58,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178675 to 38805. [2020-10-15 23:19:58,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38805 states. [2020-10-15 23:19:58,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38805 states to 38805 states and 208284 transitions. [2020-10-15 23:19:58,533 INFO L78 Accepts]: Start accepts. Automaton has 38805 states and 208284 transitions. Word has length 27 [2020-10-15 23:19:58,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:19:58,533 INFO L481 AbstractCegarLoop]: Abstraction has 38805 states and 208284 transitions. [2020-10-15 23:19:58,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 23:19:58,534 INFO L276 IsEmpty]: Start isEmpty. Operand 38805 states and 208284 transitions. [2020-10-15 23:19:58,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:19:58,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:19:58,539 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:19:58,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2020-10-15 23:19:58,539 INFO L429 AbstractCegarLoop]: === Iteration 71 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:19:58,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:19:58,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1294328210, now seen corresponding path program 2 times [2020-10-15 23:19:58,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:19:58,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484918425] [2020-10-15 23:19:58,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:19:58,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:19:58,598 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 23:19:58,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484918425] [2020-10-15 23:19:58,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:19:58,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 23:19:58,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321774922] [2020-10-15 23:19:58,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 23:19:58,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:19:58,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 23:19:58,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:19:58,600 INFO L87 Difference]: Start difference. First operand 38805 states and 208284 transitions. Second operand 7 states. [2020-10-15 23:19:59,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:19:59,576 INFO L93 Difference]: Finished difference Result 90966 states and 445145 transitions. [2020-10-15 23:19:59,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:19:59,577 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-10-15 23:19:59,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:19:59,858 INFO L225 Difference]: With dead ends: 90966 [2020-10-15 23:19:59,858 INFO L226 Difference]: Without dead ends: 90889 [2020-10-15 23:19:59,859 INFO L677 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 [2020-10-15 23:20:00,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90889 states. [2020-10-15 23:20:01,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90889 to 40453. [2020-10-15 23:20:01,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40453 states. [2020-10-15 23:20:02,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40453 states to 40453 states and 217061 transitions. [2020-10-15 23:20:02,094 INFO L78 Accepts]: Start accepts. Automaton has 40453 states and 217061 transitions. Word has length 27 [2020-10-15 23:20:02,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:20:02,094 INFO L481 AbstractCegarLoop]: Abstraction has 40453 states and 217061 transitions. [2020-10-15 23:20:02,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 23:20:02,095 INFO L276 IsEmpty]: Start isEmpty. Operand 40453 states and 217061 transitions. [2020-10-15 23:20:02,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:20:02,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:20:02,100 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:20:02,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2020-10-15 23:20:02,100 INFO L429 AbstractCegarLoop]: === Iteration 72 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:20:02,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:20:02,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1294339618, now seen corresponding path program 2 times [2020-10-15 23:20:02,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:20:02,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712799823] [2020-10-15 23:20:02,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:20:02,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:20:02,160 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 23:20:02,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712799823] [2020-10-15 23:20:02,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:20:02,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 23:20:02,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954043774] [2020-10-15 23:20:02,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 23:20:02,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:20:02,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 23:20:02,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:20:02,161 INFO L87 Difference]: Start difference. First operand 40453 states and 217061 transitions. Second operand 7 states. [2020-10-15 23:20:03,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:20:03,061 INFO L93 Difference]: Finished difference Result 91560 states and 447373 transitions. [2020-10-15 23:20:03,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:20:03,063 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-10-15 23:20:03,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:20:03,350 INFO L225 Difference]: With dead ends: 91560 [2020-10-15 23:20:03,350 INFO L226 Difference]: Without dead ends: 91483 [2020-10-15 23:20:03,350 INFO L677 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 [2020-10-15 23:20:04,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91483 states. [2020-10-15 23:20:06,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91483 to 41467. [2020-10-15 23:20:06,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41467 states. [2020-10-15 23:20:06,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41467 states to 41467 states and 222391 transitions. [2020-10-15 23:20:06,430 INFO L78 Accepts]: Start accepts. Automaton has 41467 states and 222391 transitions. Word has length 27 [2020-10-15 23:20:06,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:20:06,431 INFO L481 AbstractCegarLoop]: Abstraction has 41467 states and 222391 transitions. [2020-10-15 23:20:06,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 23:20:06,431 INFO L276 IsEmpty]: Start isEmpty. Operand 41467 states and 222391 transitions. [2020-10-15 23:20:06,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:20:06,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:20:06,436 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:20:06,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2020-10-15 23:20:06,436 INFO L429 AbstractCegarLoop]: === Iteration 73 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:20:06,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:20:06,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1294356017, now seen corresponding path program 2 times [2020-10-15 23:20:06,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:20:06,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725657044] [2020-10-15 23:20:06,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:20:06,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:20:06,493 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 23:20:06,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725657044] [2020-10-15 23:20:06,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:20:06,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 23:20:06,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748715217] [2020-10-15 23:20:06,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 23:20:06,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:20:06,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 23:20:06,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:20:06,494 INFO L87 Difference]: Start difference. First operand 41467 states and 222391 transitions. Second operand 7 states. [2020-10-15 23:20:07,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:20:07,449 INFO L93 Difference]: Finished difference Result 92674 states and 452263 transitions. [2020-10-15 23:20:07,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:20:07,450 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-10-15 23:20:07,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:20:07,730 INFO L225 Difference]: With dead ends: 92674 [2020-10-15 23:20:07,730 INFO L226 Difference]: Without dead ends: 92597 [2020-10-15 23:20:07,730 INFO L677 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 [2020-10-15 23:20:08,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92597 states. [2020-10-15 23:20:09,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92597 to 42564. [2020-10-15 23:20:09,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42564 states. [2020-10-15 23:20:09,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42564 states to 42564 states and 227862 transitions. [2020-10-15 23:20:09,988 INFO L78 Accepts]: Start accepts. Automaton has 42564 states and 227862 transitions. Word has length 27 [2020-10-15 23:20:09,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:20:09,988 INFO L481 AbstractCegarLoop]: Abstraction has 42564 states and 227862 transitions. [2020-10-15 23:20:09,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 23:20:09,988 INFO L276 IsEmpty]: Start isEmpty. Operand 42564 states and 227862 transitions. [2020-10-15 23:20:09,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:20:09,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:20:09,994 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:20:09,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2020-10-15 23:20:09,994 INFO L429 AbstractCegarLoop]: === Iteration 74 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:20:09,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:20:09,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1294335650, now seen corresponding path program 2 times [2020-10-15 23:20:09,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:20:09,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10380670] [2020-10-15 23:20:09,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:20:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:20:10,052 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 23:20:10,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10380670] [2020-10-15 23:20:10,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:20:10,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 23:20:10,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084307896] [2020-10-15 23:20:10,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 23:20:10,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:20:10,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 23:20:10,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:20:10,054 INFO L87 Difference]: Start difference. First operand 42564 states and 227862 transitions. Second operand 7 states. [2020-10-15 23:20:11,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:20:11,016 INFO L93 Difference]: Finished difference Result 93922 states and 458312 transitions. [2020-10-15 23:20:11,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:20:11,017 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-10-15 23:20:11,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:20:11,310 INFO L225 Difference]: With dead ends: 93922 [2020-10-15 23:20:11,310 INFO L226 Difference]: Without dead ends: 93845 [2020-10-15 23:20:11,310 INFO L677 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 [2020-10-15 23:20:12,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93845 states. [2020-10-15 23:20:13,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93845 to 43794. [2020-10-15 23:20:13,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43794 states. [2020-10-15 23:20:13,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43794 states to 43794 states and 233791 transitions. [2020-10-15 23:20:13,677 INFO L78 Accepts]: Start accepts. Automaton has 43794 states and 233791 transitions. Word has length 27 [2020-10-15 23:20:13,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:20:13,677 INFO L481 AbstractCegarLoop]: Abstraction has 43794 states and 233791 transitions. [2020-10-15 23:20:13,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 23:20:13,677 INFO L276 IsEmpty]: Start isEmpty. Operand 43794 states and 233791 transitions. [2020-10-15 23:20:13,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:20:13,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:20:13,684 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:20:13,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2020-10-15 23:20:13,684 INFO L429 AbstractCegarLoop]: === Iteration 75 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:20:13,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:20:13,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1919686780, now seen corresponding path program 1 times [2020-10-15 23:20:13,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:20:13,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320884289] [2020-10-15 23:20:13,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:20:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:20:13,772 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:20:13,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320884289] [2020-10-15 23:20:13,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59387679] [2020-10-15 23:20:13,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:20:14,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:20:14,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:20:14,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:20:14,669 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:20:14,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:20:14,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:20:14,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829982051] [2020-10-15 23:20:14,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:20:14,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:20:14,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:20:14,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:20:14,671 INFO L87 Difference]: Start difference. First operand 43794 states and 233791 transitions. Second operand 16 states. [2020-10-15 23:20:16,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:20:16,743 INFO L93 Difference]: Finished difference Result 140781 states and 654227 transitions. [2020-10-15 23:20:16,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:20:16,744 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:20:16,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:20:17,157 INFO L225 Difference]: With dead ends: 140781 [2020-10-15 23:20:17,157 INFO L226 Difference]: Without dead ends: 140737 [2020-10-15 23:20:17,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:20:18,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140737 states. [2020-10-15 23:20:20,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140737 to 43602. [2020-10-15 23:20:20,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43602 states. [2020-10-15 23:20:20,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43602 states to 43602 states and 232379 transitions. [2020-10-15 23:20:20,243 INFO L78 Accepts]: Start accepts. Automaton has 43602 states and 232379 transitions. Word has length 29 [2020-10-15 23:20:20,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:20:20,243 INFO L481 AbstractCegarLoop]: Abstraction has 43602 states and 232379 transitions. [2020-10-15 23:20:20,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:20:20,243 INFO L276 IsEmpty]: Start isEmpty. Operand 43602 states and 232379 transitions. [2020-10-15 23:20:20,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:20:20,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:20:20,250 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:20:20,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:20:20,451 INFO L429 AbstractCegarLoop]: === Iteration 76 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:20:20,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:20:20,452 INFO L82 PathProgramCache]: Analyzing trace with hash -422590804, now seen corresponding path program 1 times [2020-10-15 23:20:20,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:20:20,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979913924] [2020-10-15 23:20:20,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:20:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:20:20,532 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:20:20,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979913924] [2020-10-15 23:20:20,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549408604] [2020-10-15 23:20:20,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:20:20,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:20:20,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:20:20,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:20:20,747 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:20:20,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:20:20,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:20:20,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403884861] [2020-10-15 23:20:20,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:20:20,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:20:20,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:20:20,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:20:20,749 INFO L87 Difference]: Start difference. First operand 43602 states and 232379 transitions. Second operand 16 states. [2020-10-15 23:20:22,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:20:22,746 INFO L93 Difference]: Finished difference Result 139468 states and 647412 transitions. [2020-10-15 23:20:22,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:20:22,747 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:20:22,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:20:23,157 INFO L225 Difference]: With dead ends: 139468 [2020-10-15 23:20:23,157 INFO L226 Difference]: Without dead ends: 139424 [2020-10-15 23:20:23,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:20:25,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139424 states. [2020-10-15 23:20:26,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139424 to 43506. [2020-10-15 23:20:26,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43506 states. [2020-10-15 23:20:26,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43506 states to 43506 states and 231546 transitions. [2020-10-15 23:20:26,868 INFO L78 Accepts]: Start accepts. Automaton has 43506 states and 231546 transitions. Word has length 29 [2020-10-15 23:20:26,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:20:26,868 INFO L481 AbstractCegarLoop]: Abstraction has 43506 states and 231546 transitions. [2020-10-15 23:20:26,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:20:26,868 INFO L276 IsEmpty]: Start isEmpty. Operand 43506 states and 231546 transitions. [2020-10-15 23:20:26,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:20:26,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:20:26,876 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:20:27,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:20:27,077 INFO L429 AbstractCegarLoop]: === Iteration 77 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:20:27,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:20:27,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1608517554, now seen corresponding path program 1 times [2020-10-15 23:20:27,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:20:27,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116101407] [2020-10-15 23:20:27,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:20:27,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:20:27,159 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:20:27,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116101407] [2020-10-15 23:20:27,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196382326] [2020-10-15 23:20:27,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:20:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:20:27,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:20:27,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:20:27,382 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:20:27,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:20:27,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:20:27,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080514164] [2020-10-15 23:20:27,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:20:27,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:20:27,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:20:27,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:20:27,383 INFO L87 Difference]: Start difference. First operand 43506 states and 231546 transitions. Second operand 16 states. [2020-10-15 23:20:29,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:20:29,451 INFO L93 Difference]: Finished difference Result 138170 states and 641113 transitions. [2020-10-15 23:20:29,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:20:29,452 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:20:29,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:20:29,863 INFO L225 Difference]: With dead ends: 138170 [2020-10-15 23:20:29,863 INFO L226 Difference]: Without dead ends: 138126 [2020-10-15 23:20:29,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:20:31,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138126 states. [2020-10-15 23:20:32,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138126 to 43481. [2020-10-15 23:20:32,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43481 states. [2020-10-15 23:20:32,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43481 states to 43481 states and 231123 transitions. [2020-10-15 23:20:32,982 INFO L78 Accepts]: Start accepts. Automaton has 43481 states and 231123 transitions. Word has length 29 [2020-10-15 23:20:32,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:20:32,982 INFO L481 AbstractCegarLoop]: Abstraction has 43481 states and 231123 transitions. [2020-10-15 23:20:32,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:20:32,982 INFO L276 IsEmpty]: Start isEmpty. Operand 43481 states and 231123 transitions. [2020-10-15 23:20:32,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:20:32,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:20:32,990 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:20:33,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,78 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:20:33,191 INFO L429 AbstractCegarLoop]: === Iteration 78 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:20:33,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:20:33,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1153508284, now seen corresponding path program 2 times [2020-10-15 23:20:33,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:20:33,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051991987] [2020-10-15 23:20:33,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:20:33,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:20:33,274 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-15 23:20:33,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051991987] [2020-10-15 23:20:33,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643045070] [2020-10-15 23:20:33,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:20:33,359 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 23:20:33,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:20:33,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:20:33,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:20:34,168 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-15 23:20:34,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:20:34,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:20:34,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685551123] [2020-10-15 23:20:34,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:20:34,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:20:34,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:20:34,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:20:34,169 INFO L87 Difference]: Start difference. First operand 43481 states and 231123 transitions. Second operand 16 states. [2020-10-15 23:20:36,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:20:36,323 INFO L93 Difference]: Finished difference Result 135919 states and 629813 transitions. [2020-10-15 23:20:36,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:20:36,324 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:20:36,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:20:36,718 INFO L225 Difference]: With dead ends: 135919 [2020-10-15 23:20:36,719 INFO L226 Difference]: Without dead ends: 135873 [2020-10-15 23:20:36,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:20:38,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135873 states. [2020-10-15 23:20:39,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135873 to 43684. [2020-10-15 23:20:39,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43684 states. [2020-10-15 23:20:39,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43684 states to 43684 states and 232067 transitions. [2020-10-15 23:20:39,788 INFO L78 Accepts]: Start accepts. Automaton has 43684 states and 232067 transitions. Word has length 29 [2020-10-15 23:20:39,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:20:39,788 INFO L481 AbstractCegarLoop]: Abstraction has 43684 states and 232067 transitions. [2020-10-15 23:20:39,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:20:39,788 INFO L276 IsEmpty]: Start isEmpty. Operand 43684 states and 232067 transitions. [2020-10-15 23:20:39,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:20:39,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:20:39,796 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:20:39,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:20:39,997 INFO L429 AbstractCegarLoop]: === Iteration 79 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:20:39,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:20:39,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1153496876, now seen corresponding path program 2 times [2020-10-15 23:20:39,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:20:39,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785677224] [2020-10-15 23:20:39,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:20:40,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:20:40,077 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-15 23:20:40,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785677224] [2020-10-15 23:20:40,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679092396] [2020-10-15 23:20:40,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:20:40,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 23:20:40,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:20:40,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:20:40,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:20:40,340 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-15 23:20:40,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:20:40,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:20:40,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067598541] [2020-10-15 23:20:40,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:20:40,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:20:40,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:20:40,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:20:40,342 INFO L87 Difference]: Start difference. First operand 43684 states and 232067 transitions. Second operand 16 states. [2020-10-15 23:20:42,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:20:42,868 INFO L93 Difference]: Finished difference Result 134838 states and 624786 transitions. [2020-10-15 23:20:42,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:20:42,869 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:20:42,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:20:43,270 INFO L225 Difference]: With dead ends: 134838 [2020-10-15 23:20:43,270 INFO L226 Difference]: Without dead ends: 134792 [2020-10-15 23:20:43,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:20:44,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134792 states. [2020-10-15 23:20:46,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134792 to 43622. [2020-10-15 23:20:46,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43622 states. [2020-10-15 23:20:47,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43622 states to 43622 states and 231628 transitions. [2020-10-15 23:20:47,044 INFO L78 Accepts]: Start accepts. Automaton has 43622 states and 231628 transitions. Word has length 29 [2020-10-15 23:20:47,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:20:47,044 INFO L481 AbstractCegarLoop]: Abstraction has 43622 states and 231628 transitions. [2020-10-15 23:20:47,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:20:47,044 INFO L276 IsEmpty]: Start isEmpty. Operand 43622 states and 231628 transitions. [2020-10-15 23:20:47,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:20:47,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:20:47,052 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:20:47,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:20:47,258 INFO L429 AbstractCegarLoop]: === Iteration 80 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:20:47,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:20:47,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1153500844, now seen corresponding path program 2 times [2020-10-15 23:20:47,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:20:47,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68278196] [2020-10-15 23:20:47,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:20:47,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:20:47,342 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-15 23:20:47,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68278196] [2020-10-15 23:20:47,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521747664] [2020-10-15 23:20:47,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:20:47,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 23:20:47,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:20:47,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:20:47,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:20:47,622 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-15 23:20:47,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:20:47,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:20:47,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215168537] [2020-10-15 23:20:47,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:20:47,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:20:47,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:20:47,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:20:47,624 INFO L87 Difference]: Start difference. First operand 43622 states and 231628 transitions. Second operand 16 states. [2020-10-15 23:20:49,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:20:49,860 INFO L93 Difference]: Finished difference Result 133406 states and 618320 transitions. [2020-10-15 23:20:49,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:20:49,861 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:20:49,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:20:50,254 INFO L225 Difference]: With dead ends: 133406 [2020-10-15 23:20:50,255 INFO L226 Difference]: Without dead ends: 133360 [2020-10-15 23:20:50,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:20:51,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133360 states. [2020-10-15 23:20:53,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133360 to 43128. [2020-10-15 23:20:53,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43128 states. [2020-10-15 23:20:53,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43128 states to 43128 states and 228903 transitions. [2020-10-15 23:20:53,279 INFO L78 Accepts]: Start accepts. Automaton has 43128 states and 228903 transitions. Word has length 29 [2020-10-15 23:20:53,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:20:53,279 INFO L481 AbstractCegarLoop]: Abstraction has 43128 states and 228903 transitions. [2020-10-15 23:20:53,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:20:53,279 INFO L276 IsEmpty]: Start isEmpty. Operand 43128 states and 228903 transitions. [2020-10-15 23:20:53,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:20:53,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:20:53,288 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:20:53,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:20:53,488 INFO L429 AbstractCegarLoop]: === Iteration 81 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:20:53,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:20:53,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1591871556, now seen corresponding path program 3 times [2020-10-15 23:20:53,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:20:53,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202978824] [2020-10-15 23:20:53,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:20:53,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:20:53,571 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-15 23:20:53,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202978824] [2020-10-15 23:20:53,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475290572] [2020-10-15 23:20:53,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:20:53,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-10-15 23:20:53,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:20:53,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:20:53,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:20:53,814 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-15 23:20:53,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:20:53,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:20:53,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864408392] [2020-10-15 23:20:53,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:20:53,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:20:53,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:20:53,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:20:53,816 INFO L87 Difference]: Start difference. First operand 43128 states and 228903 transitions. Second operand 16 states. [2020-10-15 23:20:56,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:20:56,328 INFO L93 Difference]: Finished difference Result 135323 states and 626681 transitions. [2020-10-15 23:20:56,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:20:56,329 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:20:56,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:20:56,725 INFO L225 Difference]: With dead ends: 135323 [2020-10-15 23:20:56,725 INFO L226 Difference]: Without dead ends: 135279 [2020-10-15 23:20:56,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:20:57,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135279 states. [2020-10-15 23:20:59,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135279 to 42900. [2020-10-15 23:20:59,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42900 states. [2020-10-15 23:20:59,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42900 states to 42900 states and 227522 transitions. [2020-10-15 23:20:59,700 INFO L78 Accepts]: Start accepts. Automaton has 42900 states and 227522 transitions. Word has length 29 [2020-10-15 23:20:59,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:20:59,701 INFO L481 AbstractCegarLoop]: Abstraction has 42900 states and 227522 transitions. [2020-10-15 23:20:59,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:20:59,701 INFO L276 IsEmpty]: Start isEmpty. Operand 42900 states and 227522 transitions. [2020-10-15 23:20:59,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:20:59,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:20:59,709 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:20:59,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:20:59,910 INFO L429 AbstractCegarLoop]: === Iteration 82 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:20:59,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:20:59,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1973162059, now seen corresponding path program 1 times [2020-10-15 23:20:59,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:20:59,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513896677] [2020-10-15 23:20:59,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:20:59,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:20:59,996 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:20:59,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513896677] [2020-10-15 23:20:59,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034835210] [2020-10-15 23:20:59,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:21:00,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:21:00,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:21:00,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:21:00,218 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:21:00,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:21:00,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:21:00,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306616500] [2020-10-15 23:21:00,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:21:00,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:21:00,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:21:00,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:21:00,220 INFO L87 Difference]: Start difference. First operand 42900 states and 227522 transitions. Second operand 16 states. [2020-10-15 23:21:02,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:21:02,199 INFO L93 Difference]: Finished difference Result 141153 states and 654921 transitions. [2020-10-15 23:21:02,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:21:02,200 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:21:02,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:21:02,631 INFO L225 Difference]: With dead ends: 141153 [2020-10-15 23:21:02,631 INFO L226 Difference]: Without dead ends: 141109 [2020-10-15 23:21:02,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:21:03,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141109 states. [2020-10-15 23:21:06,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141109 to 42878. [2020-10-15 23:21:06,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42878 states. [2020-10-15 23:21:06,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42878 states to 42878 states and 227112 transitions. [2020-10-15 23:21:06,481 INFO L78 Accepts]: Start accepts. Automaton has 42878 states and 227112 transitions. Word has length 29 [2020-10-15 23:21:06,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:21:06,481 INFO L481 AbstractCegarLoop]: Abstraction has 42878 states and 227112 transitions. [2020-10-15 23:21:06,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:21:06,481 INFO L276 IsEmpty]: Start isEmpty. Operand 42878 states and 227112 transitions. [2020-10-15 23:21:06,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:21:06,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:21:06,490 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:21:06,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2020-10-15 23:21:06,690 INFO L429 AbstractCegarLoop]: === Iteration 83 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:21:06,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:21:06,691 INFO L82 PathProgramCache]: Analyzing trace with hash -290696879, now seen corresponding path program 1 times [2020-10-15 23:21:06,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:21:06,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455630688] [2020-10-15 23:21:06,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:21:06,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:21:06,777 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:21:06,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455630688] [2020-10-15 23:21:06,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379398340] [2020-10-15 23:21:06,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:21:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:21:06,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:21:06,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:21:07,000 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:21:07,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:21:07,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:21:07,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499483618] [2020-10-15 23:21:07,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:21:07,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:21:07,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:21:07,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:21:07,002 INFO L87 Difference]: Start difference. First operand 42878 states and 227112 transitions. Second operand 16 states. [2020-10-15 23:21:09,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:21:09,051 INFO L93 Difference]: Finished difference Result 139558 states and 647187 transitions. [2020-10-15 23:21:09,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:21:09,052 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:21:09,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:21:09,478 INFO L225 Difference]: With dead ends: 139558 [2020-10-15 23:21:09,478 INFO L226 Difference]: Without dead ends: 139514 [2020-10-15 23:21:09,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:21:10,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139514 states. [2020-10-15 23:21:12,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139514 to 42856. [2020-10-15 23:21:12,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42856 states. [2020-10-15 23:21:12,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42856 states to 42856 states and 226689 transitions. [2020-10-15 23:21:12,535 INFO L78 Accepts]: Start accepts. Automaton has 42856 states and 226689 transitions. Word has length 29 [2020-10-15 23:21:12,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:21:12,535 INFO L481 AbstractCegarLoop]: Abstraction has 42856 states and 226689 transitions. [2020-10-15 23:21:12,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:21:12,535 INFO L276 IsEmpty]: Start isEmpty. Operand 42856 states and 226689 transitions. [2020-10-15 23:21:12,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:21:12,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:21:12,543 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:21:12,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2020-10-15 23:21:12,744 INFO L429 AbstractCegarLoop]: === Iteration 84 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:21:12,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:21:12,745 INFO L82 PathProgramCache]: Analyzing trace with hash -745717557, now seen corresponding path program 2 times [2020-10-15 23:21:12,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:21:12,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031339859] [2020-10-15 23:21:12,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:21:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:21:12,828 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-15 23:21:12,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031339859] [2020-10-15 23:21:12,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660844730] [2020-10-15 23:21:12,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:21:12,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 23:21:12,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:21:12,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:21:12,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:21:13,060 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-15 23:21:13,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:21:13,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:21:13,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394552036] [2020-10-15 23:21:13,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:21:13,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:21:13,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:21:13,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:21:13,062 INFO L87 Difference]: Start difference. First operand 42856 states and 226689 transitions. Second operand 16 states. [2020-10-15 23:21:15,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:21:15,246 INFO L93 Difference]: Finished difference Result 137680 states and 637585 transitions. [2020-10-15 23:21:15,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:21:15,247 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:21:15,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:21:16,462 INFO L225 Difference]: With dead ends: 137680 [2020-10-15 23:21:16,463 INFO L226 Difference]: Without dead ends: 137630 [2020-10-15 23:21:16,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:21:17,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137630 states. [2020-10-15 23:21:19,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137630 to 42997. [2020-10-15 23:21:19,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42997 states. [2020-10-15 23:21:19,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42997 states to 42997 states and 227356 transitions. [2020-10-15 23:21:19,377 INFO L78 Accepts]: Start accepts. Automaton has 42997 states and 227356 transitions. Word has length 29 [2020-10-15 23:21:19,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:21:19,377 INFO L481 AbstractCegarLoop]: Abstraction has 42997 states and 227356 transitions. [2020-10-15 23:21:19,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:21:19,377 INFO L276 IsEmpty]: Start isEmpty. Operand 42997 states and 227356 transitions. [2020-10-15 23:21:19,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:21:19,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:21:19,385 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:21:19,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2020-10-15 23:21:19,586 INFO L429 AbstractCegarLoop]: === Iteration 85 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:21:19,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:21:19,587 INFO L82 PathProgramCache]: Analyzing trace with hash -745733956, now seen corresponding path program 4 times [2020-10-15 23:21:19,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:21:19,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357076206] [2020-10-15 23:21:19,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:21:19,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:21:19,685 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-15 23:21:19,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357076206] [2020-10-15 23:21:19,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244937069] [2020-10-15 23:21:19,686 INFO L93 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 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:21:19,775 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 23:21:19,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:21:19,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:21:19,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:21:19,919 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-15 23:21:19,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:21:19,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:21:19,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394449282] [2020-10-15 23:21:19,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:21:19,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:21:19,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:21:19,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:21:19,921 INFO L87 Difference]: Start difference. First operand 42997 states and 227356 transitions. Second operand 16 states. [2020-10-15 23:21:22,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:21:22,183 INFO L93 Difference]: Finished difference Result 134425 states and 621844 transitions. [2020-10-15 23:21:22,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:21:22,184 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:21:22,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:21:22,583 INFO L225 Difference]: With dead ends: 134425 [2020-10-15 23:21:22,583 INFO L226 Difference]: Without dead ends: 134379 [2020-10-15 23:21:22,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:21:23,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134379 states. [2020-10-15 23:21:25,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134379 to 42935. [2020-10-15 23:21:25,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42935 states. [2020-10-15 23:21:26,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42935 states to 42935 states and 226917 transitions. [2020-10-15 23:21:26,655 INFO L78 Accepts]: Start accepts. Automaton has 42935 states and 226917 transitions. Word has length 29 [2020-10-15 23:21:26,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:21:26,655 INFO L481 AbstractCegarLoop]: Abstraction has 42935 states and 226917 transitions. [2020-10-15 23:21:26,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:21:26,655 INFO L276 IsEmpty]: Start isEmpty. Operand 42935 states and 226917 transitions. [2020-10-15 23:21:26,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:21:26,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:21:26,664 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:21:26,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:21:26,865 INFO L429 AbstractCegarLoop]: === Iteration 86 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:21:26,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:21:26,865 INFO L82 PathProgramCache]: Analyzing trace with hash -745713589, now seen corresponding path program 2 times [2020-10-15 23:21:26,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:21:26,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205108057] [2020-10-15 23:21:26,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:21:26,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:21:26,947 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-15 23:21:26,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205108057] [2020-10-15 23:21:26,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29360166] [2020-10-15 23:21:26,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:21:27,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 23:21:27,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:21:27,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:21:27,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:21:27,180 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-15 23:21:27,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:21:27,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:21:27,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360381149] [2020-10-15 23:21:27,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:21:27,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:21:27,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:21:27,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:21:27,181 INFO L87 Difference]: Start difference. First operand 42935 states and 226917 transitions. Second operand 16 states. [2020-10-15 23:21:29,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:21:29,229 INFO L93 Difference]: Finished difference Result 135137 states and 625997 transitions. [2020-10-15 23:21:29,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:21:29,231 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:21:29,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:21:29,640 INFO L225 Difference]: With dead ends: 135137 [2020-10-15 23:21:29,640 INFO L226 Difference]: Without dead ends: 135087 [2020-10-15 23:21:29,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:21:30,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135087 states. [2020-10-15 23:21:32,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135087 to 42336. [2020-10-15 23:21:32,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42336 states. [2020-10-15 23:21:32,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42336 states to 42336 states and 223739 transitions. [2020-10-15 23:21:32,695 INFO L78 Accepts]: Start accepts. Automaton has 42336 states and 223739 transitions. Word has length 29 [2020-10-15 23:21:32,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:21:32,695 INFO L481 AbstractCegarLoop]: Abstraction has 42336 states and 223739 transitions. [2020-10-15 23:21:32,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:21:32,695 INFO L276 IsEmpty]: Start isEmpty. Operand 42336 states and 223739 transitions. [2020-10-15 23:21:32,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:21:32,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:21:32,703 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:21:32,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable160 [2020-10-15 23:21:32,910 INFO L429 AbstractCegarLoop]: === Iteration 87 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:21:32,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:21:32,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1865067275, now seen corresponding path program 3 times [2020-10-15 23:21:32,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:21:32,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808132162] [2020-10-15 23:21:32,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:21:32,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:21:32,992 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:21:32,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808132162] [2020-10-15 23:21:32,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183702816] [2020-10-15 23:21:32,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:21:33,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-15 23:21:33,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:21:33,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:21:33,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:21:33,222 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:21:33,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:21:33,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:21:33,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492896200] [2020-10-15 23:21:33,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:21:33,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:21:33,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:21:33,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:21:33,224 INFO L87 Difference]: Start difference. First operand 42336 states and 223739 transitions. Second operand 16 states. [2020-10-15 23:21:35,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:21:35,215 INFO L93 Difference]: Finished difference Result 136349 states and 630987 transitions. [2020-10-15 23:21:35,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:21:35,216 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:21:35,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:21:35,620 INFO L225 Difference]: With dead ends: 136349 [2020-10-15 23:21:35,620 INFO L226 Difference]: Without dead ends: 136305 [2020-10-15 23:21:35,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:21:37,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136305 states. [2020-10-15 23:21:39,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136305 to 42186. [2020-10-15 23:21:39,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42186 states. [2020-10-15 23:21:39,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42186 states to 42186 states and 222832 transitions. [2020-10-15 23:21:39,305 INFO L78 Accepts]: Start accepts. Automaton has 42186 states and 222832 transitions. Word has length 29 [2020-10-15 23:21:39,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:21:39,305 INFO L481 AbstractCegarLoop]: Abstraction has 42186 states and 222832 transitions. [2020-10-15 23:21:39,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:21:39,305 INFO L276 IsEmpty]: Start isEmpty. Operand 42186 states and 222832 transitions. [2020-10-15 23:21:39,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:21:39,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:21:39,314 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:21:39,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable161 [2020-10-15 23:21:39,514 INFO L429 AbstractCegarLoop]: === Iteration 88 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:21:39,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:21:39,515 INFO L82 PathProgramCache]: Analyzing trace with hash 2041985324, now seen corresponding path program 3 times [2020-10-15 23:21:39,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:21:39,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447753269] [2020-10-15 23:21:39,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:21:39,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:21:39,594 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:21:39,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447753269] [2020-10-15 23:21:39,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096947519] [2020-10-15 23:21:39,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:21:39,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-15 23:21:39,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:21:39,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:21:39,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:21:39,818 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:21:39,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:21:39,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:21:39,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672556951] [2020-10-15 23:21:39,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:21:39,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:21:39,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:21:39,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:21:39,820 INFO L87 Difference]: Start difference. First operand 42186 states and 222832 transitions. Second operand 16 states. [2020-10-15 23:21:42,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:21:42,103 INFO L93 Difference]: Finished difference Result 135812 states and 628090 transitions. [2020-10-15 23:21:42,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:21:42,104 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:21:42,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:21:42,500 INFO L225 Difference]: With dead ends: 135812 [2020-10-15 23:21:42,500 INFO L226 Difference]: Without dead ends: 135768 [2020-10-15 23:21:42,500 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:21:43,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135768 states. [2020-10-15 23:21:45,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135768 to 42079. [2020-10-15 23:21:45,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42079 states. [2020-10-15 23:21:45,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42079 states to 42079 states and 222233 transitions. [2020-10-15 23:21:45,477 INFO L78 Accepts]: Start accepts. Automaton has 42079 states and 222233 transitions. Word has length 29 [2020-10-15 23:21:45,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:21:45,477 INFO L481 AbstractCegarLoop]: Abstraction has 42079 states and 222233 transitions. [2020-10-15 23:21:45,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:21:45,478 INFO L276 IsEmpty]: Start isEmpty. Operand 42079 states and 222233 transitions. [2020-10-15 23:21:45,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:21:45,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:21:45,486 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:21:45,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:21:45,687 INFO L429 AbstractCegarLoop]: === Iteration 89 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:21:45,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:21:45,687 INFO L82 PathProgramCache]: Analyzing trace with hash -656591999, now seen corresponding path program 1 times [2020-10-15 23:21:45,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:21:45,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092759672] [2020-10-15 23:21:45,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:21:45,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:21:45,773 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:21:45,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092759672] [2020-10-15 23:21:45,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366544540] [2020-10-15 23:21:45,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:21:45,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:21:45,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:21:45,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:21:46,005 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:21:46,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:21:46,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:21:46,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529196119] [2020-10-15 23:21:46,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:21:46,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:21:46,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:21:46,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:21:46,007 INFO L87 Difference]: Start difference. First operand 42079 states and 222233 transitions. Second operand 16 states. [2020-10-15 23:21:48,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:21:48,598 INFO L93 Difference]: Finished difference Result 139249 states and 646209 transitions. [2020-10-15 23:21:48,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:21:48,600 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:21:48,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:21:49,020 INFO L225 Difference]: With dead ends: 139249 [2020-10-15 23:21:49,020 INFO L226 Difference]: Without dead ends: 139205 [2020-10-15 23:21:49,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:21:50,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139205 states. [2020-10-15 23:21:51,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139205 to 42066. [2020-10-15 23:21:51,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42066 states. [2020-10-15 23:21:52,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42066 states to 42066 states and 221912 transitions. [2020-10-15 23:21:52,022 INFO L78 Accepts]: Start accepts. Automaton has 42066 states and 221912 transitions. Word has length 29 [2020-10-15 23:21:52,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:21:52,022 INFO L481 AbstractCegarLoop]: Abstraction has 42066 states and 221912 transitions. [2020-10-15 23:21:52,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:21:52,022 INFO L276 IsEmpty]: Start isEmpty. Operand 42066 states and 221912 transitions. [2020-10-15 23:21:52,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:21:52,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:21:52,031 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:21:52,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:21:52,232 INFO L429 AbstractCegarLoop]: === Iteration 90 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:21:52,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:21:52,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1111601269, now seen corresponding path program 4 times [2020-10-15 23:21:52,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:21:52,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292020984] [2020-10-15 23:21:52,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:21:52,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:21:52,319 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:21:52,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292020984] [2020-10-15 23:21:52,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825098210] [2020-10-15 23:21:52,319 INFO L93 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 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:21:52,409 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 23:21:52,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:21:52,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:21:52,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:21:52,560 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:21:52,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:21:52,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:21:52,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3635097] [2020-10-15 23:21:52,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:21:52,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:21:52,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:21:52,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:21:52,562 INFO L87 Difference]: Start difference. First operand 42066 states and 221912 transitions. Second operand 16 states. [2020-10-15 23:21:54,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:21:54,679 INFO L93 Difference]: Finished difference Result 136710 states and 632229 transitions. [2020-10-15 23:21:54,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:21:54,680 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:21:54,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:21:55,095 INFO L225 Difference]: With dead ends: 136710 [2020-10-15 23:21:55,095 INFO L226 Difference]: Without dead ends: 136660 [2020-10-15 23:21:55,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:21:56,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136660 states. [2020-10-15 23:21:58,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136660 to 42207. [2020-10-15 23:21:58,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42207 states. [2020-10-15 23:21:58,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42207 states to 42207 states and 222579 transitions. [2020-10-15 23:21:58,878 INFO L78 Accepts]: Start accepts. Automaton has 42207 states and 222579 transitions. Word has length 29 [2020-10-15 23:21:58,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:21:58,878 INFO L481 AbstractCegarLoop]: Abstraction has 42207 states and 222579 transitions. [2020-10-15 23:21:58,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:21:58,878 INFO L276 IsEmpty]: Start isEmpty. Operand 42207 states and 222579 transitions. [2020-10-15 23:21:58,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:21:58,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:21:58,887 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:21:59,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:21:59,088 INFO L429 AbstractCegarLoop]: === Iteration 91 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:21:59,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:21:59,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1111629076, now seen corresponding path program 4 times [2020-10-15 23:21:59,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:21:59,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326673704] [2020-10-15 23:21:59,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:21:59,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:21:59,174 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:21:59,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326673704] [2020-10-15 23:21:59,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901859599] [2020-10-15 23:21:59,175 INFO L93 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 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:21:59,270 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 23:21:59,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:21:59,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:21:59,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:21:59,413 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:21:59,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:21:59,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:21:59,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580553723] [2020-10-15 23:21:59,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:21:59,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:21:59,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:21:59,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:21:59,415 INFO L87 Difference]: Start difference. First operand 42207 states and 222579 transitions. Second operand 16 states. [2020-10-15 23:22:01,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:22:01,426 INFO L93 Difference]: Finished difference Result 135625 states and 627192 transitions. [2020-10-15 23:22:01,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:22:01,428 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:22:01,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:22:01,838 INFO L225 Difference]: With dead ends: 135625 [2020-10-15 23:22:01,839 INFO L226 Difference]: Without dead ends: 135575 [2020-10-15 23:22:01,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:22:03,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135575 states. [2020-10-15 23:22:04,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135575 to 42083. [2020-10-15 23:22:04,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42083 states. [2020-10-15 23:22:04,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42083 states to 42083 states and 221863 transitions. [2020-10-15 23:22:04,860 INFO L78 Accepts]: Start accepts. Automaton has 42083 states and 221863 transitions. Word has length 29 [2020-10-15 23:22:04,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:22:04,860 INFO L481 AbstractCegarLoop]: Abstraction has 42083 states and 221863 transitions. [2020-10-15 23:22:04,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:22:04,860 INFO L276 IsEmpty]: Start isEmpty. Operand 42083 states and 221863 transitions. [2020-10-15 23:22:04,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:22:04,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:22:04,868 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:22:05,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable165 [2020-10-15 23:22:05,076 INFO L429 AbstractCegarLoop]: === Iteration 92 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:22:05,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:22:05,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1111608709, now seen corresponding path program 2 times [2020-10-15 23:22:05,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:22:05,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797943685] [2020-10-15 23:22:05,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:22:05,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:22:05,159 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:22:05,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797943685] [2020-10-15 23:22:05,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756753674] [2020-10-15 23:22:05,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:22:05,245 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 23:22:05,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:22:05,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:22:05,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:22:05,390 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:22:05,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:22:05,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:22:05,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56964134] [2020-10-15 23:22:05,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:22:05,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:22:05,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:22:05,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:22:05,392 INFO L87 Difference]: Start difference. First operand 42083 states and 221863 transitions. Second operand 16 states. [2020-10-15 23:22:07,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:22:07,778 INFO L93 Difference]: Finished difference Result 135171 states and 626620 transitions. [2020-10-15 23:22:07,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:22:07,779 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:22:07,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:22:08,190 INFO L225 Difference]: With dead ends: 135171 [2020-10-15 23:22:08,190 INFO L226 Difference]: Without dead ends: 135112 [2020-10-15 23:22:08,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:22:10,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135112 states. [2020-10-15 23:22:11,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135112 to 41353. [2020-10-15 23:22:11,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41353 states. [2020-10-15 23:22:11,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41353 states to 41353 states and 218067 transitions. [2020-10-15 23:22:11,770 INFO L78 Accepts]: Start accepts. Automaton has 41353 states and 218067 transitions. Word has length 29 [2020-10-15 23:22:11,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:22:11,770 INFO L481 AbstractCegarLoop]: Abstraction has 41353 states and 218067 transitions. [2020-10-15 23:22:11,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:22:11,771 INFO L276 IsEmpty]: Start isEmpty. Operand 41353 states and 218067 transitions. [2020-10-15 23:22:11,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:22:11,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:22:11,784 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:22:11,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2020-10-15 23:22:11,997 INFO L429 AbstractCegarLoop]: === Iteration 93 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:22:11,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:22:11,998 INFO L82 PathProgramCache]: Analyzing trace with hash 888585425, now seen corresponding path program 3 times [2020-10-15 23:22:11,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:22:11,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950370532] [2020-10-15 23:22:11,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:22:12,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:22:12,083 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:22:12,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950370532] [2020-10-15 23:22:12,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457214479] [2020-10-15 23:22:12,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:22:12,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 23:22:12,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:22:12,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:22:12,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:22:12,313 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:22:12,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:22:12,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:22:12,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295149348] [2020-10-15 23:22:12,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:22:12,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:22:12,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:22:12,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:22:12,316 INFO L87 Difference]: Start difference. First operand 41353 states and 218067 transitions. Second operand 16 states. [2020-10-15 23:22:14,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:22:14,563 INFO L93 Difference]: Finished difference Result 135561 states and 628000 transitions. [2020-10-15 23:22:14,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:22:14,564 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:22:14,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:22:14,971 INFO L225 Difference]: With dead ends: 135561 [2020-10-15 23:22:14,972 INFO L226 Difference]: Without dead ends: 135517 [2020-10-15 23:22:14,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:22:16,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135517 states. [2020-10-15 23:22:17,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135517 to 41345. [2020-10-15 23:22:17,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41345 states. [2020-10-15 23:22:17,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41345 states to 41345 states and 218006 transitions. [2020-10-15 23:22:17,979 INFO L78 Accepts]: Start accepts. Automaton has 41345 states and 218006 transitions. Word has length 29 [2020-10-15 23:22:17,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:22:17,979 INFO L481 AbstractCegarLoop]: Abstraction has 41345 states and 218006 transitions. [2020-10-15 23:22:17,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:22:17,979 INFO L276 IsEmpty]: Start isEmpty. Operand 41345 states and 218006 transitions. [2020-10-15 23:22:17,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:22:17,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:22:17,988 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:22:18,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2020-10-15 23:22:18,189 INFO L429 AbstractCegarLoop]: === Iteration 94 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:22:18,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:22:18,189 INFO L82 PathProgramCache]: Analyzing trace with hash 877622337, now seen corresponding path program 3 times [2020-10-15 23:22:18,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:22:18,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7176767] [2020-10-15 23:22:18,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:22:18,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:22:18,275 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:22:18,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7176767] [2020-10-15 23:22:18,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26579331] [2020-10-15 23:22:18,276 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:22:18,359 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 23:22:18,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:22:18,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:22:18,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:22:18,503 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:22:18,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:22:18,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:22:18,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528008153] [2020-10-15 23:22:18,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:22:18,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:22:18,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:22:18,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:22:18,505 INFO L87 Difference]: Start difference. First operand 41345 states and 218006 transitions. Second operand 16 states. [2020-10-15 23:22:21,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:22:21,136 INFO L93 Difference]: Finished difference Result 134714 states and 623609 transitions. [2020-10-15 23:22:21,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:22:21,138 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:22:21,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:22:21,545 INFO L225 Difference]: With dead ends: 134714 [2020-10-15 23:22:21,545 INFO L226 Difference]: Without dead ends: 134670 [2020-10-15 23:22:21,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:22:22,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134670 states. [2020-10-15 23:22:24,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134670 to 41247. [2020-10-15 23:22:24,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41247 states. [2020-10-15 23:22:24,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41247 states to 41247 states and 217534 transitions. [2020-10-15 23:22:24,503 INFO L78 Accepts]: Start accepts. Automaton has 41247 states and 217534 transitions. Word has length 29 [2020-10-15 23:22:24,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:22:24,503 INFO L481 AbstractCegarLoop]: Abstraction has 41247 states and 217534 transitions. [2020-10-15 23:22:24,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:22:24,503 INFO L276 IsEmpty]: Start isEmpty. Operand 41247 states and 217534 transitions. [2020-10-15 23:22:24,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:22:24,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:22:24,512 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:22:24,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2020-10-15 23:22:24,713 INFO L429 AbstractCegarLoop]: === Iteration 95 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:22:24,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:22:24,714 INFO L82 PathProgramCache]: Analyzing trace with hash 861862898, now seen corresponding path program 3 times [2020-10-15 23:22:24,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:22:24,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615939192] [2020-10-15 23:22:24,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:22:24,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:22:24,800 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:22:24,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615939192] [2020-10-15 23:22:24,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229930194] [2020-10-15 23:22:24,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:22:24,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 23:22:24,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:22:24,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:22:24,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:22:25,082 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:22:25,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:22:25,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:22:25,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609976893] [2020-10-15 23:22:25,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:22:25,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:22:25,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:22:25,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:22:25,084 INFO L87 Difference]: Start difference. First operand 41247 states and 217534 transitions. Second operand 16 states. [2020-10-15 23:22:27,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:22:27,316 INFO L93 Difference]: Finished difference Result 134144 states and 620566 transitions. [2020-10-15 23:22:27,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:22:27,317 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:22:27,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:22:27,716 INFO L225 Difference]: With dead ends: 134144 [2020-10-15 23:22:27,716 INFO L226 Difference]: Without dead ends: 134100 [2020-10-15 23:22:27,716 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:22:28,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134100 states. [2020-10-15 23:22:31,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134100 to 41026. [2020-10-15 23:22:31,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41026 states. [2020-10-15 23:22:31,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41026 states to 41026 states and 216444 transitions. [2020-10-15 23:22:31,351 INFO L78 Accepts]: Start accepts. Automaton has 41026 states and 216444 transitions. Word has length 29 [2020-10-15 23:22:31,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:22:31,351 INFO L481 AbstractCegarLoop]: Abstraction has 41026 states and 216444 transitions. [2020-10-15 23:22:31,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:22:31,351 INFO L276 IsEmpty]: Start isEmpty. Operand 41026 states and 216444 transitions. [2020-10-15 23:22:31,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:22:31,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:22:31,361 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:22:31,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2020-10-15 23:22:31,561 INFO L429 AbstractCegarLoop]: === Iteration 96 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:22:31,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:22:31,562 INFO L82 PathProgramCache]: Analyzing trace with hash 868378385, now seen corresponding path program 4 times [2020-10-15 23:22:31,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:22:31,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168820250] [2020-10-15 23:22:31,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:22:31,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:22:31,646 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:22:31,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168820250] [2020-10-15 23:22:31,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625305272] [2020-10-15 23:22:31,647 INFO L93 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 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:22:31,733 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 23:22:31,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:22:31,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:22:31,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:22:31,872 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:22:31,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:22:31,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:22:31,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294677485] [2020-10-15 23:22:31,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:22:31,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:22:31,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:22:31,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:22:31,874 INFO L87 Difference]: Start difference. First operand 41026 states and 216444 transitions. Second operand 16 states. [2020-10-15 23:22:33,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:22:33,953 INFO L93 Difference]: Finished difference Result 136110 states and 630361 transitions. [2020-10-15 23:22:33,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:22:33,954 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:22:33,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:22:34,364 INFO L225 Difference]: With dead ends: 136110 [2020-10-15 23:22:34,364 INFO L226 Difference]: Without dead ends: 136051 [2020-10-15 23:22:34,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:22:35,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136051 states. [2020-10-15 23:22:37,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136051 to 41075. [2020-10-15 23:22:37,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41075 states. [2020-10-15 23:22:37,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41075 states to 41075 states and 216669 transitions. [2020-10-15 23:22:37,355 INFO L78 Accepts]: Start accepts. Automaton has 41075 states and 216669 transitions. Word has length 29 [2020-10-15 23:22:37,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:22:37,355 INFO L481 AbstractCegarLoop]: Abstraction has 41075 states and 216669 transitions. [2020-10-15 23:22:37,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:22:37,355 INFO L276 IsEmpty]: Start isEmpty. Operand 41075 states and 216669 transitions. [2020-10-15 23:22:37,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:22:37,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:22:37,365 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:22:37,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable170 [2020-10-15 23:22:37,565 INFO L429 AbstractCegarLoop]: === Iteration 97 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:22:37,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:22:37,566 INFO L82 PathProgramCache]: Analyzing trace with hash 868366977, now seen corresponding path program 4 times [2020-10-15 23:22:37,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:22:37,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128651631] [2020-10-15 23:22:37,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:22:37,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:22:37,651 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:22:37,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128651631] [2020-10-15 23:22:37,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692529908] [2020-10-15 23:22:37,651 INFO L93 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 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:22:37,737 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 23:22:37,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:22:37,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:22:37,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:22:37,875 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:22:37,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:22:37,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:22:37,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622548157] [2020-10-15 23:22:37,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:22:37,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:22:37,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:22:37,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:22:37,877 INFO L87 Difference]: Start difference. First operand 41075 states and 216669 transitions. Second operand 16 states. [2020-10-15 23:22:40,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:22:40,202 INFO L93 Difference]: Finished difference Result 134992 states and 625253 transitions. [2020-10-15 23:22:40,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:22:40,203 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:22:40,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:22:40,613 INFO L225 Difference]: With dead ends: 134992 [2020-10-15 23:22:40,613 INFO L226 Difference]: Without dead ends: 134933 [2020-10-15 23:22:40,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:22:42,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134933 states. [2020-10-15 23:22:44,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134933 to 40832. [2020-10-15 23:22:44,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40832 states. [2020-10-15 23:22:44,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40832 states to 40832 states and 215375 transitions. [2020-10-15 23:22:44,165 INFO L78 Accepts]: Start accepts. Automaton has 40832 states and 215375 transitions. Word has length 29 [2020-10-15 23:22:44,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:22:44,165 INFO L481 AbstractCegarLoop]: Abstraction has 40832 states and 215375 transitions. [2020-10-15 23:22:44,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:22:44,165 INFO L276 IsEmpty]: Start isEmpty. Operand 40832 states and 215375 transitions. [2020-10-15 23:22:44,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:22:44,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:22:44,174 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:22:44,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171,98 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:22:44,382 INFO L429 AbstractCegarLoop]: === Iteration 98 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:22:44,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:22:44,382 INFO L82 PathProgramCache]: Analyzing trace with hash 868350578, now seen corresponding path program 4 times [2020-10-15 23:22:44,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:22:44,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111515681] [2020-10-15 23:22:44,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:22:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:22:44,475 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:22:44,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111515681] [2020-10-15 23:22:44,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381692492] [2020-10-15 23:22:44,475 INFO L93 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 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:22:44,560 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 23:22:44,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:22:44,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:22:44,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:22:44,708 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:22:44,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:22:44,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:22:44,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587542945] [2020-10-15 23:22:44,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:22:44,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:22:44,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:22:44,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:22:44,710 INFO L87 Difference]: Start difference. First operand 40832 states and 215375 transitions. Second operand 16 states. [2020-10-15 23:22:47,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:22:47,024 INFO L93 Difference]: Finished difference Result 133675 states and 619010 transitions. [2020-10-15 23:22:47,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:22:47,025 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:22:47,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:22:47,426 INFO L225 Difference]: With dead ends: 133675 [2020-10-15 23:22:47,426 INFO L226 Difference]: Without dead ends: 133616 [2020-10-15 23:22:47,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:22:48,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133616 states. [2020-10-15 23:22:50,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133616 to 40130. [2020-10-15 23:22:50,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40130 states. [2020-10-15 23:22:50,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40130 states to 40130 states and 211659 transitions. [2020-10-15 23:22:50,367 INFO L78 Accepts]: Start accepts. Automaton has 40130 states and 211659 transitions. Word has length 29 [2020-10-15 23:22:50,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:22:50,367 INFO L481 AbstractCegarLoop]: Abstraction has 40130 states and 211659 transitions. [2020-10-15 23:22:50,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:22:50,367 INFO L276 IsEmpty]: Start isEmpty. Operand 40130 states and 211659 transitions. [2020-10-15 23:22:50,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:22:50,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:22:50,376 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:22:50,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:22:50,576 INFO L429 AbstractCegarLoop]: === Iteration 99 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:22:50,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:22:50,577 INFO L82 PathProgramCache]: Analyzing trace with hash 350641582, now seen corresponding path program 1 times [2020-10-15 23:22:50,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:22:50,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472802823] [2020-10-15 23:22:50,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:22:50,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:22:50,616 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-10-15 23:22:50,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472802823] [2020-10-15 23:22:50,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:22:50,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 23:22:50,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090099134] [2020-10-15 23:22:50,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 23:22:50,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:22:50,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 23:22:50,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 23:22:50,617 INFO L87 Difference]: Start difference. First operand 40130 states and 211659 transitions. Second operand 5 states. [2020-10-15 23:22:51,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:22:51,627 INFO L93 Difference]: Finished difference Result 67092 states and 345298 transitions. [2020-10-15 23:22:51,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 23:22:51,628 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-10-15 23:22:51,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:22:51,839 INFO L225 Difference]: With dead ends: 67092 [2020-10-15 23:22:51,839 INFO L226 Difference]: Without dead ends: 67028 [2020-10-15 23:22:51,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:22:52,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67028 states. [2020-10-15 23:22:53,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67028 to 49403. [2020-10-15 23:22:53,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49403 states. [2020-10-15 23:22:53,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49403 states to 49403 states and 260758 transitions. [2020-10-15 23:22:53,796 INFO L78 Accepts]: Start accepts. Automaton has 49403 states and 260758 transitions. Word has length 29 [2020-10-15 23:22:53,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:22:53,796 INFO L481 AbstractCegarLoop]: Abstraction has 49403 states and 260758 transitions. [2020-10-15 23:22:53,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 23:22:53,797 INFO L276 IsEmpty]: Start isEmpty. Operand 49403 states and 260758 transitions. [2020-10-15 23:22:53,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:22:53,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:22:53,805 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:22:53,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2020-10-15 23:22:53,805 INFO L429 AbstractCegarLoop]: === Iteration 100 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:22:53,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:22:53,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1691122699, now seen corresponding path program 5 times [2020-10-15 23:22:53,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:22:53,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872296132] [2020-10-15 23:22:53,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:22:53,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:22:53,890 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 23:22:53,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872296132] [2020-10-15 23:22:53,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:22:53,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:22:53,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94544823] [2020-10-15 23:22:53,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:22:53,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:22:53,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:22:53,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:22:53,891 INFO L87 Difference]: Start difference. First operand 49403 states and 260758 transitions. Second operand 9 states. [2020-10-15 23:22:55,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:22:55,975 INFO L93 Difference]: Finished difference Result 158544 states and 742820 transitions. [2020-10-15 23:22:55,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:22:55,976 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-15 23:22:55,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:22:56,467 INFO L225 Difference]: With dead ends: 158544 [2020-10-15 23:22:56,467 INFO L226 Difference]: Without dead ends: 158488 [2020-10-15 23:22:56,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 23:22:57,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158488 states. [2020-10-15 23:22:59,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158488 to 49281. [2020-10-15 23:22:59,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49281 states. [2020-10-15 23:22:59,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49281 states to 49281 states and 259845 transitions. [2020-10-15 23:22:59,998 INFO L78 Accepts]: Start accepts. Automaton has 49281 states and 259845 transitions. Word has length 29 [2020-10-15 23:22:59,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:22:59,998 INFO L481 AbstractCegarLoop]: Abstraction has 49281 states and 259845 transitions. [2020-10-15 23:22:59,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:22:59,998 INFO L276 IsEmpty]: Start isEmpty. Operand 49281 states and 259845 transitions. [2020-10-15 23:23:00,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:23:00,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:23:00,007 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:23:00,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2020-10-15 23:23:00,007 INFO L429 AbstractCegarLoop]: === Iteration 101 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:23:00,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:23:00,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1691106300, now seen corresponding path program 5 times [2020-10-15 23:23:00,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:23:00,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615680309] [2020-10-15 23:23:00,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:23:00,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:23:00,089 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 23:23:00,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615680309] [2020-10-15 23:23:00,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:23:00,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:23:00,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259677071] [2020-10-15 23:23:00,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:23:00,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:23:00,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:23:00,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:23:00,090 INFO L87 Difference]: Start difference. First operand 49281 states and 259845 transitions. Second operand 9 states. [2020-10-15 23:23:00,861 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-10-15 23:23:02,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:23:02,469 INFO L93 Difference]: Finished difference Result 156182 states and 731010 transitions. [2020-10-15 23:23:02,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:23:02,470 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-15 23:23:02,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:23:02,938 INFO L225 Difference]: With dead ends: 156182 [2020-10-15 23:23:02,938 INFO L226 Difference]: Without dead ends: 156126 [2020-10-15 23:23:02,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 23:23:04,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156126 states. [2020-10-15 23:23:06,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156126 to 48971. [2020-10-15 23:23:06,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48971 states. [2020-10-15 23:23:06,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48971 states to 48971 states and 257988 transitions. [2020-10-15 23:23:06,439 INFO L78 Accepts]: Start accepts. Automaton has 48971 states and 257988 transitions. Word has length 29 [2020-10-15 23:23:06,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:23:06,440 INFO L481 AbstractCegarLoop]: Abstraction has 48971 states and 257988 transitions. [2020-10-15 23:23:06,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:23:06,440 INFO L276 IsEmpty]: Start isEmpty. Operand 48971 states and 257988 transitions. [2020-10-15 23:23:06,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:23:06,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:23:06,448 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:23:06,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2020-10-15 23:23:06,449 INFO L429 AbstractCegarLoop]: === Iteration 102 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:23:06,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:23:06,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1691126667, now seen corresponding path program 5 times [2020-10-15 23:23:06,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:23:06,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976732478] [2020-10-15 23:23:06,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:23:06,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:23:06,533 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 23:23:06,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976732478] [2020-10-15 23:23:06,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:23:06,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:23:06,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319053196] [2020-10-15 23:23:06,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:23:06,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:23:06,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:23:06,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:23:06,535 INFO L87 Difference]: Start difference. First operand 48971 states and 257988 transitions. Second operand 9 states. [2020-10-15 23:23:08,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:23:08,564 INFO L93 Difference]: Finished difference Result 153730 states and 719178 transitions. [2020-10-15 23:23:08,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:23:08,566 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-15 23:23:08,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:23:09,039 INFO L225 Difference]: With dead ends: 153730 [2020-10-15 23:23:09,039 INFO L226 Difference]: Without dead ends: 153674 [2020-10-15 23:23:09,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 23:23:10,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153674 states. [2020-10-15 23:23:13,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153674 to 48427. [2020-10-15 23:23:13,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48427 states. [2020-10-15 23:23:13,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48427 states to 48427 states and 254935 transitions. [2020-10-15 23:23:13,237 INFO L78 Accepts]: Start accepts. Automaton has 48427 states and 254935 transitions. Word has length 29 [2020-10-15 23:23:13,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:23:13,237 INFO L481 AbstractCegarLoop]: Abstraction has 48427 states and 254935 transitions. [2020-10-15 23:23:13,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:23:13,238 INFO L276 IsEmpty]: Start isEmpty. Operand 48427 states and 254935 transitions. [2020-10-15 23:23:13,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:23:13,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:23:13,246 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:23:13,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2020-10-15 23:23:13,247 INFO L429 AbstractCegarLoop]: === Iteration 103 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:23:13,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:23:13,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1680171019, now seen corresponding path program 6 times [2020-10-15 23:23:13,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:23:13,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938875062] [2020-10-15 23:23:13,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:23:13,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:23:13,338 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 23:23:13,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938875062] [2020-10-15 23:23:13,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:23:13,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:23:13,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445313167] [2020-10-15 23:23:13,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:23:13,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:23:13,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:23:13,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:23:13,340 INFO L87 Difference]: Start difference. First operand 48427 states and 254935 transitions. Second operand 9 states. [2020-10-15 23:23:15,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:23:15,372 INFO L93 Difference]: Finished difference Result 153132 states and 715258 transitions. [2020-10-15 23:23:15,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:23:15,373 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-15 23:23:15,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:23:15,839 INFO L225 Difference]: With dead ends: 153132 [2020-10-15 23:23:15,839 INFO L226 Difference]: Without dead ends: 153061 [2020-10-15 23:23:15,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 23:23:17,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153061 states. [2020-10-15 23:23:19,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153061 to 47511. [2020-10-15 23:23:19,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47511 states. [2020-10-15 23:23:19,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47511 states to 47511 states and 249853 transitions. [2020-10-15 23:23:19,284 INFO L78 Accepts]: Start accepts. Automaton has 47511 states and 249853 transitions. Word has length 29 [2020-10-15 23:23:19,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:23:19,284 INFO L481 AbstractCegarLoop]: Abstraction has 47511 states and 249853 transitions. [2020-10-15 23:23:19,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:23:19,284 INFO L276 IsEmpty]: Start isEmpty. Operand 47511 states and 249853 transitions. [2020-10-15 23:23:19,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:23:19,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:23:19,292 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:23:19,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2020-10-15 23:23:19,293 INFO L429 AbstractCegarLoop]: === Iteration 104 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:23:19,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:23:19,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1680143212, now seen corresponding path program 5 times [2020-10-15 23:23:19,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:23:19,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163076059] [2020-10-15 23:23:19,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:23:19,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:23:19,375 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 23:23:19,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163076059] [2020-10-15 23:23:19,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:23:19,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:23:19,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675581762] [2020-10-15 23:23:19,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:23:19,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:23:19,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:23:19,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:23:19,377 INFO L87 Difference]: Start difference. First operand 47511 states and 249853 transitions. Second operand 9 states. [2020-10-15 23:23:21,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:23:21,977 INFO L93 Difference]: Finished difference Result 152943 states and 713344 transitions. [2020-10-15 23:23:21,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:23:21,978 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-15 23:23:21,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:23:22,445 INFO L225 Difference]: With dead ends: 152943 [2020-10-15 23:23:22,445 INFO L226 Difference]: Without dead ends: 152887 [2020-10-15 23:23:22,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 23:23:23,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152887 states. [2020-10-15 23:23:25,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152887 to 47324. [2020-10-15 23:23:25,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47324 states. [2020-10-15 23:23:25,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47324 states to 47324 states and 248753 transitions. [2020-10-15 23:23:25,872 INFO L78 Accepts]: Start accepts. Automaton has 47324 states and 248753 transitions. Word has length 29 [2020-10-15 23:23:25,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:23:25,872 INFO L481 AbstractCegarLoop]: Abstraction has 47324 states and 248753 transitions. [2020-10-15 23:23:25,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:23:25,872 INFO L276 IsEmpty]: Start isEmpty. Operand 47324 states and 248753 transitions. [2020-10-15 23:23:25,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:23:25,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:23:25,880 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:23:25,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2020-10-15 23:23:25,881 INFO L429 AbstractCegarLoop]: === Iteration 105 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:23:25,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:23:25,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1680163579, now seen corresponding path program 5 times [2020-10-15 23:23:25,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:23:25,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812928405] [2020-10-15 23:23:25,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:23:25,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:23:25,971 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 23:23:25,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812928405] [2020-10-15 23:23:25,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:23:25,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:23:25,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671758049] [2020-10-15 23:23:25,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:23:25,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:23:25,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:23:25,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:23:25,972 INFO L87 Difference]: Start difference. First operand 47324 states and 248753 transitions. Second operand 9 states. [2020-10-15 23:23:28,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:23:28,098 INFO L93 Difference]: Finished difference Result 150780 states and 703178 transitions. [2020-10-15 23:23:28,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:23:28,099 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-15 23:23:28,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:23:28,564 INFO L225 Difference]: With dead ends: 150780 [2020-10-15 23:23:28,564 INFO L226 Difference]: Without dead ends: 150724 [2020-10-15 23:23:28,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 23:23:30,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150724 states. [2020-10-15 23:23:32,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150724 to 46868. [2020-10-15 23:23:32,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46868 states. [2020-10-15 23:23:32,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46868 states to 46868 states and 246275 transitions. [2020-10-15 23:23:32,808 INFO L78 Accepts]: Start accepts. Automaton has 46868 states and 246275 transitions. Word has length 29 [2020-10-15 23:23:32,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:23:32,808 INFO L481 AbstractCegarLoop]: Abstraction has 46868 states and 246275 transitions. [2020-10-15 23:23:32,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:23:32,809 INFO L276 IsEmpty]: Start isEmpty. Operand 46868 states and 246275 transitions. [2020-10-15 23:23:32,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:23:32,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:23:32,817 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:23:32,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2020-10-15 23:23:32,817 INFO L429 AbstractCegarLoop]: === Iteration 106 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:23:32,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:23:32,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1664411580, now seen corresponding path program 6 times [2020-10-15 23:23:32,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:23:32,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876043587] [2020-10-15 23:23:32,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:23:32,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:23:32,901 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 23:23:32,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876043587] [2020-10-15 23:23:32,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:23:32,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:23:32,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405041949] [2020-10-15 23:23:32,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:23:32,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:23:32,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:23:32,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:23:32,902 INFO L87 Difference]: Start difference. First operand 46868 states and 246275 transitions. Second operand 9 states. [2020-10-15 23:23:35,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:23:35,073 INFO L93 Difference]: Finished difference Result 150331 states and 700262 transitions. [2020-10-15 23:23:35,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:23:35,074 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-15 23:23:35,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:23:35,515 INFO L225 Difference]: With dead ends: 150331 [2020-10-15 23:23:35,515 INFO L226 Difference]: Without dead ends: 150260 [2020-10-15 23:23:35,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 23:23:37,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150260 states. [2020-10-15 23:23:38,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150260 to 46219. [2020-10-15 23:23:38,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46219 states. [2020-10-15 23:23:38,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46219 states to 46219 states and 242740 transitions. [2020-10-15 23:23:38,916 INFO L78 Accepts]: Start accepts. Automaton has 46219 states and 242740 transitions. Word has length 29 [2020-10-15 23:23:38,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:23:38,916 INFO L481 AbstractCegarLoop]: Abstraction has 46219 states and 242740 transitions. [2020-10-15 23:23:38,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:23:38,916 INFO L276 IsEmpty]: Start isEmpty. Operand 46219 states and 242740 transitions. [2020-10-15 23:23:38,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:23:38,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:23:38,924 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:23:38,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2020-10-15 23:23:38,925 INFO L429 AbstractCegarLoop]: === Iteration 107 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:23:38,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:23:38,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1664400172, now seen corresponding path program 6 times [2020-10-15 23:23:38,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:23:38,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195599384] [2020-10-15 23:23:38,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:23:38,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:23:39,011 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 23:23:39,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195599384] [2020-10-15 23:23:39,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:23:39,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:23:39,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871266993] [2020-10-15 23:23:39,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:23:39,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:23:39,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:23:39,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:23:39,013 INFO L87 Difference]: Start difference. First operand 46219 states and 242740 transitions. Second operand 9 states. [2020-10-15 23:23:41,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:23:41,776 INFO L93 Difference]: Finished difference Result 148950 states and 693501 transitions. [2020-10-15 23:23:41,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:23:41,777 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-15 23:23:41,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:23:42,221 INFO L225 Difference]: With dead ends: 148950 [2020-10-15 23:23:42,221 INFO L226 Difference]: Without dead ends: 148879 [2020-10-15 23:23:42,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 23:23:43,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148879 states. [2020-10-15 23:23:45,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148879 to 45332. [2020-10-15 23:23:45,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45332 states. [2020-10-15 23:23:45,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45332 states to 45332 states and 238000 transitions. [2020-10-15 23:23:45,515 INFO L78 Accepts]: Start accepts. Automaton has 45332 states and 238000 transitions. Word has length 29 [2020-10-15 23:23:45,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:23:45,515 INFO L481 AbstractCegarLoop]: Abstraction has 45332 states and 238000 transitions. [2020-10-15 23:23:45,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:23:45,516 INFO L276 IsEmpty]: Start isEmpty. Operand 45332 states and 238000 transitions. [2020-10-15 23:23:45,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:23:45,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:23:45,524 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:23:45,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2020-10-15 23:23:45,524 INFO L429 AbstractCegarLoop]: === Iteration 108 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:23:45,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:23:45,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1664404140, now seen corresponding path program 5 times [2020-10-15 23:23:45,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:23:45,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118773806] [2020-10-15 23:23:45,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:23:45,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:23:45,608 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 23:23:45,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118773806] [2020-10-15 23:23:45,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:23:45,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:23:45,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509949347] [2020-10-15 23:23:45,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:23:45,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:23:45,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:23:45,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:23:45,609 INFO L87 Difference]: Start difference. First operand 45332 states and 238000 transitions. Second operand 9 states. [2020-10-15 23:23:47,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:23:47,688 INFO L93 Difference]: Finished difference Result 148687 states and 692117 transitions. [2020-10-15 23:23:47,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:23:47,689 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-15 23:23:47,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:23:48,135 INFO L225 Difference]: With dead ends: 148687 [2020-10-15 23:23:48,136 INFO L226 Difference]: Without dead ends: 148631 [2020-10-15 23:23:48,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 23:23:49,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148631 states. [2020-10-15 23:23:52,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148631 to 45016. [2020-10-15 23:23:52,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45016 states. [2020-10-15 23:23:52,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45016 states to 45016 states and 236327 transitions. [2020-10-15 23:23:52,334 INFO L78 Accepts]: Start accepts. Automaton has 45016 states and 236327 transitions. Word has length 29 [2020-10-15 23:23:52,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:23:52,334 INFO L481 AbstractCegarLoop]: Abstraction has 45016 states and 236327 transitions. [2020-10-15 23:23:52,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:23:52,334 INFO L276 IsEmpty]: Start isEmpty. Operand 45016 states and 236327 transitions. [2020-10-15 23:23:52,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:23:52,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:23:52,343 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:23:52,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2020-10-15 23:23:52,343 INFO L429 AbstractCegarLoop]: === Iteration 109 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:23:52,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:23:52,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1683984267, now seen corresponding path program 6 times [2020-10-15 23:23:52,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:23:52,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361209805] [2020-10-15 23:23:52,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:23:52,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:23:52,427 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 23:23:52,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361209805] [2020-10-15 23:23:52,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:23:52,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:23:52,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065564397] [2020-10-15 23:23:52,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:23:52,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:23:52,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:23:52,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:23:52,429 INFO L87 Difference]: Start difference. First operand 45016 states and 236327 transitions. Second operand 9 states. [2020-10-15 23:23:54,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:23:54,535 INFO L93 Difference]: Finished difference Result 147978 states and 688634 transitions. [2020-10-15 23:23:54,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:23:54,536 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-15 23:23:54,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:23:54,988 INFO L225 Difference]: With dead ends: 147978 [2020-10-15 23:23:54,988 INFO L226 Difference]: Without dead ends: 147907 [2020-10-15 23:23:54,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 23:23:56,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147907 states. [2020-10-15 23:23:58,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147907 to 44547. [2020-10-15 23:23:58,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44547 states. [2020-10-15 23:23:58,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44547 states to 44547 states and 233827 transitions. [2020-10-15 23:23:58,322 INFO L78 Accepts]: Start accepts. Automaton has 44547 states and 233827 transitions. Word has length 29 [2020-10-15 23:23:58,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:23:58,322 INFO L481 AbstractCegarLoop]: Abstraction has 44547 states and 233827 transitions. [2020-10-15 23:23:58,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:23:58,323 INFO L276 IsEmpty]: Start isEmpty. Operand 44547 states and 233827 transitions. [2020-10-15 23:23:58,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:23:58,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:23:58,331 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:23:58,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2020-10-15 23:23:58,331 INFO L429 AbstractCegarLoop]: === Iteration 110 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:23:58,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:23:58,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1683972859, now seen corresponding path program 6 times [2020-10-15 23:23:58,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:23:58,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980422274] [2020-10-15 23:23:58,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:23:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:23:58,419 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 23:23:58,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980422274] [2020-10-15 23:23:58,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:23:58,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:23:58,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850038501] [2020-10-15 23:23:58,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:23:58,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:23:58,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:23:58,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:23:58,421 INFO L87 Difference]: Start difference. First operand 44547 states and 233827 transitions. Second operand 9 states. [2020-10-15 23:24:00,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:24:00,574 INFO L93 Difference]: Finished difference Result 146514 states and 681741 transitions. [2020-10-15 23:24:00,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:24:00,575 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-15 23:24:00,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:24:01,025 INFO L225 Difference]: With dead ends: 146514 [2020-10-15 23:24:01,026 INFO L226 Difference]: Without dead ends: 146443 [2020-10-15 23:24:01,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 23:24:03,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146443 states. [2020-10-15 23:24:04,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146443 to 43886. [2020-10-15 23:24:04,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43886 states. [2020-10-15 23:24:04,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43886 states to 43886 states and 230374 transitions. [2020-10-15 23:24:04,936 INFO L78 Accepts]: Start accepts. Automaton has 43886 states and 230374 transitions. Word has length 29 [2020-10-15 23:24:04,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:24:04,937 INFO L481 AbstractCegarLoop]: Abstraction has 43886 states and 230374 transitions. [2020-10-15 23:24:04,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:24:04,937 INFO L276 IsEmpty]: Start isEmpty. Operand 43886 states and 230374 transitions. [2020-10-15 23:24:04,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:24:04,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:24:04,945 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:24:04,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2020-10-15 23:24:04,945 INFO L429 AbstractCegarLoop]: === Iteration 111 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:24:04,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:24:04,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1683956460, now seen corresponding path program 6 times [2020-10-15 23:24:04,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:24:04,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443841956] [2020-10-15 23:24:04,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:24:04,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:24:05,033 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 23:24:05,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443841956] [2020-10-15 23:24:05,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:24:05,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:24:05,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840621709] [2020-10-15 23:24:05,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:24:05,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:24:05,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:24:05,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:24:05,034 INFO L87 Difference]: Start difference. First operand 43886 states and 230374 transitions. Second operand 9 states. [2020-10-15 23:24:07,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:24:07,122 INFO L93 Difference]: Finished difference Result 145269 states and 675718 transitions. [2020-10-15 23:24:07,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:24:07,124 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-15 23:24:07,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:24:07,559 INFO L225 Difference]: With dead ends: 145269 [2020-10-15 23:24:07,560 INFO L226 Difference]: Without dead ends: 145198 [2020-10-15 23:24:07,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 23:24:08,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145198 states. [2020-10-15 23:24:10,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145198 to 42813. [2020-10-15 23:24:10,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42813 states. [2020-10-15 23:24:10,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42813 states to 42813 states and 224792 transitions. [2020-10-15 23:24:10,790 INFO L78 Accepts]: Start accepts. Automaton has 42813 states and 224792 transitions. Word has length 29 [2020-10-15 23:24:10,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:24:10,790 INFO L481 AbstractCegarLoop]: Abstraction has 42813 states and 224792 transitions. [2020-10-15 23:24:10,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:24:10,790 INFO L276 IsEmpty]: Start isEmpty. Operand 42813 states and 224792 transitions. [2020-10-15 23:24:10,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-15 23:24:10,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:24:10,800 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:24:10,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2020-10-15 23:24:10,801 INFO L429 AbstractCegarLoop]: === Iteration 112 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:24:10,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:24:10,801 INFO L82 PathProgramCache]: Analyzing trace with hash -2020768925, now seen corresponding path program 1 times [2020-10-15 23:24:10,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:24:10,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590963088] [2020-10-15 23:24:10,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:24:10,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 23:24:10,806 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 23:24:10,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 23:24:10,811 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 23:24:10,818 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 23:24:10,818 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 23:24:10,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2020-10-15 23:24:10,819 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-15 23:24:10,819 WARN L371 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 23:24:10,819 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2020-10-15 23:24:10,836 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,836 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,837 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,837 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,837 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,837 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,838 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,838 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,838 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,838 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,838 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,838 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,838 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,839 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,839 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,839 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,839 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,839 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,839 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,839 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,839 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,839 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,839 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,839 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,839 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,840 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,840 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,840 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,840 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,840 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,840 WARN L313 ript$VariableManager]: TermVariabe thr2Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,840 WARN L313 ript$VariableManager]: TermVariabe thr2Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,840 WARN L313 ript$VariableManager]: TermVariabe thr2Thread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,840 WARN L313 ript$VariableManager]: TermVariabe thr2Thread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,840 WARN L313 ript$VariableManager]: TermVariabe thr2Thread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,840 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,840 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,840 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,841 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,841 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,841 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,841 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,841 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,841 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,841 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,841 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,841 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,841 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,841 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,841 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,842 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,842 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,842 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,842 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,842 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,842 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,842 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,842 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,842 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,842 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,842 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,842 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,842 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,843 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,843 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,843 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,843 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,843 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,843 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,843 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,843 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,843 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,843 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,843 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,843 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,843 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,844 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,844 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,844 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,844 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,844 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,844 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,844 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,844 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,844 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,844 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,844 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,844 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,844 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,845 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,845 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,845 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,845 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,845 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,845 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,845 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,845 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,845 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,845 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,845 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,845 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,846 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,846 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,846 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,846 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,846 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,846 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,846 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,846 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,846 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,846 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,846 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,846 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,846 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,847 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,847 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,847 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,847 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,847 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,847 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,847 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,847 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,847 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,847 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,849 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,849 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,849 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,849 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,849 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,851 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,851 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,851 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,851 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,851 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,853 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,853 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,853 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,853 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,853 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,854 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,854 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,854 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,854 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,854 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,856 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,856 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,856 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,857 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,857 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,858 WARN L313 ript$VariableManager]: TermVariabe thr2Thread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,858 WARN L313 ript$VariableManager]: TermVariabe thr2Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,859 WARN L313 ript$VariableManager]: TermVariabe thr2Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,859 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,859 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,861 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,861 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,861 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,861 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,861 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,861 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,863 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,863 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,863 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,864 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,864 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,864 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,865 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,866 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,866 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,866 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,866 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,866 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,867 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,867 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,868 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,868 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,868 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,868 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,869 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,869 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,869 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,869 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,869 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,869 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,870 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,871 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,871 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,871 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,871 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,871 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,873 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,873 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,873 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,873 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,874 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,874 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:24:10,875 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-10-15 23:24:10,876 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 23:24:10,876 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 23:24:10,876 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 23:24:10,876 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 23:24:10,876 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 23:24:10,876 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 23:24:10,876 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 23:24:10,876 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 23:24:10,878 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 23:24:10,879 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 175 places, 154 transitions, 462 flow [2020-10-15 23:24:10,879 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 175 places, 154 transitions, 462 flow [2020-10-15 23:24:10,879 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 175 places, 154 transitions, 462 flow [2020-10-15 23:24:10,899 INFO L129 PetriNetUnfolder]: 10/194 cut-off events. [2020-10-15 23:24:10,900 INFO L130 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2020-10-15 23:24:10,902 INFO L80 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 194 events. 10/194 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 324 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 238. Up to 16 conditions per place. [2020-10-15 23:24:10,908 INFO L117 LiptonReduction]: Number of co-enabled transitions 3460 [2020-10-15 23:24:11,619 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2020-10-15 23:24:14,552 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-10-15 23:24:15,074 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-10-15 23:24:15,224 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-15 23:24:15,454 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2020-10-15 23:24:15,563 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-15 23:24:15,572 INFO L132 LiptonReduction]: Checked pairs total: 6416 [2020-10-15 23:24:15,572 INFO L134 LiptonReduction]: Total number of compositions: 141 [2020-10-15 23:24:15,572 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 81 places, 51 transitions, 256 flow [2020-10-15 23:24:27,066 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 55763 states. [2020-10-15 23:24:27,066 INFO L276 IsEmpty]: Start isEmpty. Operand 55763 states. [2020-10-15 23:24:27,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-15 23:24:27,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:24:27,066 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-15 23:24:27,067 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:24:27,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:24:27,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1607054, now seen corresponding path program 1 times [2020-10-15 23:24:27,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:24:27,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548126590] [2020-10-15 23:24:27,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:24:27,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:24:27,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:24:27,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548126590] [2020-10-15 23:24:27,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:24:27,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 23:24:27,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013775846] [2020-10-15 23:24:27,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 23:24:27,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:24:27,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 23:24:27,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 23:24:27,080 INFO L87 Difference]: Start difference. First operand 55763 states. Second operand 3 states. [2020-10-15 23:24:27,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:24:27,512 INFO L93 Difference]: Finished difference Result 54360 states and 318970 transitions. [2020-10-15 23:24:27,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 23:24:27,513 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-15 23:24:27,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:24:27,695 INFO L225 Difference]: With dead ends: 54360 [2020-10-15 23:24:27,696 INFO L226 Difference]: Without dead ends: 51079 [2020-10-15 23:24:27,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 23:24:33,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51079 states. [2020-10-15 23:24:34,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51079 to 51079. [2020-10-15 23:24:34,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51079 states. [2020-10-15 23:24:34,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51079 states to 51079 states and 298193 transitions. [2020-10-15 23:24:34,726 INFO L78 Accepts]: Start accepts. Automaton has 51079 states and 298193 transitions. Word has length 3 [2020-10-15 23:24:34,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:24:34,726 INFO L481 AbstractCegarLoop]: Abstraction has 51079 states and 298193 transitions. [2020-10-15 23:24:34,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 23:24:34,726 INFO L276 IsEmpty]: Start isEmpty. Operand 51079 states and 298193 transitions. [2020-10-15 23:24:34,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 23:24:34,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:24:34,726 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:24:34,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2020-10-15 23:24:34,726 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:24:34,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:24:34,727 INFO L82 PathProgramCache]: Analyzing trace with hash -993793982, now seen corresponding path program 1 times [2020-10-15 23:24:34,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:24:34,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043684628] [2020-10-15 23:24:34,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:24:34,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:24:34,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:24:34,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043684628] [2020-10-15 23:24:34,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:24:34,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 23:24:34,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355514990] [2020-10-15 23:24:34,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 23:24:34,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:24:34,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 23:24:34,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 23:24:34,761 INFO L87 Difference]: Start difference. First operand 51079 states and 298193 transitions. Second operand 5 states. [2020-10-15 23:24:35,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:24:35,515 INFO L93 Difference]: Finished difference Result 96937 states and 538177 transitions. [2020-10-15 23:24:35,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 23:24:35,516 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-15 23:24:35,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:24:35,851 INFO L225 Difference]: With dead ends: 96937 [2020-10-15 23:24:35,851 INFO L226 Difference]: Without dead ends: 96928 [2020-10-15 23:24:35,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:24:39,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96928 states. [2020-10-15 23:24:42,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96928 to 61361. [2020-10-15 23:24:42,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61361 states. [2020-10-15 23:24:42,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61361 states to 61361 states and 361700 transitions. [2020-10-15 23:24:42,536 INFO L78 Accepts]: Start accepts. Automaton has 61361 states and 361700 transitions. Word has length 9 [2020-10-15 23:24:42,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:24:42,536 INFO L481 AbstractCegarLoop]: Abstraction has 61361 states and 361700 transitions. [2020-10-15 23:24:42,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 23:24:42,537 INFO L276 IsEmpty]: Start isEmpty. Operand 61361 states and 361700 transitions. [2020-10-15 23:24:42,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 23:24:42,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:24:42,537 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:24:42,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2020-10-15 23:24:42,537 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:24:42,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:24:42,537 INFO L82 PathProgramCache]: Analyzing trace with hash -250834384, now seen corresponding path program 1 times [2020-10-15 23:24:42,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:24:42,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140063101] [2020-10-15 23:24:42,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:24:42,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:24:42,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:24:42,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140063101] [2020-10-15 23:24:42,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:24:42,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 23:24:42,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803597292] [2020-10-15 23:24:42,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 23:24:42,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:24:42,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 23:24:42,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 23:24:42,578 INFO L87 Difference]: Start difference. First operand 61361 states and 361700 transitions. Second operand 5 states. [2020-10-15 23:24:43,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:24:43,505 INFO L93 Difference]: Finished difference Result 115105 states and 647870 transitions. [2020-10-15 23:24:43,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 23:24:43,507 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-15 23:24:43,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:24:43,917 INFO L225 Difference]: With dead ends: 115105 [2020-10-15 23:24:43,917 INFO L226 Difference]: Without dead ends: 115086 [2020-10-15 23:24:43,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:24:48,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115086 states. Received shutdown request... [2020-10-15 23:24:54,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2020-10-15 23:24:54,827 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-15 23:24:54,829 WARN L235 ceAbstractionStarter]: Timeout [2020-10-15 23:24:54,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 11:24:54 BasicIcfg [2020-10-15 23:24:54,830 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 23:24:54,831 INFO L168 Benchmark]: Toolchain (without parser) took 791111.71 ms. Allocated memory was 253.2 MB in the beginning and 5.8 GB in the end (delta: 5.5 GB). Free memory was 207.9 MB in the beginning and 4.6 GB in the end (delta: -4.4 GB). Peak memory consumption was 5.2 GB. Max. memory is 14.2 GB. [2020-10-15 23:24:54,831 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 253.2 MB. Free memory is still 229.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 23:24:54,831 INFO L168 Benchmark]: CACSL2BoogieTranslator took 678.65 ms. Allocated memory was 253.2 MB in the beginning and 319.8 MB in the end (delta: 66.6 MB). Free memory was 207.9 MB in the beginning and 275.6 MB in the end (delta: -67.7 MB). Peak memory consumption was 29.7 MB. Max. memory is 14.2 GB. [2020-10-15 23:24:54,832 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.73 ms. Allocated memory is still 319.8 MB. Free memory was 275.6 MB in the beginning and 273.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 23:24:54,832 INFO L168 Benchmark]: Boogie Preprocessor took 26.01 ms. Allocated memory is still 319.8 MB. Free memory is still 273.1 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 23:24:54,832 INFO L168 Benchmark]: RCFGBuilder took 445.70 ms. Allocated memory is still 319.8 MB. Free memory was 270.6 MB in the beginning and 251.3 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. [2020-10-15 23:24:54,832 INFO L168 Benchmark]: TraceAbstraction took 789904.17 ms. Allocated memory was 319.8 MB in the beginning and 5.8 GB in the end (delta: 5.5 GB). Free memory was 251.3 MB in the beginning and 4.6 GB in the end (delta: -4.4 GB). Peak memory consumption was 5.2 GB. Max. memory is 14.2 GB. [2020-10-15 23:24:54,834 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 253.2 MB. Free memory is still 229.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 678.65 ms. Allocated memory was 253.2 MB in the beginning and 319.8 MB in the end (delta: 66.6 MB). Free memory was 207.9 MB in the beginning and 275.6 MB in the end (delta: -67.7 MB). Peak memory consumption was 29.7 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 49.73 ms. Allocated memory is still 319.8 MB. Free memory was 275.6 MB in the beginning and 273.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.01 ms. Allocated memory is still 319.8 MB. Free memory is still 273.1 MB. There was no memory consumed. Max. memory is 14.2 GB. * RCFGBuilder took 445.70 ms. Allocated memory is still 319.8 MB. Free memory was 270.6 MB in the beginning and 251.3 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. * TraceAbstraction took 789904.17 ms. Allocated memory was 319.8 MB in the beginning and 5.8 GB in the end (delta: 5.5 GB). Free memory was 251.3 MB in the beginning and 4.6 GB in the end (delta: -4.4 GB). Peak memory consumption was 5.2 GB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 362 VarBasedMoverChecksPositive, 3 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 3 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 3 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.7s, 61 PlacesBefore, 18 PlacesAfterwards, 58 TransitionsBefore, 12 TransitionsAfterwards, 592 CoEnabledTransitionPairs, 6 FixpointIterations, 21 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 3 ConcurrentYvCompositions, 3 ChoiceCompositions, 54 TotalNumberOfCompositions, 576 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 568 VarBasedMoverChecksPositive, 11 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 11 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 30 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 80 PlacesBefore, 31 PlacesAfterwards, 74 TransitionsBefore, 21 TransitionsAfterwards, 920 CoEnabledTransitionPairs, 5 FixpointIterations, 31 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 3 ConcurrentYvCompositions, 4 ChoiceCompositions, 66 TotalNumberOfCompositions, 1122 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 826 VarBasedMoverChecksPositive, 17 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 17 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 50 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.7s, 99 PlacesBefore, 41 PlacesAfterwards, 90 TransitionsBefore, 27 TransitionsAfterwards, 1308 CoEnabledTransitionPairs, 5 FixpointIterations, 39 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 3 ConcurrentYvCompositions, 5 ChoiceCompositions, 79 TotalNumberOfCompositions, 1841 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1012 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 20 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 52 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.1s, 118 PlacesBefore, 51 PlacesAfterwards, 106 TransitionsBefore, 33 TransitionsAfterwards, 1756 CoEnabledTransitionPairs, 6 FixpointIterations, 47 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 4 ConcurrentYvCompositions, 6 ChoiceCompositions, 92 TotalNumberOfCompositions, 2590 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1310 VarBasedMoverChecksPositive, 30 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 78 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.2s, 137 PlacesBefore, 61 PlacesAfterwards, 122 TransitionsBefore, 39 TransitionsAfterwards, 2264 CoEnabledTransitionPairs, 6 FixpointIterations, 61 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 3 ConcurrentYvCompositions, 7 ChoiceCompositions, 111 TotalNumberOfCompositions, 4038 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1797 VarBasedMoverChecksPositive, 34 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 34 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 125 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.5s, 156 PlacesBefore, 71 PlacesAfterwards, 138 TransitionsBefore, 45 TransitionsAfterwards, 2832 CoEnabledTransitionPairs, 5 FixpointIterations, 66 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 4 ConcurrentYvCompositions, 8 ChoiceCompositions, 121 TotalNumberOfCompositions, 4694 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 2227 VarBasedMoverChecksPositive, 40 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 40 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 203 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.6s, 175 PlacesBefore, 81 PlacesAfterwards, 154 TransitionsBefore, 51 TransitionsAfterwards, 3460 CoEnabledTransitionPairs, 6 FixpointIterations, 81 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 9 TrivialYvCompositions, 3 ConcurrentYvCompositions, 9 ChoiceCompositions, 141 TotalNumberOfCompositions, 6416 MoverChecksTotal - 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 7 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 789.5s, OverallIterations: 190, TraceHistogramMax: 7, AutomataDifference: 322.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 30.9s, HoareTripleCheckerStatistics: 11775 SDtfs, 59853 SDslu, 53174 SDs, 0 SdLazy, 101348 SolverSat, 6179 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 77.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7303 GetRequests, 1674 SyntacticMatches, 0 SemanticMatches, 5629 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70526 ImplicationChecksByTransitivity, 84.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61361occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 379.9s AutomataMinimizationTime, 184 MinimizatonAttempts, 10621235 StatesRemovedByMinimization, 175 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 24.0s InterpolantComputationTime, 6752 NumberOfCodeBlocks, 6640 NumberOfCodeBlocksAsserted, 371 NumberOfCheckSat, 6352 ConstructedInterpolants, 0 QuantifiedInterpolants, 992568 SizeOfPredicates, 584 NumberOfNonLiveVariables, 11752 ConjunctsInSsa, 878 ConjunctsInUnsatCore, 282 InterpolantComputations, 86 PerfectInterpolantSequences, 2836/5084 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